Messages in this thread | | | Date | Wed, 27 Aug 2003 14:03:22 +0200 (CEST) | From | devik <> | Subject | 2.4.21 on SMP has extra slow context switch |
| |
Hello,
I upgraded one SMP box (Soyo MB, 2x PII/350, 500MB) from 2.4.8 (really) to 2.4.21 last week. Users start to complaint that it is slow. I run lmbench's context switch measurer and it's result is: "size=0k ovr=5.41 2 169.26 3 111.28 4 83.99
While on very similar UP system (the same CPU & kernel) it is: "size=0k ovr=3.50 2 1.80 3 2.08 4 2.89
Have someone even idea what is going on ? The systems seems to be fairly stable but slooow. I plan to reboot with single CPU at evening and/or upgrade to .22, but the numbers above are weird.
thanks, ------------------------------- Martin Devera aka devik Linux kernel QoS/HTB maintainer http://luxik.cdi.cz/~devik/
- 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/
| |