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* support multiple hosts at pluginsd structures
* cleanup obsolete code
* use a lookup hashtable to quickly find the keyword to execute, without traversing the whole linked list of keywords
* more cleanup
* move new hash function to inlined.h
* minimize comparisons, eliminate a pre-parsing of the first keyword for each line
* cleanup parser from old code
* move parser into libnetdata
* unique entries in parser keywords hashtable
* move all hashing functions to inlined.h, name their sources, simple_hash() now defaults to FNV1a, it was FNV1
* small_hash() for parser
* plugins.d now can switch hosts, and also create/update them
* update hash function and hashtable size
* updated message
* unittest all hashing functions
* reset the chart when setting a new host
* remove host tags
* enable archived hosts when a collector pushes host info
* do not need localhost to swtich to localhost
* disable ARAL and OWA with -DFSANITIZE_ADDRESS=1
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Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>
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* parallel initialization of tiers
* do not spawn multiple dbengine event loops
* user configurable dbengine parallel initialization
* size netdata based on the real cpu cores available on the system netdata runs, not on the system monitored
* user configurable system cpus
* move cpuset parsing to os.c/.h
* fix replication of misaligned chart dimensions
* give a different path to each tier thread
* statically allocate the path into the initialization structure
* use aral for reusing dbengine pages
* dictionaries uses ARAL for fixed sized values
* fix compilation without internal checks
* journal v2 index uses aral
* test to see judy allocations
* judy allocations using aral
* Add config option to select if dbengine will use direct I/O (default is yes)
* V1 journafiles will use uv_fs_read instead of mmap (respect the direct I/O setting)
* Remove sqlite3IsMemdb as it is unused
* Fix compilation error when --disable-dbengine is used
* use aral for dbengine work_cmds
* changed aral API to support new features
* pgc and mrg aral overheads
* rrdeng opcodes using aral
* better structuring and naming
* dbegnine query handles using aral
* page descriptors using aral
* remove obsolete linking
* extent io descriptors using aral
* aral keeps one last page alive
* add missing return value
* added judy aral overhead
* pdc now uses aral
* page_details now use aral
* epdl and deol using aral - make sure ARALs are initialized before spawning the event loop
* remove unused linking
* pgc now uses one aral per partition
* aral measure maximum allocation queue
* aral to allocate pages in parallel
* aral parallel pages allocation when needed
* aral cleanup
* track page allocation and page population separately
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Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* acquiring / releasing interface for metrics
* metrics registry statistics
* cleanup metrics registry by deleting metrics when they dont have retention anymore; do not double copy the data of pages to be flushed
* print the tier in retention summary
* Open files with buffered instead of direct I/O (test)
* added more metrics stats and fixed unittest
* rename writer functions to avoid confusion with refcounting
* do not release a metric that is not acquired
* Revert to use direct I/O on write -- use direct I/O on read as well
* keep track of ARAL overhead and add it to the memory chart
* aral full check via api
* Cleanup
* give names to ARALs and PGCs
* aral improvements
* restore query expansion to the future
* prefer higher resolution tier when switching plans
* added extent read statistics
* smoother joining of tiers at query engine
* fine tune aral max allocation size
* aral restructuring to hide its internals from the rest of netdata
* aral restructuring; addtion of defrag option to aral to keep the linked list sorted - enabled by default to test it
* fully async aral
* some statistics and cleanup
* fix infinite loop while calculating retention
* aral docs and defragmenting disabled by default
* fix bug and add optimization when defragmenter is not enabled
* aral stress test
* aral speed report and documentation
* added internal checks that all pages are full
* improve internal log about metrics deletion
* metrics registry uses one aral per partition
* metrics registry aral max size to 512 elements per page
* remove data_structures/README.md dependency
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Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* replication cancels pending queries on exit
* log when waiting for inflight queries
* when there are collected and not-collected metrics, use the context priority from the collected only
* Write metadata with a faster pace
* Remove journal file size limit and sync mode to 0 / Drop wal checkpoint for now
* Wrap in a big transaction remaining metadata writes (test 1)
* fix higher tiers when tiering iterations = 2
* dbengine always returns db-aligned points; query engine expands the queries by 2 points in every direction to have enough data for interpolation
* Wrap in a big transaction metadata writes (test 2)
* replication cancelling fix
* do not first and last entry in replication when the db has no retention
* fix internal check condition
* Increase metadata write batch size
* always apply error limit to dbengine logs
* Remove code that processes the obsolete health.db files
* cleanup in query.c
* do not allow queries to go beyond db boundaries
* prevent internal log for +1 delta in timestamp
* detect gap pages in conflicts
* double protection for gap injection in main cache
* Add checkpoint to prevent large WAL while running
Remove unused and duplicate functions
* do not allocate chart cache dir if not needed
* add more info to unittests
* revert query expansion to satisfy unittests
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* on shutdown stop data collection for all hosts instead of freeing their memory
* print number of sql statements per metadata host scan
* print timings with metadata checking
* use dbengine API to figure out of a database is legacy
* Recalculate retention after a datafile deletion
* validate child timestamps during replication
* main cache uses a lockless aral per partition, protected by the partition index lock
* prevent ML crash
* Revert "main cache uses a lockless aral per partition, protected by the partition index lock"
This reverts commit 6afc01527dc5c66548b4bc8a1d63c026c3149358.
