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2026-03-13 - 12:21
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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 rackdslot1.osadl.org (updated Fri Mar 13, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1344914760,1ptp4l7076-21ls19:05:210
1344914760,1ptp4l7076-21ls19:05:210
8396997830,6cyclictest25-21ksoftirqd/100:05:001
7842660,3sleep2321ktimersoftd/220:00:252
8396996428,6cyclictest25-21ksoftirqd/100:15:131
8396996329,7cyclictest25-21ksoftirqd/100:30:011
8396996328,4cyclictest25-21ksoftirqd/119:15:251
8395996223,6cyclictest9-21ksoftirqd/020:20:070
8396996133,4cyclictest25-21ksoftirqd/121:17:321
8396996131,4cyclictest25-21ksoftirqd/119:10:261
8396996129,9cyclictest25-21ksoftirqd/121:35:121
8396996030,6cyclictest25-21ksoftirqd/123:25:001
8396996028,6cyclictest25-21ksoftirqd/119:40:131
8395995929,3cyclictest9-21ksoftirqd/020:10:120
134491590,4ptp4l0-21swapper/322:35:493
134491590,4ptp4l0-21swapper/000:32:360
839699582,9cyclictest25-21ksoftirqd/122:15:011
839599585,10cyclictest9-21ksoftirqd/019:35:210
839599584,9cyclictest9-21ksoftirqd/021:10:230
134491580,4ptp4l17815-21dump-pmu-power19:30:003
134491580,4ptp4l0-21swapper/221:35:002
134491580,4ptp4l0-21swapper/022:02:050
134491580,3ptp4l0-21swapper/220:12:502
839699574,9cyclictest25-21ksoftirqd/100:20:261
8396995731,7cyclictest25-21ksoftirqd/123:05:141
8396995727,4cyclictest25-21ksoftirqd/122:40:261
8396995726,9cyclictest25-21ksoftirqd/121:05:261
839599573,9cyclictest9-21ksoftirqd/019:50:000
134491570,3ptp4l0-21swapper/321:55:273
134491570,3ptp4l0-21swapper/223:15:202
134491570,3ptp4l0-21swapper/220:06:482
8396995620,8cyclictest25-21ksoftirqd/120:20:171
839599565,9cyclictest9-21ksoftirqd/022:55:010
839599565,7cyclictest9-21ksoftirqd/021:00:300
839599565,10cyclictest9-21ksoftirqd/019:30:160
8395995610,3cyclictest121rcu_preempt23:20:150
134491560,5ptp4l0-21swapper/022:35:540
134491560,3ptp4l0-21swapper/322:10:133
134491560,3ptp4l0-21swapper/319:13:203
134491560,3ptp4l0-21swapper/221:15:362
134491560,3ptp4l0-21swapper/219:41:532
839599555,9cyclictest9-21ksoftirqd/020:50:250
839599555,8cyclictest9-21ksoftirqd/020:35:210
839599555,8cyclictest9-21ksoftirqd/020:35:210
134491550,4ptp4l0-21swapper/323:04:113
134491550,3ptp4l0-21swapper/320:02:583
134491550,3ptp4l0-21swapper/319:55:173
134491550,3ptp4l0-21swapper/319:55:173
134491550,3ptp4l0-21swapper/219:45:072
8396995414,4cyclictest25-21ksoftirqd/122:47:541
839599546,8cyclictest20216-21apt21:55:000
839599545,10cyclictest9-21ksoftirqd/021:10:000
839599544,9cyclictest9-21ksoftirqd/022:45:160
839599544,9cyclictest9-21ksoftirqd/019:50:220
839599544,9cyclictest9-21ksoftirqd/019:40:260
839599544,8cyclictest9-21ksoftirqd/000:35:140
134491540,3ptp4l0-21swapper/321:25:003
134491540,3ptp4l0-21swapper/320:31:113
839699536,8cyclictest13767-21apt-get22:50:111
8396995342,3cyclictest25-21ksoftirqd/119:25:001
839699532,9cyclictest25-21ksoftirqd/100:10:141
8396995327,4cyclictest25-21ksoftirqd/119:45:121
8396995324,3cyclictest25-21ksoftirqd/123:45:211
839599534,9cyclictest9-21ksoftirqd/000:10:170
8395995323,9cyclictest9-21ksoftirqd/020:07:320
134491530,5ptp4l0-21swapper/219:08:212
134491530,5ptp4l0-21swapper/219:08:212
8396995223,8cyclictest25-21ksoftirqd/123:50:271
839699522,10cyclictest25-21ksoftirqd/119:50:261
839599525,8cyclictest9-21ksoftirqd/000:20:010
839599524,9cyclictest9-21ksoftirqd/021:20:580
839599521,9cyclictest9-21ksoftirqd/020:15:190
134491520,4ptp4l0-21swapper/223:06:532
134491520,3ptp4l0-21swapper/322:22:043
839699515,9cyclictest25-21ksoftirqd/121:25:271
839699514,8cyclictest25-21ksoftirqd/120:25:201
839699514,10cyclictest25-21ksoftirqd/121:00:271
8396995131,9cyclictest25-21ksoftirqd/123:40:261
839699511,6cyclictest25-21ksoftirqd/122:25:001
839599516,8cyclictest9-21ksoftirqd/023:50:210
839599515,12cyclictest9-21ksoftirqd/021:30:220
839599514,8cyclictest9-21ksoftirqd/020:45:150
839599513,8cyclictest9-21ksoftirqd/023:10:230
839599510,6cyclictest101ktimersoftd/020:00:000
839599510,6cyclictest101ktimersoftd/020:00:000
134491510,4ptp4l0-21swapper/222:55:422
134491510,2ptp4l26069-21ls22:05:193
839699505,8cyclictest17609-21sshd00:05:211
839699505,3cyclictest25-21ksoftirqd/120:45:191
839699505,10cyclictest25-21ksoftirqd/122:05:231
839699504,9cyclictest25-21ksoftirqd/122:15:011
839699503,8cyclictest121rcu_preempt23:15:261
8396995033,8cyclictest25-21ksoftirqd/122:30:151
839699502,8cyclictest25-21ksoftirqd/121:45:151
839699501,6cyclictest25-21ksoftirqd/120:30:261
8396995013,6cyclictest25-21ksoftirqd/122:25:191
839699500,8cyclictest25-21ksoftirqd/121:40:201
839699500,7cyclictest25-21ksoftirqd/100:25:311
839599505,10cyclictest9-21ksoftirqd/019:10:110
839599503,8cyclictest9-21ksoftirqd/022:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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