[Vm-dev] Building Ubuntu x64 vm; did I drop a clang-er?

[stes@PANDORA.BE]

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Hi Tim,

I'm following the OpenSmalltalk VM efforts with interest and hopefully the
following contributes something.

On Linux systems that have 'prlimit' one can do:

$ prlimit --rtprio
RESOURCE DESCRIPTION            SOFT HARD UNITS
RTPRIO   max real-time priority    0    0 

$ sudo prlimit --rtprio=99 --pid=$$

Assuming that the user is in the sudoers file (see visudo) possibly the above,
results in the following change:

$ prlimit --rtprio
RESOURCE DESCRIPTION            SOFT HARD UNITS
RTPRIO   max real-time priority   99   99

My impression is that the pthread_setschedparam() issue has multiple solutions.

In the case of your Ubuntu system, what is the output of "prlimit --rtprio" ?

You can also just run "prlimit" without arguments to see the RTPRIO values.

The above is not necessarily an alternative to the squeak.conf file

  /etc/security/limits.d/squeak.conf

may be the "right" file for you to use, but perhaps you can troubleshoot with
'prlimit' why it's not working.

On my system (not Linux but using PAM) one of the possibilities is 

 /etc/security/policy.conf

so there exist variations out there on the /etc/security/limit.d directory.

Regards,
David Stes

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