mirror_zfs/man
Alexander Motin aaf374bd40 ZIO: Set minimum number of free issue threads to 32
Free issue threads might block waiting for synchronous DDT, BRT or
GANG header reads. So unlike other taskqs using ZTI_SCALE to scale
with number of CPUs, here we also need some amount of threads to
potentially saturate pool reads.  I am not sure we always want the
96 threads we had before ZTI_SCALE introduction at #11966 on small
systems, but lets make it at least 32.

While here, make free taskqs configurable, similar to read and
write ones.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17903
2025-11-12 13:06:39 -08:00
..
man1 Enable zhack to work properly with 4k sector size disks 2025-09-10 15:01:32 -07:00
man4 ZIO: Set minimum number of free issue threads to 32 2025-11-12 13:06:39 -08:00
man5 manuals: Audit/bump dates for last content change 2025-09-09 17:04:19 -07:00
man7 zfsprops(7): attempt to clarify the keylocation description 2025-09-15 12:43:57 -07:00
man8 man: describe zfs-rewrite method and properties 2025-11-12 13:06:10 -08:00
Makefile.am man: add silent rules for mancheck 2025-09-17 16:33:52 -07:00