Re: [LKP] [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression

Dave Chinner
2016-08-12T01:26:07Z

On Thu, Aug 11, 2016 at 11:16:12AM +1000, Dave Chinner wrote:
> On Wed, Aug 10, 2016 at 05:33:20PM -0700, Huang, Ying wrote:
> We need to know what is happening that is different - there's a good
> chance the mapping trace events will tell us. Huang, can you get
> a raw event trace from the test?
>
> I need to see these events:
>
> xfs_file*
> xfs_iomap*
> xfs_get_block*
>

lkp-folks, can I please get these traces run and sent to me? I don't
have the time or patience to try to get aim7 running on my machines
- the build is full of hard-coded paths and libraries that aren't
provided by modern distros (e.g. it requires a static libaio.a!) and
it fails at the configure stage complaining that:

configure: error: C compiler cannot create executables

Which is a complete load of BS.

Hence I can't make progress until I have some way of understanding
what the IO pattern is that is generating the profile being
measured. So far I'm unable to do that with any of the tools I been
trying, hence I need the traces to work out what I'm missing...

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com