On Tue, Jun 29, 2010 at 06:11:05PM -0700, Aleksey Tsalolikhin wrote:
> Summary:  Two CentOS 5.4 servers, one deployed Dec 2009, the other
> April 2010.  mkfs.ext3 performance differs wildly.   e2fsprogs package
> version is identical but the mkfs.ext3 binaries are different (but
> identical in size).
> 
> I've already posted to the CentOS users mailing list... Any
> suggestions how else I could track this down?
> 
> Version numbers are identical but binaries different:
> 
> e2fsprogs RPM is e2fsprogs-1.39-23.el5 on both systems
> mkfs --version reports "util-linux 2.13-pre7" on both systems
> mkfs -V reports the same on both systems (mke2fs 1.3 (29-May-2006)
> Using EXT2FS Library version 1.39)
> file size on mkfs and mkfs.ext3 binaries is identical
> 
> However, checksum on these binaries differs across servers, and "cmp"
> reports files are different

Shot in the dark - maybe one system is running prelink, and the other is
not?  

http://en.wikipedia.org/wiki/Prelink

I don't really see how that would affect speeds other than the initial
load of the binary though.... so it doesn't really explain the 13 mkfs.

-jkl
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