Messages in this thread | | | Subject | [RFC] Multiprocessor Control Interfaces (v2.0) | From | Jason Baietto <> | Date | 12 Jun 2003 15:17:33 -0400 |
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Hello All,
Version 2.0 of Concurrent's multiprocessor control library (mpadvise) and user-level tool (run) are now available. A source tarball, README and ChangeLog can be found here:
http://www.ccur.com/realtime/oss
These are GPL'd clean-room implementations of similar tools that have been available in our proprietary *nix for quite some time, and so the interfaces have a fair amount of mileage under their belts. Note that the scope is somewhat wider than just MP.
Briefly, it works like this:
# run -b 0 foobar (runs foobar biased to cpu 0)
# run --negate --bias 0 foobar (runs foobar anywhere but cpu 0)
but it can combine MP and scheduler parameters easily too:
# run --bias 0-2,5 --policy rr --priority 50 autopilot
Here's the full help output. See the man pages in the tarball for details on using the mpadvise(3) library service.
# run --help Usage: run [OPTIONS] { COMMAND [ARGS] | PROCESS_SPECIFIER } Set scheduling parameters and CPU bias for a new process or a list of existing processes.
OPTIONS can be one or more of the following options:
-b, --bias=LIST Set the CPU bias to the LIST of CPUs; CPUs are numbered starting from 0 -s, --policy=POLICY Set the scheduling policy to POLICY (SCHED_OTHER, SCHED_RR or SCHED_FIFO) -P, --priority=LEVEL Set the scheduling priority to LEVEL; SCHED_FIFO and SCHED_RR range: 1 to 99 SCHED_OTHER: only priority 0 is valid -q, --quantum=QUANTUM Set the SCHED_RR quantum to QUANTUM; use --quantum=list for valid settings -N, --negate Negate the CPU bias list; all CPUs except those listed will be selected -f, --fork Fork COMMAND and return immediately -c, --copies=COUNT Run COUNT identical copies of COMMAND -i, --info Output process environment information -V, --version Output version information and exit -v, --verbose Output information before each action -h, --help Display this help and exit
PROCESS_SPECIFIER is exactly one of the following options:
-p, --pid=LIST Specify LIST of existing PIDs to modify -g, --group=LIST Specify LIST of process groups to modify; all existing processes in the groups will be modified -u, --user=LIST Specify LIST of users to modify; all existing processes owned by the users will be modified -n, --name=LIST Specify LIST of existing process names to modify
Multiple comma separated values can be specified for all LISTs and ranges are allowed where appropriate (e.g. "run -b 0,2-5 autopilot").
See the run(1) man page for more information.
Take care, Jason -- Jason Baietto jason.baietto@ccur.com
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