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f18m
2017-10-17 14:03:53 +02:00
parent 920288b5b7
commit e12f3e68c0
1 changed files with 8 additions and 2 deletions
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10
doc/zmq_ctx_set.txt
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@@ -64,9 +64,11 @@ ZMQ_THREAD_PRIORITY: Set scheduling priority for I/O threads
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The 'ZMQ_THREAD_PRIORITY' argument sets scheduling priority for
internal context's thread pool. This option is not available on windows.
When the scheduler policy is SCHED_OTHER on Linux, the system call "nice"
will be used to set a priority of -20 (max priority).
Supported values for this option depend on chosen scheduling policy.
On Linux, when the scheduler policy is SCHED_OTHER, SCHED_IDLE or SCHED_BATCH, the OS scheduler
will not use the thread priority but rather the thread "nice value"; in such cases
the system call "nice" will be used to set the nice value to -20 (max priority) instead of
adjusting the thread priority (which must be zero for those scheduling policies).
Details can be found in sched.h file, or at http://man7.org/linux/man-pages/man2/sched_setscheduler.2.html.
This option only applies before creating any sockets on the context.
@@ -78,6 +80,10 @@ ZMQ_THREAD_AFFINITY: Set CPU affinity for I/O threads
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The 'ZMQ_THREAD_AFFINITY' argument sets CPU affinity for the internal
context's thread pool. This option is only supported on Linux.
On Linux, each bit of the 'option_value' argument will represent an enabled
CPU in the corresponding cpu_set_t; for example the value 0x1 will set affinity
of all context's thread pool to CPU 0; the value 0x110 will set affinity
of all context's thread pool to CPU 1 and 2.
This option only applies before creating any sockets on the context.
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