23 Sep
2005
23 Sep
'05
3:59 p.m.
Thank you very much.
These are the very first times I try to use Linux for audio recording, and the
standard gentoo kernel still works fine for me; I'll surely try to follow
your advices when I have a little bit more experience with it.
Thanks again.
Lorenzo
Alle 21:40, venerdì 23 settembre 2005, Dubphil ha scritto:
Ok few month ago here is what I did :
I have downloaded on kernel.org website :
- the vanilla kernel 2.6.11 (sorry no gentoo kernel)
- the 2.6.12-rc3 patch
- the realtime-preempt-2.6.12-rc3-V0.7.46-02 patch (ingo molnar patch)
I have applied the patches in the same order I have downloaded them
then I have setup the symlink linux -> kernel-2.6.11
and I ran :
# genkernel --menuconfig all
then I configure my kernel like that :
CONFIG_PREEMPT_DESKTOP=y
CONFIG_PREEMPT=y
CONFIG_PREEMPT_SOFTIRQS=y
CONFIG_PREEMPT_HARDIRQS=y
CONFIG_PREEMPT_RCU=y
CONFIG_PREEMPT_BKL=y
CONFIG_DEBUG_PREEMPT=y
CONFIG_PREEMPT_TRACE=y
CONFIG_SECURITY=y
CONFIG_SECURITY_CAPABILITIES=m
*advice wellcome if wrong or silly parameters are set*
Then I have downloaded the Realtime lsm module on the jack website
and follow the INSTALL documentation (really clear)
You can tweek your softirqs and hardirqs parameters, put the realtime
module to be loaded at the startup and you should go at low low latencies
(tell us the result!)
Hope it will helps. For Gentoo issues please ask me out of the LAU list.
Now you should adapt this methodology to the more current kernel sources
(i.e. 2.6.13)
Regards
Philippe