Jens, Andrew, I am not pursueing this patch set. I have convinced myself that blktrace is capable of being used as a an analysis tool for low level I/O performance, if invoced with appropriate settings. In our tests, we limited traces to Issue/Complete events, cut down on relay buffers, and redirected traces to a network connection instead of filling locally attached storage up. Cost is about 2 percent, as advertised. Thanks, Martin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] 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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