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2026-04-22 - 22:34
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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 22, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283252211149,49sleep00-21swapper/007:08:160
284032199160,25sleep10-21swapper/107:09:181
282912199159,26sleep30-21swapper/307:07:513
284392198158,26sleep20-21swapper/207:09:472
157502580,0sleep30-21swapper/311:09:013
29202180,0sleep10-21swapper/108:30:151
7512140,0sleep10-21swapper/110:49:281
28530991311,1cyclictest28-21ksoftirqd/210:40:002
2852999130,12cyclictest0-21swapper/108:20:151
2852899133,5cyclictest27775-21perf10:00:000
28528991210,1cyclictest9-21ksoftirqd/007:30:010
53162110,0sleep20-21swapper/208:35:132
28530991110,1cyclictest28-21ksoftirqd/207:25:002
28528991110,1cyclictest9-21ksoftirqd/012:30:130
28528991110,1cyclictest9-21ksoftirqd/011:55:150
28528991110,1cyclictest9-21ksoftirqd/010:50:130
2853499100,4cyclictest557-21irqbalance12:10:563
2853099109,1cyclictest28-21ksoftirqd/209:15:002
2853099108,1cyclictest28-21ksoftirqd/209:10:002
2853099108,1cyclictest28-21ksoftirqd/209:00:132
2853099101,5cyclictest30899-21munin-node11:27:052
2852899109,1cyclictest9-21ksoftirqd/011:35:140
2852899108,1cyclictest9-21ksoftirqd/012:20:130
2852899108,1cyclictest9-21ksoftirqd/009:55:000
285349998,1cyclictest35-21ksoftirqd/311:05:003
285309998,1cyclictest28-21ksoftirqd/208:05:002
285309997,1cyclictest28-21ksoftirqd/209:45:112
285309994,4cyclictest61650irq/122-eno109:35:022
285309990,6cyclictest927-21kworker/u8:210:07:012
285299990,4cyclictest0-21swapper/109:15:121
285289998,1cyclictest9-21ksoftirqd/011:31:500
285289998,1cyclictest9-21ksoftirqd/011:15:000
285289998,1cyclictest9-21ksoftirqd/009:30:000
285289997,1cyclictest9-21ksoftirqd/011:00:140
285289997,1cyclictest9-21ksoftirqd/009:10:000
285289995,2cyclictest9-21ksoftirqd/008:00:160
285289993,5cyclictest10984-21perf07:40:000
285289991,7cyclictest16248-21/usr/sbin/munin12:35:110
285289990,4cyclictest14317-21perf10:25:000
285349987,1cyclictest35-21ksoftirqd/308:15:003
285349985,1cyclictest13650irq/124-ahci[0011:44:553
285349981,1cyclictest0-21swapper/308:55:143
285349980,3cyclictest0-21swapper/308:30:123
285309988,0cyclictest0-21swapper/212:28:402
285309987,1cyclictest28-21ksoftirqd/210:45:122
285309987,1cyclictest28-21ksoftirqd/210:34:442
285309986,1cyclictest61650irq/122-eno111:43:262
285309986,1cyclictest61650irq/122-eno110:25:112
285309981,3cyclictest0-21swapper/210:10:182
285299981,2cyclictest0-21swapper/111:10:131
285289988,0cyclictest9-21ksoftirqd/008:15:180
285289987,1cyclictest9-21ksoftirqd/011:25:000
285289987,1cyclictest9-21ksoftirqd/010:30:000
285289987,1cyclictest9-21ksoftirqd/009:10:130
285289987,1cyclictest9-21ksoftirqd/008:05:140
285289986,1cyclictest9-21ksoftirqd/011:15:140
285289986,1cyclictest9-21ksoftirqd/009:50:000
285289986,1cyclictest9-21ksoftirqd/008:25:010
285289986,1cyclictest17998-21snmpd07:17:110
285289982,5cyclictest13430-21taskset08:50:180
285289981,6cyclictest7235-21cpuspeed_turbos10:15:120
285289981,3cyclictest21234-21diskmemload09:19:050
285289981,3cyclictest14003-21perf11:50:000
285289980,4cyclictest16495-21latency_hist09:00:000
285349976,1cyclictest35-21ksoftirqd/311:40:003
285349976,1cyclictest17998-21snmpd12:01:443
285349975,1cyclictest28321-21ssh09:18:203
285349975,1cyclictest21234-21diskmemload09:55:193
285349975,1cyclictest17998-21snmpd08:37:323
285349975,0cyclictest13650irq/124-ahci[0008:09:543
285349971,5cyclictest30530-21ssh10:45:133
285349971,5cyclictest1-21systemd12:00:003
285349970,6cyclictest2725-1kworker/u9:109:29:393
285349970,6cyclictest15056-21ssh12:32:313
285349970,6cyclictest1306-21ssh10:05:453
285349970,3cyclictest0-21swapper/312:25:083
285309976,1cyclictest61650irq/122-eno112:35:142
285309976,1cyclictest61650irq/122-eno111:33:492
285309976,1cyclictest61650irq/122-eno111:10:002
285309976,1cyclictest61650irq/122-eno109:41:102
285309976,1cyclictest28-21ksoftirqd/212:25:002
285309976,1cyclictest17998-21snmpd07:37:242
285309976,0cyclictest61650irq/122-eno111:50:212
285309976,0cyclictest61650irq/122-eno109:25:172
285309975,1cyclictest61650irq/122-eno111:56:392
285309975,1cyclictest61650irq/122-eno109:30:162
285309975,1cyclictest17998-21snmpd07:30:532
285309973,1cyclictest21234-21diskmemload09:19:042
285309971,5cyclictest0-21swapper/210:23:172
285309971,4cyclictest23740-21apt-get09:55:012
285309971,2cyclictest0-21swapper/211:35:112
285309970,3cyclictest561-21nscd09:53:102
285299971,6cyclictest0-21swapper/107:57:211
285299971,3cyclictest0-21swapper/110:35:131
285299971,3cyclictest0-21swapper/108:45:011
285299970,4cyclictest0-21swapper/112:20:211
285299970,4cyclictest0-21swapper/112:13:341
285299970,4cyclictest0-21swapper/112:03:291
285299970,3cyclictest0-21swapper/110:10:191
285299970,1cyclictest0-21swapper/108:50:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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