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Date: Thu, 16 Sep 2010 00:39:48 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Stephane Eranian <eranian@google.com>
Cc: Robert Richter <robert.richter@amd.com>, Ingo Molnar <mingo@elte.hu>,
        Peter Zijlstra <peterz@infradead.org>, Don Zickus <dzickus@redhat.com>,
        "fweisbec@gmail.com" <fweisbec@gmail.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "ying.huang@intel.com" <ying.huang@intel.com>,
        "ming.m.lin@intel.com" <ming.m.lin@intel.com>,
        "yinghai@kernel.org" <yinghai@kernel.org>,
        "andi@firstfloor.org" <andi@firstfloor.org>
Subject: Re: [PATCH] perf, x86: catch spurious interrupts after disabling
	counters
Message-ID: <20100915203948.GB28455@lenovo>
References: <20100912095202.GF13563@erda.amd.com> <20100913143713.GK13563@erda.amd.com> <20100914174132.GN13563@erda.amd.com> <20100915162034.GO13563@erda.amd.com> <AANLkTimWoE5XiYSr8jx=RFS5Nb9d4_wWe=c-W3oMj8dH@mail.gmail.com> <20100915170057.GQ13563@erda.amd.com> <AANLkTi=yvDF34e5rYqJt=Av7dhSwBLjXp=r_EfEAMLJY@mail.gmail.com> <20100915184424.GS13563@erda.amd.com> <20100915193437.GA28455@lenovo> <AANLkTimPh7bo1XxTK8bnisvLq8pCySUV6XJspw8m-Wwa@mail.gmail.com>
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On Wed, Sep 15, 2010 at 10:21:10PM +0200, Stephane Eranian wrote:
> When you do perf record foo, it's equivalent to
> perf record -e cycles:uk -F 1000 foo
>

yup, thanks
 
> I think there is a problem with perf record in case you provide
> multiple events. It is going to sample on all of them at the same
> frequency. You may not always want that, but I don't think there
> is a way to change that.
> 

indeed, without perf-tool code changes but i think you still may run
multiple instances of perf-tool :)