* Log direct index and binary searches
* distribute metrics more evenly across time
* statistics about retention recalculation
* fix crash
* Reverse the binary search to calculate retention
* more optimization on retention calculation
* removed commented old code
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* Moving the cloud docs under /docs/cloud (previous location: netdata/learn/*)
* Added metadata on almost every document of the old learn site for the new ingest process of learn.
* Map old learn document to their best fit as topic related docs.
Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>
Co-authored-by: DShreve2 <david@netdata.cloud>
Co-authored-by: hugovalente-pm <hugo@netdata.cloud>
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* cache 100 pages for each size our tiers need
* smarter page caching
* account the caching structures
* dynamic max number of cached pages
* make variables const to ensure they are not changed
* make sure replication timestamps do not go to the future
* replication now sends chart and dimension states atomically; replication receivers ignores chart and dimension states when rbegin is also ignored
* make sure all pages are flushed on shutdown
* take into account empty points too
* when recalculating retention update first_time_s on metrics only when they are bigger
* Report the datafile number we use to recalculate retention
* Report the datafile number we use to recalculate retention
* rotate db at startup
* make query plans overlap
* Calculate properly first time s
* updated event labels
* negative page caching fix
* Atempt to create missing tables on query failure
* Atempt to create missing tables on query failure (part 2)
* negative page caching for all gaps, to eliminate jv2 scans
* Fix unittest
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* run cleanup in workers
* when there is a discrepancy between update every, fix it
* fix the other occurences of metric update every mismatch
* allow resetting the same timestamp
* validate flushed pages before committing them to disk
* initialize collection with the latest time in mrg
* these should be static functions
* acquire metrics for writing to detect multiple data collections of the same metric
* print the uuid of the metric that is collected twice
* log the discrepancies of completed pages
* 1 second tolerance
* unify validation of pages and related logging across dbengine
* make do_flush_pages() thread safe
* flush pages runs on libuv workers
* added uv events to tp workers
* dont cross datafile spinlock and rwlock
* should be unlock
* prevent the creation of multiple datafiles
* break an infinite replication loop
* do not log the epxansion of the replication window due to start streaming
* log all invalid pages with internal checks
* do not shutdown event loop threads
* add information about collected page events, to find the root cause of invalid collected pages
* rewrite of the gap filling to fix the invalid collected pages problem
* handle multiple collections of the same metric gracefully
* added log about main cache page conflicts; fix gap filling once again...
* keep track of the first metric writer
* it should be an internal fatal - it does not harm users
* do not check of future timestamps on collected pages, since we inherit the clock of the children; do not check collected pages validity without internal checks
* prevent negative replication completion percentage
* internal error for the discrepancy of mrg
* better logging of dbengine new metrics collection
* without internal checks it is unused
* prevent pluginsd crash on exit due to calling pthread_cancel() on an exited thread
* renames and atomics everywhere
* if a datafile cannot be acquired for deletion during shutdown, continue - this can happen when there are hot pages in open cache referencing it
* Debug for context load
* rrdcontext uuid debug
* rrddim uuid debug
* rrdeng uuid debug
* Revert "rrdeng uuid debug"
This reverts commit 393da190826a582e7e6cc90771bf91b175826d8b.
* Revert "rrddim uuid debug"
This reverts commit 72150b30408294f141b19afcfb35abd7c34777d8.
