Hi
Kris Kennaway wrote:
CPU states: 9.5% user, 0.0% nice, 82.0% system, 0.5%
interrupt, 8.0% idle
A wild idea that might not help: try reducing kern.hz in
loader.conf to
something like 100 and see if something significant changes.
Usually on PHP backends slow PHP code eats most of the CPU time. I
have %user much bigger than %system in CPU states.
But now %system is much bigger than %user and I can conclude that on
8-core server FreeBSD consumes more CPU time than PHP.
That is one possibility, but you still need to look at the actual
throughput on these machines before making conclusions about which is
performing better. Can you please provide those numbers for 6.x, 7.x
with ULE and 4BSD on the 4-core and 8-core systems?
Ok, here's results of practical research. The following is approximate
maximum qps that backends can survive with my workload:
7-STABLE quad ULE 20
7-STABLE quad 4BSD 17
6-STABLE quad 14
6-STABLE dual 21
Linux CentOS 5 quad >50
With best regards,
Alexey Popov
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