Re: [Lhms-devel] Re: [PATCH 0/5] Reducing fragmentation using zones

[Mel Gorman <mel@csn.ul.ie>]

On Fri, 20 Jan 2006, Yasunori Goto wrote:

> > What sort of tests would you suggest? The tests I have been running to
> > date are
> >
> > "kbuild + aim9" for regression testing
> >
> > "updatedb + 7 -j1 kernel compiles + highorder allocation" for seeing how
> > easy it was to reclaim contiguous blocks
>
> BTW, is "highorder allocation test" your original test code?
> If so, just my curious, I would like to see it too. ;-).
>

1. Download http://www.csn.ul.ie/~mel/projects/vmregress/vmregress-0.20.tar.gz
2. Extract it to /usr/src/vmregress (i.e. there should be a
   /usr/src/vmregress/bin directory)
3. Download linux-2.6.11.tar.gz to /usr/src
4. Make a directory /usr/src/bench-stresshighalloc-test
5. cd to /usr/src/vmregress and run 3. cd to the directory and run
   ./configure --with-linux=/path/to/running/kernel
   make

5. Run the test
   bench-stresshighalloc.sh -z -k 6 --oprofile

   -z Will test using high memory
   -k 6 will build 1 kernel + 6 additional ones
   By default, it will try and allocate 275 order-10 pages. Specify the
   number of pages with -c and the order with -s

The paths above are default paths. They can all be overridden with command
line parameters like -t to specify a different kernel to use and -b to
specify a different path to build all the kernels in.

By default, the results will be logged to a directory whose name is based
on the kernel being tested. For example, one result directory is
~/vmregressbench-2.6.16-rc1-mm1-clean/highalloc-heavy/log.txt

Comparisions between different runs can be analysed by using
diff-highalloc.sh. e.g.

diff-highalloc.sh vmregressbench-2.6.16-rc1-mm1-clean vmregressbench-2.6.16-rc1-mm1-mbuddy-v22

If you want to test just high-order allocations while some other workload
is running, use bench-plainhighalloc.sh. See --help for a list of
available options.

If you want to use bench-aim9.sh, download and build aim9 in /usr/src/aim9
and edit the s9workfile to specify the tests you are interested in. Use
diff-aim9.sh to compare different runs of aim9.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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