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2025-01-18 - 13:08
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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 50 highest latencies:
System rack0slot4.osadl.org (updated Mon Jan 13, 2025 00:46:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30367299952736,489cyclictest0-21swapper/1121:50:583
30367119951794,421cyclictest3240367-21kworker/5:0+i915-unordered23:52:4311
30367119951290,420cyclictest3012188-21kworker/5:0+i915-unordered20:47:4111
30367119950076,422cyclictest3097722-21kworker/5:2+i915-unordered20:17:2111
303669799500470,30cyclictest0-21swapper/119:23:581
303671399497497,0cyclictest3133327-21kworker/6:0+i915-unordered22:43:4212
303672999495494,1cyclictest3174098-21kworker/11:0+events21:56:423
30367119949564,422cyclictest3240367-21kworker/5:0+i915-unordered00:03:4411
30367119949510,29cyclictest0-21swapper/523:58:4211
303670799487486,1cyclictest3114846-21kworker/4:2+events22:13:4310
30367119948225,456cyclictest0-21swapper/523:27:4211
303673299477477,0cyclictest0-21swapper/1222:13:424
303670399477476,1cyclictest0-21swapper/321:45:449
3036697994779,466cyclictest0-21swapper/121:18:211
303671799473472,1cyclictest3277689-21kworker/7:0+i915-unordered00:35:5813
30367119947321,451cyclictest0-21swapper/522:43:4211
303670399472471,1cyclictest3155960-21kworker/3:2+i915-unordered21:50:589
303670399472471,1cyclictest0-21swapper/321:55:589
303674299468466,2cyclictest3035992-21kworker/15:2+events19:10:557
30367119946729,438cyclictest69-21ksoftirqd/521:58:2111
303674299465465,0cyclictest3212218-21kworker/15:0+events23:02:217
3036717994658,58cyclictest3229391-21ntp_states23:15:2113
3036717994658,58cyclictest3229391-21ntp_states23:15:2113
303670399463462,1cyclictest0-21swapper/322:05:589
30367119946224,0cyclictest0-21swapper/521:00:4411
30367119945816,441cyclictest0-21swapper/522:13:4311
303671399456454,2cyclictest0-21swapper/619:47:2212
303673799455454,1cyclictest66550irq/151-i91520:47:205
303672999454397,29cyclictest0-21swapper/1123:13:593
303672999454397,29cyclictest0-21swapper/1123:13:593
303670199454453,1cyclictest3023291-21kworker/2:2+events20:52:558
303670199454453,1cyclictest3023291-21kworker/2:2+events20:52:558
303670399453451,2cyclictest0-21swapper/323:50:319
30367039945325,29cyclictest0-21swapper/321:39:209
30367039945324,29cyclictest0-21swapper/321:19:219
3036703994530,55cyclictest0-21swapper/321:23:199
303671799451450,1cyclictest0-21swapper/700:30:5413
30367179944922,28cyclictest0-21swapper/721:34:5513
3036711994497,441cyclictest0-21swapper/519:23:5911
30367039944526,29cyclictest0-21swapper/320:25:209
30367039944213,29cyclictest0-21swapper/323:49:419
30366979944216,426cyclictest0-21swapper/120:32:581
30367019944115,31cyclictest0-21swapper/223:12:598
30367019944115,31cyclictest0-21swapper/223:12:598
303670199440439,1cyclictest0-21swapper/223:42:588
303669799440440,0cyclictest2996423-21kworker/1:1+i915-unordered21:03:201
303674299439438,1cyclictest3276883-21kworker/15:1+events00:30:437
3036739994390,438cyclictest0-21swapper/1421:38:326
3036717994399,29cyclictest0-21swapper/721:10:2213
30367179943811,28cyclictest0-21swapper/719:11:2213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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