Re: [PATCH] backing dev unplugging

Jesse Barnes
2004-03-10T20:46:58Z

On Wed, Mar 10, 2004 at 09:20:25PM +0100, Jens Axboe wrote:
> It'll be hard to apply the patch against anything but -mm, since it
> builds (or at least will conflict with) other changes in there. I
> deliberately made a -mm version this time though I usually make -linus
> and adapt if necessary, for Andrew to get some testing on this.

I tried applying to a BK tree (that was fresh as of a couple of hours
ago), and ignored the dm related changes, and it seemed to work ok after
I fixed up rejects in direct-io.c and blkdev.h (which didn't seem hard,
unless I'm missing something):

10 qla2200 fc controllers, 64 cpus, 112 disks

stock BK tree: ~43945 I/Os per second
w/Jens' patch: ~47149 I/Os per second

Jesse