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2026-08-08 - 13:08
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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 Sat Aug 08, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
329100599695299,395cyclictest0-21swapper/122:43:331
32910289957035,0cyclictest0-21swapper/722:33:3313
329105799548547,1cyclictest3464725-21kworker/14:2+i915-unordered22:44:336
329102399508506,2cyclictest0-21swapper/619:36:3312
329102399506504,2cyclictest0-21swapper/622:44:3312
329106199486485,0cyclictest3452448-21kworker/15:0+i915-unordered22:39:337
32910189947427,28cyclictest0-21swapper/423:07:5410
32910189947427,28cyclictest0-21swapper/423:07:5410
3291051994693,465cyclictest0-21swapper/1221:22:334
32910059946923,29cyclictest0-21swapper/123:01:171
32910059946923,29cyclictest0-21swapper/123:01:171
32910289946416,30cyclictest0-21swapper/722:41:5513
32910209946115,30cyclictest0-21swapper/522:47:2611
329104699460460,0cyclictest0-21swapper/1123:09:053
329104699460460,0cyclictest0-21swapper/1123:09:053
329101399459455,3cyclictest1818-21snmpd23:09:059
329101399459455,3cyclictest1818-21snmpd23:09:059
329105399455425,30cyclictest0-21swapper/1321:29:335
32910189945427,30cyclictest0-21swapper/422:22:5410
3291005994547,30cyclictest0-21swapper/123:12:201
329100199452393,30cyclictest0-21swapper/020:33:160
32910289945125,28cyclictest0-21swapper/721:12:5613
32910289945026,29cyclictest0-21swapper/722:27:5513
32910289944922,29cyclictest0-21swapper/720:16:5513
32910059944825,29cyclictest0-21swapper/122:52:541
32910289944724,28cyclictest0-21swapper/721:07:5513
32910289944721,30cyclictest0-21swapper/720:51:1713
32910619944624,30cyclictest0-21swapper/1522:24:337
329105399446444,1cyclictest3452773-21kworker/13:1+i915-unordered23:02:335
329105399446444,1cyclictest3452773-21kworker/13:1+i915-unordered23:02:335
32910289944621,29cyclictest0-21swapper/722:07:1613
32910289944621,29cyclictest0-21swapper/721:01:5513
32910289944621,28cyclictest0-21swapper/723:49:5413
32910289944620,29cyclictest0-21swapper/723:55:1613
32910189944620,30cyclictest0-21swapper/400:32:3310
32910209944521,29cyclictest0-21swapper/523:10:5411
32910189944524,418cyclictest0-21swapper/422:49:1710
32910059944520,29cyclictest0-21swapper/100:26:541
32910289944419,29cyclictest0-21swapper/720:14:5513
32910289944320,29cyclictest0-21swapper/720:29:5413
32910289944320,29cyclictest0-21swapper/720:29:5413
329106199442441,1cyclictest3460468-21kworker/15:1+i915-unordered22:33:337
329105399442440,2cyclictest3254389-21kworker/13:1+i915-unordered20:17:335
329100599442441,1cyclictest0-21swapper/120:32:331
32910019944119,29cyclictest0-21swapper/020:48:170
32910289943914,29cyclictest0-21swapper/723:22:1713
32910209943916,29cyclictest0-21swapper/523:37:5611
32910619943817,28cyclictest0-21swapper/1523:47:337
32910519943716,28cyclictest0-21swapper/1219:17:334
329102099437436,1cyclictest3360050-21kworker/5:5+i915-unordered21:29:3311
32910209943712,30cyclictest0-21swapper/521:19:5611
3291018994379,29cyclictest0-21swapper/400:00:5610
32910409943614,421cyclictest0-21swapper/1022:45:562
329102399436436,0cyclictest0-21swapper/600:25:3412
329102099436435,1cyclictest3360050-21kworker/5:5+i915-unordered20:51:3311
32910059943614,0cyclictest0-21swapper/122:35:551
32910519943442,391cyclictest0-21swapper/1219:13:334
329104699434432,2cyclictest3208984-21kworker/11:0+i915-unordered19:07:333
3291028994340,433cyclictest0-21swapper/723:44:3313
32910619943311,421cyclictest0-21swapper/1520:27:337
32910619943311,421cyclictest0-21swapper/1520:27:337
32910409943313,419cyclictest0-21swapper/1022:54:172
329103499433433,0cyclictest0-21swapper/922:51:3315
3291005994332,30cyclictest0-21swapper/120:41:551
32910579943210,421cyclictest0-21swapper/1420:04:176
32910519943236,395cyclictest0-21swapper/1223:44:334
32910519943136,394cyclictest0-21swapper/1222:03:334
3291028994319,29cyclictest0-21swapper/721:50:5413
32910099943112,30cyclictest0-21swapper/223:21:338
32910619943017,412cyclictest0-21swapper/1520:08:337
32910189943022,405cyclictest0-21swapper/423:44:1610
32910619942913,415cyclictest0-21swapper/1519:38:337
329102899429429,0cyclictest0-21swapper/722:39:3313
3291018994290,30cyclictest0-21swapper/423:11:5710
3291018994280,30cyclictest0-21swapper/422:36:5410
329101399428427,1cyclictest69750irq/159-i91519:07:339
3291005994282,29cyclictest0-21swapper/120:26:161
3291005994282,29cyclictest0-21swapper/120:26:161
329105399427426,1cyclictest0-21swapper/1320:51:335
32910189942726,400cyclictest0-21swapper/400:14:5510
3291018994270,30cyclictest0-21swapper/423:59:5610
3291018994270,30cyclictest0-21swapper/421:31:1910
3291018994270,30cyclictest0-21swapper/420:02:1810
3291018994270,29cyclictest0-21swapper/422:19:5510
3291018994270,29cyclictest0-21swapper/400:27:5510
3291005994273,29cyclictest0-21swapper/122:20:171
3291005994271,30cyclictest0-21swapper/122:21:171
3291005994270,424cyclictest0-21swapper/120:57:161
3291018994264,29cyclictest0-21swapper/419:10:5610
32910059942630,395cyclictest0-21swapper/119:51:551
32910059942627,398cyclictest0-21swapper/121:33:161
3291005994260,30cyclictest0-21swapper/100:06:181
32910189942526,398cyclictest0-21swapper/419:21:5510
32910189942526,397cyclictest0-21swapper/422:56:5410
32910059942527,397cyclictest0-21swapper/100:22:161
3291005994250,29cyclictest0-21swapper/122:03:151
3291005994250,28cyclictest0-21swapper/122:15:161
329100199425421,3cyclictest3463337-21kworker/u64:5+events_unbound23:23:330
329102099424394,30cyclictest0-21swapper/523:02:3311
329102099424394,30cyclictest0-21swapper/523:02:3311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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