[lc-devel] Statistics: 0.21

[Rodrigo S. de C. <rc...@im...>]

Hi there,

I ran some tests to have some performance statistics out of our 0.21
version of Compressed Cache. The selected tests were: fillmem/mmap001
(from memtest), Linux Kernel compilation and Dbench.

Kernel compilation is very interesting since this is an CPU intensive
and Dbench an IO intensive application. Besides that, both are widely
used for VM tests and couldn't miss on our test list.

I tested many Compressed Cache sizes (4, 8, 16 and 24) and plotted
graphics for every test in order to help understanding the data. Also
the CPU usage data (except for dbench case) was plotted.

In Linux Kernel compilation and Dbench tests, we didn't have very good
results. At the bootom of each test page, I tried to write an analysis
of mine on the performance causes and possible code improvements. The
analysis are very similar, stating something I missed so far: the high
importance of buffer/page cache (there's no support for these caches
in Compressed Cache).

Comments are very welcome!

You can see the statistics at

http://linuxcompressed.sourceforge.net/statistics/

Best regards,
-- 
Rodrigo S. de Castro <rc...@im...>