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2026-08-26 - 09:36
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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 rackdslot3.osadl.org (updated Wed Aug 26, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491208144,22phc2sys0-21swapper/319:08:593
71642206167,27sleep10-21swapper/119:06:391
73762205170,23sleep20-21swapper/219:09:262
73742204171,22sleep00-21swapper/019:09:240
415221710,7sleep3771899cyclictest21:15:223
139391710,1ptp4l391rcuc/323:10:163
150842640,5sleep0771599cyclictest19:25:110
139391520,0ptp4l391rcuc/321:30:443
7718995120,3cyclictest41-21ksoftirqd/320:27:183
134491500,2getstats0-21swapper/321:25:143
134491490,2getstats0-21swapper/321:40:153
771899469,5cyclictest41-21ksoftirqd/320:01:443
771899467,5cyclictest41-21ksoftirqd/321:07:443
771899458,5cyclictest41-21ksoftirqd/323:04:533
771899449,4cyclictest41-21ksoftirqd/322:42:473
7718994437,4cyclictest17200-21cron19:29:593
771899437,5cyclictest41-21ksoftirqd/300:18:473
771899437,4cyclictest41-21ksoftirqd/323:36:473
771899432,3cyclictest41-21ksoftirqd/300:30:263
139391430,35ptp4l0-21swapper/319:10:013
771599424,6cyclictest121rcu_preempt20:05:240
139391420,0ptp4l401ktimersoftd/322:04:023
139391420,0ptp4l401ktimersoftd/319:55:573
7718994114,8cyclictest41-21ksoftirqd/319:47:313
7715994136,3cyclictest9-21ksoftirqd/020:15:010
7718994015,3cyclictest41-21ksoftirqd/320:16:153
771899401,18cyclictest29435-21/usr/sbin/munin00:25:143
771899401,18cyclictest29435-21/usr/sbin/munin00:25:143
7715994035,3cyclictest9-21ksoftirqd/020:35:010
139391400,0ptp4l401ktimersoftd/322:21:043
7718993916,4cyclictest41-21ksoftirqd/321:52:293
7718993914,3cyclictest41-21ksoftirqd/323:08:293
7716993932,4cyclictest25-21ksoftirqd/100:25:131
7716993932,4cyclictest25-21ksoftirqd/100:25:121
7715993935,2cyclictest9-21ksoftirqd/022:20:000
7715993934,3cyclictest9-21ksoftirqd/020:19:590
134491390,1getstats0-21swapper/320:05:143
771899381,5cyclictest41-21ksoftirqd/323:17:013
7716993831,5cyclictest25-21ksoftirqd/120:32:201
7715993833,3cyclictest9-21ksoftirqd/023:40:010
7715993833,3cyclictest9-21ksoftirqd/021:39:590
7715993833,3cyclictest9-21ksoftirqd/021:05:010
7715993833,3cyclictest9-21ksoftirqd/020:50:000
7715993833,3cyclictest9-21ksoftirqd/019:25:000
771899377,4cyclictest41-21ksoftirqd/323:45:123
771899374,5cyclictest11371-21cat22:40:003
771899371,5cyclictest41-21ksoftirqd/320:58:363
7718993713,9cyclictest41-21ksoftirqd/322:59:163
7718993713,4cyclictest41-21ksoftirqd/322:09:323
7716993731,4cyclictest25-21ksoftirqd/122:07:071
7716993731,4cyclictest25-21ksoftirqd/119:37:321
7716993730,5cyclictest25-21ksoftirqd/120:37:301
7716993730,4cyclictest25-21ksoftirqd/121:21:581
7715993732,3cyclictest9-21ksoftirqd/023:30:010
7715993732,3cyclictest9-21ksoftirqd/023:30:010
7715993732,3cyclictest9-21ksoftirqd/022:30:000
7715993732,3cyclictest9-21ksoftirqd/022:30:000
7715993731,3cyclictest9-21ksoftirqd/022:05:150
7718993613,7cyclictest41-21ksoftirqd/322:13:413
7718993613,4cyclictest41-21ksoftirqd/300:21:353
7718993612,4cyclictest41-21ksoftirqd/319:32:143
7718993611,7cyclictest41-21ksoftirqd/320:52:293
7717993630,4cyclictest33-21ksoftirqd/220:03:582
7716993631,3cyclictest25-21ksoftirqd/119:55:001
7716993630,4cyclictest25-21ksoftirqd/119:43:221
7716993630,4cyclictest25-21ksoftirqd/100:14:211
7716993629,5cyclictest25-21ksoftirqd/122:41:131
7715993632,2cyclictest9-21ksoftirqd/023:50:140
7715993631,3cyclictest9-21ksoftirqd/023:55:140
7715993631,3cyclictest9-21ksoftirqd/023:55:130
7715993631,3cyclictest9-21ksoftirqd/023:45:140
7715993631,3cyclictest9-21ksoftirqd/021:15:210
7715993631,3cyclictest9-21ksoftirqd/021:10:190
7715993631,3cyclictest9-21ksoftirqd/020:00:000
7715993631,3cyclictest9-21ksoftirqd/019:40:010
7715993631,3cyclictest9-21ksoftirqd/019:19:590
7715993630,4cyclictest9-21ksoftirqd/023:16:300
7715993630,4cyclictest9-21ksoftirqd/022:35:110
7715993630,4cyclictest9-21ksoftirqd/022:00:010
7715993630,3cyclictest9-21ksoftirqd/000:36:520
7718993530,3cyclictest41-21ksoftirqd/323:50:113
771899352,5cyclictest41-21ksoftirqd/322:25:293
771899352,5cyclictest41-21ksoftirqd/322:25:293
7717993529,4cyclictest33-21ksoftirqd/219:33:322
7717993528,5cyclictest33-21ksoftirqd/223:01:372
7716993531,2cyclictest25-21ksoftirqd/120:05:141
7716993529,4cyclictest25-21ksoftirqd/123:28:591
7716993529,4cyclictest25-21ksoftirqd/123:28:591
7716993529,4cyclictest25-21ksoftirqd/123:07:251
7716993529,4cyclictest25-21ksoftirqd/120:40:351
7715993530,3cyclictest9-21ksoftirqd/023:05:000
7715993530,3cyclictest9-21ksoftirqd/022:40:180
7715993530,3cyclictest9-21ksoftirqd/021:00:010
7715993529,4cyclictest9-21ksoftirqd/022:10:200
7715993529,3cyclictest9-21ksoftirqd/021:45:000
139391350,0ptp4l401ktimersoftd/321:20:303
771899344,4cyclictest41-21ksoftirqd/320:10:233
7718993428,4cyclictest41-21ksoftirqd/321:14:393
7718993428,4cyclictest41-21ksoftirqd/320:37:593
7717993429,3cyclictest33-21ksoftirqd/223:21:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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