From: Christoph Hellwig <hch@infradead.org>
To: Lachlan McIlroy <lachlan@sgi.com>, xfs-dev <xfs-dev@sgi.com>,
xfs-oss <xfs@oss.sgi.com>
Subject: Re: [PATCH] Tweak tracing allocation sizes
Date: Tue, 2 Sep 2008 17:54:01 -0400 [thread overview]
Message-ID: <20080902215401.GD9204@infradead.org> (raw)
In-Reply-To: <20080902062722.GF15962@disturbed>
On Tue, Sep 02, 2008 at 04:27:22PM +1000, Dave Chinner wrote:
> > - maybe a very large global trace buffer that is allocated at mount
> > time and shared by all inodes?
>
> Sure, we've got that for various other trace types (e.g. the "vnode"
> trace). You'd need to add idbg stuff for filtering based on the
> inode the buffer belongs to....
That's probably the best idea. Currently all these per-object ktrace
buffers do really large no-MAYFAIL allocation all over. They are in
fact the remaining reason not to simply directly call vmalloc for
large allocations instead of all our current mess in the kmem_
functions.
next prev parent reply other threads:[~2008-09-02 21:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-02 5:48 [PATCH] Tweak tracing allocation sizes Lachlan McIlroy
2008-09-02 5:56 ` Dave Chinner
2008-09-02 6:12 ` Lachlan McIlroy
2008-09-02 6:27 ` Dave Chinner
2008-09-02 21:54 ` Christoph Hellwig [this message]
2008-09-02 6:50 ` Andi Kleen
2008-09-02 21:55 ` Christoph Hellwig
2008-09-03 7:06 ` Andi Kleen
2008-09-03 12:06 ` Christoph Hellwig
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