Date: Wed, 25 Aug 2004 11:56:03 +0800 From: <yangshazhou@hotmail.com> To: <freebsd-smp@freebsd.org> Subject: Worse performance with SCHED_ULE? Message-ID: <BAY17-DAV152IAGjCl700024334@hotmail.com>
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Hi all,
I've benched SCHED_4BSD and SCHED_ULE in 4-way Xeon box, 5.2.1-release,
with lmbench and volanomark. Both benchmarks show performance decreasing.
SCHED_4BSD SCHED_ULE
lat_proc fork 570 570
lat_ctx 10 6.1 14.8
lat_ctx 150 10.45 16.6
volanomark 7024 4607
I built sun jdk1.4.2 with libkse as native thread. If with libc_r as
native thread, the result is incredible 6161 and 10643, showing SCHED_ULE
brings big boost with libc_r. libc_r is user-level thread lib, we know. Is
there anything wrong?
Is ULE scheduler stable in 5.2.1? We experienced a lot of errors when
running apache benchmarks.
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