* Revert "rrdcontext uuid debug"
This reverts commit 2c3b940dc23f460226e9b2a6861c214e840044d0.
* Revert "Debug for context load"
This reverts commit 0d880fc1589f128524e0b47abd9ff0714283ce3b.
* do not use legacy uuids on multihost dbs
* thread safety for journafile size
* handle other cases of inconsistent collected pages
* make health thread check if it should be running in key loops
* do not log uuids
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* query preparation runs before extent reads
* populate mrg in parallel
* fix formatting warning
* first search for a metric then add it if it does not exist
* Revert "first search for a metric then add it if it does not exist"
This reverts commit 4afa6461fcce859d03f1c9cf56dd3b5933ee5ebc.
* Revert "fix formatting warning"
This reverts commit 49473493f7f1c3399b5635a573d3c6ed2b6e46f3.
* Revert "populate mrg in parallel"
This reverts commit a40166708d4222f6329904f109114c47c44ca666.
* merge journalfiles metrics before committing them to MRG
* Revert "merge journalfiles metrics before committing them to MRG"
This reverts commit 50c8934e23a0a09ea4da80e3f88290e46496ad92.
* Revert "Revert "populate mrg in parallel""
This reverts commit f4c149d2ab7a8c9af24a10f95438a0d662a5cf8a.
* Revert "Revert "fix formatting warning""
This reverts commit 78298ff9efc49806ded029f5f1e868cc42e8f6eb.
* Revert "Revert "first search for a metric then add it if it does not exist""
This reverts commit 997b9c813b290882ba18a8c44bf73f9ee5480adf.
* preload first and last journal files v2
* fix formatting warning
* parallel loading of tiers; cleanup of ctx structures
* use half the cores
* add partitions to metrics registry
* revert accidental change
* parallel processing according to MRG partitions; dont recalculate retention on exit
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* Bump the soft limit on open FDs to the max.
On systems with a low soft-limit for open file descriptors, the agent
would fail to initialize all dbengine tiers.
* Iterate the right number of dbengine tiers.
For whatever reason, this was causing a crash on MacOS but it was
running "correctly" on Linux systems.
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* track memory footprint of Netdata
* track db modes alloc/ram/save/map
* track system info; track sender and receiver
* fixes
* more fixes
* track workers memory, onewayalloc memory; unify judyhs size estimation
* track replication structures and buffers
* Properly clear host RRDHOST_FLAG_METADATA_UPDATE flag
* flush the replication buffer every 1000 times the circular buffer is found empty
* dont take timestamp too frequently in sender loop
* sender buffers are not used by the same thread as the sender, so they were never recreated - fixed it
* free sender thread buffer on replication threads when replication is idle
* use the last sender flag as a timestamp of the last buffer recreation
* free cbuffer before reconnecting
* recreate cbuffer on every flush
* timings for journal v2 loading
* inlining of metric and cache functions
* aral likely/unlikely
* free left-over thread buffers
* fix NULL pointer dereference in replication
* free sender thread buffer on sender thread too
* mark ctx as used before flushing
* better logging on ctx datafiles closing
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* Add for_each_open_fd() and fix second instance of _SC_OPEN_MAX
* Add argument to allow exclusion of file descriptors from closing
* Fix clang error
* Address review comments
* Use close_range() if possible and replace macros with enums
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* cleanup journal v2 mounts periodically
* fix for last commit
* re-enable loading page from disk when the arrangement of pages requires it
* Remove unused statistics
* Estimate diskspace when the current datafile is full and queue a rotate command (Currently it will not attempt to estimate end size for journals)
Queue a command to check quota on startup per tier
* apps.plugin now exposes RSS chart
* shorter thread names to make debugging easier, since thread names can only be 15 characters
* more thread names fixes
* allow an apps_groups.conf target to be pid 0 or 1
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* revert health to single thread
* remove getting now
* use a health struct
* remove commented code
* cleanup health log from metdata
* dont check for METADATA_UPDATE
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* reduce journal v2 shared memory using madvise() - not integrated yet
* working attempt to minimize dbengine shared memory
* never call willneed - let the kernel decide which parts of each file are really needed
* journal files get MADV_RANDOM
* dont call MADV_DONTNEED too frequently
* madvise() is always called with the journal unlocked but referenced
* call madvise() even less frequently
* added chart for monitoring database events
* turn batch mode on under critical conditions
* max size to evict is 1/4 of the max
