Re: tcp bw in 2.6

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To: Ben Greear <greearb@...>

Cc: <lm@...>, Herbert Xu <herbert@...>, <torvalds@...>, <davem@...>, <wscott@...>, <netdev@...>

Date: Tuesday, October 2, 2007 - 1:21 pm

> I'm currently on 2.6.20, and have also tried 10gbe nics on 2.6.23 with

My guess is that it is a bug in the debian 2.6.18 kernel.

quoted text> Have you tried something like ttcp, iperf, or even regular ftp?

Yeah, I've factored out the code since BitKeeper, my test program,
and John's test program all exhibit the same behaviour.  Also switched
switches.

quoted text> Checked your nics to make sure they have no errors and are negotiated
> to full duplex?

Yup and yup.
-- 
---
Larry McVoy                lm at bitmover.com           http://www.bitkeeper.com
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Messages in current thread:

Re: tcp bw in 2.6, Larry McVoy, (Mon Oct 1, 8:59 pm)

Re: tcp bw in 2.6, Herbert Xu, (Tue Oct 2, 6:52 am)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 11:09 am)

Re: tcp bw in 2.6, Linus Torvalds, (Tue Oct 2, 3:27 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 3:53 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 4:33 pm)

Re: tcp bw in 2.6, Roland Dreier, (Tue Oct 2, 4:44 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 5:21 pm)

Re: tcp bw in 2.6, Pekka Pietikainen, (Wed Oct 3, 5:13 pm)

Re: tcp bw in 2.6, Larry McVoy, (Wed Oct 3, 5:23 pm)

Re: tcp bw in 2.6, Pekka Pietikainen, (Wed Oct 3, 5:50 pm)

Re: tcp bw in 2.6, John Heffner, (Tue Oct 2, 2:29 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 3:07 pm)

Re: tcp bw in 2.6, Linus Torvalds, (Tue Oct 2, 3:29 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 4:31 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 3:33 pm)

Re: tcp bw in 2.6, John Heffner, (Tue Oct 2, 3:53 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 4:14 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 4:40 pm)

Re: tcp bw in 2.6, Wayne Scott, (Tue Oct 2, 4:42 pm)

Re: tcp bw in 2.6, Linus Torvalds, (Tue Oct 2, 5:56 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 11:41 am)

Re: tcp bw in 2.6, Linus Torvalds, (Tue Oct 2, 12:34 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 12:48 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 5:16 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 5:26 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 5:47 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 6:17 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 6:32 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 6:36 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 6:59 pm)

Re: tcp bw in 2.6, David Miller, (Wed Oct 3, 4:02 am)

Re: tcp bw in 2.6, Ben Greear, (Tue Oct 2, 12:48 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 1:11 pm)

Re: tcp bw in 2.6, Ben Greear, (Tue Oct 2, 1:18 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 1:21 pm)

Re: tcp bw in 2.6, Stephen Hemminger, (Tue Oct 2, 1:54 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 2:35 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 12:25 pm)

Re: tcp bw in 2.6, Stephen Hemminger, (Tue Oct 2, 12:47 pm)

Re: tcp bw in 2.6, Daniel Schaffrath, (Mon Oct 15, 8:40 am)

Re: tcp bw in 2.6, Stephen Hemminger, (Mon Oct 15, 11:49 am)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 12:49 pm)

Re: tcp bw in 2.6, Stephen Hemminger, (Tue Oct 2, 1:10 pm)

Re: tcp bw in 2.6, Linus Torvalds, (Mon Oct 1, 10:14 pm)

Re: tcp bw in 2.6, Larry McVoy, (Mon Oct 1, 10:20 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 1:14 pm)

Re: tcp bw in 2.6, Bill Fink, (Wed Oct 3, 3:19 am)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 1:20 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 2:01 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 2:40 pm)

Re: tcp bw in 2.6, Rick Jones, (Tue Oct 2, 3:47 pm)

Re: tcp bw in 2.6, David Miller, (Tue Oct 2, 5:32 pm)

Re: tcp bw in 2.6, John Heffner, (Tue Oct 2, 11:06 am)

Re: tcp bw in 2.6, David Miller, (Mon Oct 1, 11:50 pm)

Re: tcp bw in 2.6, Larry McVoy, (Tue Oct 2, 12:23 am)


linux-kernel:
Andy Whitcroft	Re: 2.6.23-rc6-mm1
Greg KH	[GIT PATCH] driver core patches against 2.6.24
James Bottomley	Re: Integration of SCST in the mainstream Linux kernel
Alan	Re: [RFC] Heads up on sys_fallocate()
git:

linux-netdev:
Natalie Protasevich	[BUG] New Kernel Bugs
Gerrit Renker	[PATCH 0/37] dccp: Feature negotiation - last call for comments
Jarek Poplawski	[PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().
Winkler, Tomas	RE: iwlwifi: fix build bug in "iwlwifi: fix LED stall"
openbsd-misc: