Re: [linux-audio-user] MOre realtime!

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To: A list for linux audio users <linux-audio-user@...>
Date: Tuesday, December 26, 2006 - 11:14 am

Ken Restivo wrote:

> > You don't need the realtime-lsm module any more. That has been superceded by

Well not really "superceded".

I think this is how it happened(anyone correct me if I'm wrong):

The realtime-lsm was more of a hack then anything, not really condoned by the mainline kernel folks because it was too much of a security risk. It was created to help us linux audio people be able to get decent latency from our machines, and dates back to the 2.4 series kernels.

The rtlimits is part of a revised pam(pluggable authentication modules?). It seems to sit better with most people because it gives very selected abilities to a targeted group. If I can remember correctly, I think it came out somewhere around 2.6.12 or slightly after? As an aside; the udev system came out around the same time. I find both of those systems to be so much easier to config.

Some distros still use the realtime-lsm even with the newer kernels mostly because they haven't gotten around to upgrading pam to support rtlimits. Some of the machines here use realtime-lsm, and others use rtlimits. I'd prefer to use the later, but oh well....


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Messages in current thread:
[linux-audio-user] MOre realtime!, J M Needham, (Wed Dec 20, 10:54 am)
Re: [linux-audio-user] MOre realtime!, James Stone, (Wed Dec 20, 11:36 am)
Re: [linux-audio-user] MOre realtime!, Ken Restivo, (Tue Dec 26, 10:13 am)
Re: [linux-audio-user] MOre realtime!, Tracey Hytry, (Tue Dec 26, 11:14 am)
Re: [linux-audio-user] MOre realtime!, Johannes Mario Ringheim, (Wed Dec 20, 5:34 pm)
Re: [linux-audio-user] MOre realtime!, Lars Luthman, (Wed Dec 20, 11:40 am)
Re: [linux-audio-user] MOre realtime!, J M Needham, (Wed Dec 20, 2:28 pm)
Re: [linux-audio-user] MOre realtime!, James Stone, (Wed Dec 20, 2:56 pm)
Re: [linux-audio-user] MOre realtime!, Lee Revell, (Wed Dec 20, 5:53 pm)