Messages in this thread | | | Date | Mon, 27 Feb 2006 20:10:47 +1100 | From | Nick Piggin <> | Subject | Re: [Patch 0/7] Per-task delay accounting |
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Shailabh Nagar wrote: > The following patches add accounting for the delays seen by tasks in > a) waiting for a CPU (while being runnable) > b) completion of synchronous block I/O initiated by the task > c) swapping in pages (i.e. capacity misses). > > Such delays provide feedback for a task's cpu priority, io priority and > rss limit values. Long delays, especially relative to other tasks, can > be a trigger for changing a task's cpu/io priorities and modifying its > rss usage (either directly through sys_getprlimit() that was proposed > earlier on lkml or by throttling cpu consumption or process calling > sys_setrlimit etc.) >
Can we get an idea about the actual userspace programs and algorithms that use this feedback? Links, performance numbers, etc.
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