Re: [PATCH] likely cleanup: revert unlikely in ll_back_merge_fn

[Pavel Machek]

On Tue 25-04-06 20:30:26, Jens Axboe wrote:
> On Tue, Apr 25 2006, Hua Zhong wrote:
> > With likely/unlikely profiling (see the recent patch dwalker@xxxxxxxxxx 
> > sent), on my not-so-busy-typical-development system it shows more than 
> > 80K misses and no hits. So I guess it makes sense to revert.
> > 
> > I don't know BIO code very well, but I hope this data is useful for the 
> > experts.
> 
> Well you'd want to optimize for the busy case, right, no point in
> optimizing for a more idle system.

Careful here... for battery-powered systems you may want to optimize
for idle system...
							Pavel
-- 
Thanks, Sharp!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/