Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 | From | Alan Cox <> | Date | Thu, 09 Sep 2004 23:11:39 +0100 |
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On Iau, 2004-09-09 at 23:45, William Lee Irwin III wrote: > Something odd is going on, in part because I get *blistering* IO speeds > running benchmarks like dbench, tiobench, et al on tmpfs with striped > swap. In fact, IO speeds markedly faster than any other filesystem I've > ever tried, by about 30MB/s (i.e. wirespeed, where others fall about > 37.5% short of it). Virtual alignment issues do hurt, but the core > allocation algorithm appears to be better than good, it's astounding.
Thats a very atypical load where you can expect to get long linear write outs. The seek v write numbers for a disk nowdays have more in common with a tape drive. Paging tends to be much much more random.
Alan
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