14 Jun
2005
14 Jun
'05
9:27 a.m.
Hi,
i was wondering if anyone could give me a summary of how rtlimit works
[i myself still use the realtime lsm]. I'm in the process of moving my
old wiki stuff to a wordpress installation and have also created a page
about rtlimit, but it's still lacking content [i got jonathan's
announcement mails on set_rtlimit on it though].
I'm still missing the big picture: What exactly is rtlimit and how does
it work? Is it in the same vein as ulimit?
The page is here:
http://www.affenbande.org/~tapas/wordpress/?page_id=22
btw: this software doesn't have quite the ease of use as a wiki, but it
has a working user signup thingy, so people can leave comments, etc.
--
Palimm Palimm!
http://affenbande.org/~tapas/
14 Jun
14 Jun
1:18 p.m.
On Tue, 2005-06-14 at 13:27 +0200, Florian Schmidt wrote:
Hi,
i was wondering if anyone could give me a summary of how rtlimit works
[i myself still use the realtime lsm]. I'm in the process of moving my
old wiki stuff to a wordpress installation and have also created a page
about rtlimit, but it's still lacking content [i got jonathan's
announcement mails on set_rtlimit on it though].
I'm still missing the big picture: What exactly is rtlimit and how does
it work? Is it in the same vein as ulimit?
Yes this is exactly what it is. Previously you had rlimits (set by PAM
at login, or manually via ulimit) for max locked memory, max open files,
etc. Now there's a new one for max RT priority. It's even simpler than
realtime LSM IMHO because it doesn't introduce a new API.
Some buggy apps like Audacity seem to not be able to handle this,
because they try to create their own watchdog thread at RT priority 99.
If the rlimit is set to 90 they will succeed at creating the DSP threads
but fail to create the watchdog thread.
Lee
3:28 p.m.
On Tue, 14 Jun 2005 11:20:18 -0400
Lee Revell <rlrevell(a)joe-job.com> wrote:
Yes this is exactly what it is. Previously you had
rlimits (set by PAM
at login, or manually via ulimit) for max locked memory, max open files,
etc. Now there's a new one for max RT priority. It's even simpler than
realtime LSM IMHO because it doesn't introduce a new API.
Some buggy apps like Audacity seem to not be able to handle this,
because they try to create their own watchdog thread at RT priority 99.
If the rlimit is set to 90 they will succeed at creating the DSP threads
but fail to create the watchdog thread.
So basically it uses the exact same framework as the ulimit/rlimit stuff
does? Should we expect to see ulimit extended to this? Probably not, as
we have set_rtlimits now.
btw: do you have some pointers for docs about all this rlimit stufF? My
google searches seem to be terribly unsuccessful. And does any
distribution have an informative manpage for ulimit? The debian page
seems to only describe the -f option. All other options seem to be
passed from user to user in a tribal knowledge sort of way. And the
ulimit output when no options are given isn't very informative either..
Anyone reported this audacity bug to its author? Or should I?
Flo
--
Palimm Palimm!
http://affenbande.org/~tapas/
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2 comments
2 participants
participants (2)
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Florian Schmidt -
Lee Revell