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2026-04-01 - 18:32
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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
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Wed Apr 01, 2026 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315342204150,21sleep10-21swapper/107:07:441
315412203165,25sleep30-21swapper/307:07:503
316992200162,25sleep00-21swapper/007:09:520
313612199160,26sleep20-21swapper/207:05:272
113782710,0sleep20-21swapper/210:15:002
103792580,0sleep30-21swapper/310:55:143
31814991716,1cyclictest28-21ksoftirqd/209:30:002
298742140,0sleep30-21swapper/309:55:183
3179799123,4cyclictest22143-21latency_hist12:35:000
31797991211,1cyclictest9-21ksoftirqd/008:50:000
3179799120,4cyclictest4601-21apt-get11:30:120
3179799120,11cyclictest0-21swapper/010:50:210
3181499119,1cyclictest28-21ksoftirqd/207:40:002
3179799119,1cyclictest9-21ksoftirqd/011:15:000
3179799119,1cyclictest9-21ksoftirqd/009:30:000
31797991110,1cyclictest9-21ksoftirqd/012:15:000
31797991110,1cyclictest9-21ksoftirqd/010:40:000
3182199100,7cyclictest1727-21munin-node07:19:323
3181499100,10cyclictest61650irq/122-eno111:20:202
3179799109,1cyclictest9-21ksoftirqd/011:00:150
3179799109,1cyclictest9-21ksoftirqd/009:50:180
3179799109,1cyclictest9-21ksoftirqd/008:15:000
3179799108,1cyclictest9-21ksoftirqd/010:40:160
3179799108,1cyclictest9-21ksoftirqd/007:50:000
3179799108,1cyclictest9-21ksoftirqd/007:35:160
3179799100,7cyclictest240-21systemd-journal10:12:020
7233290,0sleep30-21swapper/310:09:213
318219990,7cyclictest1727-21munin-node10:17:013
318149998,1cyclictest28-21ksoftirqd/210:10:002
318149997,1cyclictest28-21ksoftirqd/208:45:002
318149997,1cyclictest28-21ksoftirqd/208:40:002
318149996,1cyclictest28-21ksoftirqd/211:28:342
318149990,0cyclictest0-21swapper/211:47:012
317979998,1cyclictest9-21ksoftirqd/011:50:160
317979998,1cyclictest9-21ksoftirqd/011:05:200
317979998,1cyclictest9-21ksoftirqd/009:40:150
317979998,1cyclictest9-21ksoftirqd/009:10:150
317979998,1cyclictest9-21ksoftirqd/008:40:000
317979998,1cyclictest9-21ksoftirqd/008:30:000
317979998,1cyclictest9-21ksoftirqd/007:50:140
317979997,1cyclictest9-21ksoftirqd/012:15:140
317979993,5cyclictest16782-21latency_hist07:45:000
317979992,6cyclictest1727-21munin-node09:15:250
317979991,7cyclictest16091-21grep10:20:170
317979991,2cyclictest0-21swapper/010:00:120
27705290,0sleep30-21swapper/311:17:053
318219983,4cyclictest10273-21kworker/u8:112:23:263
318219980,6cyclictest0-21swapper/311:28:323
318219980,4cyclictest0-21swapper/308:55:123
318149986,1cyclictest61650irq/122-eno112:10:202
318149986,1cyclictest61650irq/122-eno109:50:192
318149986,1cyclictest28-21ksoftirqd/211:50:142
318149986,1cyclictest28-21ksoftirqd/211:39:462
318149986,1cyclictest28-21ksoftirqd/210:25:002
318149986,0cyclictest61650irq/122-eno110:03:472
318149980,3cyclictest294-21systemd-udevd12:07:082
318069980,3cyclictest0-21swapper/110:00:121
317979988,0cyclictest9-21ksoftirqd/010:15:140
317979988,0cyclictest9-21ksoftirqd/007:55:120
317979987,1cyclictest9-21ksoftirqd/011:25:140
317979987,1cyclictest9-21ksoftirqd/011:20:000
317979987,1cyclictest9-21ksoftirqd/010:10:000
317979987,1cyclictest9-21ksoftirqd/009:05:140
317979986,1cyclictest9-21ksoftirqd/009:30:130
317979986,1cyclictest9-21ksoftirqd/007:20:000
317979986,1cyclictest22740-21perf09:05:000
317979983,2cyclictest101rcuc/009:45:150
317979980,7cyclictest11204-21ssh11:37:250
317979980,2cyclictest240-21systemd-journal11:49:550
318219976,1cyclictest603-21ntpq12:05:173
318219976,1cyclictest35-21ksoftirqd/310:40:003
318219975,2cyclictest693-21runrttasks11:47:483
318219973,3cyclictest6355-21cut10:50:133
318219973,2cyclictest240-21systemd-journal08:24:553
318219972,1cyclictest19047-21smartctl11:05:203
318219971,5cyclictest561-21nscd09:31:193
318219971,3cyclictest25086-21diskmemload10:11:413
318219971,3cyclictest25086-21diskmemload09:20:143
318219970,4cyclictest24716-21diskstats11:55:153
318219970,1cyclictest0-21swapper/307:45:113
318149976,1cyclictest61650irq/122-eno112:22:372
318149976,1cyclictest61650irq/122-eno110:57:212
318149976,1cyclictest61650irq/122-eno110:44:142
318149976,1cyclictest61650irq/122-eno110:32:062
318149976,1cyclictest61650irq/122-eno109:45:152
318149976,1cyclictest61650irq/122-eno109:37:222
318149976,1cyclictest61650irq/122-eno108:15:192
318149976,1cyclictest61650irq/122-eno107:25:122
318149975,1cyclictest61650irq/122-eno109:40:192
318149975,1cyclictest61650irq/122-eno109:30:122
318149975,1cyclictest61650irq/122-eno108:45:202
318149975,1cyclictest61650irq/122-eno108:10:122
318149975,1cyclictest28-21ksoftirqd/207:50:112
318149975,1cyclictest28-21ksoftirqd/207:25:012
318149975,1cyclictest21740-21apt-get07:55:122
318149971,4cyclictest11792-21kworker/u8:211:43:022
318149971,4cyclictest0-21swapper/209:00:122
318149970,2cyclictest0-21swapper/212:35:112
318069971,4cyclictest0-21swapper/111:15:111
318069970,6cyclictest0-21swapper/111:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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