Hi.
Kris Kennaway wrote:
Now FreeBSD 7-STABLE ULE 8-core server without optimized PHP
realpath_cache_size (producing 2000+ lstats per request) can handle up
to ~24 rps as opposed to max. 17 rps without your patch. %sys never
grows over %user with your patch. On the server with optimized
realpath_cache_size there's no visible influence of your patch.
You said "20" before for this configuration, so I'm a bit suspicious
about how seriously to treat your measurements :)
Sorry, my mistake. s/ULE/4BSD.
Anyway, please obtain another lock profiling trace using the same
conditions as the previous one (same workload & duration, etc), so we
can compare what changed.
OK, I'll make it a little bit later.
Also I tried to find what else is slow in FreeBSD, I tried hwpmc as
module and in kernel, but it fails with error:
pmc: Unknown Intel CPU.
module_register_init: MOD_LOAD (hwpmc, 0xffffffff804833e0,
0xffffffff809338a0) error 78
This is related to
http://www.freebsd.org/cgi/query-pr.cgi?pr=amd64%2F111994&cat=
and it is impossible to use hwpmc with modern CPUs.
Is kgmon profiling usable on FreeBSD 7?
With best regards,
Alexey Popov
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