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2026-06-23 - 08:46
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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 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
327699453,7cyclictest24032-21df_abs21:00:153
327699450,11cyclictest29943-21awk21:10:263
327699450,10cyclictest30754-21awk22:20:213
3275994524,3cyclictest33-21ksoftirqd/220:14:592
3275994513,6cyclictest33-21ksoftirqd/223:25:012
3275994513,6cyclictest33-21ksoftirqd/222:45:222
3275994511,6cyclictest33-21ksoftirqd/219:55:272
139391450,0ptp4l401ktimersoftd/321:58:333
327699442,6cyclictest401ktimersoftd/320:40:003
3276994416,6cyclictest41-21ksoftirqd/323:30:203
327699440,16cyclictest8248-21cstates21:35:153
3275994431,10cyclictest33-21ksoftirqd/220:45:252
3275994414,3cyclictest33-21ksoftirqd/220:30:262
3275994413,4cyclictest33-21ksoftirqd/200:20:262
3275994412,5cyclictest33-21ksoftirqd/219:55:012
3275994412,4cyclictest33-21ksoftirqd/222:35:142
3275994411,6cyclictest33-21ksoftirqd/220:25:202
327599439,7cyclictest33-21ksoftirqd/221:00:132
327599433,3cyclictest121rcu_preempt23:25:152
3275994331,3cyclictest33-21ksoftirqd/222:50:272
3275994313,6cyclictest33-21ksoftirqd/222:15:142
3275994312,8cyclictest33-21ksoftirqd/223:00:012
3275994312,5cyclictest33-21ksoftirqd/219:35:232
3275994310,6cyclictest33-21ksoftirqd/223:10:132
3275994310,6cyclictest33-21ksoftirqd/223:10:132
3275994310,5cyclictest33-21ksoftirqd/220:55:142
139391430,0ptp4l401ktimersoftd/323:52:493
3276994237,3cyclictest29361-21ls22:20:003
327699421,6cyclictest1992-21cat22:29:593
327599429,8cyclictest33-21ksoftirqd/200:25:192
327599429,5cyclictest33-21ksoftirqd/220:00:192
3275994236,3cyclictest33-21ksoftirqd/221:55:262
3275994229,4cyclictest33-21ksoftirqd/221:25:002
3275994213,4cyclictest33-21ksoftirqd/223:05:162
3275994210,5cyclictest33-21ksoftirqd/219:15:192
3274994237,3cyclictest25-21ksoftirqd/120:20:001
3276994118,3cyclictest41-21ksoftirqd/322:09:083
3276994110,6cyclictest41-21ksoftirqd/300:35:143
3275994110,6cyclictest33-21ksoftirqd/220:15:142
3275994110,5cyclictest33-21ksoftirqd/219:30:142
3274994134,4cyclictest25-21ksoftirqd/121:59:591
3276994025,6cyclictest41-21ksoftirqd/300:10:173
3276994015,7cyclictest41-21ksoftirqd/300:05:243
327599409,5cyclictest33-21ksoftirqd/200:35:172
3275994033,4cyclictest33-21ksoftirqd/219:44:592
3275994028,3cyclictest33-21ksoftirqd/219:10:152
3275994011,5cyclictest33-21ksoftirqd/219:45:162
3275994010,4cyclictest33-21ksoftirqd/222:00:192
3274994034,3cyclictest25-21ksoftirqd/119:40:001
3276993918,3cyclictest41-21ksoftirqd/300:24:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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