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Date: Wed, 01 Sep 2010 12:06:37 +0300 From: Avi Kivity <avi@...hat.com> To: Xiao Guangrong <xiaoguangrong@...fujitsu.com> CC: Marcelo Tosatti <mtosatti@...hat.com>, LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org> Subject: Re: [PATCH v2 5/5] KVM: MMU: lower the aduit frequency 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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