On Wed, 05 Dec 2007 21:15:30 +0100 Holger Wolf <[EMAIL PROTECTED]> wrote:
> We discovered performance degradation with dbench when using kernel > 2.6.23 compared to kernel 2.6.22. > > In our case we booted a Linux in a IBM System z9 LPAR with 256MB of > ram with 4 CPU's. This system uses a striped LV with 16 disks on a > Storage Server connected via 8 4GBit links. > A dbench was started on that system performing I/O operations on the > striped LV. dbench runs were performed with 1 to 62 processes. > Measurements with a 2.6.22 kernel were compared to measurements with > a 2.6.23 kernel. We saw a throughput degradation from 7.2 to 23.4 this is good news! dbench rewards unfair behavior... so higher dbench usually means a worse kernel ;) -- If you want to reach me at my work email, use [EMAIL PROTECTED] For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
