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2026-03-19 - 17:19
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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 Thu Mar 19, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204312630,4sleep00-21swapper/008:50:160
134491620,3ptp4l7005-21memory09:30:202
134491590,4ptp4l0-21swapper/211:55:112
134491590,4ptp4l0-21swapper/207:05:162
134491590,3ptp4l0-21swapper/008:45:240
5876995825,7cyclictest25-21ksoftirqd/110:20:001
134491580,3ptp4l0-21swapper/210:56:352
134491580,3ptp4l0-21swapper/208:30:022
134491580,3ptp4l0-21swapper/207:48:132
134491580,3ptp4l0-21swapper/207:14:222
134491580,3ptp4l0-21swapper/011:50:220
5876995725,4cyclictest25-21ksoftirqd/111:50:171
134491560,3ptp4l0-21swapper/211:20:242
134491560,3ptp4l0-21swapper/210:00:212
134491560,3ptp4l0-21swapper/112:30:161
134491550,3ptp4l0-21swapper/210:46:362
5876995425,4cyclictest25-21ksoftirqd/109:00:341
5876995421,4cyclictest25-21ksoftirqd/107:57:361
134491540,3ptp4l0-21swapper/210:29:072
5876995323,3cyclictest25-21ksoftirqd/112:05:221
5876995319,4cyclictest25-21ksoftirqd/111:05:131
5876995318,7cyclictest25-21ksoftirqd/111:00:261
5876995318,7cyclictest25-21ksoftirqd/111:00:261
5876995318,7cyclictest25-21ksoftirqd/110:10:241
134491530,3ptp4l0-21swapper/211:40:462
134491530,18ptp4l0-21swapper/007:21:430
134491530,17ptp4l0-21swapper/011:24:570
5876995222,7cyclictest25-21ksoftirqd/111:55:131
134491520,4ptp4l0-21swapper/212:16:062
134491520,4ptp4l0-21swapper/209:21:022
134491520,4ptp4l0-21swapper/209:21:022
5876995123,4cyclictest25-21ksoftirqd/109:35:001
5876995119,8cyclictest25-21ksoftirqd/110:45:271
5876995117,9cyclictest25-21ksoftirqd/111:15:001
134491510,4ptp4l0-21swapper/110:04:211
134491510,4ptp4l0-21swapper/109:39:191
134491510,4ptp4l0-21swapper/108:48:111
134491510,3ptp4l0-21swapper/107:32:101
5876995018,8cyclictest25-21ksoftirqd/112:00:261
5876995014,8cyclictest25-21ksoftirqd/110:40:201
134491500,4ptp4l0-21swapper/212:29:542
134491500,4ptp4l0-21swapper/209:47:012
134491500,4ptp4l0-21swapper/208:50:482
134491500,4ptp4l0-21swapper/107:24:361
134491500,4ptp4l0-21swapper/107:15:081
134491500,4ptp4l0-21swapper/007:10:500
134491500,3ptp4l0-21swapper/209:43:112
5876994933,4cyclictest25-21ksoftirqd/107:15:001
5876994920,4cyclictest25-21ksoftirqd/111:29:091
5876994920,4cyclictest25-21ksoftirqd/110:51:341
5876994917,5cyclictest25-21ksoftirqd/111:42:161
5876994916,7cyclictest25-21ksoftirqd/110:55:141
5876994916,3cyclictest25-21ksoftirqd/109:23:201
5876994916,3cyclictest25-21ksoftirqd/109:23:201
134491490,4ptp4l0-21swapper/209:19:512
134491490,4ptp4l0-21swapper/207:30:582
134491490,4ptp4l0-21swapper/109:06:251
134491490,3ptp4l0-21swapper/107:50:211
5876994822,7cyclictest25-21ksoftirqd/109:58:161
5876994822,7cyclictest25-21ksoftirqd/109:58:151
5876994820,7cyclictest25-21ksoftirqd/112:35:111
5876994820,7cyclictest25-21ksoftirqd/110:25:181
5876994820,3cyclictest25-21ksoftirqd/111:15:241
5876994817,8cyclictest25-21ksoftirqd/110:35:271
5876994817,4cyclictest25-21ksoftirqd/111:20:121
5876994816,9cyclictest25-21ksoftirqd/110:25:001
5876994815,7cyclictest25-21ksoftirqd/111:50:011
5876994815,7cyclictest25-21ksoftirqd/107:25:141
5876994815,7cyclictest25-21ksoftirqd/107:25:141
134491480,4ptp4l0-21swapper/210:31:192
134491480,4ptp4l0-21swapper/210:31:192
134491480,4ptp4l0-21swapper/207:28:252
134491480,4ptp4l0-21swapper/207:28:252
134491480,11ptp4l0-21swapper/207:21:022
5876994723,7cyclictest25-21ksoftirqd/108:55:521
5876994719,7cyclictest25-21ksoftirqd/110:30:181
5876994719,7cyclictest25-21ksoftirqd/110:30:181
5876994719,3cyclictest25-21ksoftirqd/108:00:261
5876994718,7cyclictest25-21ksoftirqd/111:35:141
5876994717,3cyclictest25-21ksoftirqd/109:25:121
5876994715,4cyclictest25-21ksoftirqd/108:50:571
5876994713,3cyclictest25-21ksoftirqd/109:44:311
134491470,4ptp4l22435-21apt-get10:05:121
134491470,4ptp4l0-21swapper/309:34:563
134491470,4ptp4l0-21swapper/307:06:303
134491470,3ptp4l0-21swapper/108:10:241
134491470,3ptp4l0-21swapper/108:10:241
5876994622,7cyclictest25-21ksoftirqd/108:20:431
5876994614,7cyclictest25-21ksoftirqd/107:45:011
587699459,5cyclictest25-21ksoftirqd/112:15:151
5876994512,4cyclictest25-21ksoftirqd/111:33:501
134491450,9ptp4l0-21swapper/211:45:022
134491450,5ptp4l2318-21gnome-shell11:22:583
134491450,3ptp4l0-21swapper/209:35:302
134491450,3ptp4l0-21swapper/209:10:312
134491450,3ptp4l0-21swapper/108:38:321
134491450,2ptp4l0-21swapper/307:25:483
134491450,2ptp4l0-21swapper/307:25:483
5876994417,6cyclictest25-21ksoftirqd/108:30:271
5876994413,3cyclictest25-21ksoftirqd/109:52:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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