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2026-08-12 - 15:28
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, 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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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 rack0slot5.osadl.org (updated Wed Aug 12, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
2769085995550,27cyclictest0-21swapper/723:34:2613
276910399543542,1cyclictest2878293-21kworker/11:0+i915-unordered21:21:263
2769103995232,520cyclictest0-21swapper/1120:49:263
27691169952114,45cyclictest0-21swapper/1400:18:266
276911999519518,1cyclictest2986826-21kworker/15:2+i915-unordered23:34:267
2769116995105,44cyclictest0-21swapper/1421:22:266
276911999508507,1cyclictest0-21swapper/1523:12:267
276911999508507,1cyclictest0-21swapper/1523:12:267
276907999504474,30cyclictest0-21swapper/523:51:2611
27691129950117,483cyclictest0-21swapper/1322:56:265
276911999499497,2cyclictest0-21swapper/1523:03:267
27690749949780,416cyclictest0-21swapper/419:28:2610
27690829949624,58cyclictest0-21swapper/621:32:2612
27691169949232,459cyclictest0-21swapper/1420:56:266
276907999490487,2cyclictest2846141-21kworker/5:0+i915-unordered20:57:2611
27691169948727,460cyclictest0-21swapper/1422:11:266
27691169948321,461cyclictest0-21swapper/1423:12:266
27691169948321,461cyclictest0-21swapper/1423:12:266
276907199476476,0cyclictest2838049-21kworker/3:2+i915-unordered21:22:269
276910799474472,2cyclictest2856869-21kworker/12:1+i915-unordered20:56:264
27690609947250,421cyclictest2913499-21ntpq22:00:470
27691169947110,460cyclictest0-21swapper/1419:49:266
276907199469468,1cyclictest2850108-21kworker/3:0+i915-unordered20:49:269
27691169946713,452cyclictest0-21swapper/1422:58:266
276907999467467,0cyclictest2793944-21kworker/5:2+i915-unordered19:49:2611
2769074994670,54cyclictest0-21swapper/421:20:2110
27690609946548,416cyclictest2966962-21perf23:15:210
27690609946548,416cyclictest2966962-21perf23:15:210
276907999464463,1cyclictest0-21swapper/522:58:2611
27690609946216,29cyclictest0-21swapper/000:19:090
276911299460458,2cyclictest2987731-21kworker/13:1+i915-unordered23:51:265
27691129946021,30cyclictest0-21swapper/1323:57:255
2769116994594,454cyclictest0-21swapper/1423:03:266
2769116994590,458cyclictest0-21swapper/1420:49:266
27690749945812,30cyclictest0-21swapper/419:44:2610
276909399457455,2cyclictest2966842-21kworker/9:1+i915-unordered23:09:2615
276909399457455,2cyclictest2966842-21kworker/9:1+i915-unordered23:09:2615
27690829945715,30cyclictest0-21swapper/621:37:2612
27690719945717,30cyclictest0-21swapper/320:32:269
27690719945717,30cyclictest0-21swapper/320:32:269
276907999455455,0cyclictest2894373-21kworker/5:0+i915-unordered22:11:2611
2769097994545,28cyclictest0-21swapper/1021:24:482
276909399453449,3cyclictest2930417-21kworker/9:2+pm22:48:2215
276907199453453,0cyclictest0-21swapper/320:41:269
27691199945211,30cyclictest0-21swapper/1500:28:257
2769093994518,29cyclictest0-21swapper/923:41:2515
276908299450449,1cyclictest69750irq/159-i91500:18:2612
2769074994491,30cyclictest0-21swapper/422:57:0810
2769112994476,29cyclictest0-21swapper/1322:11:265
276907999447441,5cyclictest1818-21snmpd23:16:3811
276907999447441,5cyclictest1818-21snmpd23:16:3811
27690749944727,419cyclictest0-21swapper/423:37:0810
27690609944725,419cyclictest0-21swapper/022:35:490
27690859944625,420cyclictest0-21swapper/720:50:4813
276908299445444,1cyclictest69750irq/159-i91523:34:2612
276908299445444,1cyclictest69750irq/159-i91521:52:2612
27690749944526,418cyclictest0-21swapper/421:44:1010
27690649944525,419cyclictest0-21swapper/123:50:491
27691169944423,420cyclictest0-21swapper/1423:37:496
27691169944423,420cyclictest0-21swapper/1423:33:116
27691169944423,420cyclictest0-21swapper/1421:12:476
276908999444443,1cyclictest0-21swapper/820:32:2614
276908999444443,1cyclictest0-21swapper/820:32:2614
27690859944422,421cyclictest0-21swapper/700:17:1013
27690799944422,421cyclictest2849145-21ntpq20:40:4711
27691039944322,420cyclictest0-21swapper/1121:25:493
27690829944326,416cyclictest0-21swapper/619:53:2612
276911999442441,1cyclictest2970721-21kworker/15:1+pm23:16:387
276911999442441,1cyclictest2970721-21kworker/15:1+pm23:16:387
276911699442441,1cyclictest2850133-21kworker/14:0+i915-unordered21:08:266
27690719944225,29cyclictest0-21swapper/322:24:269
27690649944221,420cyclictest0-21swapper/122:05:481
27691169944120,420cyclictest0-21swapper/1422:16:476
27691079944120,419cyclictest0-21swapper/1200:16:494
2769071994410,30cyclictest0-21swapper/322:04:269
276906699441440,1cyclictest0-21swapper/219:39:268
27690649944126,415cyclictest0-21swapper/100:27:491
27690609944119,421cyclictest0-21swapper/020:05:490
27691169944021,418cyclictest0-21swapper/1420:29:096
27691169944021,418cyclictest0-21swapper/1420:29:096
27691169944019,420cyclictest0-21swapper/1421:02:096
27691169944018,420cyclictest0-21swapper/1420:12:496
27690859944019,420cyclictest0-21swapper/719:25:4813
276908299440440,0cyclictest69750irq/159-i91521:22:2612
27691169943917,421cyclictest0-21swapper/1422:21:486
276911299439409,30cyclictest0-21swapper/1320:57:265
27691079943919,418cyclictest0-21swapper/1221:56:084
27691039943918,420cyclictest0-21swapper/1120:42:493
27690669943919,419cyclictest0-21swapper/220:57:098
27690669943918,420cyclictest0-21swapper/222:58:118
27690609943919,419cyclictest0-21swapper/000:10:470
27691169943816,421cyclictest0-21swapper/1421:49:116
27691129943824,413cyclictest0-21swapper/1319:57:265
27690669943818,419cyclictest0-21swapper/222:03:488
27690669943818,419cyclictest0-21swapper/221:45:488
27690669943818,419cyclictest0-21swapper/220:24:478
27690609943823,29cyclictest0-21swapper/019:19:100
27691039943715,421cyclictest0-21swapper/1120:27:483
27691039943715,421cyclictest0-21swapper/1120:27:483
27690749943717,416cyclictest0-21swapper/421:30:2210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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