Hello, I recently have just passed a server of FreeBSD 4.2 to FreeBSD 5.3. The nasty surprise being which I note a notable reduction in the performances. The machine is a HP LT6000r, quadri Xeon 700 with 2Go of RAM.

The results are appreciably the same ones with a kernel including or not "options SMP".

Did I miss some thing? or perhaps did this already arrive at others? In particular, I has just crossed this in
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html




options SCHED_4BSD # 4BSD scheduler


The traditional scheduler for FreeBSD. Depending on your system's workload, you may gain performance by using the new ULE scheduler for FreeBSD that has been designed specially for SMP, but works just fine on UP systems too. If you wish to try it out, replace SCHED_4BSD with SCHED_ULE in your configuration file.

Did you already test?


By advance, thank you,

--
Hubert Adgi�

ISP Informatique
www.ispinfo.fr
0890 710 147


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