You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-04-24 - 07:24
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack1slot8.osadl.org (updated Wed Apr 24, 2024 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3070099456418,25cyclictest0-21swapper/119:10:061
3069999417336,52cyclictest0-21swapper/019:35:200
3069999417336,52cyclictest0-21swapper/019:35:200
3070099365282,49cyclictest0-21swapper/119:35:201
3070099365282,49cyclictest0-21swapper/119:35:201
3069999362287,66cyclictest0-21swapper/019:10:060
295542286262,16sleep00-21swapper/019:05:220
33962980,4sleep03394-21missed_timers19:25:150
33962980,4sleep03394-21missed_timers19:25:140
3070099977,73cyclictest0-21swapper/121:40:591
66262870,4sleep013-21rcu_preempt21:05:130
227799810,4rtkit-daemon32101-21ssh23:44:121
227799790,4rtkit-daemon2276-21rtkit-daemon19:55:280
227799790,4rtkit-daemon2276-21rtkit-daemon19:55:280
30700997811,52cyclictest0-21swapper/120:57:591
227799770,4rtkit-daemon2276-21rtkit-daemon22:25:511
227799770,4rtkit-daemon2276-21rtkit-daemon19:50:281
227799760,4rtkit-daemon2276-21rtkit-daemon21:11:341
30699997562,9cyclictest0-21swapper/023:17:590
227799750,8rtkit-daemon0-21swapper/019:49:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional