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2025-11-15 - 09:34
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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 rack0slot7.osadl.org (updated Sat Nov 15, 2025 00:46:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31418139944514,28cyclictest0-21swapper/1500:27:287
3141774994425,26cyclictest0-21swapper/200:38:588
3141770994320,27cyclictest0-21swapper/100:35:361
31417959942620,403cyclictest84950irq/160-nvme0q200:20:5115
31417959942316,405cyclictest0-21swapper/900:25:5915
3141795994199,406cyclictest0-21swapper/900:39:2215
314180799417416,1cyclictest27950irq/127-ahci[0000:00:17.0]00:32:345
314177099411411,0cyclictest0-21swapper/100:32:131
3141799994092,404cyclictest0-21swapper/1000:32:552
314180799403400,2cyclictest85350irq/164-nvme0q600:26:215
314179399403400,3cyclictest101073-21kworker/8:2+events00:30:2314
314178999402401,1cyclictest163037-21kworker/7:1+events00:31:2313
314177699396394,2cyclictest0-21swapper/300:11:199
314177099396394,2cyclictest3904023-21kworker/1:2+events00:20:511
314176799395390,5cyclictest0-21swapper/000:23:540
314177099392391,1cyclictest122457-21kworker/1:0+events00:25:591
3141813993900,389cyclictest0-21swapper/1500:23:307
314178999389389,0cyclictest0-21swapper/700:24:5413
314177699389388,1cyclictest0-21swapper/300:37:299
314178999388387,1cyclictest0-21swapper/700:39:5413
314177099385384,1cyclictest0-21swapper/100:19:221
314177999380379,1cyclictest323654-21Xorg00:32:1210
314178999379378,1cyclictest4162338-21kworker/7:0+events00:28:5513
314177699379378,1cyclictest0-21swapper/300:18:239
314180099378375,3cyclictest390842-21Renderer00:11:193
314177699378378,0cyclictest0-21swapper/300:32:339
314176799376371,5cyclictest0-21swapper/000:30:230
314180099372369,3cyclictest390842-21Renderer00:37:283
314178499372371,1cyclictest0-21swapper/500:39:4011
314178999367367,0cyclictest0-21swapper/700:14:5413
314177999363363,0cyclictest0-21swapper/400:35:5910
314180099362359,2cyclictest123055-21kworker/u64:8+events_unbound00:32:343
314180099361359,2cyclictest121283-21kworker/11:1+events00:18:233
314176799357350,7cyclictest0-21swapper/000:38:580
31417999935417,336cyclictest0-21swapper/1000:12:462
3141813993530,353cyclictest0-21swapper/1500:15:287
3141813993530,352cyclictest0-21swapper/1500:11:437
314178699352348,2cyclictest0-21swapper/600:27:2812
314179399351350,1cyclictest3595701-21kworker/8:1+events00:13:4314
314179999350349,1cyclictest29450irq/128-xhci_hcd00:39:392
314179999348345,3cyclictest100963-21kworker/10:3+events00:16:562
314178499348347,1cyclictest0-21swapper/500:32:3411
314177499346345,1cyclictest101998-21kworker/2:1+events00:32:558
314177499343340,1cyclictest0-21swapper/200:27:298
314179599336334,2cyclictest0-21swapper/900:13:5815
3141813993350,334cyclictest0-21swapper/1500:31:227
314180599335332,1cyclictest0-21swapper/1200:27:284
314178499333330,3cyclictest119877-21kworker/5:2+events00:26:2111
314179999330328,2cyclictest0-21swapper/1000:21:582
314181099326326,0cyclictest0-21swapper/1400:20:226
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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