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2026-04-20 - 09:34
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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 Mon Apr 20, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180232225197,18sleep10-21swapper/119:09:591
177662205170,23sleep00-21swapper/019:06:400
178502204171,22sleep20-21swapper/219:07:472
178512202167,23sleep30-21swapper/319:07:483
1478121720,5sleep01831799cyclictest23:20:210
699521270,6sleep21831999cyclictest00:10:172
1802528262,11sleep30-21swapper/319:10:013
1831999750,2cyclictest6292chrt21:48:292
138491650,1ptp4l401ktimersoftd/321:16:053
1831799578,10cyclictest18795-21sed19:10:140
1831999561,3cyclictest0-21swapper/220:01:172
138491550,1ptp4l401ktimersoftd/300:28:593
266612540,4sleep09-21ksoftirqd/020:30:200
18318994640,3cyclictest30740-21dump-pmu-power21:45:011
1831799454,8cyclictest22383-21sed22:30:260
50798440,2rtkit-daemon0-21swapper/122:45:061
18317994321,8cyclictest9-21ksoftirqd/019:44:500
138491430,1ptp4l401ktimersoftd/322:17:363
18320994136,2cyclictest41-21ksoftirqd/322:40:003
18317994121,9cyclictest9-21ksoftirqd/022:03:050
18320994035,3cyclictest41-21ksoftirqd/323:59:593
18319993933,4cyclictest33-21ksoftirqd/220:55:012
1831999391,2cyclictest82042sleep220:59:312
18320993833,3cyclictest41-21ksoftirqd/323:54:593
18320993833,3cyclictest41-21ksoftirqd/323:35:003
18320993832,4cyclictest41-21ksoftirqd/320:47:443
18319993832,4cyclictest33-21ksoftirqd/220:50:012
18318993822,13cyclictest25-21ksoftirqd/120:15:121
138491380,0ptp4l401ktimersoftd/321:10:133
18320993732,3cyclictest41-21ksoftirqd/319:30:193
18320993731,4cyclictest41-21ksoftirqd/319:53:283
18320993730,4cyclictest41-21ksoftirqd/322:13:453
18319993732,3cyclictest33-21ksoftirqd/220:20:122
18319993732,3cyclictest33-21ksoftirqd/220:20:122
1831999371,2cyclictest0-21swapper/223:31:182
18318993731,4cyclictest25-21ksoftirqd/122:20:121
18318993730,4cyclictest25-21ksoftirqd/123:33:371
1831799375,5cyclictest9-21ksoftirqd/021:55:070
18317993720,7cyclictest9-21ksoftirqd/021:09:210
18317993719,8cyclictest9-21ksoftirqd/022:10:460
18320993631,3cyclictest41-21ksoftirqd/321:00:003
18320993631,3cyclictest41-21ksoftirqd/319:36:183
18320993630,4cyclictest41-21ksoftirqd/319:27:413
18320993630,4cyclictest41-21ksoftirqd/300:07:103
18319993631,3cyclictest33-21ksoftirqd/200:33:422
18319993630,4cyclictest33-21ksoftirqd/221:22:212
18319993630,4cyclictest33-21ksoftirqd/219:54:562
18319993630,4cyclictest33-21ksoftirqd/219:37:152
18319993629,5cyclictest33-21ksoftirqd/222:19:182
1831999360,3cyclictest25737-21/usr/sbin/munin19:25:122
18318993631,3cyclictest25-21ksoftirqd/122:11:461
18318993630,4cyclictest25-21ksoftirqd/122:56:281
18318993630,4cyclictest25-21ksoftirqd/100:28:491
18318993629,5cyclictest25-21ksoftirqd/100:18:471
18317993629,5cyclictest9-21ksoftirqd/023:35:010
18320993530,3cyclictest41-21ksoftirqd/320:05:193
18320993529,4cyclictest41-21ksoftirqd/323:27:543
18320993529,4cyclictest41-21ksoftirqd/321:28:003
18320993529,4cyclictest41-21ksoftirqd/321:21:133
18320993529,4cyclictest41-21ksoftirqd/320:21:323
18320993529,4cyclictest41-21ksoftirqd/320:21:323
18319993530,3cyclictest33-21ksoftirqd/222:09:542
18319993529,4cyclictest33-21ksoftirqd/223:48:482
18319993529,4cyclictest33-21ksoftirqd/223:26:412
18319993529,4cyclictest33-21ksoftirqd/222:22:032
18319993529,4cyclictest33-21ksoftirqd/219:49:062
18319993529,4cyclictest33-21ksoftirqd/200:08:042
1831999350,2cyclictest6252sleep223:57:382
18318993530,3cyclictest25-21ksoftirqd/119:17:131
18318993529,4cyclictest25-21ksoftirqd/123:35:581
18317993530,3cyclictest9-21ksoftirqd/020:25:530
18317993520,8cyclictest9-21ksoftirqd/019:36:020
18317993517,8cyclictest9-21ksoftirqd/023:45:210
18320993430,3cyclictest41-21ksoftirqd/321:40:013
18320993429,3cyclictest41-21ksoftirqd/323:20:183
18320993429,3cyclictest41-21ksoftirqd/320:35:203
18320993429,3cyclictest41-21ksoftirqd/300:20:183
18320993428,4cyclictest41-21ksoftirqd/323:07:483
18320993428,4cyclictest41-21ksoftirqd/323:03:023
18320993428,4cyclictest41-21ksoftirqd/321:55:363
18320993428,4cyclictest41-21ksoftirqd/321:41:163
18320993428,4cyclictest41-21ksoftirqd/321:07:023
18320993428,4cyclictest41-21ksoftirqd/320:13:343
18320993428,4cyclictest41-21ksoftirqd/320:03:433
18320993428,4cyclictest41-21ksoftirqd/319:24:583
18320993428,3cyclictest41-21ksoftirqd/321:45:143
18320993416,16cyclictest41-21ksoftirqd/321:35:013
18319993429,3cyclictest33-21ksoftirqd/223:08:542
18319993428,4cyclictest33-21ksoftirqd/223:52:292
18319993428,4cyclictest33-21ksoftirqd/223:20:482
18319993428,4cyclictest33-21ksoftirqd/221:56:152
18319993428,4cyclictest33-21ksoftirqd/220:32:272
18319993428,4cyclictest33-21ksoftirqd/219:21:502
18319993427,4cyclictest33-21ksoftirqd/221:33:572
18319993415,16cyclictest23577-21df20:25:152
18319993415,16cyclictest17906-21grep21:15:262
18318993429,3cyclictest25-21ksoftirqd/119:20:521
18318993428,4cyclictest25-21ksoftirqd/123:01:401
18318993428,4cyclictest25-21ksoftirqd/122:05:491
18318993428,4cyclictest25-21ksoftirqd/122:01:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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