mirror_zfs/module
shodanshok 022bf86370 Increase L2ARC write rate and headroom
Current L2ARC write rate and headroom parameters are very conservative:
l2arc_write_max=8M and l2arc_headroom=2 (ie: a full L2ARC writes at
8 MB/s, scanning 16/32 MB of ARC tail each time; a warming L2ARC runs
at 2x these rates).

These values were selected 15+ years ago based on then-current SSDs
size, performance and endurance. Today we have multi-TB, fast and
cheap SSDs which can sustain much higher read/write rates.

For this reason, this patch increases l2arc_write_max to 32M and
l2arc_headroom to 8 (4x increase for both).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Gionatan Danti <g.danti@assyoma.it>
Closes #15457
2024-11-15 10:15:00 -08:00
..
avl Suppress Clang Static Analyzer false positive in the AVL tree code. 2023-03-08 13:51:21 -08:00
icp module/icp/asm-arm/sha2: enable non-SIMD asm kernels on armv5/6 2024-08-26 15:10:16 -07:00
lua lua: add flex array field to TString type 2024-11-05 15:43:52 -08:00
nvpair xdr: header cleanup 2024-04-29 13:50:05 -07:00
os config: remove HAVE_HAS_CAPABILITY 2024-11-15 10:15:00 -08:00
unicode Illumos #15286: do_composition() needs sign awareness 2023-01-05 11:16:21 -08:00
zcommon Avoid computing strlen() inside loops 2024-11-05 15:43:52 -08:00
zfs Increase L2ARC write rate and headroom 2024-11-15 10:15:00 -08:00
zstd Resolve WS-2021-0184 vulnerability in zstd 2023-02-02 15:12:51 -08:00
.gitignore FreeBSD: Ignore symlink to i386 includes 2022-08-02 16:34:23 -07:00
Kbuild.in Add SIMD metadata in /proc on Linux 2024-11-05 15:43:52 -08:00
Makefile.bsd Finally drop long disabled vdev cache. 2023-06-09 12:40:55 -07:00
Makefile.in check-zstd-symbols: also ignore __pfx_ symbols 2023-09-19 08:52:06 -07:00