Re: RE: A Linux TCP SACK Question

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From: John Heffner
Date: Tuesday, April 15, 2008 - 10:23 am

On Tue, Apr 15, 2008 at 10:08 AM, Ilpo Järvinen
<ilpo.jarvinen@helsinki.fi> wrote:

This is what X_OtherReductionsCM instruments, and that was the only
thing holding back cwnd.

I just looked at the source, and indeed it will be called on every ack
when we are in the disorder state.  Limiting cwnd to
packets_in_flight() + 3 here is going to prevent cwnd from growing
when the reordering is greater than 3.  Making max_burst at least
tp->reordering should help some, though I'm not sure it's the right
thing to do.

  -John
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Messages in current thread:
A Linux TCP SACK Question, Wenji Wu, (Thu Apr 3, 9:54 pm)
Re: A Linux TCP SACK Question, John Heffner, (Fri Apr 4, 9:27 am)
RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 10:49 am)
Re: A Linux TCP SACK Question, John Heffner, (Fri Apr 4, 11:07 am)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 1:00 pm)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 1:07 pm)
RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 2:15 pm)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 2:33 pm)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Fri Apr 4, 2:39 pm)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 2:40 pm)
RE: A Linux TCP SACK Question, Wenji Wu, (Fri Apr 4, 3:14 pm)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Sat Apr 5, 10:42 am)
Re: A Linux TCP SACK Question, Sangtae Ha, (Sat Apr 5, 2:17 pm)
Re: A Linux TCP SACK Question, Wenji Wu, (Sun Apr 6, 1:27 pm)
Re: A Linux TCP SACK Question, Sangtae Ha, (Sun Apr 6, 3:43 pm)
RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 7, 7:56 am)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Mon Apr 7, 11:36 pm)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 5:33 am)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 6:45 am)
Re: A Linux TCP SACK Question, John Heffner, (Tue Apr 8, 7:07 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 7:30 am)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 7:59 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 8, 8:27 am)
Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 8, 8:57 am)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 8, 10:26 am)
RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 9:10 am)
RE: A Linux TCP SACK Question, Ilpo Järvinen, (Mon Apr 14, 9:48 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 3:07 pm)
RE: RE: A Linux TCP SACK Question, Wenji Wu, (Mon Apr 14, 3:47 pm)
Re: RE: A Linux TCP SACK Question, John Heffner, (Mon Apr 14, 5:48 pm)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 1:23 am)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 1:25 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 8:45 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 9:39 am)
Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 10:01 am)
Re: RE: A Linux TCP SACK Question, Ilpo Järvinen, (Tue Apr 15, 10:08 am)
Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 10:23 am)
RE: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 10:55 am)
Re: RE: A Linux TCP SACK Question, Matt Mathis, (Tue Apr 15, 11:00 am)
Re: RE: A Linux TCP SACK Question, Wenji Wu, (Tue Apr 15, 11:01 am)
Re: RE: A Linux TCP SACK Question, John Heffner, (Tue Apr 15, 3:40 pm)
Re: A Linux TCP SACK Question, David Miller, (Wed Apr 16, 1:27 am)
Re: A Linux TCP SACK Question, Ilpo Järvinen, (Wed Apr 16, 2:21 am)
Re: A Linux TCP SACK Question, David Miller, (Wed Apr 16, 2:35 am)
Re: A Linux TCP SACK Question, John Heffner, (Wed Apr 16, 7:40 am)
RE: RE: A Linux TCP SACK Question, Wenji Wu, (Wed Apr 16, 7:46 am)
RE: A Linux TCP SACK Question, Wenji Wu, (Wed Apr 16, 7:50 am)
Re: A Linux TCP SACK Question, Ilpo Järvinen, (Wed Apr 16, 8:03 am)
Re: A Linux TCP SACK Question, David Miller, (Thu Apr 17, 11:52 pm)