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2025-07-03 - 05:50
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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 Thu Jul 03, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247944099716715,1cyclictest0-21swapper/922:47:0415
247946499626311,314cyclictest0-21swapper/1423:38:416
247946499626311,314cyclictest0-21swapper/1423:38:416
24794599954220,521cyclictest0-21swapper/1322:26:185
247946899496496,0cyclictest2543070-21kworker/15:0+i915-unordered20:28:197
247946899492491,1cyclictest2559266-21kworker/15:0+i915-unordered20:50:197
247946899492491,1cyclictest2559266-21kworker/15:0+i915-unordered20:50:197
247946899477475,2cyclictest2483264-21kworker/15:1+i915-unordered19:21:197
247946899475475,0cyclictest0-21swapper/1520:40:197
24794249947221,29cyclictest0-21swapper/500:22:1811
24794469946822,30cyclictest0-21swapper/1023:00:182
247942299467467,0cyclictest0-21swapper/422:08:1810
24794569946619,29cyclictest0-21swapper/1222:11:184
24794409946519,444cyclictest0-21swapper/919:40:1815
247942899465465,0cyclictest0-21swapper/620:40:1912
247945199463460,3cyclictest1811-21snmpd20:59:523
247945199463460,3cyclictest1811-21snmpd20:59:523
247942899462461,1cyclictest0-21swapper/619:28:1912
24794249946211,30cyclictest0-21swapper/500:05:4011
247946499460459,1cyclictest77250irq/159-i91520:40:196
247942899460459,1cyclictest2530725-21kworker/6:2+i915-unordered20:25:1912
24794469945821,29cyclictest0-21swapper/1023:09:132
247943699458457,1cyclictest1811-21snmpd00:16:5414
24794329945714,30cyclictest0-21swapper/720:50:1813
24794329945714,30cyclictest0-21swapper/720:50:1813
247946499455455,0cyclictest77250irq/159-i91519:28:196
247946499454453,1cyclictest77250irq/159-i91520:25:196
247942299448448,0cyclictest0-21swapper/423:01:1810
247942899447446,1cyclictest0-21swapper/622:52:1812
247942899447444,3cyclictest1811-21snmpd21:24:3212
247946899446443,3cyclictest2554048-21kworker/u64:8+events_unbound21:20:187
2479413994460,445cyclictest0-21swapper/219:27:198
247940999446444,2cyclictest2657942-21kworker/1:1+i915-unordered22:52:181
2479468994450,29cyclictest0-21swapper/1522:49:137
24794599944525,419cyclictest0-21swapper/1322:22:405
247943299445441,3cyclictest1811-21snmpd21:11:1613
24794689944422,421cyclictest0-21swapper/1519:54:147
24794599944425,418cyclictest0-21swapper/1319:54:015
24794569944423,419cyclictest0-21swapper/1200:24:424
24794599944323,419cyclictest0-21swapper/1321:57:415
24794599944323,419cyclictest0-21swapper/1319:39:425
2479459994430,28cyclictest0-21swapper/1300:13:185
24794569944322,420cyclictest0-21swapper/1219:53:024
2479446994430,27cyclictest0-21swapper/1019:58:182
24794409944323,419cyclictest0-21swapper/920:33:1815
24794249944324,418cyclictest0-21swapper/522:13:1811
247946899442439,3cyclictest2645883-21kworker/u64:2+events_unbound22:53:187
24794599944224,417cyclictest0-21swapper/1300:21:405
24794599944223,418cyclictest0-21swapper/1300:25:395
24794599944223,418cyclictest0-21swapper/1300:00:045
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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