Lines Matching +full:- +full:- +full:cpus

1 .TH cpuunclaimed 8  "2016-12-21" "USER COMMANDS"
3 cpuunclaimed \- Sample CPU run queues and calculate unclaimed idle CPU. Uses Linux eBPF/bcc.
6 [\-T] [\-j] [\-J] [interval [count]]
9 CPUs, yet queued threads waiting their turn. It reports the amount of idle
10 (yet unclaimed by waiting threads) CPU as a system-wide percentage.
13 .IP -
14 An application has been bound to some, but not all, CPUs, and has runnable
15 threads that cannot migrate to other CPUs due to this configuration.
16 .IP -
17 CPU affinity: an optimization that leaves threads on CPUs where the CPU
19 CPUs are idle. The wait period is tunale (see sysctl, kernel.sched*).
20 .IP -
30 .IP -
32 be a lag as a sample is delayed by higher-priority interrupts, but it is
34 is seen in practice). You can use -J to inspect sample offsets. Some
35 systems can power down CPUs when idle, and when they wake up again they
38 .IP -
39 All CPUs are online (see ncpu).
42 samples (-j), as well as using other tracing tools to instrument scheduler
50 Sample and calculate unclaimed idle CPUs, output every 1 second (default:
60 .B cpuunclaimed \-T 1
62 Raw dump of all samples (verbose), as comma-separated values:
64 .B cpuunclaimed \-j
68 CPU utilization as a system-wide percentage.
71 Percentage of CPU resources that were idle when work was queued on other CPUs,
72 as a system-wide percentage.
87 99 Hertz (on all CPUs), which has a fixed and low cost, rather than sampling
89 instrumenting millions of events per second). Sampled CPUs, run queue lengths,
102 Unstable - in development.