2.4.x swim3 performance problem on PM4400 identified

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon Apr 14 20:02:40 EST 2003

On Mon, 2003-04-14 at 11:39, mikpe at csd.uu.se wrote:

> I finally got around to testing your updates to swim3.c. I haven't
> observed any problems with it, and it solved my slow-writes problem.
> Great work -- thanks.
> There are two compile warnings on unused variables 'swim3_buf' and
> 'max_wait_inactive' that your update introduces. Did you intend
> to use them or what?

I fixed those in the version I merged in my tree, Paul's updates to
swim3 are in 2.4.20-ben10.


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