Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 8 Dec 2006 11:47:45 -0800 | From | Andrew Morton <> | Subject | Re: [patch 01/13] io-accounting: core statistics |
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On Fri, 08 Dec 2006 13:04:15 +0100 Eric Dumazet <dada1@cosmosbay.com> wrote:
> akpm@osdl.org a écrit : > > From: Andrew Morton <akpm@osdl.org> > > > > The present per-task IO accounting isn't very useful. It simply counts the > > number of bytes passed into read() and write(). So if a process reads 1MB > > from an already-cached file, it is accused of having performed 1MB of I/O, > > which is wrong. > > Any chance we can report some io accounting values in getresource()/wait4()... > too ?
That sounds logical.
> # /usr/bin/time find /usr -name 'foo' > 0.24user 0.22system 0:00.70elapsed 66%CPU (0avgtext+0avgdata 0maxresident)k > 0inputs+0outputs (0major+222minor)pagefaults 0swaps
But where? ri_inblock and ru_outblock seem to be count-of-operations, not number-of-bytes.
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