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2026-07-04 - 23:28
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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 Sat Jul 04, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
333421770,5sleep10-21swapper/107:05:201
134491670,3ptp4l0-21swapper/007:10:040
134491670,3ptp4l0-21swapper/007:10:040
134491620,4ptp4l13213-21memory10:55:220
134691610,2getstats0-21swapper/011:35:180
480899583,15cyclictest24973-21cat09:00:281
134491580,4ptp4l0-21swapper/209:48:422
134491580,4ptp4l0-21swapper/112:05:211
134491580,4ptp4l0-21swapper/011:19:250
134491580,3ptp4l0-21swapper/310:45:303
134491580,3ptp4l0-21swapper/309:28:013
134491580,3ptp4l0-21swapper/212:05:182
134491570,4ptp4l0-21swapper/312:20:313
134491570,4ptp4l0-21swapper/208:39:262
134491570,4ptp4l0-21swapper/107:25:241
134491570,3ptp4l0-21swapper/108:55:251
134491560,4ptp4l0-21swapper/212:23:192
134491560,4ptp4l0-21swapper/210:55:122
134491560,4ptp4l0-21swapper/210:54:402
134491560,3ptp4l0-21swapper/010:27:240
480899555,12cyclictest10594-21ls12:00:171
480899550,11cyclictest12525-21grep09:45:161
134491550,4ptp4l0-21swapper/208:09:012
134491550,4ptp4l0-21swapper/012:28:280
134491550,3ptp4l0-21swapper/112:15:151
134491550,3ptp4l0-21swapper/108:39:531
85412530,4sleep10-21swapper/107:15:271
480899530,11cyclictest7413-21awk08:25:131
134491530,4ptp4l0-21swapper/308:23:203
134491530,4ptp4l0-21swapper/208:46:532
134491530,4ptp4l0-21swapper/010:20:050
134491530,4ptp4l0-21swapper/009:11:400
134491530,4ptp4l0-21swapper/008:41:400
134491530,3ptp4l0-21swapper/007:25:220
134491530,2ptp4l0-21swapper/012:07:440
480899528,7cyclictest0-21swapper/112:35:141
480899527,10cyclictest0-21swapper/111:50:171
480899526,7cyclictest0-21swapper/109:35:111
480899521,12cyclictest15797-21sed08:40:271
480899521,10cyclictest0-21swapper/111:00:001
480899521,10cyclictest0-21swapper/111:00:001
134491520,6ptp4l0-21swapper/007:08:100
134491520,4ptp4l0-21swapper/312:14:243
134491520,4ptp4l0-21swapper/310:23:373
134491520,4ptp4l0-21swapper/309:30:503
134491520,4ptp4l0-21swapper/212:00:282
134491520,4ptp4l0-21swapper/011:25:540
134491520,4ptp4l0-21swapper/009:30:230
134491520,3ptp4l0-21swapper/308:05:163
134491520,3ptp4l0-21swapper/012:18:110
134491520,3ptp4l0-21swapper/011:10:190
480899516,6cyclictest30391-21latency_hist09:15:011
134491510,4ptp4l0-21swapper/307:28:063
134491500,4ptp4l0-21swapper/209:24:332
134491500,4ptp4l0-21swapper/010:53:220
134491500,4ptp4l0-21swapper/009:54:200
134491500,4ptp4l0-21swapper/007:56:090
134491490,5ptp4l33-21ksoftirqd/208:29:482
134491490,5ptp4l0-21swapper/010:03:130
134491490,4ptp4l0-21swapper/207:58:432
134491490,4ptp4l0-21swapper/012:31:080
134491490,4ptp4l0-21swapper/010:31:160
134491490,4ptp4l0-21swapper/009:00:120
134491490,4ptp4l0-21swapper/008:12:450
134491490,3ptp4l0-21swapper/009:41:170
480899487,8cyclictest0-21swapper/108:15:241
480899483,11cyclictest0-21swapper/111:20:381
134491480,4ptp4l0-21swapper/212:10:332
134491480,4ptp4l0-21swapper/009:15:230
134491480,4ptp4l0-21swapper/008:36:250
134491480,3ptp4l0-21swapper/011:20:370
134491480,3ptp4l0-21swapper/009:20:350
134491480,3ptp4l0-21swapper/007:35:170
134491470,6ptp4l33-21ksoftirqd/211:08:582
134491470,4ptp4l0-21swapper/312:32:233
134491470,4ptp4l0-21swapper/007:44:300
134491470,4ptp4l0-21swapper/007:33:160
134491470,3ptp4l0-21swapper/111:40:201
134491470,11ptp4l0-21swapper/207:15:202
480899468,6cyclictest0-21swapper/107:55:241
480899463,6cyclictest9749-21df_abs07:20:131
134491460,9ptp4l17826-21ntp_states09:55:223
134491460,7ptp4l0-21swapper/010:37:520
134491460,4ptp4l6301-21awk10:40:250
4810994534,9cyclictest33-21ksoftirqd/212:15:282
134491450,4ptp4l0-21swapper/312:05:313
134491450,4ptp4l0-21swapper/310:34:053
134491450,4ptp4l0-21swapper/307:36:273
134491450,4ptp4l0-21swapper/009:45:130
134491450,3ptp4l0-21swapper/208:20:592
134491450,3ptp4l0-21swapper/012:38:560
4810994439,3cyclictest33-21ksoftirqd/210:40:002
134491440,9ptp4l10024-21latency_hist12:00:003
134491440,9ptp4l0-21swapper/010:48:060
134491440,6ptp4l17521-21meminfo08:45:210
134491440,5ptp4l0-21swapper/308:15:123
134491440,4ptp4l23313-21apt-get07:50:112
134491440,4ptp4l0-21swapper/307:10:323
134491440,4ptp4l0-21swapper/307:10:323
134491440,3ptp4l7362-21apt-get08:25:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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