Mail Archives: cygwin/2006/05/02/04:26:59
> -----Original Message-----
> From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf
> Of Steve Baldwin
> Sent: Tuesday, 2 May 2006 6:54 AM
> To: cygwin AT cygwin DOT com
> Subject: RE: scp timeout on dual-core processor
>
> > -----Original Message-----
> > From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf
> > Of Harig, Mark
> > Sent: Tuesday, 2 May 2006 5:20 AM
> > To: cygwin AT cygwin DOT com
> > Subject: scp timeout on dual-core processor
> >
> > The Cygwin version of the openssh utility program, 'scp', appears to
> > have a defect that prevents
> > it from copying files above a certain size, when 'scp' is running on
> > computers with Intel
> > dual-core processors.
> >
> > Here is the information that I have gathered so far:
> >
> > 1. ssh from the client machine (which has the dual-core processor)
> > connects without error, and
> > the connection is stable.
> >
> > 2. scp is able to copy small binary or text files from the ssh server to
> > the client computer
> > without any timeout errors. Examples:
> >
> > $ scp ssh_server:/bin/ls .
> > ls 100% 66KB 66.1KB/s
> > 00:00
> >
> > $ scp ssh_server:/bin/date .
> > date 100% 38KB 37.7KB/s
> > 00:00
> >
> > 3. scp is unable to copy larger binary files from the ssh server to the
> > client computer.
> > Examples:
> >
> > $ scp ssh_server:/usr/bin/gcc .
> > gcc 0% 0 0.0KB/s
> > --:-- ETA
> > Disconnecting: Timeout, server not responding.
> > lost connection
> >
> > $ scp -o ServerAliveCountMax=1500 -o ServerAliveInterval=20
> > ssh_server:/usr/bin/gcc .
> > gcc 73% 64KB 7.8KB/s -
> > stalled -
> > Disconnecting: Timeout, server not responding.
> > lost connection
> >
> > I repeated the above tests using Cygwin's previous version of openssh,
> > 4.3p2-2, the current
> > version of openssh, 4.3p2-3, and the experimental version of openssh,
> > 4.3p2-4.
> >
> > In the examples above, the string 'ssh_server' was replaced by the IP
> > address of the Linux server
> > that is running the ssh service. The Linux server is running
> > openssh-3.6.1p2.
> >
> > The Cygwin client scp was installed for the first time last week, with
> > the Cygwin setup.exe
> > defaults selected for a base installation. Other utility programs that
> > were installed using
> > 'setup.exe' are 'openssh/openssl', 'vim', and 'rxvt'. Cygwin is
> > installed on a computer
> > running Windows XP. I have installed the same version of
> > Cygwin/openssh/etc. on two more
> > computers with dual-core CPUs. Both additional computers have the same
> > problem.
> >
> > I have repeated the commands above without any errors on computers
> > running Windows 2000,
> > 2003, and XP. All computers are connected to the same network. None of
> > the computers on
> > which the above commands ran successfully are using dual-core CPUs.
> >
> > Using the standalone program 'WinSCP', all files listed above can be
> > copied from the server
> > to the client computer without any errors.
> >
> > Has this problem been addressed previously? Is it a known problem with
> > Windows XP running on
> > Intel dual-core processors? Or, does anyone know whether it is a
> > problem with Cygwin running on
> > Windows XP on dual-core processors?
> >
> > I have attached several files to provide more information:
> >
> > 1. The output from the command 'cygcheck -s -v -r' (i.e.,
> > cygcheck.txt)
> > 2. A successful copy command using 'scp' with the option '-vvv'.
> > 3. An unsuccessful copy command using 'scp' with the option '-vvv'.
> >
> > If you have any ideas about what might be causing this problem; any
> > ideas about how I can fix it,
> > work around it, or trouble-shoot it; or would like more information
> > about the environment that
> > could help diagnose it, please let me know.
>
> I have a (what appears to be) similar problem also with a dual core
> (Centrino Duo) machine. My problem manifests when I attempt to paste in
> an
> X window (i.e. click the middle mouse button). I immediately (100%
> reproducible) get "Disconnecting: Timeout, server not responding.", and my
> ssh session dies. I'm not sure that this is an X problem so haven't
> posted
> to the cygwin/x list, but if someone feels this is X-specific please feel
> free to move it over.
>
> As Mark has said, if I can do further diagnosis to help get to the root of
> the problem please let me know.
>
> Regards,
>
> Steve
OK, now I don't believe my problems are related to the CPU(s). I disabled
the 2nd core in the BIOS and I was still getting the problem. I think it is
more likely to be some nasty interaction with some piece of software on this
new machine.
Please ignore my previous post (at least until I do a bit more
investigation).
Steve
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
- Raw text -