Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: cfq performance gap | Date | Wed, 13 Dec 2006 08:20:52 -0800 |
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Miquel van Smoorenburg wrote on Wednesday, December 13, 2006 1:57 AM > Chen, Kenneth W <kenneth.w.chen@intel.com> wrote: > >This rawio test plows through sequential I/O and modulo each small record > >over number of threads. So each thread appears to be non-contiguous within > >its own process context, overall request hitting the device are sequential. > >I can't see how any application does that kind of I/O pattern. > > A NNTP server that has many incoming connections, handled by > multiple threads, that stores the data in cylic buffers ?
Then whichever the thread that dumps the buffer content to the storage will do one large contiguous I/O. - 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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