Re: [patch] optimization: defer bio_vec deallocation

[Andrew Morton <akpm@osdl.org>]

"Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote:
>
> On Mon, Mar 28, 2005 at 06:38:23PM -0800, Chen, Kenneth W wrote:
>  > We have measured that the following patch give measurable performance gain
>  > for industry standard db benchmark.  Comments?
> 
>  Dave Jones wrote on Monday, March 28, 2005 7:00 PM
>  > If you can't publish results from that certain benchmark due its stupid
>  > restrictions, could you also try running an alternative benchmark that
>  > you can show results from ?
>  >
>  > These nebulous claims of 'measurable gains' could mean anything.
>  > I'm assuming you see a substantial increase in throughput, but
>  > how much is it worth in exchange for complicating the code?
> 
>  Are you asking for micro-benchmark result?

There are a number of test tools floating about.  reaim, orasim, osdb, others.

A number of them are fairly crufty and toy-like, but still more useful than
microbenchmarks, and they permit others to evaluate patches and to perform
further optimisation. 

It's in everyone's interest that we get away from a test which has such
dopey restrictions.