Messages in this thread | | | Date | Wed, 20 Mar 2002 14:02:41 -0800 | From | Mike Fedyk <> | Subject | Re: Putrid Elevator Behavior 2.4.18/19 |
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On Wed, Mar 20, 2002 at 12:04:55PM -0700, Jeff V. Merkey wrote: > > > > Jens/Linux, > > The elevator code is malfunctioning in 2.4.18/19-pre when we start > reaching the upward limits with multiple 3Ware adapters > running together. We started seeing the problem when we went to > 64 K aligned writes with sustained > 200 MB/S writes to > multiple 3Ware adapters. > > We have verified that the 3Ware adapters are not holding the request > off, but that one of the requests is getting severely starved and > does not get posted to the 3Ware adapters until thousands of IOs > have gone before it. >
This elevator starvation problem has been identified and a patch already merged into 2.4.19-pre2.
Can you verify the affects it produces for your workload? - 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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