From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Cc: Bryan Rosenburg <rosnbrg@us.ibm.com>,
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: Sat, 15 Jul 2006 02:00:02 +0200 [thread overview]
Message-ID: <200607150200.03494.arnd@arndb.de> (raw)
In-Reply-To: <20060714233739.GA11487@monkey.ibm.com>
On Saturday 15 July 2006 01:37, Mike Kravetz wrote:
> In addition, there has been some discussion of these patches on IRC.
> Some remaining issues/questions are:
> - Exactly how much overhead does the statistic gathering introduce?
> - What would be the cost of disabling preemption for more accurate statistics?
> - What would be the cost of disabling interrupts for more accurate statistics?
> - Should we extend this statistic gathering to RTAS calls?
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?
Arnd <><
next prev parent reply other threads:[~2006-07-15 0:00 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 ` Arnd Bergmann [this message]
2006-07-15 0:06 ` [PATCH 0/3] powerpc: Instrument Hypervisor Calls Mike Kravetz
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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