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2026-01-11 - 01:11
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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 Jan 10, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2906421310,4sleep1568999cyclictest11:25:241
299742850,3sleep20-21swapper/209:10:182
569099690,34cyclictest3647-21/usr/sbin/munin09:25:222
134491640,4ptp4l0-21swapper/308:41:463
134491640,29ptp4l9-21ksoftirqd/008:40:210
134491620,24ptp4l0-21swapper/009:55:180
134491600,3ptp4l0-21swapper/307:45:163
134491590,4ptp4l0-21swapper/208:46:182
134491580,4ptp4l0-21swapper/311:35:113
134491580,3ptp4l0-21swapper/307:52:103
134491580,3ptp4l0-21swapper/211:49:562
134491580,3ptp4l0-21swapper/211:29:532
134491580,11ptp4l0-21swapper/111:55:181
569099572,2cyclictest0-21swapper/210:20:262
134491570,5ptp4l569199cyclictest08:30:063
134491570,4ptp4l0-21swapper/211:03:322
134491570,3ptp4l0-21swapper/308:00:273
569099561,4cyclictest4743-21ntp_states08:15:222
569099561,4cyclictest4743-21ntp_states08:15:222
134491560,4ptp4l17030-21ntp_states11:00:233
134491560,4ptp4l0-21swapper/307:55:223
134491560,4ptp4l0-21swapper/211:54:232
134491560,4ptp4l0-21swapper/209:30:342
134491560,4ptp4l0-21swapper/209:30:342
134491560,3ptp4l0-21swapper/310:30:113
134491560,3ptp4l0-21swapper/210:46:392
134491560,3ptp4l0-21swapper/207:53:102
134491550,4ptp4l0-21swapper/310:00:293
134491550,4ptp4l0-21swapper/012:29:070
134491540,4ptp4l0-21swapper/309:21:553
134491540,4ptp4l0-21swapper/308:57:173
134491540,4ptp4l0-21swapper/111:45:061
134491540,4ptp4l0-21swapper/011:52:540
134491540,3ptp4l0-21swapper/311:29:123
134491540,3ptp4l0-21swapper/308:15:043
134491540,3ptp4l0-21swapper/308:15:033
134491540,3ptp4l0-21swapper/212:21:552
569099530,34cyclictest134491ptp4l10:30:232
134491530,4ptp4l0-21swapper/107:46:301
134491530,3ptp4l0-21swapper/308:10:113
134491530,3ptp4l0-21swapper/307:40:093
134491530,10ptp4l0-21swapper/008:52:020
569099521,3cyclictest24928-21apt-get12:30:032
134491520,9ptp4l3352-21apt-get07:05:122
134491510,4ptp4l0-21swapper/312:32:453
134491510,4ptp4l0-21swapper/309:51:353
134491510,4ptp4l0-21swapper/007:09:100
134491510,18ptp4l0-21swapper/211:55:162
230642500,5sleep30-21swapper/312:25:163
134491500,7ptp4l0-21swapper/010:46:450
134491500,4ptp4l0-21swapper/312:16:433
134491500,4ptp4l0-21swapper/312:04:013
134491500,4ptp4l0-21swapper/311:07:323
134491500,3ptp4l0-21swapper/312:05:143
134491500,3ptp4l0-21swapper/311:32:413
134491500,3ptp4l0-21swapper/211:19:422
134491490,6ptp4l0-21swapper/009:30:120
134491490,6ptp4l0-21swapper/009:30:120
134491490,4ptp4l0-21swapper/207:55:542
134491490,4ptp4l0-21swapper/010:08:000
134491490,3ptp4l0-21swapper/309:01:013
569099480,20cyclictest134491ptp4l10:12:542
134491480,4ptp4l0-21swapper/308:53:403
134491480,3ptp4l0-21swapper/309:39:233
134491480,3ptp4l0-21swapper/309:39:233
134491480,3ptp4l0-21swapper/210:07:402
134491470,5ptp4l0-21swapper/307:28:483
134491470,4ptp4l0-21swapper/311:12:213
134491470,4ptp4l0-21swapper/310:24:163
134491470,4ptp4l0-21swapper/310:05:313
134491470,4ptp4l0-21swapper/307:24:063
134491470,4ptp4l0-21swapper/307:24:063
134491470,4ptp4l0-21swapper/109:34:311
134491470,4ptp4l0-21swapper/109:34:301
134491470,3ptp4l0-21swapper/007:33:400
134491460,4ptp4l0-21swapper/310:43:033
134491460,4ptp4l0-21swapper/310:43:033
134491460,4ptp4l0-21swapper/009:44:400
134491460,3ptp4l0-21swapper/209:05:512
134491460,13ptp4l11112-21latency_hist10:50:001
568899450,3cyclictest134491ptp4l12:20:000
134491450,9ptp4l0-21swapper/209:53:352
134491450,4ptp4l21541-21ls11:10:210
134491450,4ptp4l0-21swapper/308:35:393
134491450,3ptp4l0-21swapper/312:35:273
134491450,3ptp4l0-21swapper/310:55:233
134491450,3ptp4l0-21swapper/209:46:182
134491450,11ptp4l0-21swapper/109:28:161
134491440,5ptp4l0-21swapper/011:35:110
134491440,4ptp4l29529-21apt-get10:20:111
134491440,4ptp4l0-21swapper/310:39:273
134491440,3ptp4l0-21swapper/207:49:142
134491430,9ptp4l0-21swapper/009:10:340
134491430,6ptp4l4191-21iostat08:15:181
134491430,6ptp4l4191-21iostat08:15:171
134491430,5ptp4l552-21meminfo10:25:181
134491430,5ptp4l0-21swapper/308:20:123
134491430,4ptp4l0-21swapper/207:12:162
134491430,4ptp4l0-21swapper/111:50:121
134491430,4ptp4l0-21swapper/109:56:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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