From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.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, 1 Sep 2010 13:27:43 -0300 [thread overview]
Message-ID: <20100901162743.GA12870@amt.cnet> (raw)
In-Reply-To: <4C7E179D.6000405@redhat.com>
On Wed, Sep 01, 2010 at 12:06:37PM +0300, Avi Kivity wrote:
> 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.
Was just wondering whether there was a freeze. Patchset looks good
(ratelimit can be disabled manually).
next prev parent reply other threads:[~2010-09-01 17:03 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
2010-09-01 16:27 ` Marcelo Tosatti [this message]
2010-09-02 8:30 ` Avi Kivity
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