Re: [linux-audio-dev] Re: costs of IPC

[Steve Harris]

In ctx mp mode, do all the processes get run with a high priority
(SCHED_FIFO or whatever), or are they run as normal userland processes?
They look pretty normal in top:

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1461 root      15   0  105M 105M  7092 S     4.3 21.0  47:05 XFree86
23676 swh       15   0  1104 1104   840 R     2.7  0.2   0:06 top
29956 root      12   0   692  692   560 S     2.5  0.1   0:00 ctx.tmp
29960 root      12   0   692  692   560 S     1.9  0.1   0:00 ctx.tmp
29958 root      12   0   692  692   560 R     1.5  0.1   0:00 ctx.tmp
29955 root      13   0   692  692   560 S     1.3  0.1   0:00 ctx.tmp
29959 root      14   0   692  692   560 R     1.1  0.1   0:00 ctx.tmp
29929 root      14   0   576  576   520 S     0.9  0.1   0:00 ctx.tmp
29961 root      13   0   692  692   560 R     0.9  0.1   0:00 ctx.tmp
29962 root      12   0   692  692   564 S     0.9  0.1   0:00 ctx.tmp
29957 root      15   0   692  692   560 R     0.5  0.1   0:00 ctx.tmp
 1472 swh        9   0  3104 3104  2480 S     0.1  0.6   3:00 magicdev
 1501 swh        9   0  4280 4280  3464 S     0.1  0.8   0:13 deskguide_ap
    7 root      -1 -20     0    0     0 SW<   0.0  0.0   0:00 mdrecoveryd

Theres the "Scheduler set to Round Robin with priority 99..." message, but
I'm not sure if/how that applies to processes or just threads.

- Steve