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2.4.x, patches and latencies

DISCUSSION Jussi Laako 2 participants 4 messages Jan 13, 2002 – Jan 19, 2002

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Hi,

Finally I got the my system back to 2.4.12-ac3-ll level latencies and smoothness and it's in fact performing significantly better.

See http://www.pp.song.fi/~visitor/latencytest5/3x256.html for latency results. (Sound driver is OSS 3.9.5f)

Patches used against 2.4.17 are:

- Andre's IDE patch
- Rik's rmap-11b
- Ingo's O(1)-H6
- Andrew's full lowlatency
- My additions to lowlatency

Now I'm quite happy with this!

- Jussi Laako

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#1 lore raw
Quoted 3 lines · Roberto Nibali

Could you please post this as a unified diff against 2.4.17 on your webpage, so others can test it too?

OK, it's now available at:
http://www.pp.song.fi/~visitor/dlbins/2.4.17-jl7-ll.patch.bz2

- Jussi Laako

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#2 lore raw
In reply to Jussi Laako
Quoted 5 lines · Jussi Laako
Quoted 3 lines · Roberto Nibali

Could you please post this as a unified diff against 2.4.17 on your webpage, so others can test it too?

I made a web page for my kernel patch combinations. Aimed primarily for low latency use.

http://www.pp.song.fi/~visitor/linux/

Latest 2.4.17-jl11 contains:

- Andre's ide driver update
- Lionel's SiS ide driver update
- ALi ide fix
- Small AGP fix
- Updated VIA KT133/KT266 fix
- Rik's rmap-11c
- Ingo's sched-O1-J2

-jl11-mini also contains:

- mini-ll patch

-jl11-ll also contains:

- full lowlatency patch
- my DRM lowlatency patch

Best regards,

- Jussi Laako

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#3 lore raw
In reply to Jussi Laako
Quoted 14 lines · Jussi Laako

I made a web page for my kernel patch combinations. Aimed primarily for low latency use.

http://www.pp.song.fi/~visitor/linux/

Latest 2.4.17-jl11 contains:

- Andre's ide driver update
- Lionel's SiS ide driver update
- ALi ide fix
- Small AGP fix
- Updated VIA KT133/KT266 fix
- Rik's rmap-11c
- Ingo's sched-O1-J2

[SNIP]

Quoted 4 lines

-jl11-ll also contains:

- full lowlatency patch
- my DRM lowlatency patch

FWIW, I just built this and did a kernel compile+updatedb+xmms test. Normally (Red Hat's 2.4.7), xmms skips like mad under those circumstances, with this patch it didn't skip at all. And system "feel" is good.

Not scientific numbers, and maybe not all that useful given the huge number of variables in the patch, but I figured I'd throw it out here.

Thanks for putting this patch up, Jussi.

Sumner