mirror_zfs/man
Alexander Motin 44e6a07bff 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
2025-12-19 19:55:14 -08:00
..
man1 Harmonize on American spelling in several places 2025-04-16 09:59:45 -07:00
man4 ZIO: Set minimum number of free issue threads to 32 2025-12-19 19:55:14 -08:00
man5 SPDX: license tags: CDDL-1.0 2025-04-16 09:59:44 -07:00
man7 Increase meta-dnode redundancy in "some" mode 2025-08-05 13:15:44 -04:00
man8 Introduce zfs rewrite subcommand (#17246) 2025-08-07 12:34:28 -04:00
Makefile.am Introduce zfs rewrite subcommand (#17246) 2025-08-07 12:34:28 -04:00