From: Mike Kravetz <kravetz@us.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Bryan Rosenburg <rosnbrg@us.ibm.com>,
linuxppc-dev@ozlabs.org, Nathan Lynch <ntl@pobox.com>,
Paul Mackerras <paulus@samba.org>,
Christopher Yeoh <cyeoh@samba.org>
Subject: Re: [PATCH 0/3] powerpc: Instrument Hypervisor Calls
Date: Fri, 14 Jul 2006 17:06:24 -0700 [thread overview]
Message-ID: <20060715000624.GH6824@monkey.ibm.com> (raw)
In-Reply-To: <200607150200.03494.arnd@arndb.de>
On Sat, Jul 15, 2006 at 02:00:02AM +0200, Arnd Bergmann wrote:
> What happened to the question whether to use PURR values for also measuring
> cycles spent executing the hcall as opposed to cycles that passed before
> the hcall returns. Did that turn out not giving extra information after all
> or was there a different reason to drop that idea?
Oops, forgot that as an additional issue/question. In this patch, I went
back to mftb() as 'wall time' made more sense for the group wanting this
functionality. It is easy to switch, or collect both (I think). Since I
started with mftb went to PURR and then back to mftb, it certainly does
look like an agument to try and collect both. :)
--
Mike
next prev parent reply other threads:[~2006-07-15 0:06 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-14 23:37 [PATCH 0/3] powerpc: Instrument Hypervisor Calls Mike Kravetz
2006-07-14 23:39 ` [PATCH 1/3] powerpc: Instrument Hypervisor Calls: merge headers Mike Kravetz
2006-07-14 23:40 ` [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers Mike Kravetz
2006-07-15 0:15 ` Nathan Lynch
2006-07-15 0:41 ` Mike Kravetz
2006-07-15 8:03 ` Nathan Lynch
2006-07-14 23:41 ` [PATCH 3/3] powerpc: Instrument Hypervisor Calls: add debugfs files Mike Kravetz
2006-07-15 0:00 ` [PATCH 0/3] powerpc: Instrument Hypervisor Calls Arnd Bergmann
2006-07-15 0:06 ` Mike Kravetz [this message]
2006-07-15 15:30 ` Anton Blanchard
2006-07-15 16:42 ` Arnd Bergmann
2006-07-15 22:07 ` Anton Blanchard
2006-07-16 23:02 ` Luke Browning
2006-07-17 2:02 ` Luke Browning
2006-07-16 3:53 ` Olof Johansson
2006-07-16 22:53 ` Luke Browning
2006-07-16 23:09 ` Olof Johansson
-- strict thread matches above, loose matches on Subject: below --
2006-07-21 6:38 Mike Kravetz
2006-07-18 20:47 Mike Kravetz
2006-07-18 21:00 ` Paul Mackerras
2006-07-19 3:36 ` Mike Kravetz
2006-07-19 22:11 ` Mike Kravetz
2006-07-18 21:29 ` Mike Kravetz
2006-07-18 22:38 ` Olof Johansson
2006-06-22 22:56 Mike Kravetz
2006-06-23 0:28 ` Segher Boessenkool
2006-07-10 20:35 ` Mike Kravetz
2006-07-10 20:49 ` Arnd Bergmann
2006-07-12 18:05 ` Mike Kravetz
2006-06-14 3:47 Mike Kravetz
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