Re: [Patch 0/2] blkiomon: I/O monitor based on blktrace data

["Alan D. Brunelle" <Alan.Brunelle@hp.com>]

Martin Peschke wrote:
> In order to analyse I/O performance problems which could be reported by
> customers we want to provide a little monitoring tool. Primarily, we
> would like to be able look at a history of request size and request
> latency histograms per device.
> 
> The D and C traces provided by blktrace are exactly what we need for
> that purpose. So, running blktrace with appropriate filters (-a option)
> makes this approach feasible.
> 
> Patch 1/2 allows users to get binary output from blkparse on stdout.
> 
> Patch 2/2 contains blkiomon, an I/O monitoring tool, which reads
> blkparse data from stdin and which periodically writes I/O statistics.
> 
> I would like to contribute this little tool to the blktrace source tree.
> I think it would complement blkparse and btt quite well.
> 
> Martin

Hi Martin -

Is there some reason why you don't just parse the textual output from
blkparse itself? [I believe that's what Chris Mason does w/ his
seekwatcher for example.]

Alan