To: cygwin@cygwin.com
From: mwoehlke <mwoehlke@tibco.com>
Subject:  Re: slow share = slow scripts?
Date:  Thu, 25 May 2006 10:43:18 -0500
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Larry Hall (Cygwin) wrote:
> mwoehlke wrote:
>> I'm trying to run some scripts off of a slow network share, and it 
>> takes *forever* in Cygwin (it's OK in Interix).
>>
>> Looking at an strace (attached) via 'sort -n' shows a LOT of time 
>> being spent in read(), apparently just after (caused by?) an fstat(), 
>> which means this feels like an inefficiency somewhere in Cygwin's 
>> POSIX emulation. Other than "RTFSC", does anyone have any ideas what I 
>> could do (workarounds, etc) so that I can run scripts in a reasonable 
>> amount of time? (Might this have anything to do with my share being 
>> non-writable?)
> 
> 
> Take a look at the -x, -E, and -X flags of 'mount'. Perhaps these will help
> you.

Thanks for the suggestion, but that was mostly counterproductive... :-)

-x -- 16s
-X -- 13s
-f -- 12s
-E -- 10s

...and I was getting 10s before, so either it isn't doing anything, it's 
making it works, or at best isn't helping enough to be useful.

Is there anything I can do about fstat()?

-- 
Matthew
...Ruthlessly beating Windows with a hammer until it looks like POSIX.


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