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From: Thorsten Kampe <thorsten AT thorstenkampe DOT de>
Subject:  Re: [ANNOUNCEMENT] Updated: [experimental] cygwin-1.5.25-1
Date:  Fri, 23 Nov 2007 17:04:38 -0000
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* 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."

Unfortunately I don't really understand Corinna's suggestion "Using 
gcc and cvs you should be able to find out which change after the 
2007-08-13 snapshot slowed rsync down again."

Does it mean that I should compile any committed change after August 
13th? That won't work because I never used cvs or gcc on my own.

> Or that the snapshot was exhibiting a problem with unclosed file handles.

There was an issue but it was fixed right away by Corinna[1]


Thorsten
http://article.gmane.org/gmane.os.cygwin/91507


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