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2026-06-19 - 23:02
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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 Jun 19, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2344421630,4sleep2826099cyclictest07:40:232
183602700,4sleep10-21swapper/111:00:001
8259996928,10cyclictest25-21ksoftirqd/108:20:191
8259996729,7cyclictest25-21ksoftirqd/107:55:171
134491660,4ptp4l0-21swapper/009:09:530
8259996428,4cyclictest25-21ksoftirqd/111:45:131
8259996424,3cyclictest25-21ksoftirqd/111:40:231
8259996331,6cyclictest25-21ksoftirqd/109:49:591
8259996331,4cyclictest25-21ksoftirqd/110:15:161
8259996329,4cyclictest25-21ksoftirqd/107:20:251
8259996328,7cyclictest25-21ksoftirqd/111:20:001
8259996228,9cyclictest25-21ksoftirqd/112:10:181
8259996226,9cyclictest25-21ksoftirqd/107:50:161
134491620,3ptp4l25739-21ntp_states07:45:233
8259996122,10cyclictest25-21ksoftirqd/107:30:241
8259996028,8cyclictest25-21ksoftirqd/110:45:181
8259996028,6cyclictest25-21ksoftirqd/110:00:191
8259996026,4cyclictest25-21ksoftirqd/109:10:161
134491600,3ptp4l15616-21df07:25:110
134491600,3ptp4l0-21swapper/109:20:051
134491590,4ptp4l0-21swapper/212:05:372
8259995824,8cyclictest25-21ksoftirqd/111:00:261
8259995824,4cyclictest25-21ksoftirqd/107:15:001
134491580,4ptp4l0-21swapper/011:29:220
134491580,3ptp4l0-21swapper/210:51:212
134491580,3ptp4l0-21swapper/108:26:081
134491580,3ptp4l0-21swapper/010:40:230
8259995727,8cyclictest25-21ksoftirqd/108:55:131
8259995724,4cyclictest25-21ksoftirqd/110:20:271
134491570,3ptp4l0-21swapper/210:20:042
8259995624,7cyclictest25-21ksoftirqd/111:05:011
134491560,4ptp4l0-21swapper/209:41:592
134491560,3ptp4l0-21swapper/011:10:170
8259995522,7cyclictest25-21ksoftirqd/111:25:251
8259995516,8cyclictest25-21ksoftirqd/112:00:171
134491550,4ptp4l0-21swapper/007:20:450
134491550,12ptp4l0-21swapper/210:19:252
825999544,9cyclictest25-21ksoftirqd/111:55:161
825999544,9cyclictest25-21ksoftirqd/111:55:161
8259995423,8cyclictest25-21ksoftirqd/107:10:271
8259995418,6cyclictest25-21ksoftirqd/112:30:271
8259995416,6cyclictest25-21ksoftirqd/112:27:161
134491540,3ptp4l0-21swapper/111:32:221
134491540,3ptp4l0-21swapper/009:30:310
134491540,3ptp4l0-21swapper/008:30:270
134491540,3ptp4l0-21swapper/008:30:270
134491530,4ptp4l0-21swapper/310:42:343
134491530,4ptp4l0-21swapper/208:53:542
134491530,4ptp4l0-21swapper/011:31:430
825999527,4cyclictest28021-21/usr/sbin/munin11:20:191
825999525,8cyclictest25-21ksoftirqd/109:55:161
825999525,7cyclictest25-21ksoftirqd/112:05:141
825999523,6cyclictest25-21ksoftirqd/110:40:001
8259995217,7cyclictest25-21ksoftirqd/110:10:151
134491520,4ptp4l0-21swapper/312:21:273
134491520,4ptp4l0-21swapper/311:15:453
134491520,4ptp4l0-21swapper/310:16:353
134491520,4ptp4l0-21swapper/208:00:102
134491520,4ptp4l0-21swapper/109:30:221
134491520,4ptp4l0-21swapper/011:39:510
134491520,4ptp4l0-21swapper/010:00:170
825999506,3cyclictest25-21ksoftirqd/109:40:131
825999505,7cyclictest25-21ksoftirqd/112:20:261
825999503,7cyclictest25-21ksoftirqd/108:45:261
825999500,6cyclictest25-21ksoftirqd/109:15:131
134491500,5ptp4l0-21swapper/309:51:103
134491500,4ptp4l0-21swapper/212:20:142
134491500,3ptp4l0-21swapper/110:27:581
134491500,11ptp4l0-21swapper/211:00:222
134491500,10ptp4l0-21swapper/209:38:072
825999496,7cyclictest25-21ksoftirqd/107:25:111
825999493,3cyclictest121rcu_preempt08:10:111
825999490,6cyclictest24494-21awk11:10:211
134491490,9ptp4l7744-21lsb_release07:07:170
134491490,4ptp4l0-21swapper/210:42:122
134491490,4ptp4l0-21swapper/112:18:421
134491490,4ptp4l0-21swapper/011:57:500
134491490,4ptp4l0-21swapper/011:57:500
134491490,4ptp4l0-21swapper/008:51:430
134491490,3ptp4l0-21swapper/210:32:312
134491490,3ptp4l0-21swapper/111:35:371
825999486,5cyclictest25-21ksoftirqd/108:00:121
825999485,6cyclictest25-21ksoftirqd/107:35:251
825999483,8cyclictest25-21ksoftirqd/110:30:271
825999483,8cyclictest25-21ksoftirqd/109:05:141
825999482,7cyclictest25-21ksoftirqd/110:10:001
825999481,7cyclictest25-21ksoftirqd/109:40:001
134491480,8ptp4l7623-21cat07:07:131
134491480,4ptp4l0-21swapper/311:04:403
134491480,4ptp4l0-21swapper/309:25:203
134491480,4ptp4l0-21swapper/010:49:080
134491480,4ptp4l0-21swapper/009:22:410
134491480,3ptp4l0-21swapper/309:07:043
134491480,3ptp4l0-21swapper/307:44:403
134491480,3ptp4l0-21swapper/012:31:040
825999476,5cyclictest25-21ksoftirqd/111:50:281
8259994737,3cyclictest25-21ksoftirqd/110:45:001
8259994737,3cyclictest25-21ksoftirqd/109:50:251
825999473,3cyclictest121rcu_preempt09:25:151
134491470,5ptp4l0-21swapper/309:20:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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