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Andrew Morton wrote: > Andreas Hartmann <andihartmann@freenet.de> wrote: >> >> I tested kernel 2.6.4. While compiling kdelibs and kdebase, I felt, that >> kernel 2.6 seems to be slower than 2.4.25. >> >> So I did some tests to compare the performance directly. Therefore I >> rebooted for everey test in init 2 (no X). >> >> I locally compiled 2.6.5rc2 3 times under 2.6.4 and under 2.4.25 on a >> reiserfs LVM partition, which resides onto a IDE HD (using DMA) and got >> the following result: >> >> In the middle, compiling under kernel 2.6.4 tooks 9.3% more real time than >> under 2.4.25. >> The user-processortime is about the same, but the system-processortime is >> under 2.6.4 32.9% higher than under 2.4.25. > > Try mounting your reiserfs filesystems with the `-o nolargeio=1' option. This didn't help. > > If that doesn't help, please run a comparative kernel profile. See > Documentation/basic_profiling.txt. I'll do this next. Regards, Andreas Hartmann - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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