Re: [RFC] Scheduler issue 1, RT tasks ...

Dieter Nützel
2002-01-01T18:55:45Z

On Monday, 31. December 2001 14:56, george anzinger wrote:
> Dieter Nützel wrote:
> > On Sunday, 29. December 2001 21:00, you wrote:
> > >Dieter Nützel wrote:
> > > > I ask because my MP3/Ogg-Vorbis hiccup during dbench isn't solved
> > > > anyway. Running 2.4.17 + preempt + lock-break + 10_vm-21 (AA).
> > > > Some wisdom?
> > >
> > > Please test this elevator patch. I'll be putting it out more formally
> > > in a day or two. Much more testing is needed yet, but for me, the
> > > time to read a 16 megabyte file whilst running dbench 160 falls from
> > > three minutes thirty seconds to seven seconds. (This is a VM thing,
> > > not an elevator thing).
> >
> > Andrew or anybody else,
> >
> > can you please send me a copy directly?
> > The version I've extracted from the list is some what broken.
> > I am not on LKML 'cause it is to much traffic for such a poor little boy
> > like me...;-)
>
> Andrew,
>
> I think the problem is that the mailer(s) insert new lines. Is this
> right Dieter? It is certainly a problem for me.

Yes.

> Best to mail as an attachment.

Yes.

But I applied it by hand and got the best results I ever had!
GREAT work, Andrew!
This should be go in, soon.

2.4.17
preempt-kernel-rml-2.4.17-1.patch
lock-break-rml-2.4.17-2.patch
00_nanosleep-5
10_vm-21 (Andrea)
bootmem-2.4.17-pre6
elevator-fix (Andrew)
O-inode-attrs.patch (ReiserFS)
linux-2.4.17rc2-KLMN+exp_trunc+3fixes.patch (ReiserFS)

Happy New Year and best wishes!

-Dieter

BTW Below are my first results. More to come (analysis of latency).

2.4.17-preempt + 10_vm-21 + elevator
dbench/dbench> time ./dbench 32
32 clients started
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................+.................................................................+...................+.......+....................+.........................................................................................................+.........+....................+................+..................+.....+...................................................................................................................................................................................................................................................................+..............++...........+.+.+..++++.+++.+.+++.++++********************************
Throughput 49.7707 MB/sec (NB=62.2133 MB/sec 497.707 MBit/sec)
13.800u 51.810s 1:25.89 76.3% 0+0k 0+0io 939pf+0w

2.4.17-preempt + 10_vm-21 + elevator + MP3 playback
dbench/dbench> time ./dbench 32
32 clients started
..............................................................................................................................................................................................................................................................................................................................................+.................................++....+.+.+.......+.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................+......................++.....+..+++.++..++.++++.+....++++.+++++********************************
Throughput 48.6323 MB/sec (NB=60.7904 MB/sec 486.323 MBit/sec)
14.690u 52.920s 1:27.87 76.9% 0+0k 0+0io 939pf+0w