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2025-09-18 - 07:09
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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 100 highest latencies:
System rack0slot5.osadl.org (updated Thu Sep 18, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3851237995276,520cyclictest142-21ksoftirqd/1321:10:505
3851237995276,520cyclictest142-21ksoftirqd/1321:10:505
38512059952722,29cyclictest0-21swapper/621:23:5012
38512059952114,44cyclictest0-21swapper/619:47:5012
385123399519518,1cyclictest0-21swapper/1221:25:504
385120599509507,2cyclictest3888950-21kworker/6:1+i915-unordered19:53:5012
38512059950824,0cyclictest0-21swapper/619:28:5012
385120199505504,0cyclictest3951411-21kworker/5:0+i915-unordered21:10:5011
385120199505504,0cyclictest3951411-21kworker/5:0+i915-unordered21:10:5011
385119799504502,2cyclictest3956906-21kworker/4:2+i915-unordered21:25:5010
385119799503502,1cyclictest0-21swapper/419:47:5010
385119799491491,0cyclictest0-21swapper/423:12:5010
38512059948522,462cyclictest0-21swapper/622:43:5012
385121299482482,0cyclictest3913576-21kworker/8:1+i915-unordered20:22:5014
385123999472470,1cyclictest77250irq/159-i91522:14:506
38512059947020,448cyclictest0-21swapper/620:05:1112
385123999469468,1cyclictest77250irq/159-i91521:00:506
385122299469468,1cyclictest0-21swapper/1021:00:502
385121699466460,5cyclictest1811-21snmpd22:20:4815
38512109946523,29cyclictest0-21swapper/723:29:5013
3851191994630,3cyclictest0-21swapper/222:27:038
385122299461460,1cyclictest0-21swapper/1023:04:502
38511829946116,30cyclictest0-21swapper/020:23:130
385123999460460,0cyclictest77250irq/159-i91523:12:506
385123999460460,0cyclictest77250irq/159-i91521:10:506
385123999460460,0cyclictest77250irq/159-i91521:10:506
3851191994590,458cyclictest0-21swapper/219:27:478
385123999458457,1cyclictest77250irq/159-i91523:23:506
38511829945612,30cyclictest0-21swapper/022:57:340
385123999455455,0cyclictest77250irq/159-i91521:22:506
385123999455448,3cyclictest77250irq/159-i91519:28:506
385123999452452,0cyclictest77250irq/159-i91523:00:506
385119399451450,1cyclictest0-21swapper/300:06:039
385122899450449,1cyclictest1811-21snmpd00:06:033
385124499449448,1cyclictest4018554-21kworker/15:0+i915-unordered22:43:507
38512399944911,437cyclictest0-21swapper/1420:19:506
3851201994480,447cyclictest0-21swapper/522:14:5011
385119199448446,2cyclictest4043014-21kworker/2:0+i915-unordered23:04:508
38512339944726,420cyclictest0-21swapper/1220:55:354
38512339944725,421cyclictest0-21swapper/1223:05:344
3851216994470,446cyclictest0-21swapper/922:14:5015
385121299447444,3cyclictest1811-21snmpd23:55:2314
385121299447444,3cyclictest1811-21snmpd23:55:2314
3851191994470,446cyclictest0-21swapper/223:07:148
38512339944625,420cyclictest0-21swapper/1220:44:144
38512339944526,418cyclictest0-21swapper/1222:02:124
38512169944523,421cyclictest0-21swapper/920:02:1215
38512059944522,422cyclictest0-21swapper/621:38:1412
38511919944524,420cyclictest0-21swapper/223:52:118
38511919944524,420cyclictest0-21swapper/223:52:118
38512339944423,420cyclictest0-21swapper/1222:24:124
38512339944422,421cyclictest0-21swapper/1221:49:354
38512059944423,418cyclictest0-21swapper/621:54:3512
38512059944422,420cyclictest0-21swapper/622:03:1312
38511869944425,419cyclictest0-21swapper/122:59:501
38512339944325,418cyclictest0-21swapper/1200:29:364
3851210994430,29cyclictest0-21swapper/721:31:4613
38512059944324,418cyclictest0-21swapper/623:40:5012
38512059944322,421cyclictest0-21swapper/623:13:3412
38512059944322,418cyclictest0-21swapper/620:57:3312
38512059944321,420cyclictest0-21swapper/619:59:1312
38512059944321,419cyclictest0-21swapper/620:55:1412
385123999442441,1cyclictest77250irq/159-i91519:47:506
38512339944222,419cyclictest0-21swapper/1200:04:134
38512339944221,420cyclictest0-21swapper/1200:19:114
38512169944223,418cyclictest0-21swapper/922:42:3415
38512059944222,418cyclictest0-21swapper/621:47:3412
38512059944221,419cyclictest0-21swapper/623:36:3312
38512059944221,419cyclictest0-21swapper/621:36:3512
38512059944220,419cyclictest0-21swapper/622:07:3312
38512059944220,419cyclictest0-21swapper/619:45:1212
385119399442440,2cyclictest4051594-21kworker/u64:3+events_unbound23:35:509
38511869944221,417cyclictest0-21swapper/122:35:501
38512339944119,421cyclictest0-21swapper/1223:24:134
38512059944123,0cyclictest0-21swapper/620:16:1412
38512059944121,418cyclictest0-21swapper/621:05:3712
38512059944121,418cyclictest0-21swapper/621:05:3712
38512059944120,421cyclictest0-21swapper/620:26:1412
38512059944120,419cyclictest0-21swapper/622:53:1312
385124499440438,2cyclictest0-21swapper/1523:55:237
385124499440438,2cyclictest0-21swapper/1523:55:237
385123799440437,2cyclictest3963886-21kworker/13:2+i915-unordered22:01:355
38512339944021,419cyclictest0-21swapper/1221:35:354
38512339944020,420cyclictest0-21swapper/1223:17:324
38512339944019,420cyclictest0-21swapper/1223:36:114
38512339944018,421cyclictest0-21swapper/1220:35:364
385120599440440,0cyclictest3913506-21kworker/6:1+i915-unordered20:33:5012
38512059944020,420cyclictest0-21swapper/600:12:3512
38512059944020,418cyclictest0-21swapper/623:26:3412
38512059944020,418cyclictest0-21swapper/600:30:3412
38512059944019,419cyclictest0-21swapper/622:35:1312
38512059944018,419cyclictest0-21swapper/622:13:1312
38512059944015,423cyclictest0-21swapper/622:41:1112
38511919944022,418cyclictest0-21swapper/221:12:508
38511919944018,421cyclictest0-21swapper/200:10:128
38512339943920,419cyclictest0-21swapper/1222:55:344
38512339943919,419cyclictest0-21swapper/1222:50:334
38512339943918,420cyclictest0-21swapper/1223:48:114
38512339943918,420cyclictest0-21swapper/1223:48:114
38512339943918,420cyclictest0-21swapper/1222:16:144
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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