Comments on Phoronix Benchmarking openSUSE 11.1
Phoronix has run some tests comparing the openSUSE 11.1 release candidate (RC1), Ubuntu 8.10, Fedora 10 and Mandriva 2009.0 on Intel Atom. We have looked at the results and they are not good for openSUSE 11.1. I’ve talked with a few engineers and want to present below our first analysis.
While the benchmarks were done on a specific hardware, they might be relevant for other hardware as well.
Note that the numbers I cite below are not benchmark numbers comparable to the one Phoronix measured, they are measured on totally different machines by different engineers and not all are done as real benchmarks. But they show some of the problems.
Disk I/O - Safe or Fast?
We have barriers enabled for the ext3 filesystem. This is needed for filesystem integrity but forces at certain points a flush of disk writeback caches to prevent data corruption.