RE: A Linux TCP SACK Question

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From: Ilpo Järvinen <ilpo.jarvinen@...>

To: Wenji Wu <wenji@...>

Cc: 'John Heffner' <johnwheffner@...>, 'Netdev' <netdev@...>

Subject: RE: A Linux TCP SACK Question

Date: Saturday, April 5, 2008 - 1:42 pm

On Fri, 4 Apr 2008, Wenji Wu wrote:

quoted text> 
> >...Assuming it wasn't disabled already. If you find that there's 
> >significant difference, you could try also with SACK+basic FRTO (set 
> >the tcp_frto sysctl to 1).
> 
> No, still the same. I tried tcp_frto with 0, 1, 2. 
> 
> SACK On is worse than SACK off.

No easy solution then, we'll have to take a look on tcpdumps.

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Messages in current thread:

A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 12:54 am)

Re: A Linux TCP SACK Question, John Heffner, (Fri Apr 4, 12:27 pm)

RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 1:49 pm)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 4:00 pm)

RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 5:15 pm)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 5:33 pm)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 5:40 pm)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 5:39 pm)

RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 6:14 pm)

Re: A Linux TCP SACK Question, Sangtae Ha, (Sat Apr 5, 5:17 pm)

Re: A Linux TCP SACK Question, Wenji Wu, (Sun Apr 6, 4:27 pm)

Re: A Linux TCP SACK Question, Sangtae Ha, (Sun Apr 6, 6:43 pm)

RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 7, 10:56 am)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 2:36 am)

RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 12:10 pm)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Mon Apr 14, 12:48 pm)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 6:07 pm)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 4:23 am)

Re: A Linux TCP SACK Question, John Heffner, (Tue Apr 8, 10:07 am)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 8:33 am)

Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 8, 11:57 am)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 9:45 am)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 10:30 am)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 10:59 am)

RE: RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 6:47 pm)

Re: RE: A Linux TCP SACK Question, John Heffner, (Mon Apr 14, 8:48 pm)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 12:39 pm)

Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 1:01 pm)

RE: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 1:55 pm)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 1:08 pm)

Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 1:23 pm)

Re: RE: A Linux TCP SACK Question, Matt Mathis, (Tue Apr 15, 2:00 pm)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 11:45 am)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 4:25 am)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 2:01 pm)

Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 6:40 pm)

RE: RE: A Linux TCP SACK Question, Wenji Wu, (Wed Apr 16, 10:46 am)

Re: A Linux TCP SACK Question, David Miller, (Wed Apr 16, 4:27 am)

Re: A Linux TCP SACK Question, Ilpo Järvinen, (Wed Apr 16, 5:21 am)

Re: A Linux TCP SACK Question, John Heffner, (Wed Apr 16, 10:40 am)

Re: A Linux TCP SACK Question, Ilpo Järvinen, (Wed Apr 16, 11:03 am)

Re: A Linux TCP SACK Question, David Miller, (Wed Apr 16, 5:35 am)

RE: A Linux TCP SACK Question, Wenji Wu, (Wed Apr 16, 10:50 am)

Re: A Linux TCP SACK Question, David Miller, (Fri Apr 18, 2:52 am)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 11:27 am)

Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 1:26 pm)

RE: A Linux TCP SACK Question, Ilpo Järvinen, (Sat Apr 5, 1:42 pm)

Re: RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 4:07 pm)

Re: A Linux TCP SACK Question, John Heffner, (Fri Apr 4, 2:07 pm)


linux-kernel:
Karl Meyer	PROBLEM: 2.6.23-rc "NETDEV WATCHDOG: eth0: transmit timed out"
Greg Kroah-Hartman	[PATCH 040/196] kobject: add kobject_add_ng function
Steven Rostedt	[RFC PATCH v4] Unified trace buffer
Dave Airlie	[git pull] drm patches for 2.6.27 final
linux-netdev:
Krzysztof Halasa	Re: [PATCH v2] Re: WAN: new PPP code for generic HDLC
David Miller	Re: [PATCH] Expose netdevice dev_id through sysfs
Jay Cliburn	Re: atl1 64-bit => 32-bit DMA borkage (reproducible, bisected)
Evgeniy Polyakov	[resend take 2 0/4] Distributed storage.
git:
Andrew Morton	Untracked working tree files
Miklos Vajna	[rfc] git submodules howto
Ben Collins	Re: [kernel.org users] [RFD] On deprecating "git-foo" for builtins
Jon Smirl	! [rejected] master -> master (non-fast forward)
openbsd-misc:
rancor	How to copy/pipe console buffert to file?
Pieter Verberne	File collision while using pkg_add
Greg Thomas	Re: Is it possible to fix a stale NFS hadle without rebooting?
Didier Wiroth	win32-codecs, avi and amd64 question


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RE: A Linux TCP SACK Question

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