![]() | |||||||||||||
Messages in this thread |
Hi, Can we have the program/script you used to make your measures ? Thanks. On 6/14/05, yangyi <yang.yi@bmrtech.com> wrote: > Hi, All > > I did a performance regression test for all the 2.6 kernel series on two > x86 platforms in last two weeks and found that some version kernels do > have noticeable performance regression, some performance indices have > about 20 to 30 percent regression, > even several indices have over 30 percent fall. > > For example, on Toshiba tecra8000 laptop: for 4-bytes packet, network > throughput of 2.6.11 is just about 57.5 percent of 2.6.0, for pipe > bandwidth, the value of 2.6.11 is just about 68 percent of that value of > 2.6.0, for mmap latency, the value of 2.6.11 is about 1.8 times as long > as 2.6.0. > > On supermicro-6012-p6, for 64-bytes small packet, network throughput of > 2.6.11 is about 66.72 percent of 2.6.0, for 0K-size 2 processes context > switch time, 2.6.11 is 31.8 percent bigger than 2.6.0, for pipe latency, > 2.6.10 is 35.85 percent bigger than 2.6.3. > > So, I think that it is very very necessary to find the problems and fix > them ASAP. > > The following articles give out all the test results, the article "2.6 > kernel series have noticeable performance regression, part 1" gives out > the test results on SuperMicro-6012-p6, the article "2.6 kernel series > have noticeable performance regression, part 2" gives out the test > results on Toshiba tecra8000 laptop. > > > - > 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/ > - 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/ | ||||||||||||
| Last update: 2005-06-14 10:49 [from the cache] ©2003-2008 | |||||||||||||