I see some benchmarks performed at boot time on my Xeon E5410 2.33GHz that shows ... [ 37.935702] raid6: sse2x1 3562 MB/s [ 38.003702] raid6: sse2x2 6422 MB/s [ 38.003702] raid6: using algorithm sse2x2 (6422 MB/s) This speed is higher that the DDR2 667 theoretical speed of 5333MBs/sec. So I expect the limiting factor will never be the CPU, so it would not make sense to use multi-core. Am I completely off? nicolae Learner Study wrote: > Hi Keld: > > Do we have raid5/6 numbers for linux on any multi-core CPU? Most of > the benchmarks I have seen on wiki show raid5 perf to be ~150MB/s with > single core CPUs. How does that scale with multiple cores? Something > like intel's jasper forest??? > > If available, can u pls point me to numbers with multi-core CPU? > > Thanks! > > On Wed, Mar 31, 2010 at 1:15 PM, Keld Simonsen <keld@xxxxxxxxxx> wrote: > >> On Wed, Mar 31, 2010 at 12:42:57PM -0700, Learner Study wrote: >> >>> Hi Linux Raid Experts: >>> >>> I was looking at following wiki on raid perf on linux: >>> >>> https://raid.wiki.kernel.org/index.php/Performance >>> >>> and notice that the performance numbers are with 2.6.12 kernel. >>> >>> Do we perf numbers for: >>> - latest kernel (something like 2.6.27 / 2.6.31) >>> - raid 5 and 6 >>> >>> Can someone please point me to appropriate link? >>> >> The link mentioned above has a number of other performance reports, for other levels of the kernel. >> Anyway you should be able to get comparable results for newer kernels, the kernel has not become >> slower since 2.6.12 on RAID. >> >> best regards >> Keld >> >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
