On 2008-07-18 13:31, Martin Peschke wrote:
> recent changes:
> - added man page
> - beautified human-readable output
> - fixed an x86 compile error caused by incomplete endianess handling
> - fixed some x86 __u64 vs. unsigned long compiler warnings
> - fixed checking of a command line argument
>
>
> blkiomon periodicaly generates per devive request size and request latency
> statistics from blktrace data. It provides histograms as well as data that
>
Does it also measure latency caused by the request queues being full?
(which happens around here):
blk-core.c:get_request:
/*
* The queue is full and the allocating
* process is not a "batcher", and not
* exempted by the IO scheduler
*/
goto out;
That would be very useful to trace some high latencies I am seeing, see
discussion here:
http://lkml.org/lkml/2008/7/12/104
Best regards,
--Edwin
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