From: Tony Breeds <tony@bakeyournoodle.com>
To: George Dunlap <dunlapg@umich.edu>
Cc: Xen-devel <xen-devel@lists.xensource.com>
Subject: Re: [RFC][PATCH] 2/3] [TOOLS][XENTRACE] Update tools to write data to disk in a known endian'ness.
Date: Fri, 1 Dec 2006 16:43:47 +1100 [thread overview]
Message-ID: <20061201054347.GI27551@bakeyournoodle.com> (raw)
In-Reply-To: <de76405a0611300827w271b8b8ya4f374824f4b1230@mail.gmail.com>
On Thu, Nov 30, 2006 at 11:27:27AM -0500, George Dunlap wrote:
> Do you have an idea how much extra cpu this takes for high-bandwidth
> tracing?
I don't imagine that hton*() are that expensive, and fwrite already
buffers intreranll for 128k writes so with these patches you won't be
touching the disk anymore often.
> I'm using xentrace for performance analysis, and it's already got a
> measurable impact due to the disk bandwidth and copying. I'd like to
> keep that as minimal as possible.
To be honnest I'm not doing any tracing, this patchset is the start
required to use xentrace on PPC.
Yours Tony
linux.conf.au http://linux.conf.au/ || http://lca2007.linux.org.au/
Jan 15-20 2007 The Australian Linux Technical Conference!
next prev parent reply other threads:[~2006-12-01 5:43 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-30 5:59 [RFC][PATCH] 0/3] [V2] Update xentrace to be compatable with PPC Tony Breeds
2006-11-30 5:59 ` [RFC][PATCH] 1/3] [XEN] Use explicit bit sized fields for exported xentrace data Tony Breeds
2006-11-30 13:02 ` Mark Williamson
2006-11-30 16:58 ` George Dunlap
2006-11-30 17:03 ` Keir Fraser
2006-12-01 2:29 ` Mark Williamson
2006-12-01 11:32 ` Jimi Xenidis
2006-12-01 17:54 ` George Dunlap
2006-12-01 18:37 ` Keir Fraser
2006-12-05 16:54 ` Mark Williamson
2006-12-05 20:05 ` George Dunlap
2006-12-06 16:10 ` [RFC][PATCH] 1/3] [XEN] Use explicit bit sized fieldsfor " Ian Pratt
2006-12-07 2:43 ` Mark Williamson
2006-12-07 5:29 ` Tony Breeds
2006-12-07 10:32 ` Keir Fraser
2006-12-07 14:21 ` Ian Pratt
2006-12-07 18:25 ` George Dunlap
2006-12-08 10:52 ` [RFC][PATCH] 1/3] [XEN] Use explicit bit sizedfieldsfor " Ian Pratt
2006-12-08 20:28 ` George Dunlap
2006-12-04 18:20 ` [RFC][PATCH] 1/3] [XEN] Use explicit bit sized fields for " Mark Williamson
2006-12-12 17:29 ` LTTng Xen port Mathieu Desnoyers
2006-12-12 21:20 ` Ian Pratt
2006-12-12 22:14 ` Mathieu Desnoyers
2006-12-13 2:25 ` Tony Breeds
2006-12-15 5:02 ` Mark Williamson
2006-12-28 3:08 ` M.A. Williamson
2007-03-09 1:20 ` LTTng Xen port : finally in a repository near you Mathieu Desnoyers
2007-06-25 8:43 ` INAKOSHI Hiroya
2007-06-27 0:37 ` Mark Williamson
2007-06-27 16:22 ` Mathieu Desnoyers
2007-06-27 16:25 ` Keir Fraser
2007-06-27 16:14 ` Mathieu Desnoyers
2007-06-28 5:07 ` INAKOSHI Hiroya
2007-06-28 6:58 ` Mathieu Desnoyers
2007-06-28 12:32 ` INAKOSHI Hiroya
2007-06-28 15:08 ` Mathieu Desnoyers
2007-06-29 0:19 ` INAKOSHI Hiroya
2006-11-30 5:59 ` [RFC][PATCH] 3/3] [TOOLS][XENTRACE] Various tidyups to xentrace tools Tony Breeds
2006-11-30 12:57 ` Mark Williamson
2006-12-01 5:39 ` Tony Breeds
2006-11-30 5:59 ` [RFC][PATCH] 2/3] [TOOLS][XENTRACE] Update tools to write data to disk in a known endian'ness Tony Breeds
2006-11-30 13:12 ` Mark Williamson
2006-12-01 5:23 ` Tony Breeds
2006-12-04 18:22 ` Mark Williamson
2006-11-30 16:27 ` George Dunlap
2006-12-01 5:43 ` Tony Breeds [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-12-04 3:47 [RFC][PATCH] 0/3] [V3] Update xentrace to be compatable with PPC Tony Breeds
2006-12-04 3:47 ` [RFC][PATCH] 2/3] [TOOLS][XENTRACE] Update tools to write data to disk in a known endian'ness Tony Breeds
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