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2026-01-09 - 23:01
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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 Jan 09, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311482740,5sleep00-21swapper/011:55:010
27595996423,8cyclictest33-21ksoftirqd/210:49:562
27595996329,4cyclictest33-21ksoftirqd/211:59:592
27595996328,8cyclictest33-21ksoftirqd/209:40:002
134491630,6ptp4l0-21swapper/107:05:191
134491630,4ptp4l21356-21apt08:05:091
134491610,4ptp4l8640-21/usr/sbin/munin12:15:130
134491600,6ptp4l0-21swapper/007:09:540
134491580,4ptp4l0-21swapper/108:51:321
134491580,3ptp4l0-21swapper/209:49:142
134491580,3ptp4l0-21swapper/108:25:061
134491570,4ptp4l0-21swapper/309:38:493
134491570,4ptp4l0-21swapper/107:20:411
134491570,3ptp4l0-21swapper/109:53:051
134491570,13ptp4l0-21swapper/010:25:170
134491560,4ptp4l0-21swapper/110:15:251
27595995524,5cyclictest33-21ksoftirqd/209:34:032
27595995523,6cyclictest33-21ksoftirqd/207:35:282
27595995522,4cyclictest33-21ksoftirqd/208:00:222
27595995424,3cyclictest33-21ksoftirqd/212:00:142
27595995423,10cyclictest33-21ksoftirqd/208:37:052
27595995420,5cyclictest33-21ksoftirqd/211:35:002
134491540,4ptp4l0-21swapper/109:21:101
134491540,3ptp4l0-21swapper/111:06:341
134491540,3ptp4l0-21swapper/007:53:200
134491540,22ptp4l0-21swapper/011:32:300
134491530,4ptp4l0-21swapper/109:01:071
134491530,4ptp4l0-21swapper/008:10:530
134491530,3ptp4l5391-21df08:40:131
134491530,3ptp4l0-21swapper/210:05:262
134491530,3ptp4l0-21swapper/012:25:000
134491530,3ptp4l0-21swapper/008:28:170
27595995217,6cyclictest33-21ksoftirqd/208:20:242
134491520,4ptp4l0-21swapper/112:34:361
134491520,4ptp4l0-21swapper/011:22:490
134491520,4ptp4l0-21swapper/007:13:080
134491520,4ptp4l0-21swapper/007:13:080
134491520,3ptp4l0-21swapper/108:30:101
27595995122,8cyclictest33-21ksoftirqd/207:47:522
134491510,4ptp4l0-21swapper/008:07:130
134491510,4ptp4l0-21swapper/007:44:500
134491510,4ptp4l0-21swapper/007:23:180
134491510,3ptp4l0-21swapper/212:10:192
134491510,3ptp4l0-21swapper/111:46:181
134491510,3ptp4l0-21swapper/108:16:051
2759599509,6cyclictest33-21ksoftirqd/207:55:262
27595995022,8cyclictest33-21ksoftirqd/208:43:392
27595995022,3cyclictest33-21ksoftirqd/211:25:252
27595995020,3cyclictest33-21ksoftirqd/211:50:262
27595995017,5cyclictest33-21ksoftirqd/209:05:212
134491500,4ptp4l0-21swapper/108:45:131
134491500,3ptp4l0-21swapper/008:03:290
134491500,11ptp4l0-21swapper/010:21:010
27596994929,17cyclictest41-21ksoftirqd/311:20:003
27595994924,5cyclictest33-21ksoftirqd/210:29:182
27595994923,6cyclictest33-21ksoftirqd/209:52:292
27595994921,7cyclictest33-21ksoftirqd/211:05:012
27595994921,3cyclictest33-21ksoftirqd/211:15:182
27595994920,6cyclictest33-21ksoftirqd/210:40:242
27595994919,4cyclictest33-21ksoftirqd/212:30:162
27595994914,5cyclictest33-21ksoftirqd/207:15:262
134491490,3ptp4l0-21swapper/211:05:202
134491490,3ptp4l0-21swapper/009:10:070
27595994816,6cyclictest33-21ksoftirqd/210:25:002
27595994815,6cyclictest33-21ksoftirqd/210:00:172
134491480,4ptp4l0-21swapper/212:29:282
134491480,4ptp4l0-21swapper/208:09:162
134491480,3ptp4l0-21swapper/310:35:103
134491480,3ptp4l0-21swapper/111:24:011
134491480,3ptp4l0-21swapper/008:16:470
134491480,10ptp4l0-21swapper/108:55:201
2759699473,42cyclictest0-21swapper/311:06:593
2759599473,2cyclictest121rcu_preempt11:45:002
27595994714,5cyclictest33-21ksoftirqd/211:20:152
27595994714,4cyclictest33-21ksoftirqd/207:10:242
27595994714,4cyclictest33-21ksoftirqd/207:10:242
134491470,4ptp4l0-21swapper/111:25:201
134491470,3ptp4l0-21swapper/112:06:361
134491470,3ptp4l0-21swapper/110:14:041
27595994620,4cyclictest33-21ksoftirqd/212:35:132
27595994620,4cyclictest33-21ksoftirqd/207:25:202
27595994619,8cyclictest33-21ksoftirqd/209:19:422
27595994614,3cyclictest33-21ksoftirqd/211:35:172
27595994612,8cyclictest33-21ksoftirqd/210:10:192
134491460,4ptp4l0-21swapper/210:31:242
134491460,10ptp4l0-21swapper/312:14:163
134491460,10ptp4l0-21swapper/207:34:242
27595994532,11cyclictest33-21ksoftirqd/209:05:012
27595994510,3cyclictest33-21ksoftirqd/209:55:222
134491450,5ptp4l0-21swapper/309:45:223
134491450,5ptp4l0-21swapper/109:45:151
134491450,4ptp4l0-21swapper/112:27:001
134491450,4ptp4l0-21swapper/109:10:161
134491450,4ptp4l0-21swapper/010:39:090
134491450,4ptp4l0-21swapper/009:37:200
134491450,4ptp4l0-21swapper/007:33:150
134491450,3ptp4l0-21swapper/212:24:122
134491450,3ptp4l0-21swapper/112:19:241
134491450,3ptp4l0-21swapper/010:06:440
27595994439,3cyclictest33-21ksoftirqd/207:40:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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