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2026-06-15 - 01:30
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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 Sun Jun 14, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2478621630,3sleep31389799cyclictest08:40:233
1389699771,2cyclictest0-21swapper/210:45:302
1389699771,2cyclictest0-21swapper/210:45:302
1389699702,3cyclictest0-21swapper/210:15:292
1389699701,67cyclictest0-21swapper/211:10:292
280162680,4sleep10-21swapper/109:55:281
1389699622,3cyclictest0-21swapper/209:00:282
134491600,5ptp4l5561-21apt-get11:30:033
134491580,20ptp4l0-21swapper/109:50:201
1389699571,54cyclictest0-21swapper/211:22:292
134491570,7ptp4l25-21ksoftirqd/107:35:151
134491570,4ptp4l0-21swapper/211:30:122
134491570,3ptp4l0-21swapper/307:20:293
134491570,3ptp4l0-21swapper/210:00:012
134491570,3ptp4l0-21swapper/110:05:301
134491570,13ptp4l0-21swapper/112:20:141
22512560,4sleep31389799cyclictest12:30:193
134491560,3ptp4l0-21swapper/209:32:512
134491550,3ptp4l0-21swapper/007:16:010
134491550,3ptp4l0-21swapper/007:16:010
289942540,2sleep128990-21phc2sys-jitter07:40:251
134491540,5ptp4l0-21swapper/110:40:291
134491540,4ptp4l0-21swapper/107:31:221
134491540,4ptp4l0-21swapper/011:53:560
134491540,3ptp4l0-21swapper/110:54:461
134491530,4ptp4l0-21swapper/108:54:031
134491530,4ptp4l0-21swapper/011:37:110
134491530,3ptp4l0-21swapper/010:49:350
134491530,3ptp4l0-21swapper/010:49:340
192412520,4sleep20-21swapper/208:30:162
134491520,4ptp4l0-21swapper/011:58:250
134491520,3ptp4l17579-21cat08:25:211
134491520,3ptp4l0-21swapper/009:56:410
134491520,12ptp4l0-21swapper/311:51:113
134491520,11ptp4l0-21swapper/209:40:152
134491510,4ptp4l0-21swapper/311:04:003
134491510,4ptp4l0-21swapper/012:26:590
134491510,4ptp4l0-21swapper/012:09:340
134491510,4ptp4l0-21swapper/012:09:340
134491510,4ptp4l0-21swapper/008:59:070
134491510,3ptp4l0-21swapper/109:46:261
134491510,3ptp4l0-21swapper/008:51:000
134491510,2ptp4l0-21swapper/109:04:501
134491500,4ptp4l0-21swapper/311:21:343
134491500,4ptp4l0-21swapper/308:46:253
134491500,4ptp4l0-21swapper/308:07:263
134491500,4ptp4l0-21swapper/112:33:501
134491500,4ptp4l0-21swapper/010:08:300
134491500,3ptp4l0-21swapper/111:29:101
134491500,3ptp4l0-21swapper/107:17:291
134491500,3ptp4l0-21swapper/107:17:291
134491500,3ptp4l0-21swapper/010:52:130
1389699492,46cyclictest0-21swapper/209:14:082
134491490,4ptp4l0-21swapper/311:39:143
134491490,4ptp4l0-21swapper/310:39:143
134491490,4ptp4l0-21swapper/308:26:073
134491490,4ptp4l0-21swapper/112:02:481
134491490,3ptp4l0-21swapper/011:02:350
1389699480,47cyclictest26983-21kworker/2:010:31:482
134491480,4ptp4l0-21swapper/109:25:021
134491480,4ptp4l0-21swapper/010:10:190
134491480,4ptp4l0-21swapper/010:00:050
134491480,4ptp4l0-21swapper/009:33:060
134491480,4ptp4l0-21swapper/008:16:590
134491470,4ptp4l0-21swapper/108:08:371
134491470,4ptp4l0-21swapper/007:06:340
134491470,3ptp4l7994-21/usr/sbin/munin09:15:201
134491470,3ptp4l0-21swapper/107:55:191
134491470,3ptp4l0-21swapper/012:20:300
134491460,5ptp4l25489-21apt-get07:35:122
134491460,4ptp4l0-21swapper/309:35:103
134491460,4ptp4l0-21swapper/111:14:081
134491460,4ptp4l0-21swapper/111:06:281
134491460,4ptp4l0-21swapper/108:42:271
134491460,4ptp4l0-21swapper/108:19:541
134491460,4ptp4l0-21swapper/007:49:500
134491460,3ptp4l0-21swapper/107:27:361
134491450,9ptp4l0-21swapper/008:11:180
134491450,4ptp4l13923-21apt-get07:10:112
1389699441,42cyclictest0-21swapper/210:39:292
134491440,9ptp4l0-21swapper/209:58:182
134491440,9ptp4l0-21swapper/108:12:041
134491440,5ptp4l24189-21apt-get09:50:130
134491440,5ptp4l0-21swapper/308:20:113
134491440,4ptp4l19690-21apt-get10:50:123
134491440,4ptp4l0-21swapper/112:36:291
134491440,3ptp4l0-21swapper/207:54:282
134491440,10ptp4l0-21swapper/307:48:163
1389799430,5cyclictest134691getstats11:50:003
13894994338,3cyclictest9-21ksoftirqd/007:14:590
134491430,9ptp4l0-21swapper/211:16:062
134491430,8ptp4l0-21swapper/211:09:182
134491430,7ptp4l1301-21snmpd11:24:090
134491430,5ptp4l2121-21ntp_states10:10:241
134491430,5ptp4l0-21swapper/011:05:150
134491430,4ptp4l0-21swapper/009:09:370
134491430,3ptp4l0-21swapper/308:38:213
134491430,3ptp4l0-21swapper/111:39:431
134491430,1ptp4l0-21swapper/207:32:422
134491430,10ptp4l0-21swapper/208:00:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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