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2026-04-08 - 00:16
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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 Tue Apr 07, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71142212161,25sleep20-21swapper/207:08:102
69212210171,25sleep00-21swapper/007:05:380
71602205168,24sleep10-21swapper/107:08:461
69362199160,25sleep30-21swapper/307:05:503
142672620,0sleep10-21swapper/111:32:381
262232600,0sleep30-21swapper/310:25:033
153412590,0sleep30-21swapper/310:10:133
63522580,0sleep10-21swapper/109:58:461
734499175,12cyclictest0-21swapper/110:15:121
94632160,1sleep08011-21/usr/sbin/munin09:20:200
7344991511,4cyclictest21-21ksoftirqd/111:26:511
7339991412,1cyclictest9-21ksoftirqd/011:00:000
7357991310,1cyclictest35-21ksoftirqd/310:00:003
735299130,13cyclictest0-21swapper/211:45:202
735299130,12cyclictest0-21swapper/210:15:142
735299130,1cyclictest24286-21/usr/sbin/munin09:40:182
733999132,5cyclictest18105-21date08:40:000
7339991311,1cyclictest9-21ksoftirqd/012:40:000
734499128,4cyclictest21-21ksoftirqd/112:00:271
734499117,4cyclictest0-21swapper/108:16:341
734499112,2cyclictest0-21swapper/107:45:121
733999112,4cyclictest17444-21latency_hist07:30:010
7339991110,1cyclictest9-21ksoftirqd/012:25:000
735299108,1cyclictest28-21ksoftirqd/212:10:012
735299100,9cyclictest10333-21kworker/u8:210:40:222
734499100,10cyclictest0-21swapper/111:49:151
733999108,1cyclictest9-21ksoftirqd/011:40:000
733999108,1cyclictest9-21ksoftirqd/010:50:000
733999108,1cyclictest9-21ksoftirqd/010:30:000
733999103,6cyclictest5979-21cut10:40:140
733999102,4cyclictest6250-21munin-plugin-st08:15:000
733999102,4cyclictest1247-21perf10:35:000
733999101,4cyclictest26676-21sed11:50:000
733999100,4cyclictest240-21systemd-journal12:03:310
73579998,1cyclictest35-21ksoftirqd/309:35:013
73579990,0cyclictest0-21swapper/312:30:113
73529998,1cyclictest28-21ksoftirqd/211:04:002
73529998,1cyclictest17385-21/usr/sbin/munin12:20:162
73529990,7cyclictest0-21swapper/208:15:122
73449999,0cyclictest21-21ksoftirqd/110:20:201
73449996,0cyclictest0-21swapper/110:53:181
73449995,4cyclictest56-21kworker/1:112:34:021
73449995,4cyclictest0-21swapper/108:27:431
73449990,9cyclictest0-21swapper/112:35:191
73449990,0cyclictest0-21swapper/111:15:411
73399999,0cyclictest9-21ksoftirqd/009:40:000
73399990,4cyclictest3669-21latency_hist11:20:010
73579988,0cyclictest0-21swapper/310:50:553
73579987,1cyclictest35-21ksoftirqd/312:10:013
73579987,1cyclictest35-21ksoftirqd/310:20:133
73579987,1cyclictest32404-21diskmemload12:36:343
73579986,1cyclictest35-21ksoftirqd/310:35:003
73579984,2cyclictest0-21swapper/311:16:593
73579981,5cyclictest0-21swapper/309:15:373
73579981,4cyclictest12484-21switchtime10:05:193
73579981,3cyclictest0-21swapper/309:36:083
73579980,3cyclictest0-21swapper/312:22:063
73529986,1cyclictest61650irq/122-eno112:25:142
73529986,1cyclictest61650irq/122-eno109:25:142
73529986,1cyclictest61650irq/122-eno109:15:182
73529986,1cyclictest28-21ksoftirqd/211:40:002
73529986,1cyclictest28-21ksoftirqd/208:44:592
73529986,1cyclictest11599-21diskmemload12:10:292
73529985,3cyclictest61650irq/122-eno109:12:532
73529985,1cyclictest61650irq/122-eno110:55:002
73529982,3cyclictest0-21swapper/207:15:122
73529980,2cyclictest0-21swapper/210:25:182
73449988,0cyclictest21-21ksoftirqd/109:46:041
73449988,0cyclictest21-21ksoftirqd/107:10:111
73449987,1cyclictest0-21swapper/110:05:151
73449986,1cyclictest21-21ksoftirqd/111:40:101
73449985,0cyclictest0-21swapper/108:50:071
73449981,5cyclictest0-21swapper/109:10:111
73449980,4cyclictest0-21swapper/112:21:351
73399987,1cyclictest9-21ksoftirqd/009:35:010
73399986,1cyclictest14609-21ssh09:26:410
73399985,2cyclictest8320-21ssh10:00:170
73399984,2cyclictest240-21systemd-journal11:35:000
73399984,2cyclictest240-21systemd-journal07:20:000
73399982,3cyclictest12306-21kworker/u8:009:51:340
73399981,1cyclictest12024-1kworker/u9:212:14:420
73399980,7cyclictest4084-21/usr/sbin/munin09:15:170
73399980,5cyclictest9530-1kworker/u9:010:05:160
73399980,4cyclictest24463-21perf11:05:000
73399980,4cyclictest18995-21df08:40:120
73579976,1cyclictest35-21ksoftirqd/312:27:193
73579976,1cyclictest35-21ksoftirqd/308:10:003
73579976,1cyclictest35-21ksoftirqd/307:34:593
73579975,1cyclictest3943-21ssh10:37:083
73579975,1cyclictest32404-21diskmemload09:25:563
73579974,0cyclictest32404-21diskmemload11:00:163
73579973,2cyclictest240-21systemd-journal10:46:593
73579972,3cyclictest22922-21forks07:40:153
73579971,4cyclictest28496-21/usr/sbin/munin11:10:123
73579971,3cyclictest0-21swapper/309:50:113
73579970,6cyclictest24092-1kworker/u9:111:06:203
73579970,4cyclictest9672-21cron07:15:003
73579970,4cyclictest14199-21ssh12:15:153
73529977,0cyclictest0-21swapper/211:12:462
73529976,1cyclictest61650irq/122-eno112:31:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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