Re: [Patch 0/6]: Cleanup and rbtree for ext3 reservations in2.6.9-rc1-mm4

[Ram Pai]

On 10 Sep 2004, Mingming Cao wrote:

> On Tue, 2004-09-07 at 06:02, Stephen Tweedie wrote:
> > The patches in the following set contain several cleanups for ext3
> > reservations, fix a reproducable SMP race, and turn the per-superblock
> > linear list of reservations into an rbtree for better scaling.
> 
> > These changes have been in rawhide for a couple of weeks, and have
> > been undergoing testing both within Red Hat and at IBM.  
> > 
> 
> We have run several tests on this set of the reservation changes. We
> compared the results w/o reservation, rbtree based reservation vs link
> list based reservation. 

I have some more results at 
http://eaglet.rain.com/ram/seekwrite/seekwrite.html

In summary reservation code performs better than non-reservation. 
There is no clear winner while comparing link-based reservation v/s rbtree 
reservation.

RP

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