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2026-05-15 - 18:26
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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 May 15, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491620,17ptp4l0-21swapper/008:25:170
134491600,3ptp4l0-21swapper/308:20:243
134491580,4ptp4l0-21swapper/112:35:151
134491570,3ptp4l26802-21apt-get07:15:130
134491570,3ptp4l1341-21ls12:05:210
134491560,4ptp4l0-21swapper/111:00:141
134491560,3ptp4l0-21swapper/112:00:131
134491560,3ptp4l0-21swapper/109:45:191
134491550,4ptp4l28541-21processes10:45:240
134491550,4ptp4l0-21swapper/011:23:290
134491550,3ptp4l0-21swapper/007:32:150
134491540,3ptp4l0-21swapper/207:27:352
134491530,4ptp4l0-21swapper/012:15:150
134491530,4ptp4l0-21swapper/012:15:150
134491530,3ptp4l0-21swapper/308:55:253
134491530,15ptp4l12520-21ls10:10:283
134491520,5ptp4l0-21swapper/007:08:350
134491520,4ptp4l0-21swapper/112:29:301
134491520,4ptp4l0-21swapper/008:01:120
134491520,4ptp4l0-21swapper/007:55:450
134491520,4ptp4l0-21swapper/007:55:450
134491520,3ptp4l0-21swapper/107:15:261
134491510,4ptp4l0-21swapper/209:36:162
134491510,4ptp4l0-21swapper/110:26:291
134491510,4ptp4l0-21swapper/107:28:431
134491510,4ptp4l0-21swapper/009:28:430
134491510,3ptp4l0-21swapper/209:25:502
134491510,3ptp4l0-21swapper/112:34:511
134491510,3ptp4l0-21swapper/011:52:330
134491510,3ptp4l0-21swapper/011:16:370
134491510,2ptp4l22340-21/usr/sbin/munin08:15:200
134491510,10ptp4l22873-21meminfo07:05:191
134491500,4ptp4l0-21swapper/209:56:462
134491500,4ptp4l0-21swapper/108:33:451
134491500,4ptp4l0-21swapper/012:30:430
134491500,4ptp4l0-21swapper/010:15:570
134491500,4ptp4l0-21swapper/009:30:230
134491500,4ptp4l0-21swapper/009:30:230
134491500,3ptp4l0-21swapper/208:20:262
134491500,3ptp4l0-21swapper/009:43:060
134491490,4ptp4l0-21swapper/112:08:351
134491490,4ptp4l0-21swapper/010:44:090
134491490,4ptp4l0-21swapper/008:06:160
134491490,3ptp4l0-21swapper/208:57:522
134491490,3ptp4l0-21swapper/012:04:420
134491480,4ptp4l0-21swapper/109:52:431
134491480,4ptp4l0-21swapper/011:43:480
134491480,4ptp4l0-21swapper/007:20:310
134491480,3ptp4l0-21swapper/112:10:271
134491480,3ptp4l0-21swapper/108:19:491
134491480,3ptp4l0-21swapper/007:13:070
24260994732,13cyclictest33-21ksoftirqd/211:15:292
2426099471,44cyclictest0-21swapper/208:15:192
134491470,4ptp4l0-21swapper/107:43:421
134491470,4ptp4l0-21swapper/007:28:170
134491470,3ptp4l0-21swapper/008:42:380
134491460,9ptp4l15781-21apt-get10:20:113
134491460,3ptp4l0-21swapper/108:37:171
134491460,11ptp4l0-21swapper/310:51:433
134491450,5ptp4l0-21swapper/012:25:190
134491450,4ptp4l0-21swapper/212:35:002
134491450,4ptp4l0-21swapper/011:30:120
134491450,4ptp4l0-21swapper/008:23:100
134491450,4ptp4l0-21swapper/007:39:380
134491450,3ptp4l0-21swapper/110:00:411
134491450,3ptp4l0-21swapper/008:35:290
134491440,9ptp4l0-21swapper/209:11:122
134491440,9ptp4l0-21swapper/011:27:110
134491440,9ptp4l0-21swapper/011:06:370
134491440,4ptp4l0-21swapper/009:18:580
134491440,3ptp4l0-21swapper/109:22:021
134491440,3ptp4l0-21swapper/109:05:091
134491440,2ptp4l0-21swapper/011:58:200
134491440,11ptp4l0-21swapper/310:38:403
134491440,11ptp4l0-21swapper/007:45:160
134491440,10ptp4l0-21swapper/212:37:422
134491440,10ptp4l0-21swapper/110:55:131
134491440,10ptp4l0-21swapper/110:55:131
134491430,9ptp4l0-21swapper/308:47:093
134491430,9ptp4l0-21swapper/210:20:502
134491430,9ptp4l0-21swapper/208:45:102
134491430,9ptp4l0-21swapper/208:37:412
134491430,5ptp4l0-21swapper/212:25:112
134491430,4ptp4l14248-21apt-get12:35:100
134491430,3ptp4l0-21swapper/210:29:442
134491430,3ptp4l0-21swapper/107:33:151
134491430,3ptp4l0-21swapper/007:40:530
134491430,10ptp4l0-21swapper/207:24:352
2426099424,36cyclictest3768-21kworker/2:007:45:282
24260994237,3cyclictest33-21ksoftirqd/209:55:012
24259994237,3cyclictest15328-21basename10:20:001
134491420,9ptp4l0-21swapper/212:17:112
134491420,9ptp4l0-21swapper/212:17:102
134491420,9ptp4l0-21swapper/210:43:052
134491420,9ptp4l0-21swapper/207:10:572
134491420,8ptp4l0-21swapper/212:20:122
134491420,5ptp4l553-21ntp_states10:55:223
134491420,5ptp4l553-21ntp_states10:55:223
134491420,4ptp4l8697-21apt-get08:55:111
134491420,4ptp4l21011-21apt-get11:40:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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