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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | posix osiSpawnDetachedProcess inherits scheduling policy + priority |
| From: | Till Straumann <[email protected]> |
| To: | EPICS Techtalk <[email protected]> |
| Date: | Mon, 26 Nov 2012 16:56:32 -0600 |
The current implementation of posix/osiSpawnDetachedProcess() basically just forks and execs. The new process inherits the scheduling policy and priority of whoever called spawnDetachedProcess(). This means e.g., that a caRepeater spawned by a "real-time enabled" IOC application executes under SCHED_FIFO with priority 51. Not sure this is a good thing. IMO osiSpawnDetachedProcess() should be fixed so that the new process starts out with SCHED_OTHER. - Till