Bug 1311 - Performance on high BDP networks
Summary: Performance on high BDP networks
Status: CLOSED FIXED
Alias: None
Product: Portable OpenSSH
Classification: Unclassified
Component: Build system (show other bugs)
Version: 4.6p1
Hardware: All All
: P2 normal
Assignee: Assigned to nobody
URL:
Keywords:
Depends on:
Blocks: V_4_7
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Reported: 2007-05-05 10:01 AEST by Iain Morgan
Modified: 2008-04-04 09:59 AEDT (History)
2 users (show)

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Description Iain Morgan 2007-05-05 10:01:49 AEST 
This bug is intended to raise the priority and formalize the
issues surrounding file transfer performance on high BDP networks.

The performance of file transfers over high BPD networks using OpenSSH
has been know to be an issue for several years now. One patch
that is known to address this issue is the HPN-SSH patch
(http://www.psc.edu/networking/projects/hpn-ssh)

We have been using another patch, proposed by Markus Freidl
(http://marc.theaimsgroup.com/?l=openssh-unix-dev&m=110961193801798&w=2)

It would be greatly appreciated if either a subset of the HPN patch or
Markus Freidl's patch, possibly with some of the scp-specific
improvements from the HPN patch could be incorporated into the
mainstream OpenSSH distribution in the near future.

Thank you
Comment 1 Darren Tucker 2007-06-13 00:05:27 AEST 
This change has just been committed and will be in 4.7.

   - markus@cvs.openbsd.org 2007/06/11 09:14:00
     [channels.h]
     increase default channel windows; ok djm

It's a variant of the patch proposed by Markus mentioned above.
Comment 2 Darren Tucker 2007-08-16 23:32:15 AEST 
Markus' patch will be in 4.7 so I'm closing this bug.  Thanks for the report.
Comment 3 Damien Miller 2008-04-04 09:59:34 AEDT 
Close resolved bugs after release.