Re: Question: why does dbench take so much longer to run on XFSthen ext2 file system

[Andi Kleen <ak@xxxxxxx>]

On Thu, Jan 17, 2002 at 10:27:50AM -0600, Steve Lord wrote:
> My leaning is towards a problem with your build of xfs, or the parameters
> used. You did not by any chance turn on the debug parameters in xfs did
> you? Having a CONFIG_XFS_DEBUG=y in your .config options will turn xfs into
> a dog with 2400 ASSERTS and a lot of other checking addded to the filesystem.

Assuming XFS is compiled in, not built as a module, just booting with 
profile=2, running the test and then afterwards running /usr/sbin/readprofile
with the right System.map should show very quickly where the CPU is wasted. 
(the simple profiler unfortunately cannot deal with modules) 

-Andi