question about sched_ule and sched_4bsd
Stefanita Rares Dumitrescu
katmai at keptprivate.com
Sun Nov 21 02:40:03 MSK 2010
ok guys i have something very puzzling:
i am using
i upgraded the system from freebsd7, and on my old freebsd7 system, i
was running SCHED_4BSD. the server worked rather ok, however, when i
switched to bsd 8.1, i decided to try sched_ule, and bummer, the server
load was shooting through the roof, the php-cgi processes were almost
constantly in RUN state, and basically the system was unusable for heavy
i am talking about a dual xeons / 16 gb ram machine here.
anyway i recompiled the kernel, and got back to SCHED_4BSD, but i would
just want to know if anyone has any experience and advice with this, and
why the schedulers performance difference.
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