10-20% performance degradation

On Wed, May 5, 2010 at 10:38 AM, Andrew Gaydenko <a@gaydenko.com> wrote:

During last week or two there were some changes in trunk which resulted

- in 10-15% degradation in my project(s) build time, and
- in 15-20% worse in behcnmarking.

 

Am I alone here? I'm at r21803 now.

We have seen similar things and are trying to find the cause. How do you benchmark? What is your setup?

Thanks

 -- Martin
 

On Wednesday, May 05, 2010 13:00:49 martin odersky wrote:
> On Wed, May 5, 2010 at 10:38 AM, Andrew Gaydenko wrote:
> > During last week or two there were some changes in trunk which resulted
> >
> > - in 10-15% degradation in my project(s) build time, and
> > - in 15-20% worse in behcnmarking.
> >
> >
> >
> > Am I alone here? I'm at r21803 now.
> >
> > We have seen similar things and are trying to find the cause. How do you
>
> benchmark? What is your setup?

It's an http server ([1], own yet closed current trunk) stress-loaded with
ApacheBench [2]. In fact, the enironment is the same as one has helped to
discover [3].

IIRC, the were some message in one of Scala lists about performance recently.

[1] http://gaydenko.com/scala/tiscaf/httpd/
[2] http://httpd.apache.org/docs/2.2/programs/ab.html
[3] http://www.scala-lang.org/node/4447