harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiao-Feng Li" <xiaofeng...@gmail.com>
Subject Re: [drlvm][gc_gen] gc_gen is 2x slower in tests...
Date Wed, 16 May 2007 09:53:49 GMT
On 5/16/07, Alexey Varlamov <alexey.v.varlamov@gmail.com> wrote:
> I checked my perceived changes in pre-commit testing time after
> Harmony switched to gcv5, comparing with old gc_cc on the following
> test:
>
> > sh build.sh -DBUILD_CFG=<cfg>  -Dtest.mode=jet test -Dtest.vmargs="-XX:vm.dlls=<gc>"
> Some smoke tests (outofmemory.*, perf.SeveralThreads, etc)
> intermittently fail/hang on gc_gen, so I've run each configuration 2-3
> times. All machines are multicore (>= 2 CPUs) server boxes.
> Ant-reported build time records are listed below:
>
> avg time in sec, gc_cc / gc_gen
> --------------------------------------------
> Win32 release:    340 / 520
> Win32 debug:      620 / 1400
> Linux32 release:  300 /  1200
> Linux32 debug:    440 / 1000
> Linux64 debug:    550 / 1300
>
> Indeed the time for testing is increased at least twice with gc_gen!
>
> Taking into account that gc_gen demonstrated very decent scores on
> enterprise benchmarks, how to interpret these results? Heavy
> initialization or client-unfriendly default settings of GC or smth
> else?

It's interesting. It will be greatly appreciated if you could do some
initial investigations.

Thanks,
xiaofeng

> --
> Alexey
>


-- 
http://xiao-feng.blogspot.com

Mime
View raw message