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Date: Wed, 15 Sep 2010 23:34:37 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.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: <20100915193437.GA28455@lenovo>
References: <20100911114404.GE13563@erda.amd.com> <20100911124537.GA22850@elte.hu> <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>
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On Wed, Sep 15, 2010 at 08:44:24PM +0200, Robert Richter wrote:
...
> 
> Do you know at which period the counters running for the following?
> 
>  perf record ./hackbench 10
>  perf record -e cycles -e instructions -e cache-references \
>      -e cache-misses -e branch-misses -a -- <cmd>
> 
> I couldn't find something about this in the man page.
> 

It's on top of tools/perf/builtin-record.c so by default they
should be sampled with frequency 1KHz. Frederic or Peter knows
for sure ;)

	-- Cyrill