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* Remove aclk sync threads
* Disable functions if compiled with --disable-cloud
* Allocate and reuse buffer when scanning hosts
Tune transactions when writing metadata
Error checking when executing db_execute (it is already within a loop with retries)
* Schedule host context load in parallel
Child connection will be delayed if context load is not complete
Event loop cleanup
* Delay retention check if context is not loaded
Remove context load check from regular metadata host scan
* Improve checks to check finished threads
* Cleanup warnings when compiling with --disable-cloud
* Clean chart labels that were created before our current maximum retention
* Fix sql statement
* Remove structures members that of no use
Remove buffer allocations when not needed
* Fix compilation error
* Don't check for service running when not from a worker
* Code cleanup if agent is compiled with --disable-cloud
Setup ACLK tables in the database if needed
Submit node status update messages to the cloud
* Fix compilation warning when --disable-cloud is specified
* Address codacy issues
* Remove empty file -- has already been moved under contexts
* Use enum instead of numbers
* Use UUID_STR_LEN
* Add newline at the end of file
* Release node_id to prevent memory leak under certain cases
* Add queries in defines
* Ignore rc from transaction start -- if there is an active transaction, we will use it (same with commit) should further improve in a future PR
* Remove commented out code
* If host is null (it should not be) do not allocate config (coverity reports Resource leak)
* Do garbage collection when contexts is initialized
* Handle the case when config is not yet available for a host
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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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* 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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* 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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* 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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