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2026-06-23 - 08:37
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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 rackdslot3.osadl.org (updated Tue Jun 23, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28482235168,23sleep20-21swapper/219:08:162
139491206172,22phc2sys0-21swapper/319:08:583
28462205172,22sleep00-21swapper/019:08:140
26342205172,22sleep10-21swapper/119:05:351
139391770,1ptp4l391rcuc/320:05:183
327699584,6cyclictest8754-21sh20:30:003
327699567,5cyclictest41-21ksoftirqd/319:15:153
3276995510,5cyclictest41-21ksoftirqd/320:20:223
3276995510,5cyclictest41-21ksoftirqd/320:20:223
3275995522,4cyclictest33-21ksoftirqd/223:20:002
3276995418,4cyclictest41-21ksoftirqd/322:30:113
327399543,9cyclictest14400-21cpuspeed_turbos22:55:140
327399534,7cyclictest8036-21cut22:40:180
3273995220,3cyclictest9-21ksoftirqd/022:09:120
122262520,7sleep3327699cyclictest22:50:133
327699514,7cyclictest26963-21latency_hist20:00:003
3273995120,3cyclictest9-21ksoftirqd/019:58:310
3275995015,6cyclictest33-21ksoftirqd/200:20:002
3275995015,4cyclictest33-21ksoftirqd/219:25:002
57898490,12rtkit-daemon577-21rtkit-daemon23:02:021
327699494,8cyclictest14238-21sed19:30:243
327599492,43cyclictest26969-21sh22:15:002
327599492,43cyclictest26969-21sh22:15:002
3274994944,3cyclictest30718-21sshd23:27:261
327699482,8cyclictest27094-21irqrtprio23:20:183
327699482,7cyclictest1995-21cstates20:15:133
327699482,7cyclictest13071-21/usr/sbin/munin00:00:163
327699481,7cyclictest401ktimersoftd/320:50:003
327699481,11cyclictest4633-21gzip19:10:243
327599489,6cyclictest33-21ksoftirqd/223:00:242
3275994816,5cyclictest33-21ksoftirqd/222:25:102
3275994814,4cyclictest33-21ksoftirqd/222:25:012
327399486,6cyclictest24597-21cron22:10:000
327399486,6cyclictest24597-21cron22:10:000
327399486,5cyclictest6012-21grep23:45:120
3273994820,8cyclictest9-21ksoftirqd/023:08:340
327699471,11cyclictest1956-21awk21:20:213
327699470,7cyclictest401ktimersoftd/322:35:013
3275994714,6cyclictest33-21ksoftirqd/223:50:002
3275994714,6cyclictest33-21ksoftirqd/220:35:142
3275994712,4cyclictest33-21ksoftirqd/222:40:192
327699464,6cyclictest20862-21cstates00:15:143
327699463,7cyclictest25504-21unixbench_multi23:15:283
327699462,5cyclictest41-21ksoftirqd/320:50:173
327699461,5cyclictest401ktimersoftd/319:50:163
327599464,3cyclictest121rcu_preempt21:05:172
3275994618,7cyclictest33-21ksoftirqd/200:35:002
3275994615,6cyclictest33-21ksoftirqd/223:55:122
3275994615,10cyclictest33-21ksoftirqd/220:05:282
3275994614,5cyclictest33-21ksoftirqd/221:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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