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2026-04-20 - 06:28
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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 50 highest latencies:
System rackdslot1.osadl.org (updated Mon Apr 20, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2228921580,5sleep20-21swapper/221:35:252
1858699823,77cyclictest0-21swapper/222:40:282
18585996916,16cyclictest8771-21chrt19:56:151
18585996914,11cyclictest4772-21chrt22:09:461
1858499697,6cyclictest134691getstats22:50:080
18585996816,16cyclictest31989-21chrt19:37:141
18585996815,15cyclictest28349-21chrt00:08:321
18585996814,9cyclictest29863-21seq20:42:191
18585996716,15cyclictest30502-21chrt00:11:491
18585996614,11cyclictest13545-21taskset21:15:451
18585996612,11cyclictest302092sleep123:02:411
134491660,4ptp4l28350-21apt-get23:00:142
18585996516,16cyclictest25298-21chrt21:43:341
18585996515,11cyclictest16292-21chrt23:42:041
18585996515,11cyclictest11310-21taskset20:04:001
18585996514,12cyclictest18743-21taskset23:46:161
18585996514,12cyclictest1317-21runrttasks22:14:421
18585996514,11cyclictest13636-21chrt20:06:021
18585996416,16cyclictest18150-21taskset21:25:371
18585996416,16cyclictest11510-21chrt23:30:401
134491640,3ptp4l17724-21ntp_states22:35:233
18585996315,15cyclictest25276-21chrt20:32:421
18585996314,11cyclictest1317-21runrttasks20:18:491
18585996313,10cyclictest20300-21chrt19:10:301
18585996312,11cyclictest5882sleep100:19:401
1858599629,18cyclictest15475-21systemctl21:20:261
18585996217,16cyclictest5189-21chrt00:28:181
18585996215,16cyclictest16243-21chrt22:33:371
18585996215,15cyclictest27881-21chrt22:57:321
18585996215,15cyclictest23255-21chrt22:49:541
18585996215,11cyclictest30118-21seq21:53:441
18585996214,12cyclictest1317-21runrttasks20:21:171
18585996214,10cyclictest25485-21taskset22:51:221
18585996214,10cyclictest22839-21chrt20:25:561
18584996212,10cyclictest1317-21runrttasks20:57:040
18586996133,8cyclictest33-21ksoftirqd/223:55:152
18585996116,16cyclictest32221-21chrt20:48:061
18585996115,15cyclictest6648-21chrt19:53:261
18585996115,15cyclictest4427-21chrt19:49:251
18585996112,10cyclictest276742chrt21:49:321
18584996113,12cyclictest1317-21runrttasks00:13:360
18585996015,10cyclictest7383-21chrt00:31:591
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest2054-21chrt19:44:041
18585996014,11cyclictest32601-21taskset20:50:071
18585996013,11cyclictest4612-21cat20:59:551
18585996013,11cyclictest1317-21runrttasks22:39:341
18585996012,10cyclictest32189-21seq21:55:531
18584996017,11cyclictest11533-21taskset22:22:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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