From owner-freebsd-net@FreeBSD.ORG  Fri Aug 31 15:54:10 2012
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Date: Fri, 31 Aug 2012 22:54:05 +0700
From: Eugene Grosbein <egrosbein@rdtc.ru>
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To: Adrian Chadd <adrian@freebsd.org>
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Cc: pyunyh@gmail.com, freebsd-net@freebsd.org,
	Lev Serebryakov <lev@freebsd.org>, Ian Smith <smithi@nimnet.asn.au>
Subject: Re: Bad routing performance on 500Mhz Geode LX with CURRENT, ipfw
 and mpd5
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31.08.2012 13:54, Adrian Chadd пишет:
> Just as a data point - disable preemption and try again?

I've rebuilt by kernel with SCHED_ULE and excluded PREEMPTION.
Stock driver works without changes in behaviour and driver from HEAD
now works very similar to old one: LA is not higher than 2 and
userland is pretty responsive. Also, transfer speed with new driver is
several percent more. That's good.

Care to explain such dramatic difference for new driver
with/without PREEMPTION for relatively slow uniprocessor system?

> And run 4BSD + no preemption, try again?

I'll try that too in short time.

Eugene Grosbein