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2026-06-23 - 12:08
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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 Jun 23, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591233166,22phc2sys0-21swapper/319:08:443
255462205170,23sleep10-21swapper/119:09:281
255552203170,22sleep00-21swapper/019:09:350
254082202170,21sleep20-21swapper/219:07:402
2604721650,6sleep12588299cyclictest20:15:101
497321380,4sleep22588399cyclictest21:40:242
2423921370,2sleep00-21swapper/000:30:190
1114321250,4sleep22588399cyclictest00:05:132
2588399641,30cyclictest5994-21/usr/sbin/munin21:45:072
190282590,2sleep10-21swapper/123:15:181
2588399580,26cyclictest22631-21grep21:10:272
135191580,1getstats0-21swapper/323:39:583
2588399527,21cyclictest27463-21gzip20:15:232
135191500,7getstats2588499cyclictest22:24:583
138491480,1ptp4l401ktimersoftd/322:52:333
138491470,1ptp4l401ktimersoftd/300:04:393
138491440,0ptp4l401ktimersoftd/321:46:443
138491430,0ptp4l401ktimersoftd/323:31:063
138491430,0ptp4l401ktimersoftd/321:00:473
2588399422,6cyclictest121rcu_preempt22:00:152
25882994236,3cyclictest21429-21irqrtprio23:20:181
2559024232,4sleep20-21swapper/219:10:012
135191420,1getstats0-21swapper/323:24:583
25884994035,3cyclictest41-21ksoftirqd/319:20:003
2588399400,2cyclictest0-21swapper/221:40:012
25881994026,12cyclictest9-21ksoftirqd/022:00:110
135191390,1getstats29453-1kworker/3:0H23:19:583
25883993833,3cyclictest33-21ksoftirqd/220:05:002
25882993832,4cyclictest25-21ksoftirqd/119:30:591
25884993733,3cyclictest41-21ksoftirqd/320:00:003
25884993730,5cyclictest41-21ksoftirqd/321:29:303
25881993731,4cyclictest9-21ksoftirqd/000:10:530
138491370,0ptp4l401ktimersoftd/320:10:273
135191370,1getstats29453-1kworker/3:0H23:29:583
135191370,1getstats20908-1kworker/3:1H20:44:583
135191370,1getstats20908-1kworker/3:1H20:34:573
25884993630,4cyclictest41-21ksoftirqd/320:35:023
25883993630,4cyclictest33-21ksoftirqd/223:38:312
25883993630,4cyclictest33-21ksoftirqd/223:18:092
25883993630,4cyclictest33-21ksoftirqd/220:43:432
25883993629,4cyclictest33-21ksoftirqd/219:38:522
2588399361,22cyclictest10517-21chrt00:04:532
25882993630,4cyclictest25-21ksoftirqd/123:01:421
25882993630,4cyclictest25-21ksoftirqd/122:45:541
25882993630,4cyclictest25-21ksoftirqd/122:45:541
25882993630,4cyclictest25-21ksoftirqd/121:46:331
25882993629,4cyclictest25-21ksoftirqd/120:00:001
25881993630,4cyclictest9-21ksoftirqd/023:57:100
25884993529,4cyclictest41-21ksoftirqd/323:43:323
25884993529,4cyclictest41-21ksoftirqd/323:06:413
25884993529,4cyclictest41-21ksoftirqd/322:04:033
25884993529,4cyclictest41-21ksoftirqd/320:04:333
25884993529,4cyclictest41-21ksoftirqd/319:34:363
25884993529,4cyclictest41-21ksoftirqd/300:36:093
25883993529,4cyclictest33-21ksoftirqd/223:03:442
25883993529,4cyclictest33-21ksoftirqd/220:11:182
25882993529,4cyclictest25-21ksoftirqd/122:28:401
25882993529,4cyclictest25-21ksoftirqd/120:38:211
25882993529,4cyclictest25-21ksoftirqd/120:14:101
25881993530,3cyclictest9-21ksoftirqd/023:10:110
25881993529,4cyclictest9-21ksoftirqd/021:56:550
25881993529,4cyclictest9-21ksoftirqd/021:19:480
25881993529,4cyclictest9-21ksoftirqd/020:19:500
25881993529,4cyclictest9-21ksoftirqd/019:49:180
25881993529,4cyclictest9-21ksoftirqd/019:24:340
25881993529,4cyclictest9-21ksoftirqd/000:23:060
50798340,1rtkit-daemon506-21rtkit-daemon20:55:301
25884993428,4cyclictest41-21ksoftirqd/300:12:133
25883993429,3cyclictest33-21ksoftirqd/223:56:242
25883993429,3cyclictest33-21ksoftirqd/221:33:482
25883993429,3cyclictest33-21ksoftirqd/221:33:482
25883993428,4cyclictest33-21ksoftirqd/222:26:052
25883993428,4cyclictest33-21ksoftirqd/221:52:062
25883993428,4cyclictest33-21ksoftirqd/220:26:472
25883993428,4cyclictest33-21ksoftirqd/219:41:012
25883993428,4cyclictest33-21ksoftirqd/219:34:432
25883993428,4cyclictest33-21ksoftirqd/200:33:422
2588399340,3cyclictest19884-21awk00:20:252
25882993429,3cyclictest25-21ksoftirqd/123:10:101
25882993429,3cyclictest25-21ksoftirqd/121:44:221
25882993429,3cyclictest25-21ksoftirqd/100:08:111
25882993428,4cyclictest25-21ksoftirqd/123:57:261
25882993428,4cyclictest25-21ksoftirqd/122:58:251
25882993428,4cyclictest25-21ksoftirqd/122:13:531
25882993428,4cyclictest25-21ksoftirqd/121:53:191
25882993428,4cyclictest25-21ksoftirqd/120:30:111
25882993428,4cyclictest25-21ksoftirqd/119:45:051
25882993428,4cyclictest25-21ksoftirqd/119:37:191
25882993428,4cyclictest25-21ksoftirqd/100:11:311
25881993429,3cyclictest9-21ksoftirqd/023:35:020
25881993428,4cyclictest9-21ksoftirqd/023:42:540
25881993428,4cyclictest9-21ksoftirqd/022:25:590
25881993428,4cyclictest9-21ksoftirqd/022:10:110
25881993428,4cyclictest9-21ksoftirqd/020:51:240
25881993428,4cyclictest9-21ksoftirqd/019:50:380
25881993428,4cyclictest9-21ksoftirqd/019:14:350
25884993328,3cyclictest41-21ksoftirqd/323:03:123
25884993328,3cyclictest41-21ksoftirqd/320:54:473
25884993328,3cyclictest41-21ksoftirqd/300:25:103
25884993327,4cyclictest41-21ksoftirqd/323:51:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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