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Date:      Fri, 07 Sep 2012 00:04:39 +0700
From:      Eugene Grosbein <egrosbein@rdtc.ru>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        pyunyh@gmail.com, freebsd-net@freebsd.org, Lev Serebryakov <lev@freebsd.org>, Ian Smith <smithi@nimnet.asn.au>
Subject:   Re: vr(4) troubles for AMD Geode CS5536 chipset
Message-ID:  <5048D7A7.1030708@rdtc.ru>
In-Reply-To: <CAJ-Vmomedv-mEV3D1WHR9_eLirE=ORSVndeJJgpFweCuRPuyoA@mail.gmail.com>
References:  <1865271844.20120829131610@serebryakov.spb.ru>	<CAHu1Y70MynCMQTrJUMwTZ0%2BLrM1JiZFt_B77028XHfoiRgzmaA@mail.gmail.com>	<1807373989.20120829223125@serebryakov.spb.ru>	<20120830152726.A33776@sola.nimnet.asn.au>	<534292400.20120830131158@serebryakov.spb.ru>	<20120831180721.GB3208@michelle.cdnetworks.com>	<50404F91.8080302@rdtc.ru>	<20120903184049.GB3730@michelle.cdnetworks.com>	<50443888.9080400@rdtc.ru>	<20120903214333.GC3730@michelle.cdnetworks.com>	<5044772C.8090302@rdtc.ru>	<CAJ-VmonQhGShMASEkrxnrDU8xOQBJU%2BGnV0Nmeg4Lz2xACBRpw@mail.gmail.com>	<5046FE57.3050903@rdtc.ru> <CAJ-Vmomedv-mEV3D1WHR9_eLirE=ORSVndeJJgpFweCuRPuyoA@mail.gmail.com>

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07.09.2012 00:00, Adrian Chadd пишет:
> On 5 September 2012 00:25, Eugene Grosbein <egrosbein@rdtc.ru> wrote:
>> 05.09.2012 14:03, Adrian Chadd пишет:
>>> waaaaaaaaait.
>>>
>>> Did you say that removing preemption from your kernel fixed your
>>> performance issues?
>>
>> Yes. Also, it seems my original vr(4) troubles (RX path problem)
>> have gone away since I run the kernel without preemption.
> 
> Ok. Can you please compile up both a preempt and non-preempt 4BSD
> kernel with KTR enabled?

Yes, I can easily. What should I do next?
 
> That way we can capture some schedgraph traces and see what the heck
> is going on.

I have not used KTR before, please direct me :-)



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