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Mail Archives: cygwin/2009/06/28/19:22:57

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Date: Sun, 28 Jun 2009 19:22:30 -0400
From: Jonathan <jonathan AT kc8onw DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: 1.7 ssh/rsync consuming all cpu on x64 Vista
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Another data point: I only see the high CPU usage when sending, 
receiving data runs about the expected speed and CPU usage.

On 6/28/2009 4:07 PM, Jonathan wrote:
> I have also tried the rsync transfer from safe mode which makes a BLODA
> issue highly unlikely and then from a clean 1.7 install after renaming
> my existing install folder. Rsync and ssh both max out a processor core
> each for the transfer and it still goes much slower than it should.
>
> Should I test a 1.5 install to see if it's a regression with 1.7 and 64
> bit Vista?
>
> On 6/26/2009 10:02 PM, Jonathan wrote:
>> I've noticed that most of the time when doing an rsync tranfser over ssh
>> from my laptop to my server both ssh and rsync will max out a processor
>> core each and the transfer rate, even on a gigabit LAN, is only about
>> 250KB/s.
>>
>> Other than the slow transfer rate and significant CPU usage rsync seems
>> to run correctly.
>>
>> I tried to browse the strace output from a partial run but I don't know
>> enough to see anything obviously wrong in the strace output.
>>
>> uname -a
>> CYGWIN_NT-6.0-WOW64 SAGER9262 1.7.0(0.210/5/3) 2009-06-18 12:51 i686
>> Cygwin

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