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32 Commits

Author SHA1 Message Date
shribe
9e6d2461c3 improved PostgreSQL advice 
The advice to not cache data in ARC is simply wrong--PG does not work that way, shared buffers are more special purpose. PG *expects* the majority of caching to be done by the OS file cache and is designed around that assumption.

LZ4 compression changes things with regard to record size--even with fast NVMe--using a record size that will fit multiple compressed blocks increases performance by reducing the total data written despite the partial record writes. (I have benchmarked this extensively.)
 2022-12-19 21:42:51 +03:00
George Melikov
1a4718c9c1 Update Workload Tuning.rst 
Add info about init_on_alloc
 2022-10-31 13:22:00 +03:00
George Melikov
35f18ee573 Workload tuning: prepare for FS_CASEFOLD_FL patch 2022-10-02 00:20:49 +03:00
gyto6
46773e0cd4 Update Hardware.rst - removed comments and obsolete warning paragraph (#323) 2022-06-27 01:38:50 +03:00
gyto6
38982070ca Add NVMe et SATA drives with PLP + Optane Drives 
Update Hardware.rst
 2022-06-26 16:15:28 +03:00
Laura Hild
5e947852c7 Update zfs_multihost_{fail,import}_intervals defaults for v0.8 
Pull request was openzfs/zfs#8495,
commit openzfs/zfs@db2af93d72.
 2022-05-19 17:56:36 +03:00
George Melikov
a3bd990124 Module Parameters: update zfs_arc_max for FreeBSD 
Closes: #276
 2022-03-27 15:15:28 +03:00
George Melikov
c53d8efe03 Module Parameters: cleanup titles underlines 2022-03-19 13:18:41 +03:00
kewiha
1cbb76f064 Add details on l2arc_exclude_special (#275) 2022-03-05 21:13:01 +03:00
jumbi77
6ab5670546 zfs doc: upper bound for slop space calculation 
OpenZFS v2.1 and above added an upper bound for slop space calculation.
See: f01eaed455
 2022-01-14 21:57:06 +03:00
David Pesticcio
3072a80310 Update: SATA drives with power failure protection (#199) 
Old location: http://blog.nordeus.com/dev-ops/power-failure-testing-with-ssds.htm (404 Not Found)

Present location: https://engineering.nordeus.com/power-failure-testing-with-ssds
 2021-09-14 10:59:31 +03:00
Václav Skála
f5a2a4e05b Fix zfs_scan_mem_lim_soft_fact documentation 
Signed-off-by: Václav Skála <skala@vshosting.cz>
 2021-07-13 12:36:55 +03:00
William Reiske
cd6805a58d Update ZIO Scheduler.rst 2021-06-17 15:42:38 -05:00
George Melikov
3d3c901018 Workload Tuning.rst: fix redundant_metadata value 2021-04-25 18:46:23 +03:00
Peter Ashford
9dbf189300 Update Hardware.rst 
Correct minor issue
 2021-03-16 11:07:05 +03:00
Brian Behlendorf
f7ee059f28 Update OpenZFS module parameters (#76) 
- Renamed the page to "Module Parameter" since it now applies
  equally to Linux and FreeBSD.

- Updated spl_kmem_cache_expire, spl_kmem_cache_obj_per_slab_min,
  spl_kmem_cache_kmem_limit to note the last version they were
  included in.

- Added new l2arc_mfuonly, l2arc_rebuild_blocks_min_l2size,
  l2arc_rebuild_enabled, and l2arc_trim_ahead options which
  were added in OpenZFS 2.0 for the persistent L2ARC feature.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
 2020-11-25 09:42:02 -08:00
Paul Steinbach
402b01656d Corrected typo in "power off" (#75) 2020-11-17 23:49:49 +03:00
George Melikov
c219fe808a Module Parameters: link zfs-module-parameters(5) (#60) 
+ clean up text about wiki reference.

Signed-off-by: George Melikov <mail@gmelikov.ru>
 2020-10-02 22:10:21 +03:00
George Melikov
f87cd848cf Linux: no more disk scheduler overriding 2020-09-21 19:28:09 +03:00
George Melikov
cf1d0e731f Hardware: trim support added into OpenZFS 2020-09-21 19:28:09 +03:00
George Melikov
f9e79f17b4 Hardware: Open ZFS -> OpenZFS 2020-09-21 19:28:09 +03:00
George Melikov
44322e6523 Workload tuning: add ToC 2020-09-21 19:28:09 +03:00
George Melikov
a28c83889f Hardware: add ToC 2020-09-21 19:28:09 +03:00
George Melikov
1fd65e2515 Workload tuning: rework for sphinx 2020-09-21 19:28:09 +03:00
George Melikov
2255c092be Performance_tuning raw convertion to rst 2020-09-21 19:28:09 +03:00
George Melikov
7fd979e49f Hardware: reworked for sphinx 2020-09-21 19:28:09 +03:00
George Melikov
9a074f2843 Hardware raw mediawiki->rst conversion 2020-09-21 19:28:09 +03:00
Alexander Motin
2257242384 Document l2arc_meta_percent. (#47) 
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
 2020-08-26 18:38:39 +03:00
Karsten Weiss
5c67d3d1fc Spelling fixes 2020-08-02 03:39:10 -05:00
George Melikov
76a1733a63 Fix table style in ZIO Scheduler (#42) 
fix #39
 2020-07-29 23:01:01 +03:00
Karsten Weiss
4257a8a364 Update ZIO Scheduler.rst 2020-07-27 00:48:35 +03:00
Richard Laager
999405d73c Rename Performance and tuning 
This now uses title case.

Signed-off-by: Richard Laager <rlaager@wiktel.com>
 2020-05-25 01:49:43 -05:00