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2026-04-19 - 10:18
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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 Sun Apr 19, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119219995833,27cyclictest0-21swapper/1122:23:013
119219995833,27cyclictest0-21swapper/1122:23:013
11918499550548,2cyclictest276949-21kworker/3:2+i915-unordered22:23:019
11918499550548,2cyclictest276949-21kworker/3:2+i915-unordered22:23:019
11922499529527,2cyclictest373402-21kworker/12:2+i915-unordered00:31:014
11921299518515,2cyclictest301100-21kworker/10:0+i915-unordered23:02:012
1191849951817,500cyclictest0-21swapper/321:17:019
119173995147,29cyclictest0-21swapper/023:02:010
1192359951212,499cyclictest0-21swapper/1523:08:017
11922499498497,1cyclictest357506-21kworker/12:0+i915-unordered00:10:014
11919699489488,1cyclictest0-21swapper/600:15:0112
11920199483481,2cyclictest305047-21kworker/7:1+i915-unordered23:08:0113
11918799477475,2cyclictest0-21swapper/400:31:0110
1191739947612,463cyclictest0-21swapper/000:15:010
119196994757,467cyclictest781ktimers/620:42:0112
1191849947221,30cyclictest0-21swapper/300:32:459
1191849947120,30cyclictest0-21swapper/321:34:229
11919699470440,30cyclictest0-21swapper/619:18:0112
119173994701,29cyclictest0-21swapper/019:41:010
119173994701,29cyclictest0-21swapper/019:41:010
1191739946926,30cyclictest0-21swapper/019:57:010
119184994689,30cyclictest0-21swapper/322:44:229
1191849946821,29cyclictest0-21swapper/321:52:449
11918799467466,1cyclictest0-21swapper/400:10:0110
1191849946721,29cyclictest0-21swapper/323:16:439
1191739946712,454cyclictest0-21swapper/022:31:010
1191849946618,28cyclictest0-21swapper/321:19:239
1191739945920,438cyclictest0-21swapper/022:01:010
1192279945713,30cyclictest0-21swapper/1319:56:015
1192019945711,30cyclictest0-21swapper/723:48:5713
1191739945617,0cyclictest0-21swapper/023:10:010
11922499455454,1cyclictest0-21swapper/1221:20:334
1191739945516,438cyclictest0-21swapper/023:08:010
119184994546,30cyclictest0-21swapper/319:55:449
119173994536,29cyclictest171ktimers/020:55:230
1191739945313,439cyclictest0-21swapper/023:33:010
119201994508,28cyclictest0-21swapper/721:33:5613
119173994502,447cyclictest0-21swapper/022:52:010
1191849944923,29cyclictest0-21swapper/323:50:249
119184994491,28cyclictest0-21swapper/322:43:239
119219994480,1cyclictest0-21swapper/1122:09:143
119184994470,28cyclictest0-21swapper/322:33:249
119173994479,437cyclictest0-21swapper/020:42:010
1192019944510,30cyclictest0-21swapper/719:40:0113
1192019944510,30cyclictest0-21swapper/719:40:0113
1191809944525,419cyclictest0-21swapper/223:11:458
1191779944524,420cyclictest0-21swapper/100:26:231
11917399445443,2cyclictest0-21swapper/000:31:010
1191969944423,29cyclictest0-21swapper/620:25:0112
1192309944323,419cyclictest0-21swapper/1400:17:226
11917399443442,1cyclictest0-21swapper/022:23:010
11917399443442,1cyclictest0-21swapper/022:23:010
11922799442439,2cyclictest114615-21kworker/u64:13+events_unbound19:37:015
11922799442439,2cyclictest114615-21kworker/u64:13+events_unbound19:37:015
1191849944223,416cyclictest0-21swapper/321:08:239
1191779944221,420cyclictest0-21swapper/123:07:231
119227994410,29cyclictest0-21swapper/1319:46:015
1191969944121,30cyclictest0-21swapper/621:02:0112
1191779944120,420cyclictest0-21swapper/121:57:221
1191779944119,421cyclictest0-21swapper/122:46:441
11917399441440,1cyclictest0-21swapper/021:17:010
1192359944019,420cyclictest0-21swapper/1521:50:237
11922799440439,1cyclictest0-21swapper/1323:33:015
1192249944018,421cyclictest0-21swapper/1220:20:234
1192079944020,419cyclictest164028-21kworker/9:2-events20:19:2215
1191779944018,421cyclictest0-21swapper/122:05:221
1191779944017,422cyclictest0-21swapper/123:15:221
1191779944017,422cyclictest0-21swapper/122:03:241
1192309943919,419cyclictest0-21swapper/1420:02:256
1191779943919,419cyclictest0-21swapper/100:18:441
1191779943917,421cyclictest0-21swapper/122:29:431
1191779943917,421cyclictest0-21swapper/121:37:441
1191779943916,422cyclictest0-21swapper/123:46:421
1192309943817,419cyclictest0-21swapper/1423:43:426
1192279943825,412cyclictest0-21swapper/1323:26:015
1192309943719,0cyclictest0-21swapper/1420:43:436
1192309943717,418cyclictest0-21swapper/1420:10:226
1192309943717,417cyclictest0-21swapper/1420:44:456
1192309943715,419cyclictest0-21swapper/1423:33:466
1192309943715,419cyclictest0-21swapper/1400:12:436
1192279943724,413cyclictest0-21swapper/1319:50:015
1192249943717,419cyclictest0-21swapper/1219:43:234
1192249943717,419cyclictest0-21swapper/1219:43:234
1192019943722,30cyclictest0-21swapper/720:17:0113
1191969943721,415cyclictest0-21swapper/620:57:0112
1191779943715,421cyclictest0-21swapper/100:22:441
11923099436433,3cyclictest1818-21snmpd20:38:356
119227994360,27cyclictest0-21swapper/1322:53:015
1192079943618,417cyclictest0-21swapper/921:35:4615
11918799436434,1cyclictest297329-21kworker/4:2+i915-unordered22:50:2410
1191809943612,30cyclictest43-21ksoftirqd/219:17:018
1191779943615,420cyclictest0-21swapper/121:52:221
11917399436435,1cyclictest0-21swapper/000:10:010
1192279943517,29cyclictest0-21swapper/1321:26:015
1192079943517,417cyclictest0-21swapper/923:11:2215
1192079943418,415cyclictest0-21swapper/922:29:2215
11919699434432,2cyclictest1818-21snmpd22:18:3212
11919699434432,2cyclictest1818-21snmpd22:18:3212
11918799434432,2cyclictest1818-21snmpd21:20:3310
1191879943410,29cyclictest0-21swapper/421:24:2410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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