freebsd-nq/module
Brian Behlendorf 9eb361aaa5 Default to --disable-debug-kmem
The default kmem debugging (--enable-debug-kmem) can severely impact
performance on large-scale NUMA systems due to the atomic operations
used in the memory accounting. A 32-thread fio test running on a
40-core 80-thread system and performing 100% cached reads with kmem
debugging is:

Enabled:
READ: io=177071MB, aggrb=2951.2MB/s, minb=2951.2MB/s, maxb=2951.2MB/s,

Disabled:
READ: io=271454MB, aggrb=4524.4MB/s, minb=4524.4MB/s, maxb=4524.4MB/s,

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Issues #463
2015-07-21 11:47:10 -07:00
..
spl Default to --disable-debug-kmem 2015-07-21 11:47:10 -07:00
splat Support parallel build trees (VPATH builds) 2015-07-17 12:53:11 -07:00
.gitignore gitignore: anchor entries at their respective directory 2013-04-02 11:07:52 -07:00
Makefile.in Fix modules installation directory 2014-10-28 09:49:24 -07:00