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2026-04-30 - 13:37
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Thu Apr 30, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491710,4ptp4l0-21swapper/020:35:060
2496996930,8cyclictest41-21ksoftirqd/322:30:223
2496996926,3cyclictest41-21ksoftirqd/300:20:143
2496996732,8cyclictest41-21ksoftirqd/320:05:153
2496996630,4cyclictest41-21ksoftirqd/321:55:003
2496996528,4cyclictest41-21ksoftirqd/319:55:003
2496996432,7cyclictest41-21ksoftirqd/322:50:243
2496996431,9cyclictest41-21ksoftirqd/320:25:003
2496996430,7cyclictest41-21ksoftirqd/320:25:283
2496996430,4cyclictest41-21ksoftirqd/323:30:003
2496996427,4cyclictest41-21ksoftirqd/322:20:203
2496996332,7cyclictest41-21ksoftirqd/300:35:013
2496996331,4cyclictest41-21ksoftirqd/319:30:193
2496996330,9cyclictest41-21ksoftirqd/300:00:183
2496996328,7cyclictest41-21ksoftirqd/319:22:383
2496996327,7cyclictest41-21ksoftirqd/323:10:243
134491630,5ptp4l0-21swapper/021:20:110
2496996230,8cyclictest41-21ksoftirqd/320:15:133
2496996228,9cyclictest41-21ksoftirqd/323:30:153
2496996226,8cyclictest41-21ksoftirqd/319:10:133
2496996132,9cyclictest41-21ksoftirqd/319:25:143
2496996127,8cyclictest41-21ksoftirqd/320:45:003
134491610,4ptp4l25785-21taskset21:08:050
2496996031,7cyclictest41-21ksoftirqd/319:35:253
2496996028,9cyclictest41-21ksoftirqd/320:10:163
2496995926,7cyclictest41-21ksoftirqd/323:39:223
134491590,4ptp4l0-21swapper/119:57:451
134491590,18ptp4l0-21swapper/221:15:252
2496995828,7cyclictest41-21ksoftirqd/321:45:003
134491580,4ptp4l0-21swapper/020:10:280
134491580,3ptp4l5674-21irqstats19:15:190
2496995732,8cyclictest41-21ksoftirqd/321:00:273
2496995727,6cyclictest41-21ksoftirqd/300:10:273
2496995726,7cyclictest41-21ksoftirqd/320:30:263
2496995723,6cyclictest41-21ksoftirqd/322:15:003
2496995720,6cyclictest41-21ksoftirqd/323:20:173
134491570,4ptp4l0-21swapper/000:30:340
2496995622,6cyclictest41-21ksoftirqd/300:20:003
2496995619,9cyclictest41-21ksoftirqd/321:25:143
134491560,4ptp4l0-21swapper/023:10:410
134491560,3ptp4l0-21swapper/120:08:051
2496995524,8cyclictest41-21ksoftirqd/319:45:143
134491550,4ptp4l0-21swapper/122:26:081
134491550,4ptp4l0-21swapper/122:26:081
134491550,4ptp4l0-21swapper/122:04:291
134491550,4ptp4l0-21swapper/022:40:560
2496995423,7cyclictest41-21ksoftirqd/323:46:033
2496995422,7cyclictest41-21ksoftirqd/320:45:143
134491540,4ptp4l0-21swapper/122:48:561
134491540,4ptp4l0-21swapper/019:51:210
134491540,3ptp4l13280-21/usr/sbin/munin20:40:210
134491540,3ptp4l0-21swapper/021:10:180
134491540,12ptp4l0-21swapper/120:20:431
249699535,9cyclictest41-21ksoftirqd/320:50:163
249699535,7cyclictest121rcu_preempt21:17:273
249699532,25cyclictest0-21swapper/321:06:593
134491530,4ptp4l0-21swapper/221:38:422
134491530,4ptp4l0-21swapper/022:56:250
134491530,3ptp4l4831-21apt-get19:15:131
249699523,8cyclictest41-21ksoftirqd/322:40:013
249699522,7cyclictest0-21swapper/322:40:163
249699522,16cyclictest0-21swapper/322:04:583
2496995217,7cyclictest41-21ksoftirqd/321:14:343
134491520,9ptp4l32508-21apt-get19:05:122
134491520,4ptp4l0-21swapper/219:10:012
134491520,4ptp4l0-21swapper/121:05:271
134491520,4ptp4l0-21swapper/119:28:421
134491520,4ptp4l0-21swapper/021:40:010
134491520,3ptp4l0-21swapper/021:00:170
249699516,7cyclictest30616-21sh00:40:013
249699513,6cyclictest0-21swapper/321:20:243
249699512,6cyclictest0-21swapper/322:45:363
2496995125,9cyclictest41-21ksoftirqd/323:40:153
207142510,1sleep320717-21sed20:55:273
134491510,4ptp4l0-21swapper/221:23:582
134491510,4ptp4l0-21swapper/219:46:092
2496995032,9cyclictest41-21ksoftirqd/321:45:143
2496995032,10cyclictest41-21ksoftirqd/319:55:003
249699502,5cyclictest41-21ksoftirqd/320:35:233
249699502,11cyclictest0-21swapper/321:30:253
134491500,5ptp4l0-21swapper/223:09:122
134491500,4ptp4l0-21swapper/319:41:093
134491500,4ptp4l0-21swapper/022:52:340
134491500,4ptp4l0-21swapper/020:48:070
134491500,4ptp4l0-21swapper/000:15:140
134491500,3ptp4l0-21swapper/021:59:450
134491500,3ptp4l0-21swapper/021:36:070
134491500,3ptp4l0-21swapper/019:48:470
77392490,4sleep1241ktimersoftd/123:20:231
249699496,6cyclictest41-21ksoftirqd/300:00:003
249699493,6cyclictest0-21swapper/322:27:593
249699493,6cyclictest0-21swapper/322:27:593
134491490,8ptp4l32494-21/usr/sbin/munin19:05:133
134491490,4ptp4l0-21swapper/220:37:422
134491490,3ptp4l0-21swapper/219:20:312
249699485,6cyclictest41-21ksoftirqd/323:00:213
249699484,2cyclictest41-21ksoftirqd/319:15:223
2496994832,9cyclictest41-21ksoftirqd/300:30:003
249699482,7cyclictest0-21swapper/321:35:183
2495994834,12cyclictest33-21ksoftirqd/223:30:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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