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2026-05-22 - 11:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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.
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 100 highest latencies:
System rackcslot7s.osadl.org (updated Fri May 22, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1390991070,84rtkit-daemon0-21swapper/019:08:290
288687728343,31sleep30-21swapper/319:05:263
288647527444,21sleep20-21swapper/219:05:122
288784026747,14sleep10-21swapper/119:09:011
139099560,4rtkit-daemon1389-21rtkit-daemon00:31:090
139099520,4rtkit-daemon1389-21rtkit-daemon20:45:123
139099510,4rtkit-daemon1389-21rtkit-daemon20:15:113
139099480,3rtkit-daemon1389-21rtkit-daemon19:34:273
139099440,3rtkit-daemon1389-21rtkit-daemon23:21:403
139099420,3rtkit-daemon1389-21rtkit-daemon23:03:553
30044572400,3sleep13056-21PK-Backend00:35:131
288806199387,4cyclictest34-21ksoftirqd/200:00:012
29200952360,9sleep342-21ksoftirqd/320:40:003
2888057993311,11cyclictest26-21ksoftirqd/100:10:001
139099320,5rtkit-daemon1788643-21eadedCompositor20:08:293
139099320,4rtkit-daemon1788643-21eadedCompositor19:57:333
2888061993116,4cyclictest34-21ksoftirqd/221:55:012
2888061993010,10cyclictest34-21ksoftirqd/221:45:002
139099300,2rtkit-daemon0-21swapper/321:35:543
288806199295,3cyclictest331rcuc/200:15:032
2888061992924,4cyclictest34-21ksoftirqd/222:45:012
288806199291,5cyclictest2921960-21/usr/sbin/munin20:45:152
2888061992913,5cyclictest34-21ksoftirqd/223:30:012
288805799292,3cyclictest26-21ksoftirqd/123:30:011
288805499292,20cyclictest0-21swapper/020:15:130
288806199285,12cyclictest34-21ksoftirqd/223:40:012
2888061992814,5cyclictest34-21ksoftirqd/220:40:012
288806199280,3cyclictest2989253-21gpgconf23:55:012
288805799282,4cyclictest26-21ksoftirqd/121:45:001
2888063992718,4cyclictest42-21ksoftirqd/300:25:013
288806199274,2cyclictest141rcu_preempt22:00:012
2888061992716,4cyclictest34-21ksoftirqd/219:50:002
288805799275,10cyclictest26-21ksoftirqd/120:00:001
288805799272,7cyclictest26-21ksoftirqd/123:55:011
288805799272,10cyclictest26-21ksoftirqd/119:20:001
288805499278,8cyclictest13-21ksoftirqd/021:45:020
288805499272,23cyclictest2990939-40mandb00:00:010
288806399260,2cyclictest141rcu_preempt19:20:283
288806199266,10cyclictest34-21ksoftirqd/222:05:202
288805799266,9cyclictest26-21ksoftirqd/100:10:011
288805799266,9cyclictest26-21ksoftirqd/100:10:011
288805799263,8cyclictest26-21ksoftirqd/120:25:121
2888054992610,9cyclictest13-21ksoftirqd/019:55:010
288806399257,10cyclictest42-21ksoftirqd/319:50:173
288806199254,6cyclictest34-21ksoftirqd/219:14:592
288806199253,2cyclictest141rcu_preempt00:15:002
288806199253,2cyclictest141rcu_preempt00:15:002
2888061992513,10cyclictest2959655-21irqstats22:30:162
2888061992511,4cyclictest34-21ksoftirqd/222:39:082
288806199250,7cyclictest141rcu_preempt20:15:112
2888057992512,3cyclictest26-21ksoftirqd/122:45:241
288805799250,6cyclictest3056-21PK-Backend20:40:001
2888054992522,2cyclictest161rcuc/000:38:270
2888054992510,4cyclictest13-21ksoftirqd/019:20:000
288806199249,4cyclictest34-21ksoftirqd/200:39:322
288806199247,3cyclictest141rcu_preempt20:25:122
288806199242,2cyclictest141rcu_preempt23:00:012
2888061992413,8cyclictest1-21systemd23:50:002
2888061992411,4cyclictest34-21ksoftirqd/220:45:002
2888061992410,4cyclictest34-21ksoftirqd/221:39:082
2888061992410,3cyclictest34-21ksoftirqd/222:25:022
2888061992410,3cyclictest34-21ksoftirqd/200:25:212
288806199240,22cyclictest1389-21rtkit-daemon23:21:402
288805799247,4cyclictest26-21ksoftirqd/123:00:011
288805799245,7cyclictest26-21ksoftirqd/123:40:181
2888057992420,3cyclictest251rcuc/100:28:431
288805799241,3cyclictest26-21ksoftirqd/122:05:201
288805799240,7cyclictest26-21ksoftirqd/100:25:001
288805799240,6cyclictest3056-21PK-Backend19:35:001
288805799240,4cyclictest26-21ksoftirqd/119:55:021
288805499242,4cyclictest13-21ksoftirqd/021:20:000
29237172230,10sleep234-21ksoftirqd/220:50:102
288806399238,13cyclictest2961403-21kernelversion22:35:173
288806399231,1cyclictest141rcu_preempt21:35:003
2888063992310,3cyclictest42-21ksoftirqd/300:10:003
288806399230,12cyclictest2999498-21kworker/u8:000:25:013
288806199239,4cyclictest34-21ksoftirqd/221:15:212
288806199238,3cyclictest34-21ksoftirqd/222:10:202
288806199236,3cyclictest34-21ksoftirqd/222:45:152
288806199235,5cyclictest2984113-21tr23:40:122
288806199235,3cyclictest141rcu_preempt00:25:012
288806199235,2cyclictest141rcu_preempt19:20:012
288806199234,2cyclictest141rcu_preempt21:25:002
288806199233,16cyclictest2991961-21runrttasks00:00:202
288806199231,4cyclictest34-21ksoftirqd/222:00:192
2888061992311,4cyclictest34-21ksoftirqd/219:35:112
288805799234,7cyclictest26-21ksoftirqd/121:30:001
2888057992320,2cyclictest251rcuc/123:07:571
2888057992319,3cyclictest251rcuc/100:20:001
288805799231,7cyclictest26-21ksoftirqd/120:47:191
288805799231,3cyclictest26-21ksoftirqd/122:45:001
2888057992310,4cyclictest26-21ksoftirqd/121:35:471
288805799230,6cyclictest3056-21PK-Backend22:34:461
288805499239,3cyclictest141rcu_preempt22:20:000
288805499239,3cyclictest141rcu_preempt22:20:000
288805499239,2cyclictest141rcu_preempt21:00:210
288805499235,3cyclictest13-21ksoftirqd/021:52:550
288805499233,7cyclictest13-21ksoftirqd/022:45:000
288805499233,6cyclictest13-21ksoftirqd/023:10:140
288805499233,6cyclictest13-21ksoftirqd/000:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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