* E1000 zero copy
@ 2006-06-20 6:55 Heng Du
2006-06-20 8:17 ` Arjan van de Ven
0 siblings, 1 reply; 4+ messages in thread
From: Heng Du @ 2006-06-20 6:55 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-net
Hi all,
I want to know if there is an existing patch to e1000 network driver
to enable zero copy.
If so, can you share me with it?
If not, is it accepable if I submit a patch?
Many thanks
Regards,
-Debbie
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: E1000 zero copy
2006-06-20 6:55 E1000 zero copy Heng Du
@ 2006-06-20 8:17 ` Arjan van de Ven
[not found] ` <8C8631AA59959A1-528-3CB0@FWM-D36.sysops.aol.com>
0 siblings, 1 reply; 4+ messages in thread
From: Arjan van de Ven @ 2006-06-20 8:17 UTC (permalink / raw)
To: Heng Du; +Cc: linux-kernel, linux-net
On Tue, 2006-06-20 at 14:55 +0800, Heng Du wrote:
> Hi all,
>
> I want to know if there is an existing patch to e1000 network driver
> to enable zero copy.
> If so, can you share me with it?
> If not, is it accepable if I submit a patch?
> Many thanks
Hi,
The e1000 driver supports zero copy for sending already for a long time
(if I remember correctly, since 2.4.3 kernel or so) already. Zero copy
receive is a much harder issue, and for that you need more
infrastructure; I think the IOAT patches that got merged last night in
the post-2.6.17 tree will help for that, but I do not know if what got
merged is sufficient already for full support.
I hope this answers your question; if not I would like to ask you to
explain in more detail what you mean by "enable zero copy"...
Greetings,
Arjan van de Ven
^ permalink raw reply [flat|nested] 4+ messages in thread
* Dropped TCP connections with 2.6.X kernel
[not found] ` <8C8631AA59959A1-528-3CB0@FWM-D36.sysops.aol.com>
@ 2006-06-22 7:28 ` daveflinux
2006-06-22 11:49 ` Chris Boot
0 siblings, 1 reply; 4+ messages in thread
From: daveflinux @ 2006-06-22 7:28 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-net
Hi,
We're using a 2.6.X kernel,
and are experiencing intermittent dropped connections when the number
of concurrent connections exceeds ~ 1000.
Does anybody have any insight into what might be happening here and/or
troubleshooting techniques
for isolating the problem.
What system resources is TCP dependent on?
Many thanks,
Dave
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Dropped TCP connections with 2.6.X kernel
2006-06-22 7:28 ` Dropped TCP connections with 2.6.X kernel daveflinux
@ 2006-06-22 11:49 ` Chris Boot
0 siblings, 0 replies; 4+ messages in thread
From: Chris Boot @ 2006-06-22 11:49 UTC (permalink / raw)
To: daveflinux; +Cc: linux-kernel, linux-net
daveflinux@aim.com wrote:
> Hi,
>
> We're using a 2.6.X kernel,
> and are experiencing intermittent dropped connections when the number
> of concurrent connections exceeds ~ 1000.
>
> Does anybody have any insight into what might be happening here
> and/or troubleshooting techniques
> for isolating the problem.
> What system resources is TCP dependent on?
>
> Many thanks,
> Dave
Are all these connections handled by a single process? If so, you're
probably running into the limit of open file descriptors (1024 usually).
Look at 'help ulimit' to see how to increase the limit.
HTH,
Chris
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-06-22 11:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-06-20 6:55 E1000 zero copy Heng Du
2006-06-20 8:17 ` Arjan van de Ven
[not found] ` <8C8631AA59959A1-528-3CB0@FWM-D36.sysops.aol.com>
2006-06-22 7:28 ` Dropped TCP connections with 2.6.X kernel daveflinux
2006-06-22 11:49 ` Chris Boot
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