From: Chris Wright <chrisw@sous-sol.org>
To: Naresh Rapolu <nrapolu@purdue.edu>
Cc: kvm@vger.kernel.org
Subject: Re: Hardware performance events are not counted by "perf" in a 2.6.31.12 KVM guest
Date: Fri, 26 Mar 2010 21:38:36 -0700 [thread overview]
Message-ID: <20100327043836.GL1744@sequoia.sous-sol.org> (raw)
In-Reply-To: <4BAD6630.80608@purdue.edu>
* Naresh Rapolu (nrapolu@purdue.edu) wrote:
> "perf" tool does not count hardware performance events ( cache misses
> etc) in a KVM guest
The guest does not see a PMU. For basic profiling you can use timer
based in guest, but there is not yet support for PMU.
thanks,
-chris
next prev parent reply other threads:[~2010-03-27 4:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-27 1:58 Hardware performance events are not counted by "perf" in a 2.6.31.12 KVM guest Naresh Rapolu
2010-03-27 4:38 ` Chris Wright [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-03-27 2:03 Naresh Rapolu
2010-03-28 11:57 ` Joerg Roedel
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