* fix max size to evict calculation
* use dbengine_page/extent_alloc/free to pages and extents allocations, tracking also the size of these allocations at free time
* fix calculation for batch evictions
* allow main and open cache to have as many evictors as needed
* control inline evictors for each cache; report different levels of cache pressure on every cache evaluation
* more inline evictors for extent cache
* bypass max inline evictors above critical level
* current cache usage has to be taken
* re-arrange items in journafile
* updated docs - work in progress
* more docs work
* more docs work
* Map / unmap journal file
* draw.io diagram for dbengine operations
* updated dbengine diagram
* updated docs
* journal files v2 now get mapped and unmapped as needed
* unmap journal v2 immediately when getting retention
* mmap and munmap do not block queries evaluating journal files v2
* have only one unmap function
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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systemd service (#14255)
Fixes https://github.com/netdata/netdata/issues/14238
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* query planer weight calculation using long long
* adjust replication query ahead pipeline for smaller systems
* do not generate huge replication messages
* add message to indicate replication message was interrupted
* improved message
* max replication size 25% of sender buffer
* fix for last commit
* use less cache and smaller page sizes and fewer threads on 32-bits
* fix reserved libuv workers for 32bits
* fix detection of 32/64 bit
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* allow extents to be merged for as long as possible
* do not block the event loop while recalculating retention due to datafile rotation
* buffers are incrementally cleaned up, every second, by just 1 entry
* fix order of commands
* remove newline
* measure cancelled extent read requests
* count all cancelled extent requests
* do not double count failed pages
* fixed cancelled name
* Fix error and warnings when compiling with --disable-dbengine
* when the timeframe is outside retention and whole query should fail
* do not mark as failed pages that have been loaded but have been skipped
* added chart to show cache memory calculation variables
* LONG_MAX for 32-bit compatibility
* fix cache size calculation on 32-bit
* fix cache size calculation on 32-bit - use unsinged long long
* fix compilation warnings on 32-bits
* fix another compilation warning on 32-bits
* fix compilation warnings on older 32-bit compilers
* fix compilation warnings on older 32-bit compilers - more of them
* disable ML threads joining
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
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* allow running multiple evictors and flushers
* flipped aggressive and critical evictions
* dont run more than 1 evictor
* switch to batch evictions when the size of the cache is critical
* remove batching of evictions
* dedup extent load pending requests
* accounting for merged extents
* always use double linked list
* add extent merging to the overall cache hit ratio
* support requeuing merged extents to higher priorities
* fix function name
* query planner now prefers higher tiers even when they miss some data at the end, which it fills from lower tiers; adding the option "plan" to jsonwrap now renders the query plan
* update statistics after every dimension completes
* use the retention of all tiers to calculate coverage per tier
* use the original window of the query for the planner
* give 2.5% befenit for each higher tier
* update cmd->priority so that it be requeued multiple times
* merged extent pages is a cache hit
* fixed dbegnine cache hit stats
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* profile startup and shutdown timings
* waste less time waiting for threads to exit
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* allow spinlock to be compiled with gcc 4.9
* allow compiling without dbengine
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* count open cache pages refering to datafile
* eliminate waste flush attempts
* remove eliminated variable
* journal v2 scanning split functions
* avoid locking open cache for a long time while migrating to journal v2
* dont acquire datafile for the loop; disable thread cancelability while a query is running
* work on datafile acquiring
* work on datafile deletion
* work on datafile deletion again
* logs of dbengine should start with DBENGINE
* thread specific key for queries to check if a query finishes without a finalize
* page_uuid is not used anymore
* Cleanup judy traversal when building new v2
Remove not needed calls to metric registry
* metric is 8 bytes smaller; timestamps are protected with a spinlock; timestamps in metric are now always coherent
* disable checks for invalid time-ranges
* Remove type from page details
* report scanning time
