| To: | Andrew Morton <akpm@xxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH] NUMA aware allocation of transmit and receive buffers for e1000 |
| From: | Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx> |
| Date: | Wed, 18 May 2005 08:55:39 -0700 |
| Cc: | Christoph Lameter <christoph@xxxxxxxxxxx>, davem@xxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, shai@xxxxxxxxxxxx |
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| In-reply-to: | <20050517215845.2f87be2f.akpm@osdl.org> |
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| Reply-to: | Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
On 5/17/05, Andrew Morton <akpm@xxxxxxxx> wrote: > I think the e1000 driver is being a bit insane there. I figure that Do you mean insane to use vmalloc? > sizeof(struct e1000_buffer) is 28 on 64-bit, so even with 4k pagesize we'll > always succeed in being able to support a 32k/32 = 1024-entry Tx ring. > > Is there any real-world reason for wanting larger ring sizes than that? > > We have had cases where allocation of 32K of memory (via kmalloc) fails. ganesh. |
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