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2026-03-07 - 14:54
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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 Sat Mar 07, 2026 12:45:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
234992198161,24sleep10-21swapper/107:08:171
233162198159,26sleep20-21swapper/207:05:532
233942196158,25sleep30-21swapper/307:06:543
233022196159,25sleep00-21swapper/007:05:430
267522720,0sleep00-21swapper/011:15:220
23705996023,37cyclictest34950irq/126-i91510:33:120
2371799210,11cyclictest0-21swapper/210:33:122
23718991616,0cyclictest24630-21decode-dimms10:33:123
2371399160,16cyclictest0-21swapper/110:33:121
23705991512,1cyclictest9-21ksoftirqd/008:50:000
291202140,0sleep328209-21/usr/sbin/munin08:25:173
23718991310,1cyclictest35-21ksoftirqd/310:14:553
23717991211,1cyclictest28-21ksoftirqd/207:25:002
23705991210,1cyclictest9-21ksoftirqd/007:19:590
2371799119,1cyclictest28-21ksoftirqd/209:30:002
2371799119,1cyclictest28-21ksoftirqd/207:35:002
23717991110,1cyclictest28-21ksoftirqd/207:15:002
2371899108,1cyclictest35-21ksoftirqd/309:45:093
2371799109,1cyclictest28-21ksoftirqd/210:00:132
2371799109,1cyclictest28-21ksoftirqd/207:15:012
2371799109,0cyclictest271rcuc/208:00:142
2371799109,0cyclictest271rcuc/208:00:132
2371799108,1cyclictest28-21ksoftirqd/211:15:002
2371799108,1cyclictest28-21ksoftirqd/209:55:002
2371799108,1cyclictest28-21ksoftirqd/208:20:002
23717991010,0cyclictest0-21swapper/211:40:542
2370599102,4cyclictest21510-21/usr/sbin/munin09:19:590
237189990,1cyclictest24217-21aten_r1power_po09:25:133
237189990,1cyclictest0-21swapper/311:45:113
237179998,1cyclictest28-21ksoftirqd/208:20:142
237179997,1cyclictest28-21ksoftirqd/210:10:182
237179997,1cyclictest28-21ksoftirqd/209:35:002
237179997,1cyclictest28-21ksoftirqd/207:40:002
237059997,1cyclictest14717-21aten_r1power_en09:05:120
237059994,1cyclictest0-21swapper/007:50:160
237059993,5cyclictest559-21cron08:05:000
237059993,5cyclictest559-21cron08:05:000
31614282,5sleep228-21ksoftirqd/211:22:422
237189987,1cyclictest35-21ksoftirqd/309:52:523
237189987,1cyclictest35-21ksoftirqd/308:00:133
237189987,1cyclictest35-21ksoftirqd/308:00:133
237189986,1cyclictest707-21snmpd12:32:013
237189986,1cyclictest707-21snmpd10:40:393
237189983,2cyclictest16788-21diskmemload11:25:403
237189980,5cyclictest11242-21latency_hist07:50:013
237189980,2cyclictest0-21swapper/310:15:123
237179987,1cyclictest28-21ksoftirqd/209:20:012
237179986,1cyclictest707-21snmpd12:36:232
237179986,1cyclictest707-21snmpd12:21:132
237179986,1cyclictest61650irq/122-eno112:15:192
237179986,1cyclictest61650irq/122-eno110:59:212
237179986,1cyclictest28-21ksoftirqd/207:55:142
237179986,1cyclictest28-21ksoftirqd/207:50:002
237179982,5cyclictest29339-21updatedb.mlocat08:29:022
237179980,7cyclictest0-21swapper/212:10:142
237179980,6cyclictest26070-21munin-node08:57:322
237059986,1cyclictest22016-21ssh11:10:150
237059981,6cyclictest6996-21ssh12:17:530
237059981,6cyclictest21353-21ssh12:35:210
237059980,7cyclictest4451-21cpuspeed_turbos11:30:120
237059980,4cyclictest19192-21perf09:14:590
237059980,1cyclictest8621-21diskstats12:20:130
23074280,1sleep30-21swapper/309:20:203
8917270,0sleep10-21swapper/110:00:131
237189977,0cyclictest35-21ksoftirqd/312:25:003
237189976,1cyclictest31874-21ssh11:23:223
237189975,1cyclictest707-21snmpd12:28:023
237189975,1cyclictest707-21snmpd12:07:363
237189975,1cyclictest707-21snmpd10:56:213
237189975,1cyclictest326-21cat07:25:163
237189970,6cyclictest26070-21munin-node09:44:233
237189970,4cyclictest0-21swapper/311:57:143
237189970,4cyclictest0-21swapper/310:50:333
237179976,1cyclictest61650irq/122-eno112:30:132
237179976,1cyclictest61650irq/122-eno112:25:192
237179976,1cyclictest61650irq/122-eno111:15:202
237179976,1cyclictest61650irq/122-eno111:04:262
237179976,1cyclictest61650irq/122-eno110:45:072
237179976,1cyclictest61650irq/122-eno110:35:132
237179976,1cyclictest28-21ksoftirqd/212:00:122
237179976,1cyclictest28-21ksoftirqd/209:00:122
237179976,1cyclictest28-21ksoftirqd/208:45:002
237179975,2cyclictest11682-21apt07:50:092
237179975,1cyclictest61650irq/122-eno110:50:132
237179975,1cyclictest61650irq/122-eno110:40:132
237179975,1cyclictest61650irq/122-eno108:45:142
237179975,1cyclictest28-21ksoftirqd/211:55:142
237179975,1cyclictest28-21ksoftirqd/209:05:142
237179974,1cyclictest240-21systemd-journal11:55:002
237179971,3cyclictest16788-21diskmemload11:31:312
237139970,4cyclictest0-21swapper/107:15:111
237139970,1cyclictest0-21swapper/110:25:151
237059976,1cyclictest9-21ksoftirqd/008:18:500
237059976,1cyclictest707-21snmpd11:52:050
237059975,1cyclictest29844-21ssh10:40:110
237059973,1cyclictest11953-21/usr/sbin/munin12:25:140
237059971,6cyclictest26792-21ssh12:00:080
237059971,2cyclictest0-21swapper/008:50:130
237059970,6cyclictest18512-21perl10:20:140
237059970,6cyclictest15789-21apt-get12:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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