* remove infinite loop from datafile acquire for deletion
* remove infinite loop from datafile acquire for deletion again
* trace query handles
* properly allocate array of dimensions in replication
* metrics cleanup
* metrics registry uses arrayalloc
* arrayalloc free should be protected by lock
* use array alloc in page cache
* journal v2 scanning fix
* datafile reference leaking hunding
* do not load metrics of future timestamps
* initialize reasons
* fix datafile reference leak
* do not load pages that are entirely overlapped by others
* expand metric retention atomically
* split replication logic in initialization and execution
* replication prepare ahead queries
* replication prepare ahead queries fixed
* fix replication workers accounting
* add router active queries chart
* restore accounting of pages metadata sources; cleanup replication
* dont count skipped pages as unroutable
* notes on services shutdown
* do not migrate to journal v2 too early, while it has pending dirty pages in the main cache for the specific journal file
* do not add pages we dont need to pdc
* time in range re-work to provide info about past and future matches
* finner control on the pages selected for processing; accounting of page related issues
* fix invalid reference to handle->page
* eliminate data collection handle of pg_lookup_next
* accounting for queries with gaps
* query preprocessing the same way the processing is done; cache now supports all operations on Judy
* dynamic libuv workers based on number of processors; minimum libuv workers 8; replication query init ahead uses libuv workers - reserved ones (3)
* get into pdc all matching pages from main cache and open cache; do not do v2 scan if main cache and open cache can satisfy the query
* finner gaps calculation; accounting of overlapping pages in queries
* fix gaps accounting
* move datafile deletion to worker thread
* tune libuv workers and thread stack size
* stop netdata threads gradually
* run indexing together with cache flush/evict
* more work on clean shutdown
* limit the number of pages to evict per run
* do not lock the clean queue for accesses if it is not possible at that time - the page will be moved to the back of the list during eviction
* economies on flags for smaller page footprint; cleanup and renames
* eviction moves referenced pages to the end of the queue
* use murmur hash for indexing partition
* murmur should be static
* use more indexing partitions
* revert number of partitions to number of cpus
* cancel threads first, then stop services
* revert default thread stack size
* dont execute replication requests of disconnected senders
* wait more time for services that are exiting gradually
* fixed last commit
* finer control on page selection algorithm
* default stacksize of 1MB
* fix formatting
* fix worker utilization going crazy when the number is rotating
* avoid buffer full due to replication preprocessing of requests
* support query priorities
* add count of spins in spinlock when compiled with netdata internal checks
* remove prioritization from dbengine queries; cache now uses mutexes for the queues
* hot pages are now in sections judy arrays, like dirty
* align replication queries to optimal page size
* during flushing add to clean and evict in batches
* Revert "during flushing add to clean and evict in batches"
This reverts commit 8fb2b69d068499eacea6de8291c336e5e9f197c7.
* dont lock clean while evicting pages during flushing
* Revert "dont lock clean while evicting pages during flushing"
This reverts commit d6c82b5f40aeba86fc7aead062fab1b819ba58b3.
* Revert "Revert "during flushing add to clean and evict in batches""
This reverts commit ca7a187537fb8f743992700427e13042561211ec.
* dont cross locks during flushing, for the fastest flushes possible
* low-priority queries load pages synchronously
* Revert "low-priority queries load pages synchronously"
This reverts commit 1ef2662ddcd20fe5842b856c716df134c42d1dc7.
* cache uses spinlock again
* during flushing, dont lock the clean queue at all; each item is added atomically
* do smaller eviction runs
* evict one page at a time to minimize lock contention on the clean queue
* fix eviction statistics
* fix last commit
* plain should be main cache
* event loop cleanup; evictions and flushes can now happen concurrently
* run flush and evictions from tier0 only
* remove not needed variables
* flushing open cache is not needed; flushing protection is irrelevant since flushing is global for all tiers; added protection to datafiles so that only one flusher can run per datafile at any given time
* added worker jobs in timer to find the slow part of it
* support fast eviction of pages when all_of_them is set
* revert default thread stack size
* bypass event loop for dispatching read extent commands to workers - send them directly
* Revert "bypass event loop for dispatching read extent commands to workers - send them directly"
This reverts commit 2c08bc5bab12881ae33bc73ce5dea03dfc4e1fce.
