From: David Ahern <dsahern@gmail.com>
To: Andi Kleen <andi@firstfloor.org>,
Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: "linux-perf-use." <linux-perf-users@vger.kernel.org>
Subject: Re: Weird instruction profiling
Date: Wed, 18 Feb 2015 16:33:31 -0700 [thread overview]
Message-ID: <54E5214B.5060408@gmail.com> (raw)
In-Reply-To: <87zj8bvzqn.fsf@tassilo.jf.intel.com>
On 2/18/15 11:30 AM, Andi Kleen wrote:
>> I think Andi mentioned this to me last year -- that instruction
>> profiling was no longer reliable.
>
> It never was.
Why is that? What about profiling with other hardware counters?
David
next prev parent reply other threads:[~2015-02-18 23:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-18 9:57 Weird instruction profiling Brendan Gregg
2015-02-18 18:30 ` Andi Kleen
2015-02-18 23:33 ` David Ahern [this message]
2015-02-18 23:38 ` Andi Kleen
2015-02-18 23:46 ` David Ahern
2015-02-20 19:04 ` Brendan Gregg
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