From: Christoph Hellwig <hch@infradead.org>
To: "Venkatesan, Ganesh" <ganesh.venkatesan@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>,
jgarzik@pobox.com, netdev <netdev@oss.sgi.com>
Subject: Re: [PATCH netdev-2.6 7/10] ixgb: Replace kmalloc with vmalloc to allocate driver local data structures
Date: Fri, 29 Oct 2004 14:08:17 +0100 [thread overview]
Message-ID: <20041029130817.GA12301@infradead.org> (raw)
In-Reply-To: <468F3FDA28AA87429AD807992E22D07E0312853C@orsmsx408>
On Fri, Oct 29, 2004 at 05:50:45AM -0700, Venkatesan, Ganesh wrote:
> This is a trade-off between space allocated via kmalloc and vmalloc. My
> understanding is that kmalloc space is more limited than vmalloc. Is
> this incorrect?
Yes. kmalloc space is only limited by the amount of free memory you have
in your system, vmalloc has very low absolute limits (down to 64MB in
some configurations)..
> With the original implementation that used kmalloc for all allocations
> in the driver, I have noticed allocation failures when the ring sizes
> were set to 4096.
4096 what?
next prev parent reply other threads:[~2004-10-29 13:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-29 12:50 [PATCH netdev-2.6 7/10] ixgb: Replace kmalloc with vmalloc to allocate driver local data structures Venkatesan, Ganesh
2004-10-29 13:08 ` Christoph Hellwig [this message]
2004-10-29 15:28 ` Jon Mason
2004-10-29 17:02 ` Jeff Garzik
2004-10-29 17:36 ` William Lee Irwin III
2004-10-29 18:26 ` Jeff Garzik
2004-10-29 18:29 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2004-10-29 15:35 Venkatesan, Ganesh
2004-10-29 16:41 ` Jon Mason
2004-10-29 12:11 Ganesh Venkatesan
2004-10-29 12:14 ` Christoph Hellwig
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