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2025-06-17 - 02:11
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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 rack0slot5.osadl.org (updated Tue Jun 17, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62050599545544,1cyclictest685545-21kworker/14:1+i915-unordered20:30:496
62050599536535,1cyclictest745840-21kworker/14:0+i915-unordered21:53:496
62047399525524,1cyclictest0-21swapper/721:26:4913
62047399525524,1cyclictest0-21swapper/721:26:4913
62050799518516,2cyclictest713614-21kworker/15:0+i915-unordered21:26:497
62050799518516,2cyclictest713614-21kworker/15:0+i915-unordered21:26:497
6205059951019,490cyclictest0-21swapper/1423:40:496
620473995044,499cyclictest0-21swapper/723:32:4913
620468995003,496cyclictest0-21swapper/619:37:4912
62050799496494,2cyclictest830273-21kworker/15:1+i915-unordered23:32:497
6204549949514,476cyclictest798192-21sleep22:54:458
62047399480447,32cyclictest0-21swapper/719:17:4913
6204549947725,30cyclictest692218-21libvirt-ifstat20:35:128
62050799473471,2cyclictest358641-21kworker/15:4+i915-unordered19:17:497
62050799468466,2cyclictest838274-21kworker/15:2+i915-unordered23:41:497
6204549946516,444cyclictest781279-21find22:25:128
62044699459456,2cyclictest701482-21kworker/0:2+events21:12:110
62047999457455,2cyclictest817986-21kworker/9:1+i915-unordered23:17:4915
620507994560,455cyclictest0-21swapper/1523:36:017
620454994538,28cyclictest764836-21ntpq22:05:118
62044699453450,2cyclictest774041-21kworker/0:3+events00:30:340
62044699453450,2cyclictest774041-21kworker/0:3+events00:30:340
62050599452452,0cyclictest645200-21kworker/14:2+i915-unordered19:37:496
62044699452449,2cyclictest810101-21kworker/0:2+events00:14:340
620505994508,29cyclictest0-21swapper/1421:17:496
62047999449447,1cyclictest777748-21kworker/9:1+i915-unordered22:20:4915
6204879944826,421cyclictest0-21swapper/1021:48:492
62047999448446,1cyclictest789849-21kworker/9:1+i915-unordered22:47:4915
6204879944626,419cyclictest0-21swapper/1022:30:492
6204919944526,418cyclictest0-21swapper/1120:45:333
620505994447,29cyclictest0-21swapper/1421:11:496
620496994440,24cyclictest0-21swapper/1221:06:344
6204689944423,420cyclictest0-21swapper/619:57:1212
6204689944422,421cyclictest0-21swapper/619:53:3312
62047799443442,1cyclictest0-21swapper/821:12:1114
62047399443442,1cyclictest0-21swapper/723:41:4913
6204689944322,420cyclictest0-21swapper/622:08:3312
6204549944324,418cyclictest0-21swapper/221:55:108
62044699443441,2cyclictest0-21swapper/022:21:440
620496994420,441cyclictest0-21swapper/1223:52:334
620496994420,441cyclictest0-21swapper/1221:35:104
620496994420,441cyclictest0-21swapper/1221:35:104
620496994420,441cyclictest0-21swapper/1220:37:104
620496994420,441cyclictest0-21swapper/1220:07:334
620496994420,441cyclictest0-21swapper/1219:34:334
620496994420,441cyclictest0-21swapper/1200:00:334
62044999442441,1cyclictest77250irq/159-i91523:17:491
6204919944124,416cyclictest0-21swapper/1123:20:343
6204689944119,421cyclictest0-21swapper/620:06:1212
620496994400,0cyclictest0-21swapper/1222:01:104
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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