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2025-05-09 - 05:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Fri May 09, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227799930,8rtkit-daemon0-21swapper/316:51:123
227799930,8rtkit-daemon0-21swapper/316:51:123
25492997217,14cyclictest0-21swapper/321:06:063
2548899699,37cyclictest0-21swapper/016:55:580
25488996821,40cyclictest10640-21tune2fs21:55:500
25488996616,43cyclictest0-21swapper/017:30:270
25488996544,14cyclictest22433-21grep21:11:060
227799650,5rtkit-daemon2276-21rtkit-daemon17:00:573
25488996417,39cyclictest19670-21munin-node17:45:570
25488996416,39cyclictest16442-21chrt19:51:060
25488996414,43cyclictest0-21swapper/020:10:320
25488996413,44cyclictest0-21swapper/018:00:380
25488996322,35cyclictest20351-21grep22:15:490
25488996310,45cyclictest0-21swapper/019:35:590
25488996310,45cyclictest0-21swapper/019:35:590
98812624,50sleep30-21swapper/317:25:393
2548899629,35cyclictest0-21swapper/019:10:470
25488996211,44cyclictest0-21swapper/017:15:390
274422613,49sleep30-21swapper/320:15:533
274422613,49sleep30-21swapper/320:15:533
25488996118,37cyclictest17196-21taskset19:55:460
25488996115,29cyclictest0-21swapper/021:36:010
25488996014,27cyclictest12273-21munin-node22:00:500
25488996012,41cyclictest0-21swapper/020:26:070
25488996011,31cyclictest0-21swapper/020:05:320
2549299593,50cyclictest0-21swapper/320:01:013
2549099594,47cyclictest31162-21idleruntime21:30:491
25488995918,35cyclictest32061-21sed19:16:080
25488995918,34cyclictest18329-21sendmail18:50:360
25488995917,28cyclictest11232-21tail20:50:430
25488995915,18cyclictest0-21swapper/021:50:530
25488995914,38cyclictest0-21swapper/018:42:540
25488995914,27cyclictest25590-21munin-node19:06:070
227799590,4rtkit-daemon2276-21rtkit-daemon20:42:413
25488995817,26cyclictest17269-21munin-node17:41:040
25488995816,35cyclictest17129-21basename22:10:400
25488995813,37cyclictest0-21swapper/018:30:470
25488995813,29cyclictest0-21swapper/021:25:290
25488995812,40cyclictest0-21swapper/017:51:110
25488995812,39cyclictest0-21swapper/017:21:110
25488995812,31cyclictest0-21swapper/017:30:490
25488995812,31cyclictest0-21swapper/017:30:490
25488995812,30cyclictest23058-21munin-node21:15:470
227799580,4rtkit-daemon2276-21rtkit-daemon22:13:373
227799580,3rtkit-daemon2276-21rtkit-daemon19:26:212
83132572,17sleep20-21swapper/218:26:372
25492995741,10cyclictest28959-21gltestperf16:56:003
25492995738,12cyclictest13153-21cut19:45:543
25488995717,26cyclictest0-21swapper/016:50:520
25488995717,26cyclictest0-21swapper/016:50:520
25488995713,36cyclictest6922-21grep19:31:110
25488995713,26cyclictest30474-21munin-node17:00:530
25488995713,24cyclictest26475-21latency_hist20:15:330
25488995712,38cyclictest0-21swapper/019:26:020
25488995712,29cyclictest0-21swapper/022:05:470
2548899571,50cyclictest0-21swapper/021:01:000
2548899571,50cyclictest0-21swapper/021:01:000
133932572,47sleep30-21swapper/318:40:363
2549299568,41cyclictest0-21swapper/320:55:473
2549299565,27cyclictest11020-21munin-run18:35:353
2549199564,45cyclictest0-21swapper/219:55:332
2549199563,45cyclictest0-21swapper/221:30:462
2549099564,30cyclictest0-21swapper/119:15:461
25488995615,34cyclictest29989-21latency_hist21:30:290
25488995613,36cyclictest0-21swapper/021:05:570
227799560,5rtkit-daemon2276-21rtkit-daemon21:15:472
205682563,7sleep320645-21sed18:55:363
2549299555,30cyclictest22961-21munin-run19:00:353
2549299555,30cyclictest22961-21munin-run19:00:353
2549099554,29cyclictest0-21swapper/117:11:131
2549099554,27cyclictest0-21swapper/117:56:071
2548899558,31cyclictest0-21swapper/019:41:090
2548899552,44cyclictest0-21swapper/021:46:010
2548899552,44cyclictest0-21swapper/021:46:010
25488995514,34cyclictest28857-21latency_hist20:20:330
25488995514,34cyclictest28857-21latency_hist20:20:330
25488995514,23cyclictest0-21swapper/020:50:300
25488995513,37cyclictest0-21swapper/020:25:330
25488995513,37cyclictest0-21swapper/020:25:330
227799550,5rtkit-daemon2276-21rtkit-daemon19:06:522
227799550,5rtkit-daemon2276-21rtkit-daemon19:01:002
227799550,5rtkit-daemon2276-21rtkit-daemon17:06:493
2549299546,28cyclictest0-21swapper/322:00:483
25492995432,16cyclictest26140-21sed17:56:103
25492995421,13cyclictest0-21swapper/317:50:503
2549199543,44cyclictest0-21swapper/221:20:522
25490995425,12cyclictest0-21swapper/118:41:041
25490995422,14cyclictest0-21swapper/119:11:071
2548899547,31cyclictest0-21swapper/020:35:440
2548899545,26cyclictest0-21swapper/020:55:410
2548899544,43cyclictest0-21swapper/018:20:540
25488995430,18cyclictest1263-21runrttasks21:30:350
25488995414,33cyclictest0-21swapper/019:01:060
25488995412,26cyclictest292151munin-node18:06:130
25488995410,37cyclictest0-21swapper/017:16:360
227799540,5rtkit-daemon2276-21rtkit-daemon19:20:592
227799540,5rtkit-daemon2276-21rtkit-daemon19:10:522
227799540,5rtkit-daemon2276-21rtkit-daemon18:31:082
227799540,5rtkit-daemon2276-21rtkit-daemon18:15:542
227799540,5rtkit-daemon2276-21rtkit-daemon17:57:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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