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2026-04-29 - 16:01
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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 50 highest latencies:
System rack1slot1.osadl.org (updated Wed Apr 29, 2026 12:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
257042215149,22sleep00-21swapper/007:09:500
254882215149,23sleep20-21swapper/207:07:022
255952210150,48sleep30-21swapper/307:08:243
256282197159,25sleep10-21swapper/107:08:501
194421320,0sleep20-21swapper/212:20:142
302502690,0sleep30-21swapper/310:05:183
302502690,0sleep30-21swapper/310:05:173
50512150,0sleep30-21swapper/310:15:153
25809991514,1cyclictest28-21ksoftirqd/210:00:132
2579299149,5cyclictest20221-21ssh12:00:180
2579299132,5cyclictest11589-21latency_hist08:55:000
2581799120,11cyclictest0-21swapper/308:25:003
25809991211,1cyclictest28-21ksoftirqd/210:45:002
25809991210,1cyclictest28-21ksoftirqd/211:45:012
2580999120,11cyclictest0-21swapper/212:12:052
2580999120,11cyclictest0-21swapper/209:14:372
2579299129,2cyclictest1741-21ntp_states10:10:180
2579299129,2cyclictest0-21swapper/009:55:140
2579299124,4cyclictest28994-21sed10:05:010
2579299122,6cyclictest18650-21diskmemload10:25:170
2581799110,7cyclictest13341-1kworker/u9:212:05:003
2580999119,1cyclictest28-21ksoftirqd/209:35:122
25809991110,1cyclictest28-21ksoftirqd/207:40:002
2579299119,2cyclictest0-21swapper/008:30:160
2579299119,1cyclictest8273-21grep09:35:200
2579299119,1cyclictest0-21swapper/012:30:110
25792991110,1cyclictest3608-21sendmail-msp11:40:000
25792991110,1cyclictest23941-21ntp_states12:05:170
2579299110,10cyclictest18650-21diskmemload09:20:150
2581799109,1cyclictest35-21ksoftirqd/307:15:013
2581799101,0cyclictest18650-21diskmemload10:45:173
2580999109,1cyclictest28-21ksoftirqd/209:50:002
2580999109,1cyclictest28-21ksoftirqd/208:55:152
2580999109,1cyclictest28-21ksoftirqd/208:45:002
2580999109,1cyclictest28-21ksoftirqd/208:40:012
2580999109,1cyclictest28-21ksoftirqd/208:15:002
2580999109,0cyclictest0-21swapper/211:47:272
2580999108,1cyclictest583-21in:imuxsock09:30:002
2580999108,1cyclictest28-21ksoftirqd/210:30:132
2580999108,1cyclictest28-21ksoftirqd/207:15:012
25809991010,0cyclictest0-21swapper/209:26:532
2580999101,9cyclictest0-21swapper/210:47:272
2580999101,8cyclictest28-21ksoftirqd/212:00:142
2580999100,7cyclictest0-21swapper/209:50:122
2579299109,1cyclictest21198-21apt-get11:20:100
2579299109,1cyclictest0-21swapper/010:20:180
2579299109,1cyclictest0-21swapper/009:00:110
2579299108,2cyclictest0-21swapper/011:15:190
2579299107,2cyclictest18650-21diskmemload10:45:250
2579299103,2cyclictest15701-21/usr/sbin/munin07:55:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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