* cache work requests
* minimize memory operations during flushing; caching of extent_io_descriptors and page_descriptors
* publish flushed pages to open cache in the thread pool
* prevent eventloop requests from getting stacked in the event loop
* single threaded dbengine controller; support priorities for all queries; major cleanup and restructuring of rrdengine.c
* more rrdengine.c cleanup
* enable db rotation
* do not log when there is a filter
* do not run multiple migration to journal v2
* load all extents async
* fix wrong paste
* report opcodes waiting, works dispatched, works executing
* cleanup event loop memory every 10 minutes
* dont dispatch more work requests than the number of threads available
* use the dispatched counter instead of the executing counter to check if the worker thread pool is full
* remove UV_RUN_NOWAIT
* replication to fill the queues
* caching of extent buffers; code cleanup
* caching of pdc and pd; rework on journal v2 indexing, datafile creation, database rotation
* single transaction wal
* synchronous flushing
* first cancel the threads, then signal them to exit
* caching of rrdeng query handles; added priority to query target; health is now low prio
* add priority to the missing points; do not allow critical priority in queries
* offload query preparation and routing to libuv thread pool
* updated timing charts for the offloaded query preparation
* caching of WALs
* accounting for struct caches (buffers); do not load extents with invalid sizes
* protection against memory booming during replication due to the optimal alignment of pages; sender thread buffer is now also reset when the circular buffer is reset
* also check if the expanded before is not the chart later updated time
* also check if the expanded before is not after the wall clock time of when the query started
* Remove unused variable
* replication to queue less queries; cleanup of internal fatals
* Mark dimension to be updated async
* caching of extent_page_details_list (epdl) and datafile_extent_offset_list (deol)
* disable pgc stress test, under an ifdef
* disable mrg stress test under an ifdef
* Mark chart and host labels, host info for async check and store in the database
* dictionary items use arrayalloc
* cache section pages structure is allocated with arrayalloc
* Add function to wakeup the aclk query threads and check for exit
Register function to be called during shutdown after signaling the service to exit
* parallel preparation of all dimensions of queries
* be more sensitive to enable streaming after replication
* atomically finish chart replication
* fix last commit
* fix last commit again
* fix last commit again again
* fix last commit again again again
* unify the normalization of retention calculation for collected charts; do not enable streaming if more than 60 points are to be transferred; eliminate an allocation during replication
* do not cancel start streaming; use high priority queries when we have locked chart data collection
* prevent starvation on opcodes execution, by allowing 2% of the requests to be re-ordered
* opcode now uses 2 spinlocks one for the caching of allocations and one for the waiting queue
* Remove check locks and NETDATA_VERIFY_LOCKS as it is not needed anymore
* Fix bad memory allocation / cleanup
* Cleanup ACLK sync initialization (part 1)
* Don't update metric registry during shutdown (part 1)
* Prevent crash when dashboard is refreshed and host goes away
* Mark ctx that is shutting down.
Test not adding flushed pages to open cache as hot if we are shutting down
* make ML work
* Fix compile without NETDATA_INTERNAL_CHECKS
* shutdown each ctx independently
* fix completion of quiesce
* do not update shared ML charts
* Create ML charts on child hosts.
When a parent runs a ML for a child, the relevant-ML charts
should be created on the child host. These charts should use
the parent's hostname to differentiate multiple parents that might
run ML for a child.
The only exception to this rule is the training/prediction resource
usage charts. These are created on the localhost of the parent host,
because they provide information specific to said host.
* check new ml code
* first save the database, then free all memory
* dbengine prep exit before freeing all memory; fixed deadlock in cache hot to dirty; added missing check to query engine about metrics without any data in the db
* Cleanup metadata thread (part 2)
* increase refcount before dispatching prep command
* Do not try to stop anomaly detection threads twice.
A separate function call has been added to stop anomaly detection threads.
This commit removes the left over function calls that were made
internally when a host was being created/destroyed.
* Remove allocations when smoothing samples buffer
The number of dims per sample is always 1, ie. we are training and
predicting only individual dimensions.
