* Network Performance Ingo's RT-Preempt
@ 2005-03-27 22:27 Christensen Tom
2005-03-30 8:42 ` Matt Mackall
0 siblings, 1 reply; 3+ messages in thread
From: Christensen Tom @ 2005-03-27 22:27 UTC (permalink / raw)
To: linux-kernel
I'm running 2.6.11 with Ingo's Preempt patch
(realtime-preempt-2.6.11-final-V0.7.40-04). The system is SMP with a
broadcom NIC (tg3 driver). I am seeing truly appalling network performance
(2-4kbps on a 1gbps network). Is this a known issue? I know this patch is
not production ready, what traces/logs do you need/want to be able to
debug/fix this?
Thanks,
Tom
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Network Performance Ingo's RT-Preempt
2005-03-27 22:27 Network Performance Ingo's RT-Preempt Christensen Tom
@ 2005-03-30 8:42 ` Matt Mackall
2005-03-30 8:58 ` Lee Revell
0 siblings, 1 reply; 3+ messages in thread
From: Matt Mackall @ 2005-03-30 8:42 UTC (permalink / raw)
To: Christensen Tom; +Cc: linux-kernel
On Sun, Mar 27, 2005 at 10:27:40PM +0000, Christensen Tom wrote:
> I'm running 2.6.11 with Ingo's Preempt patch
> (realtime-preempt-2.6.11-final-V0.7.40-04). The system is SMP with a
> broadcom NIC (tg3 driver). I am seeing truly appalling network performance
> (2-4kbps on a 1gbps network). Is this a known issue? I know this patch is
> not production ready, what traces/logs do you need/want to be able to
> debug/fix this?
What is your test app and what protocol does it use?
What performance do you get with mainline?
A tcpdump log is probably a good place to start. You might consider
cc:ing Ingo and possibly netdev.
--
Mathematics is the supreme nostalgia of our time.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Network Performance Ingo's RT-Preempt
2005-03-30 8:42 ` Matt Mackall
@ 2005-03-30 8:58 ` Lee Revell
0 siblings, 0 replies; 3+ messages in thread
From: Lee Revell @ 2005-03-30 8:58 UTC (permalink / raw)
To: Matt Mackall; +Cc: Christensen Tom, linux-kernel
On Wed, 2005-03-30 at 00:42 -0800, Matt Mackall wrote:
> On Sun, Mar 27, 2005 at 10:27:40PM +0000, Christensen Tom wrote:
> > I'm running 2.6.11 with Ingo's Preempt patch
> > (realtime-preempt-2.6.11-final-V0.7.40-04). The system is SMP with a
> > broadcom NIC (tg3 driver). I am seeing truly appalling network performance
> > (2-4kbps on a 1gbps network). Is this a known issue? I know this patch is
> > not production ready, what traces/logs do you need/want to be able to
> > debug/fix this?
>
> What is your test app and what protocol does it use?
>
> What performance do you get with mainline?
>
> A tcpdump log is probably a good place to start. You might consider
> cc:ing Ingo and possibly netdev.
>
Before you even bother, try the latest version. That version is too old
to be useful for debugging.
Lee
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-03-27 22:27 Network Performance Ingo's RT-Preempt Christensen Tom
2005-03-30 8:42 ` Matt Mackall
2005-03-30 8:58 ` Lee Revell
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