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2026-09-22 - 21:41
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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 rackdslot4.osadl.org (updated Tue Sep 22, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65862214168,36sleep10-21swapper/107:07:141
138591210164,34phc2sys0-21swapper/307:07:543
65872201168,22sleep20-21swapper/207:07:162
66472199165,22sleep00-21swapper/007:08:030
1895221700,7sleep2725999cyclictest10:50:002
1895221700,7sleep2725999cyclictest10:50:002
135191930,6getstats0-21swapper/308:22:123
135191690,8getstats0-21swapper/308:17:123
122482670,2sleep10-21swapper/111:40:181
244292620,1sleep00-21swapper/007:45:010
138491580,1ptp4l401ktimersoftd/312:14:343
138491570,1ptp4l401ktimersoftd/308:00:053
138491560,1ptp4l401ktimersoftd/311:52:433
138491550,1ptp4l401ktimersoftd/310:33:413
725699540,15cyclictest8433-21systemctl09:20:250
725699510,11cyclictest9503-21/usr/sbin/munin08:20:200
725699491,14cyclictest12275-21apt-get07:20:110
725699490,15cyclictest0-21swapper/009:45:130
725699490,12cyclictest11529-21apt-get11:40:110
725699481,8cyclictest28682-21ls07:50:260
725699480,17cyclictest6506-21taskset09:17:350
135191470,1getstats13350irq/39-mmc108:27:133
7260994641,3cyclictest9566-21awk07:15:003
725699452,7cyclictest21819-21apt-get08:45:130
725699440,12cyclictest20785-21ssh10:50:290
725699430,9cyclictest30444-21mailstats12:15:240
725699420,17cyclictest6447-21apt-get10:25:040
138491420,1ptp4l401ktimersoftd/311:02:283
138491410,1ptp4l401ktimersoftd/308:56:503
725699400,8cyclictest32236-21perl09:05:150
725699390,15cyclictest2315-21gnome-shell11:33:590
7260993832,3cyclictest21101-21cron12:00:013
7260993731,4cyclictest41-21ksoftirqd/312:36:443
7260993730,4cyclictest41-21ksoftirqd/309:59:183
7259993731,4cyclictest33-21ksoftirqd/211:34:212
7259993731,4cyclictest33-21ksoftirqd/210:42:142
7259993731,4cyclictest33-21ksoftirqd/208:48:002
7259993710,26cyclictest0-21swapper/208:20:232
725999370,36cyclictest0-21swapper/212:15:232
7258993731,4cyclictest25-21ksoftirqd/111:22:531
7258993731,4cyclictest25-21ksoftirqd/108:16:381
725899370,35cyclictest0-21swapper/108:21:031
7256993731,4cyclictest9285-21idleruntime-cro08:20:010
7260993630,4cyclictest41-21ksoftirqd/311:49:313
7260993630,4cyclictest41-21ksoftirqd/310:17:363
7260993630,4cyclictest41-21ksoftirqd/310:12:543
7260993629,4cyclictest41-21ksoftirqd/309:14:053
7259993631,3cyclictest33-21ksoftirqd/208:03:552
7259993630,4cyclictest33-21ksoftirqd/210:29:322
7259993630,4cyclictest33-21ksoftirqd/210:12:302
7259993630,4cyclictest33-21ksoftirqd/209:51:512
7259993630,4cyclictest33-21ksoftirqd/209:27:362
7259993630,4cyclictest33-21ksoftirqd/208:11:392
7259993630,4cyclictest33-21ksoftirqd/207:42:102
7258993630,4cyclictest25-21ksoftirqd/110:15:451
7258993630,4cyclictest25-21ksoftirqd/108:44:101
7258993630,4cyclictest25-21ksoftirqd/108:27:581
7258993630,4cyclictest25-21ksoftirqd/107:23:561
7258993630,4cyclictest25-21ksoftirqd/107:18:011
7258993629,5cyclictest25-21ksoftirqd/109:13:151
7258993629,4cyclictest21484-21cron09:50:001
7256993630,4cyclictest9-21ksoftirqd/011:38:040
7256993630,4cyclictest9-21ksoftirqd/009:00:100
725699360,8cyclictest12527-21iostat_ios10:35:170
50798360,2rtkit-daemon506-21rtkit-daemon08:50:431
7260993530,3cyclictest41-21ksoftirqd/309:24:003
7260993529,4cyclictest41-21ksoftirqd/312:19:433
7260993529,4cyclictest41-21ksoftirqd/312:07:083
7260993529,4cyclictest41-21ksoftirqd/310:54:593
7260993529,4cyclictest41-21ksoftirqd/310:22:013
7260993529,4cyclictest41-21ksoftirqd/309:29:583
7260993529,4cyclictest41-21ksoftirqd/309:17:183
7260993529,4cyclictest41-21ksoftirqd/308:11:113
7260993529,4cyclictest41-21ksoftirqd/307:59:393
7260993529,3cyclictest41-21ksoftirqd/307:55:013
7259993529,4cyclictest33-21ksoftirqd/210:52:412
7259993529,4cyclictest33-21ksoftirqd/210:34:402
7259993529,4cyclictest33-21ksoftirqd/210:04:152
7259993529,4cyclictest33-21ksoftirqd/209:05:592
7259993529,4cyclictest33-21ksoftirqd/208:16:082
7259993529,4cyclictest33-21ksoftirqd/207:10:332
7259993528,4cyclictest33-21ksoftirqd/211:24:592
7258993529,4cyclictest25-21ksoftirqd/108:56:271
7256993529,4cyclictest9-21ksoftirqd/012:06:590
7256993529,4cyclictest9-21ksoftirqd/009:10:100
7256993529,4cyclictest9-21ksoftirqd/008:53:280
7260993430,2cyclictest41-21ksoftirqd/309:45:003
7260993429,3cyclictest41-21ksoftirqd/307:22:253
7260993428,4cyclictest41-21ksoftirqd/311:33:303
7260993428,4cyclictest41-21ksoftirqd/311:29:413
7260993428,4cyclictest41-21ksoftirqd/311:21:373
7260993428,4cyclictest41-21ksoftirqd/309:38:373
7260993428,4cyclictest41-21ksoftirqd/309:07:193
7260993428,4cyclictest41-21ksoftirqd/308:36:383
7259993428,4cyclictest33-21ksoftirqd/212:30:422
7259993428,4cyclictest33-21ksoftirqd/211:43:242
7259993428,4cyclictest33-21ksoftirqd/211:27:232
7259993428,4cyclictest33-21ksoftirqd/211:14:552
7259993428,4cyclictest33-21ksoftirqd/211:08:542
7259993428,4cyclictest33-21ksoftirqd/211:04:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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