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Diffstat (limited to 'database/README.md')
| -rw-r--r-- | database/README.md | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/database/README.md b/database/README.md index c5750e1147..b0a8e176ce 100644 --- a/database/README.md +++ b/database/README.md @@ -12,19 +12,10 @@ Netdata is fully capable of long-term metrics storage, at per-second granularity 2. `ram`, data are purely in memory. Data are never saved on disk. This mode uses `mmap()` and supports [KSM](#ksm). -3. `save`, data are only in RAM while Netdata runs and are saved to / loaded from disk on Netdata restart. It also - uses `mmap()` and supports [KSM](#ksm). - -4. `map`, data are in memory mapped files. This works like the swap. When Netdata writes data on its memory, the Linux - kernel marks the related memory pages as dirty and automatically starts updating them on disk. Unfortunately we - cannot control how frequently this works. The Linux kernel uses exactly the same algorithm it uses for its swap - memory. This mode uses `mmap()` but does not support [KSM](#ksm). _Keep in mind though, this option will have a - constant write on your disk._ - -5. `alloc`, like `ram` but it uses `calloc()` and does not support [KSM](#ksm). This mode is the fallback for all others +3. `alloc`, like `ram` but it uses `calloc()` and does not support [KSM](#ksm). This mode is the fallback for all others except `none`. -6. `none`, without a database (collected metrics can only be streamed to another Netdata). +4. `none`, without a database (collected metrics can only be streamed to another Netdata). ## Which database mode to use @@ -47,7 +38,7 @@ You can select the database mode by editing `netdata.conf` and setting: ```conf [db] - # dbengine (default), ram, save (the default if dbengine not available), map (swap like), none, alloc + # dbengine (default), ram (the default if dbengine not available), alloc, none mode = dbengine ``` |