Messages in this thread | | | Date | Thu, 29 Aug 2002 11:43:48 -0700 | From | Andrew Morton <> | Subject | Re: 2.5.32 IO performance issues |
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Badari Pulavarty wrote: > > Hi, > > I am having severe IO performance problems with 2.5.32 (2.5.31 works fine). > I was wondering what caused this. > > As you can see, IO rate went from > > 384MB/sec with 6% CPU utilization on 2.5.31 > to > 120MB/sec with 19% CPU utilization on 2.5.32 > > ... > 151712 default_idle 2370.5000 > 21622 __scsi_end_request 122.8523
block-highmem is bust for scsi. (aic7xxx at least). Does http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.32/2.5.32-mm2/broken-out/scsi_hack.patch fix it? - 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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