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Date: Fri, 23 Nov 2007 12:32:58 -0500
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
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Subject: Re: [ANNOUNCEMENT] Updated: [experimental] cygwin-1.5.25-1
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On Fri, Nov 23, 2007 at 05:04:38PM -0000, Thorsten Kampe wrote:
>* Christopher Faylor (Fri, 23 Nov 2007 11:25:50 -0500)
>> On Thu, Nov 22, 2007 at 06:05:49PM -0000, Thorsten Kampe wrote:
>> >* Corinna Vinschen (Thu, 22 Nov 2007 16:42:10 +0100)
>> >>            ==== CYGWIN THANKSGIVING EDITION ====
>> >> 
>> >> I've made the new version of the Cygwin DLL, 1.5.25-1, and associated
>> >> utilities available for testing.  Version 1.5.24-2 remains the current
>> >> version for now.
>> >> 
>> >> This is a bug fix release.  Important changes since 1.5.24-2:
>> >
>> >Unfortunately the changes that made rsync run about 2 - 6 times faster
>> >[1] (on a backup of about 100,000 files residing on a FAT32 volume) 
>> >didn't make it into the prelease.
>> >
>> >The first snapshot that exhibited the stunning increase was the 
>> >snapshot from 2007-08-02 and the last one was the snapshot from 2007-
>> >08-13.
>> >
>> >[1] http://thread.gmane.org/gmane.os.cygwin/91350/focus=91509
>> 
>> So, does this mean that the snapshot was faster and then it wasn't?
>
>Yes, all the snapshots between 2007-08-02 and 2007-08-13 were much 
>faster. You remarked "does rsync use pipes by any chance? If so, that 
>may be at least part of the reason since that code has been revamped."

Yes.  I read and recall my comments.  Since I didn't remove any of the
pipe code, if it is now slower, then I don't understand what caused the
slowdown.

cgf

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