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2026-07-08 - 09:00
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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 Wed Jul 08, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19775869958821,44cyclictest0-21swapper/1422:58:316
19775769953893,444cyclictest2074948-21kworker/11:2+i915-unordered21:19:323
19775769952317,44cyclictest0-21swapper/1100:30:313
197753499517516,1cyclictest1959839-21kworker/1:1+i915-unordered19:22:321
197757999506504,1cyclictest2234419-21kworker/12:2+i915-unordered00:30:314
197756899501500,1cyclictest2164691-21kworker/10:0+i915-unordered22:57:312
19775459949316,59cyclictest0-21swapper/423:55:1710
19775769948320,462cyclictest0-21swapper/1121:24:323
197756399479479,0cyclictest0-21swapper/923:17:3115
197758699477476,1cyclictest0-21swapper/1423:07:316
197753999476474,2cyclictest0-21swapper/221:48:328
197756399474473,1cyclictest0-21swapper/920:09:3215
19775459947222,447cyclictest0-21swapper/420:53:1410
197754299472471,1cyclictest69750irq/159-i91519:20:329
197754299472471,1cyclictest69750irq/159-i91519:20:329
19775459947122,29cyclictest0-21swapper/422:21:1510
197753099471470,1cyclictest0-21swapper/020:42:320
19775309947125,30cyclictest0-21swapper/022:13:160
19775309947124,28cyclictest0-21swapper/022:17:160
197757999470469,1cyclictest2086389-21kworker/12:0+i915-unordered21:24:324
19775459947022,28cyclictest0-21swapper/421:53:1510
19775459947022,28cyclictest0-21swapper/421:53:1510
19775839946921,30cyclictest0-21swapper/1323:06:525
19775589946922,30cyclictest2121591-21sleep21:56:2713
19775589946922,30cyclictest2121591-21sleep21:56:2713
19775459946922,29cyclictest0-21swapper/400:27:5210
19775459946718,30cyclictest0-21swapper/422:23:5210
19775459946614,30cyclictest0-21swapper/421:51:1610
19775839946522,28cyclictest0-21swapper/1320:38:325
19775839946517,29cyclictest0-21swapper/1323:22:185
197754299465464,1cyclictest69750irq/159-i91522:35:319
19775839946416,30cyclictest0-21swapper/1320:54:525
19775839946318,29cyclictest0-21swapper/1323:57:165
19775839946315,30cyclictest0-21swapper/1320:18:165
19775639946324,29cyclictest0-21swapper/919:22:3215
19775349946322,28cyclictest0-21swapper/100:04:311
19775839946213,447cyclictest0-21swapper/1322:48:155
1977576994620,461cyclictest0-21swapper/1121:39:323
19775839946114,29cyclictest0-21swapper/1323:19:545
19775839946111,30cyclictest0-21swapper/1322:08:165
19775459946116,30cyclictest0-21swapper/419:53:3210
19775399946120,30cyclictest0-21swapper/223:37:318
19775839946013,29cyclictest0-21swapper/1320:35:165
19775839946013,29cyclictest0-21swapper/1320:09:165
19775839946012,29cyclictest0-21swapper/1319:33:155
19775839946011,29cyclictest0-21swapper/1300:21:545
19775839946011,28cyclictest0-21swapper/1319:43:535
19775839945914,29cyclictest0-21swapper/1323:44:165
197756399459458,1cyclictest0-21swapper/919:58:3215
19775869945812,445cyclictest0-21swapper/1422:06:276
19775869945812,445cyclictest0-21swapper/1422:06:276
19775839945812,29cyclictest0-21swapper/1319:41:155
197757699458457,1cyclictest0-21swapper/1119:20:323
197757699458457,1cyclictest0-21swapper/1119:20:323
197753999458457,1cyclictest1818-21snmpd21:29:078
19775309945815,30cyclictest0-21swapper/020:14:320
1977586994578,28cyclictest0-21swapper/1421:10:546
1977534994576,30cyclictest0-21swapper/120:39:541
19775309945717,29cyclictest0-21swapper/023:44:310
197757999456424,31cyclictest0-21swapper/1222:08:324
1977545994569,30cyclictest0-21swapper/422:15:3110
19775869945513,29cyclictest0-21swapper/1423:22:316
19775309945513,29cyclictest0-21swapper/000:06:170
197757699451450,1cyclictest0-21swapper/1122:35:313
1977545994513,446cyclictest0-21swapper/419:44:1410
19775459945024,30cyclictest0-21swapper/419:21:1710
19775459945024,30cyclictest0-21swapper/419:21:1710
197754299450450,0cyclictest69750irq/159-i91523:07:319
197754999447441,5cyclictest1818-21snmpd23:13:4311
1977583994460,29cyclictest0-21swapper/1320:22:545
197757699446444,1cyclictest2003984-21kworker/11:0+i915-unordered19:33:553
19775689944625,420cyclictest0-21swapper/1023:39:532
19775589944626,419cyclictest0-21swapper/720:57:1613
1977576994450,28cyclictest0-21swapper/1100:23:533
1977576994450,27cyclictest0-21swapper/1122:47:133
19775589944524,420cyclictest0-21swapper/723:28:5413
1977558994452,30cyclictest0-21swapper/722:45:3113
19775769944425,418cyclictest0-21swapper/1119:45:173
19775689944421,420cyclictest0-21swapper/1020:46:532
19775589944424,419cyclictest0-21swapper/721:35:1613
19775459944424,416cyclictest0-21swapper/420:26:1410
197759199443441,2cyclictest0-21swapper/1520:18:327
197758699443442,1cyclictest0-21swapper/1421:20:176
197757699443440,3cyclictest1976799-21kworker/u64:8+events_unbound19:52:323
1977576994430,24cyclictest0-21swapper/1123:00:153
19775459944324,416cyclictest0-21swapper/422:02:5310
19775459944324,416cyclictest0-21swapper/422:02:5310
1977545994430,28cyclictest0-21swapper/422:28:5410
197754299443442,1cyclictest69750irq/159-i91522:57:319
19775769944224,416cyclictest0-21swapper/1120:33:523
19775769944222,419cyclictest0-21swapper/1123:13:533
19775689944220,421cyclictest0-21swapper/1022:39:522
19775689944219,422cyclictest0-21swapper/1019:40:542
19775459944222,417cyclictest0-21swapper/422:32:1510
197754299442441,1cyclictest2208332-21kworker/3:2+i915-unordered23:31:169
197757699441440,1cyclictest0-21swapper/1119:22:323
19775689944119,421cyclictest0-21swapper/1022:33:552
197755899441438,2cyclictest2131848-21kworker/7:0+i915-unordered22:01:5313
197755899441438,2cyclictest2131848-21kworker/7:0+i915-unordered22:01:5313
19775589944120,420cyclictest0-21swapper/723:41:1613
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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