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2026-03-10 - 03:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Phytec
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.

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 50 highest latencies:
System rackbslot5s.osadl.org (updated Tue Mar 10, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4038973994834,10cyclictest391ktimers/322:20:123
4038960994740,4cyclictest4044631-21munin-plugin-st19:25:010
4038968994536,6cyclictest4058055-21grep20:00:252
4038968994536,6cyclictest4058055-21grep20:00:252
4038960994435,6cyclictest4084490-21sendmail21:20:000
4038968994328,13cyclictest4121968-21kworker/u8:0+events_unbound23:45:132
4038965994330,8cyclictest4144103-21grep00:10:251
4038965994236,4cyclictest4128943-21kworker/u8:3+events_unbound23:32:581
4038968994130,7cyclictest4104729-21grep22:15:262
4038965994134,5cyclictest4042587-21kworker/u8:3+events_unbound19:37:091
4038965994132,6cyclictest4093009-21apt-get21:45:001
4038965994132,5cyclictest4113685-21sh22:45:011
4038973994024,11cyclictest391ktimers/321:40:113
4038968994030,6cyclictest4086185-21sh21:25:002
4038965994028,8cyclictest4135432-21grep23:45:241
4038965994027,5cyclictest4121968-21kworker/u8:0+events_unbound23:58:011
4038965994026,10cyclictest231ktimers/123:05:121
4038965993933,4cyclictest4058204-21kworker/u8:1+events_unbound20:02:141
4038965993933,4cyclictest4058204-21kworker/u8:1+events_unbound20:02:141
4038965993932,5cyclictest4105395-21kworker/u8:2+events_unbound22:32:521
4038960993931,5cyclictest4153101-21cron00:39:590
4038965993826,7cyclictest0-21swapper/122:10:261
4038965993826,7cyclictest0-21swapper/120:35:011
4038960993830,4cyclictest0-21swapper/020:50:000
4038960993827,7cyclictest4094468-21sed21:45:290
4038965993725,9cyclictest4056320-21grep19:55:261
4038965993725,8cyclictest4108146-21grep22:25:251
4038960993730,3cyclictest0-21swapper/021:25:010
4038973993626,7cyclictest4038951-21cyclictest00:15:013
4038973993624,9cyclictest438-21cron00:10:013
4038968993627,4cyclictest0-21swapper/219:30:162
4038965993628,4cyclictest0-21swapper/100:25:241
4038965993628,4cyclictest0-21swapper/100:25:241
4038965993627,4cyclictest0-21swapper/100:20:001
4038965993625,7cyclictest4126847-21grep23:20:251
403896599361,10cyclictest24-21ksoftirqd/123:40:121
4038973993527,4cyclictest0-21swapper/322:05:163
4038973993525,7cyclictest4128572-21grep23:25:243
4038973993525,6cyclictest4094915-21cron21:50:003
4038973993524,8cyclictest391ktimers/319:15:123
4038968993525,7cyclictest4133748-21grep23:40:252
4038965993528,5cyclictest4121968-21kworker/u8:0+events_unbound23:37:571
4038965993527,4cyclictest0-21swapper/100:20:241
4038965993527,4cyclictest0-21swapper/100:20:241
4038960993528,3cyclictest4108570-21kthreadd22:30:010
4038973993426,4cyclictest0-21swapper/300:35:143
4038973993423,7cyclictest0-21swapper/320:05:253
4038973993423,7cyclictest0-21swapper/320:05:253
4038968993424,7cyclictest4054586-21grep19:50:272
4038968993424,7cyclictest4054586-21grep19:50:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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