From: Avi Kivity <avi@redhat.com>
To: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: Re: [PATCH v2 5/5] KVM: MMU: lower the aduit frequency
Date: Wed, 01 Sep 2010 12:06:37 +0300 [thread overview]
Message-ID: <4C7E179D.6000405@redhat.com> (raw)
In-Reply-To: <4C7C687D.2000401@cn.fujitsu.com>
On 08/31/2010 05:27 AM, Xiao Guangrong wrote:
>
>> I've always seen progress from the guest while running with audit
>> enabled (its slow, but its not supposed to be fast anyway).
>>
>> Did you experience a freeze?
>>
> There is a simply test in the guest if it's not rate limit:
>
> # time ls
> anaconda-ks.cfg Documents install.log Music Public Videos
> Desktop Downloads install.log.syslog Pictures Templates
>
> real 1m26.053s
> user 0m0.311s
> sys 0m1.813s
>
> 'ls' command cost about 1.5 minute, if we run the memory test program, i think
> the time/delay is unacceptable...... :-(
Marcelo, would making the ratelimit optional help? personally I think
without ratelimit audit is useless, and with ratelimit it is a lot less
useful but can still point out problems. But I haven't used it in a while.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2010-09-01 9:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-28 11:58 [PATCH 0/4] KVM: MMU: mmu audit code improved Xiao Guangrong
2010-08-28 12:00 ` [PATCH 1/4] KVM: MMU: support disable/enable mmu audit dynamicly Xiao Guangrong
2010-08-29 9:16 ` Avi Kivity
2010-08-30 1:58 ` Xiao Guangrong
2010-08-28 12:01 ` [PATCH 2/4] KVM: MMU: improve active sp audit Xiao Guangrong
2010-08-28 12:02 ` [PATCH 3/4] KVM: MMU: improve spte audit Xiao Guangrong
2010-08-28 12:03 ` [PATCH 4/4] KVM: MMU: lower the aduit frequency Xiao Guangrong
2010-08-29 9:19 ` Avi Kivity
2010-08-30 2:16 ` Xiao Guangrong
2010-08-30 6:59 ` Avi Kivity
2010-08-30 10:22 ` [PATCH v2 1/5] KVM: MMU: support disable/enable mmu audit dynamicly Xiao Guangrong
2010-08-30 10:24 ` [PATCH v2 2/5] KVM: MMU: move audit to a separate file Xiao Guangrong
2010-08-30 10:25 ` [PATCH v2 3/5] KVM: MMU: improve active sp audit Xiao Guangrong
2010-08-30 10:25 ` [PATCH v2 4/5] KVM: MMU: improve spte audit Xiao Guangrong
2010-08-30 10:26 ` [PATCH v2 5/5] KVM: MMU: lower the aduit frequency Xiao Guangrong
2010-08-30 15:47 ` Marcelo Tosatti
2010-08-31 2:27 ` Xiao Guangrong
2010-09-01 9:06 ` Avi Kivity [this message]
2010-09-01 16:27 ` Marcelo Tosatti
2010-09-02 8:30 ` Avi Kivity
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