Re: [jazzplusplus-devel] limits.conf (was tex2rtf broken)

[D.B. M. <db...@ho...>]

Greets,

> Date: Sat, 8 Nov 2008 08:40:32 -0800
> From: pstieber@
> To: jazzplusplus-devel@
> Subject: Re: [jazzplusplus-devel] tex2rtf broken
> 
> DM = D.B. Moore
> DM> Just a question for both Pete & yourself
> DM> (seeing as you're both on fedora)...
> 
> I think Kevin is using Mandriva.
> 
> DM> could you look at your /etc/security/limits.conf
> DM> file and let me know if it contains any entries
> DM> for your user account?
> 
> My Fedora box...
> $ uname -a
> Linux maggie.toyon.corp 2.6.26.6-79.fc9.x86_64 #1 SMP Fri Oct 17 
> 14:20:33 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
> 
> has the following entries
> 
> ## Automatically appended by jack-audio-connection-kit
> @jackuser - rtprio 20
> @jackuser - memlock 4194304
> 
> ## Automatically appended by jack-audio-connection-kit
> @pulse-rt - rtprio 20
> @pulse-rt - nice -20
> 
> So anything running in the jackuser group limits the maximum real-time 
> priority to 20 and has a maximum locked-in-memory address space of 
> 4194304 KB.  Anything running as group pulse-rt has the same maximum 
> real-time priority limit and a maximum nice priority allowed to raise to 
> limit of -20.  The comments indicate this was automatically added by the 
> jack package.
> 
> 
> The Mandriva I'm running for Kevin...
> 
> $ uname -a
> Linux localhost 2.6.22.19-desktop-2mdv #1 SMP Mon May 5 20:55:05 EDT 
> 2008 i686 AMD Athlon(tm) XP 2800+ GNU/Linux
> 
> has the following
> 
> *               -       rtprio           0
> *               -       nice             0
> @audio          -       rtprio           50
> @audio          -       nice             -10
> 
> So the maximum nice priority allowed to raise to limit is 0 and the 
> maximum real-time priority limit is 0 for all users and the group audio 
> has different limits.
> 
> So no entries for my user account.
> 
> DM> (and what they read if existent) I've discovered there's a
> DM> way to tune user & user run task priorities from this
> DM> location, and am interested with what fedora policy here
> DM> is -- on a Deb install there are no user entries.
> 
> Same for Mandriva and Fedora.  If you use the bash shell, I believe you 
> can set some of this using ulimit in your .bash_profile.
>
<<snip>> 
>
> HTH,
> Pete
> 

Thanks for this lot....once I discovered that some vendors were setting
limits here, others not, and others in bash_profile, I realized there could
be a bit of a chasm between distros that may affect (particularly softsynth)
system performance....so this appears to be the case. This is good to know.

Regards,

Donald B



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