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2026-04-02 - 05:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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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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 highest latencies:
System rack4slot1s.osadl.org (updated Thu Apr 02, 2026 03:37:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11532690,4chrt0-21swapper/203:18:582
11532690,4chrt0-21swapper/203:18:582
11532690,4chrt0-21swapper/203:18:582
20519994640,4cyclictest0-21swapper/003:06:590
20519994334,7cyclictest0-21swapper/003:06:550
20519994334,7cyclictest0-21swapper/003:06:550
20519994334,7cyclictest0-21swapper/003:06:550
2051999433,34cyclictest142-21systemd-journal02:42:260
2051999433,34cyclictest142-21systemd-journal02:42:260
2052099414,27cyclictest15888-21kworker/u10:2+rpciod02:42:271
2052099414,27cyclictest15888-21kworker/u10:2+rpciod02:42:271
20520994138,2cyclictest0-21swapper/103:07:071
2052099382,30cyclictest601-21snmpd02:50:491
2052099382,30cyclictest601-21snmpd02:50:491
2051999373,25cyclictest749-21runrttasks02:49:110
2051999373,25cyclictest749-21runrttasks02:49:110
20527993319,7cyclictest247482sleep202:51:112
20527993319,7cyclictest247482sleep202:51:112
20520993227,3cyclictest0-21swapper/103:14:351
20519993227,3cyclictest0-21swapper/003:13:270
20520992923,3cyclictest0-21swapper/103:01:461
20520992923,3cyclictest0-21swapper/103:01:461
20520992923,3cyclictest0-21swapper/103:01:461
20519992821,5cyclictest32566-21irqstats03:16:580
20519992821,5cyclictest32566-21irqstats03:16:580
20519992821,5cyclictest32566-21irqstats03:16:580
20519992820,6cyclictest27984-21kernelversion03:01:560
20519992820,6cyclictest27984-21kernelversion03:01:560
20520992722,2cyclictest0-21swapper/103:16:561
20520992722,2cyclictest0-21swapper/103:16:561
20520992722,2cyclictest0-21swapper/103:16:561
20519992723,2cyclictest0-21swapper/003:36:460
20519992723,2cyclictest0-21swapper/003:36:460
2052899263,16cyclictest24567-21chrt02:48:503
2052899263,16cyclictest24567-21chrt02:48:503
20520992521,3cyclictest29150-21latency_hist03:06:451
20520992521,3cyclictest29150-21latency_hist03:06:451
20520992521,3cyclictest29150-21latency_hist03:06:451
20519992521,2cyclictest0-21swapper/002:52:020
20519992521,2cyclictest0-21swapper/002:52:020
20519992418,4cyclictest27694-21fschecks_time03:01:540
20520992318,3cyclictest25354-21gltestperf02:51:551
20520992318,3cyclictest25354-21gltestperf02:51:551
2052799221,14cyclictest29527-21taskset03:06:542
2052799221,14cyclictest29527-21taskset03:06:542
2052799221,14cyclictest29527-21taskset03:06:542
20520992218,2cyclictest0-21swapper/103:36:461
20520992218,2cyclictest0-21swapper/103:36:461
20520992114,4cyclictest0-21swapper/103:22:131
20520992114,4cyclictest0-21swapper/103:22:131
2052899201,11cyclictest31393-21chrt03:11:593
2052799202,13cyclictest238422sleep202:42:132
2052799202,13cyclictest238422sleep202:42:132
20519992014,4cyclictest0-21swapper/003:31:460
20519992014,4cyclictest0-21swapper/003:31:460
20519992012,6cyclictest29166-20Xorg03:22:140
20519992012,6cyclictest29166-20Xorg03:22:140
2052899192,15cyclictest30936-21taskset03:09:213
2052799198,8cyclictest27093-21chrt02:59:392
2052799198,8cyclictest27093-21chrt02:59:392
2052799198,8cyclictest27093-21chrt02:59:392
2052799185,10cyclictest30770-21chrt03:07:312
2052799178,7cyclictest3096-21chrt03:34:382
2052799178,7cyclictest3096-21chrt03:34:382
2052099170,15cyclictest2731-21ls03:31:481
2052099170,15cyclictest2731-21ls03:31:481
2052899163,9cyclictest0-21swapper/303:25:373
2052899163,9cyclictest0-21swapper/303:25:373
2052799167,6cyclictest2497-21chrt03:29:392
2052799167,6cyclictest2497-21chrt03:29:392
2052799166,7cyclictest31671-21chrt03:15:042
2052799165,6cyclictest26625-21chrt02:56:212
2052799165,6cyclictest26625-21chrt02:56:212
2052799163,9cyclictest0-21swapper/203:22:192
2052799163,9cyclictest0-21swapper/203:22:192
2052899151,10cyclictest27548-21taskset03:01:533
2052899151,10cyclictest27548-21taskset03:01:533
2052899151,10cyclictest27548-21taskset03:01:533
2052899148,4cyclictest325672sleep303:16:583
2052899148,4cyclictest325672sleep303:16:583
2052899148,4cyclictest325672sleep303:16:583
2052899143,8cyclictest29602-21chrt03:06:553
2052899143,8cyclictest29602-21chrt03:06:553
2052899143,8cyclictest29602-21chrt03:06:553
2052899138,3cyclictest263272chrt02:52:323
2052899138,3cyclictest263272chrt02:52:323
2052899138,3cyclictest23262chrt03:27:273
2052899138,3cyclictest23262chrt03:27:273
2052899131,9cyclictest23105-21chrt02:41:573
2052899131,9cyclictest23105-21chrt02:41:573
2052899121,8cyclictest2900-21chrt03:32:063
2052899121,8cyclictest2900-21chrt03:32:063
plot10:48:588
setyrange[0.8:*]5
setylabel"Numberoflatencysamples"6
setxrange[0:400]4
setxlabel"Latencyus-Maximumusplottedon2
settitle"Latencyrack4slot1s"0
setterminalpbmcolor1
setoutput"r4s1s.ppm"7
setlogscaley3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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