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2025-12-30 - 11:26
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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 rack0slot7.osadl.org (updated Tue Dec 30, 2025 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21984069945244,406cyclictest3324228-21dd00:03:219
21984129944211,28cyclictest0-21swapper/519:58:4011
2198401994409,27cyclictest3617411-21thunderbird00:21:371
21984129943914,27cyclictest0-21swapper/522:40:5811
2198440994270,427cyclictest0-21swapper/1422:50:286
2198440994270,427cyclictest0-21swapper/1422:50:286
2198440994270,426cyclictest0-21swapper/1423:59:376
2198403994260,425cyclictest2648056-21kworker/u64:5+events_unbound22:46:228
21984069942119,402cyclictest0-21swapper/319:59:459
219841699417414,2cyclictest1638636-21kworker/6:1+events19:54:5012
219842799414414,0cyclictest0-21swapper/1022:43:212
219842799414413,1cyclictest2372954-21kworker/10:0+i915-unordered20:03:492
2198440994130,9cyclictest0-21swapper/1400:19:266
2198412994127,405cyclictest0-21swapper/523:59:2111
2198443994110,410cyclictest0-21swapper/1520:04:497
2198412994117,402cyclictest0-21swapper/520:13:4811
2198443994080,407cyclictest0-21swapper/1519:54:507
2198396994087,0cyclictest0-21swapper/020:01:460
219842799406405,1cyclictest2496729-21kworker/10:0+i915-unordered22:46:232
2198422994069,396cyclictest0-21swapper/822:42:2914
2198443994050,405cyclictest0-21swapper/1500:07:407
2198424994055,400cyclictest0-21swapper/920:10:1615
219841699405403,2cyclictest3302512-21kworker/6:1+events00:15:5112
2198427994040,401cyclictest3617411-21thunderbird00:07:142
21984229940412,392cyclictest0-21swapper/820:28:5314
2198406994040,403cyclictest0-21swapper/323:09:199
219843799403401,1cyclictest4969-21gnome-shell20:23:585
219840999403401,2cyclictest3364831-21kworker/4:2+events00:11:4710
219842299402400,2cyclictest3617494-21Renderer20:01:4614
219841899402400,2cyclictest2413093-21kworker/7:2+events20:04:4913
219840399402400,2cyclictest0-21swapper/222:44:468
2198443994010,401cyclictest0-21swapper/1520:23:457
2198443994010,400cyclictest0-21swapper/1522:47:217
219843499401400,1cyclictest1058-21systemd-journal20:12:204
219840399401400,1cyclictest0-21swapper/220:03:498
219840399401399,2cyclictest1656129-21kworker/2:1+events20:06:438
219843799400397,3cyclictest8806-21Renderer00:05:185
2198443993990,398cyclictest0-21swapper/1520:08:347
2198443993990,398cyclictest0-21swapper/1519:57:227
2198443993980,397cyclictest0-21swapper/1500:13:487
219841899398396,1cyclictest268-21hwrng19:54:5013
2198443993970,397cyclictest0-21swapper/1500:16:317
2198443993970,396cyclictest0-21swapper/1520:14:507
219841899397395,2cyclictest2453692-21kworker/7:1+events00:07:4013
219840999397396,1cyclictest0-21swapper/422:37:3110
219840399397395,2cyclictest2475721-21kworker/2:0+events20:31:538
219840399397394,2cyclictest3042345-21kworker/2:0+events00:08:458
219840399396394,2cyclictest2412894-21kworker/2:2+events20:23:238
219840399396393,2cyclictest3042345-21kworker/2:0+events00:22:388
219840199396392,3cyclictest3617494-21Renderer20:09:141
219841699394393,1cyclictest3617494-21Renderer20:16:1712
219843799393393,0cyclictest0-21swapper/1320:27:505
219843799393392,1cyclictest0-21swapper/1319:53:225
219842799393391,2cyclictest85450irq/166-nvme1q300:10:222
219840399393392,1cyclictest0-21swapper/220:11:478
219842799392389,3cyclictest4145143-21neo4j.ServerTra20:30:252
219841899392390,2cyclictest2453692-21kworker/7:1+events20:23:4513
219841899391389,2cyclictest3020269-21kworker/7:0+events22:45:4513
219841899389387,2cyclictest3324451-21kworker/7:2+events00:16:3113
219841899389387,2cyclictest2392599-21kworker/7:0+events20:08:3413
219841899389387,2cyclictest1753818-21kworker/7:1+events19:57:2213
219841899389386,2cyclictest3363872-21kworker/7:0+events00:13:4813
2198443993880,388cyclictest0-21swapper/1522:36:597
219841899388385,2cyclictest2413093-21kworker/7:2+events20:14:5013
219843299387386,1cyclictest4969-21gnome-shell00:00:583
219842499387383,2cyclictest3617494-21Renderer00:21:3715
219839699387384,3cyclictest0-21swapper/000:12:580
219843299385385,0cyclictest0-21swapper/1122:40:403
219839699383378,5cyclictest3093093-21Isolated12:10:190
219842799382380,2cyclictest0-21swapper/1020:06:432
219842499380378,2cyclictest0-21swapper/922:36:3715
219840399380379,1cyclictest0-21swapper/219:53:498
2198443993790,378cyclictest0-21swapper/1522:42:587
219841899379378,1cyclictest4969-21gnome-shell22:36:5813
219840199378378,0cyclictest0-21swapper/100:19:131
219843799377375,2cyclictest3617494-21Renderer22:46:445
219841699377372,4cyclictest3617494-21Renderer23:59:3812
219842799375374,1cyclictest0-21swapper/1020:23:232
219841699375373,2cyclictest2999180-21kworker/6:2+events22:50:2912
219841699375373,2cyclictest2999180-21kworker/6:2+events22:50:2812
219840199375373,2cyclictest0-21swapper/120:25:451
219844099374370,2cyclictest0-21swapper/1400:21:366
219842799374373,1cyclictest0-21swapper/1000:22:382
219842799374372,2cyclictest2372954-21kworker/10:0+events20:11:472
219840699374374,0cyclictest0-21swapper/320:18:219
219839699372369,3cyclictest0-21swapper/020:17:580
219841899370368,2cyclictest4969-21gnome-shell22:42:5813
219840699369360,6cyclictest0-21swapper/320:13:229
2198416993670,366cyclictest3617538-21WRRende~ckend#100:05:3412
219843299366364,2cyclictest3617494-21Renderer00:09:223
219840199365358,5cyclictest0-21swapper/120:13:221
219840399363362,1cyclictest0-21swapper/222:17:388
219842799361359,2cyclictest1542301-21kworker/10:2+events19:53:492
219840199355354,1cyclictest0-21swapper/122:41:341
219840399353352,1cyclictest3322290-21grep00:00:398
2198406993520,20cyclictest0-21swapper/319:52:479
219840199352350,2cyclictest4969-21gnome-shell23:58:581
2198443993510,350cyclictest0-21swapper/1520:17:357
219842499349347,2cyclictest0-21swapper/900:14:2315
219842299349347,2cyclictest4969-21gnome-shell00:12:5814
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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