Re: [PATCH] Seperate read and write statistics of in_flightrequests

From: Jens Axboe
Date: Mon Aug 24 2009 - 07:07:43 EST

On Mon, Aug 24 2009, Nikanth Karthikesan wrote:
> Currently, there is a single in_flight counter measuring the number of
> requests in the request_queue. But some monitoring tools would like to know
> how many read requests and write requests are in progress. Split the current
> in_flight counter into two seperate counters for read and write.
> This patch is based on a patch from Mark Landis <mark.landis@xxxxxxxxxxxx>

With fear of stating the obvious, this changes the output format of the
exported stat files. This can/will break existing tools.

Jens Axboe

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