[erlang-questions] widefinder update

Caoyuan <>
Mon Oct 29 12:21:12 CET 2007


I think the system time is mostly the disk/io time.

On 10/29/07, Thomas Lindgren <> wrote:
>
> --- Steve Vinoski <> wrote:
>
> > On 10/28/07, Anders Nygren <>
> > wrote:
> > >
> > > On 10/28/07, Hynek Vychodil
> > <> wrote:
> > > > Hi Anders,
> > > > I rewrote your code a little. I removed all
> > remaining binary bindings
> > > > and it is noticeable faster again. Try
> > wf_pichi3.erl.
> > > >
> > >
> > > Hynek
> > > that was great, Your change brings my wfinder1_1 +
> > wfbm4_ets1_1
> > > down to
> > > real    0m1.118s
> > > user    0m1.640s
> > > sys     0m0.368s
> > > on my 1.66 GHz dual core laptop.
> >
> >
> > And on the 8-core 2.33GHz Intel Xeon Linux box with
> > 2 GB RAM, this version
> > is extremely fast:
> >
> > real 0m0.567s
> > user 0m2.249s
> > sys 0m0.956s
>
> Impressive. However, can someone explain why
>    sys > real?
> Is the kernel too running in parallel?
>
> Best,
> Thomas
>
>
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-- 
- Caoyuan



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