* set the orphan flag when loading archived hosts
* track worker dispatch callbacks and threadpool worker init
* make ML threads joinable; mark ctx having flushing in progress as early as possible
* fix allocation counter
* Cleanup metadata thread (part 3)
* Cleanup metadata thread (part 4)
* Skip metadata host scan when running unittest
* unittest support during init
* dont use all the libuv threads for queries
* break an infinite loop when sleep_usec() is interrupted
* ml prediction is a collector for several charts
* sleep_usec() now makes sure it will never loop if it passes the time expected; sleep_usec() now uses nanosleep() because clock_nanosleep() misses signals on netdata exit
* worker_unregister() in netdata threads cleanup
* moved pdc/epdl/deol/extent_buffer related code to pdc.c and pdc.h
* fixed ML issues
* removed engine2 directory
* added dbengine2 files in CMakeLists.txt
* move query plan data to query target, so that they can be exposed by in jsonwrap
* uniform definition of query plan according to the other query target members
* event_loop should be in daemon, not libnetdata
* metric_retention_by_uuid() is now part of the storage engine abstraction
* unify time_t variables to have the suffix _s (meaning: seconds)
* old dbengine statistics become "dbengine io"
* do not enable ML resource usage charts by default
* unify ml chart families, plugins and modules
* cleanup query plans from query target
* cleanup all extent buffers
* added debug info for rrddim slot to time
* rrddim now does proper gap management
* full rewrite of the mem modes
* use library functions for madvise
* use CHECKSUM_SZ for the checksum size
* fix coverity warning about the impossible case of returning a page that is entirely in the past of the query
* fix dbengine shutdown
* keep the old datafile lock until a new datafile has been created, to avoid creating multiple datafiles concurrently
* fine tune cache evictions
* dont initialize health if the health service is not running - prevent crash on shutdown while children get connected
* rename AS threads to ACLK[hostname]
* prevent re-use of uninitialized memory in queries
* use JulyL instead of JudyL for PDC operations - to test it first
* add also JulyL files
* fix July memory accounting
* disable July for PDC (use Judy)
* use the function to remove datafiles from linked list
* fix july and event_loop
* add july to libnetdata subdirs
* rename time_t variables that end in _t to end in _s
* replicate when there is a gap at the beginning of the replication period
* reset postponing of sender connections when a receiver is connected
* Adjust update every properly
* fix replication infinite loop due to last change
* packed enums in rrd.h and cleanup of obsolete rrd structure members
* prevent deadlock in replication: replication_recalculate_buffer_used_ratio_unsafe() deadlocking with replication_sender_delete_pending_requests()
* void unused variable
* void unused variables
* fix indentation
* entries_by_time calculation in VD was wrong; restored internal checks for checking future timestamps
* macros to caclulate page entries by time and size
* prevent statsd cleanup crash on exit
* cleanup health thread related variables
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
Co-authored-by: vkalintiris <vasilis@netdata.cloud>
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dont call worker_utilization_finish() twice
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* Add profile.plugin
Creates the specified number of charts/dimensions, and supports
backfilling with pseudo-historical data.
* Bump
* Remove wrongly merged line.
* Use the number of models specified from the config section.
* Add option to consult all ML models.
* Remove profiling option consuming all models.
* Add underscore after chart name prefix.
* prediction -> dimensions chart
* reorder funcs
* Split charts across types with correct priority
* Ignore training request when chart is under replication.
* Track global number of models consulted.
* Cleanup config.
* initial readme updates
* fix readme
* readme
* Fix function definition when ML is disabled.
* Add dummy ml_chart_update_{begin,end}
* Remove profile_plugin
* Define chart priorities under collectors/all.h
* s/curr_t/current_time/
* Use libnetdata's lock/thread wrappers.
* Fix autotools & cmake builds.
* Delete ML dimensions & charts.
* Let users of buffer preprocessing to handle memory.
* Add separate API calls to start/stop ML threads.
Co-authored-by: Andrew Maguire <andrewm4894@gmail.com>
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(#14172)
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* Add profile.plugin
Creates the specified number of charts/dimensions, and supports
backfilling with pseudo-historical data.
* Bump
* Remove wrongly merged line.
* Use the number of models specified from the config section.
* Add option to consult all ML models.
* Remove profiling option consuming all models.
* Add underscore after chart name prefix.
* prediction -> dimensions chart
* reorder funcs
* Split charts across types with correct priority
* Ignore training request when chart is under replication.
* Track global number of models consulted.
* Cleanup config.
* initial readme updates
* fix readme
* readme
* Fix function definition when ML is disabled.
