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2026-04-27 - 09:52
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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 27, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276572206172,23sleep10-21swapper/119:05:461
138591205171,23phc2sys0-21swapper/319:09:103
277462201166,23sleep00-21swapper/019:06:480
278572200167,22sleep20-21swapper/219:08:152
1069521780,5sleep02828299cyclictest20:45:010
279912165127,13sleep20-21swapper/219:10:012
56021580,5sleep12828399cyclictest20:25:131
138591134108,14phc2sys0-21swapper/319:10:013
211832630,2sleep20-21swapper/221:05:132
89482590,2sleep10-21swapper/122:50:151
138491580,1ptp4l401ktimersoftd/300:00:193
138491540,1ptp4l401ktimersoftd/319:50:253
74342530,5sleep27431-21latency21:40:192
261462510,1sleep20-21swapper/220:10:172
123872500,2sleep10-21swapper/120:45:261
2828499480,25cyclictest0-21swapper/219:47:442
135191470,7getstats2828599cyclictest23:21:093
50798460,11rtkit-daemon0-21swapper/023:31:080
28283994516,27cyclictest0-21swapper/119:31:431
138491440,0ptp4l401ktimersoftd/322:20:373
28283994313,29cyclictest0-21swapper/119:51:531
138491430,0ptp4l401ktimersoftd/321:02:073
2828499420,41cyclictest0-21swapper/219:37:242
138491400,1ptp4l401ktimersoftd/320:26:113
50798390,4rtkit-daemon31625-21iostat_ios21:25:190
28285993934,3cyclictest41-21ksoftirqd/321:40:003
28285993934,3cyclictest41-21ksoftirqd/321:35:003
28285993925,12cyclictest41-21ksoftirqd/320:50:013
2828499390,37cyclictest0-21swapper/220:54:442
28283993917,20cyclictest0-21swapper/119:19:331
138491390,0ptp4l401ktimersoftd/321:50:203
138491390,0ptp4l401ktimersoftd/320:05:123
138491390,0ptp4l401ktimersoftd/300:37:423
50798380,2rtkit-daemon506-21rtkit-daemon20:03:213
28284993832,4cyclictest33-21ksoftirqd/223:25:452
28284993832,4cyclictest33-21ksoftirqd/221:57:072
28283993832,4cyclictest25-21ksoftirqd/122:27:241
28283993831,4cyclictest25-21ksoftirqd/100:25:231
28283993829,5cyclictest25-21ksoftirqd/123:50:111
50798370,7rtkit-daemon0-21swapper/100:13:041
28285993730,4cyclictest41-21ksoftirqd/321:25:523
28284993731,4cyclictest33-21ksoftirqd/200:12:162
28282993722,3cyclictest9-21ksoftirqd/021:00:120
28285993631,3cyclictest9306-21kworker/3:223:15:123
28285993630,4cyclictest41-21ksoftirqd/322:32:043
28285993630,4cyclictest41-21ksoftirqd/319:39:093
28285993630,4cyclictest41-21ksoftirqd/300:28:093
28284993630,4cyclictest33-21ksoftirqd/223:47:132
28284993630,4cyclictest33-21ksoftirqd/220:34:032
28284993630,4cyclictest33-21ksoftirqd/220:07:162
28284993629,5cyclictest33-21ksoftirqd/220:47:072
28283993630,4cyclictest25-21ksoftirqd/122:20:111
28283993630,4cyclictest25-21ksoftirqd/122:07:021
28283993630,4cyclictest25-21ksoftirqd/121:21:521
28283993630,4cyclictest25-21ksoftirqd/100:16:431
28283993613,22cyclictest0-21swapper/119:46:521
28282993630,4cyclictest9-21ksoftirqd/021:21:280
28282993630,4cyclictest9-21ksoftirqd/000:28:060
50798350,3rtkit-daemon0-21swapper/021:34:070
28285993531,3cyclictest41-21ksoftirqd/323:05:123
28285993529,4cyclictest41-21ksoftirqd/323:02:283
28285993529,4cyclictest41-21ksoftirqd/321:11:283
28285993528,4cyclictest41-21ksoftirqd/322:49:083
28284993530,3cyclictest33-21ksoftirqd/221:12:072
28284993529,4cyclictest33-21ksoftirqd/223:43:482
28284993529,4cyclictest33-21ksoftirqd/223:24:052
28284993529,4cyclictest33-21ksoftirqd/220:04:102
28284993529,4cyclictest33-21ksoftirqd/200:39:082
28284993529,4cyclictest33-21ksoftirqd/200:18:532
28284993528,4cyclictest33-21ksoftirqd/221:21:382
2828499351,2cyclictest0-21swapper/219:15:542
28283993530,3cyclictest25-21ksoftirqd/122:00:321
28283993530,3cyclictest13491-21cron21:54:591
28283993529,4cyclictest25-21ksoftirqd/123:44:061
28283993529,4cyclictest25-21ksoftirqd/120:22:561
28283993529,3cyclictest25-21ksoftirqd/121:00:011
28283993528,4cyclictest25-21ksoftirqd/123:00:131
28282993531,3cyclictest9-21ksoftirqd/019:35:110
28282993530,3cyclictest9-21ksoftirqd/000:15:130
28282993529,4cyclictest9-21ksoftirqd/023:49:110
28282993529,4cyclictest9-21ksoftirqd/022:55:020
28282993529,4cyclictest9-21ksoftirqd/022:05:360
28282993529,4cyclictest9-21ksoftirqd/019:51:460
28285993429,3cyclictest41-21ksoftirqd/300:20:113
28285993429,2cyclictest41-21ksoftirqd/300:35:003
28285993428,4cyclictest41-21ksoftirqd/322:43:343
28285993428,4cyclictest41-21ksoftirqd/322:17:183
28285993412,20cyclictest6691-21kworker/3:019:43:023
28284993429,3cyclictest33-21ksoftirqd/223:11:092
28284993429,3cyclictest33-21ksoftirqd/220:41:082
28284993428,4cyclictest33-21ksoftirqd/220:18:082
28283993429,3cyclictest25-21ksoftirqd/121:44:491
28283993428,4cyclictest25-21ksoftirqd/123:48:311
28283993428,4cyclictest25-21ksoftirqd/121:10:101
28283993428,4cyclictest25-21ksoftirqd/119:36:021
28282993429,3cyclictest9-21ksoftirqd/020:31:240
28282993428,4cyclictest9-21ksoftirqd/023:51:320
28282993428,4cyclictest9-21ksoftirqd/023:22:060
28282993428,4cyclictest9-21ksoftirqd/023:11:310
28282993428,4cyclictest9-21ksoftirqd/021:55:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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