* Add dummy ml_chart_update_{begin,end}
* Remove profile_plugin
* Define chart priorities under collectors/all.h
* s/curr_t/current_time/
Co-authored-by: Andrew Maguire <andrewm4894@gmail.com>
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* use a simple pattern to choose what alerts to load
* rename config to alarms
* add config entry doc
* fix link
* change wording
* change wording 2
* add to analytics
* build a list of disabled alarms for analytics
* add silenced alarms
* remove analytics related
* remove analytics related 2
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add version to netdatacli
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* Wait for pending read to complete before destroying the page
* fix page alignment crash
* Compare copy of descriptor
* prevent workers crashes by disabling cancellability on critical areas and separate sqlite3 statistics to its own worker job
* do not update sqlite3 stats when they are slow
* do not query sqlite3 statistics when they are slow
* flipped condition
* sqlite3 proper timeout calculation
Co-authored-by: Costa Tsaousis <costa@netdata.cloud>
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* replication fixes 9
* no room metric is now absolute
* decrement senders full and flip the actions on sender full and sender available
* finer timings
* execute all requests, unconditionally, once they are in the replication queue; worker charts are now sorted
* remove left-over debug message
* log verification of replication completion only when there are no pending requests any more
* use up to 50% of the sender buffer for replication responses
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* find the issue with workers performance and optimize it
* have 2 independent locks in workers
* break down workers statistics work to measure the time of each module
* optimize reading cpu for workers; cleanup procfile from unecessary allocations and operations
* cleanup workers
* fix the workers statistics dimension name
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* Sanitize bash arguments.
Remove leading dashes and escape single quotes in command arguments.
* Quote expanded variable in test
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* replication requests with start_streaming=true are executed immediately upon reception, instead of being placed in the queue
* disable thread cancelability while workers cleanup
* remove obsolete worker from replication
* multi-threaded replication with netdata.conf option to set number of replication threads
* revert spinlock to mutex
* separate worker and main thread worker jobs
* restart the queue every 10 seconds only
* use atomic for sender buffer percentage
* reset the queue position after sleeping
* use sender resets to sleep properly
* fix condition
* cleanup sender members related to replication
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* move global statistics workers to a separate thread; query statistics per query source; query statistics for ML, exporters, backfilling; reset replication point in time every 10 seconds, instead of every 1; fix compilation warnings; optimize the replication queries code; prevent long tail of replication requests (big sleeps); provide query statistics about replication ; optimize replication sender when most senders are full; optimize replication_request_get_first_available(); reset replication completion calculation;
* remove workers utilization from global statistics thread
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* pluginsd cleanup; replication logic cleanup; fix bug in replication begin
* log replication start/stop and change the keyword of NETDATA_LOG_REPLICATION_REQUESTS logs to REPLAY
* dont ask for data the child does not have; log fixes
* more pluginsd cleanup
* count sender dictionary entries
* fix dictionary_flush()
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* cleanup and additional information about replication
* fix deadlock on sender mutex
* do not ignore start streaming empty requests; when there duplicate requests, merge them
* flipped the flag
* final touch
* added queued flag on the charts to prevent them from being obsoleted by the service thread
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* Remove calls to rrdset_next().
* Rm checks plugin
* Update documentantion
* Call rrdset_next from within rrdset_done
This wraps up the removal of rrdset_next from internal collectors, which
removes a lot of unecessary code and the need for if/else clauses in
every place.
The pluginsd parser is the only component that calls rrdset_next*()
functions because it's not strictly speaking a collector but more of a
collector manager/proxy.
With the current changes it's possible to simplify the API we expose
from RRD significantly, but this will be follow-up work in the future.
* Remove stale reference to checks.plugin
* Fix RRD unit test
rrdset_next is not meant to be called from these tests.
* Fix db engine unit test.
* Schedule rrdset_next when we have completed at least one collection.
* Mark chart creation clauses as unlikely.
* Add missing brace to fix FreeBSD plugin.
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* streaming compression, query planner and replication fixes
* remove journal v2 stats from global statistics
* disable sql for checking past sql UUIDs
* single threaded replication
* final replication thread using dictionaries and JudyL for sorting the pending requests
* do not timeout the sending socket when there are pending replication requests
* streaming receiver using read() instead of fread()
* remove FILE * from streaming - now using posix read() and write()
* increase timeouts to 10 minutes
* apply sender timeout only when there are metrics that are supposed to be streamed
* error handling in replication
* remove retries on socket read timeout; better error messages
* take into account inbound traffic too to detect that a connection is stale
* remove race conditions from replication thread
* make sure deleted entries are marked as executed, so that even if deletion fails, they will not be executed
* 2 minutes timeout to retry streaming to a parent that already has this node
* remove unecessary condition check
* fix compilation warnings
* include judy in replication
* wrappers to handle retries for SSL_read and SSL_write
* compressed bytes read monitoring
* recursive locks on replication to make it faster during flush or cleanup
* replication completion chart at the receiver side
* simplified recursive mutex
* simplified recursive mutex again
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