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2026-08-03 - 06:04
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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 rackdslot0.osadl.org (updated Mon Aug 03, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2728099252,18cyclictest0-21swapper/000:40:000
27280992314,8cyclictest0-21swapper/021:15:130
2729099221,20cyclictest0-21swapper/221:07:012
2729099220,18cyclictest0-21swapper/222:42:322
27284992219,2cyclictest1856-21systemd-udevd22:40:521
2728499220,18cyclictest0-21swapper/120:23:271
2729099214,2cyclictest3987-21H222:10:212
27290992117,3cyclictest3976-21H222:10:212
27290992114,6cyclictest0-21swapper/223:55:052
2728499216,1cyclictest21-21ksoftirqd/120:10:111
2729099204,15cyclictest0-21swapper/220:18:082
2729099204,15cyclictest0-21swapper/219:28:022
27290992012,7cyclictest843-21systemd-network23:02:012
2728099204,15cyclictest9-21ksoftirqd/020:57:500
2729099192,16cyclictest999-21cut21:15:012
27290991917,1cyclictest3983-21H222:10:212
27290991914,3cyclictest825-21nfsd422:10:172
27290991912,3cyclictest0-21swapper/222:05:142
2729099190,2cyclictest3987-21H222:10:212
2729099190,18cyclictest3976-21H222:10:212
2729099190,16cyclictest3989-21H222:10:212
2729099190,16cyclictest0-21swapper/220:05:022
2728499193,15cyclictest28872-21grep19:10:191
2728499192,16cyclictest0-21swapper/123:15:001
27284991917,1cyclictest21-21ksoftirqd/120:45:341
27284991917,1cyclictest21-21ksoftirqd/120:35:241
27284991917,1cyclictest21-21ksoftirqd/120:19:351
27284991917,1cyclictest0-21swapper/100:26:111
27284991916,2cyclictest25337-21expr21:00:141
27284991914,4cyclictest7716-21perf22:25:001
2728499190,16cyclictest3985-21H222:10:211
2728499190,16cyclictest3976-21H222:10:211
2728099193,1cyclictest14851-21cat22:35:160
27280991917,1cyclictest3989-21H222:10:210
27280991916,2cyclictest3985-21H222:10:210
2728099190,2cyclictest4099-21H222:10:210
2728099190,2cyclictest3981-21H222:10:210
2728099190,16cyclictest4035-21H222:10:210
2728099190,16cyclictest4035-21H222:10:210
2728099190,16cyclictest3979-21H222:10:210
2729099182,2cyclictest6296-21expr00:15:142
27290991816,1cyclictest0-21swapper/220:33:372
27290991815,2cyclictest21952-21if_eno123:45:162
27290991814,3cyclictest4099-21H222:10:212
2729099181,16cyclictest13094-21chrt22:34:272
2729099180,2cyclictest4099-21H222:10:212
2729099180,2cyclictest3979-21H222:10:212
2729099180,2cyclictest3979-21H222:10:212
2729099180,2cyclictest3979-21H222:10:212
2729099180,2cyclictest2007-21systemd-journal21:26:052
2729099180,17cyclictest3981-21H222:10:212
2729099180,17cyclictest18228-21grep21:45:142
2729099180,17cyclictest0-21swapper/221:16:472
2729099180,16cyclictest4099-21H222:10:212
2728499182,1cyclictest0-21swapper/100:13:101
2728499182,15cyclictest25107-21nfsd423:50:191
27284991815,2cyclictest609-21perf21:15:001
27284991814,3cyclictest6769-21ntpq20:25:181
27284991813,2cyclictest3979-21H222:10:211
2728499181,2cyclictest24775-21awk20:00:201
2728499180,3cyclictest3976-21H222:10:211
2728499180,2cyclictest3989-21H222:10:211
2728499180,2cyclictest3979-21H222:10:211
2728499180,2cyclictest3976-21H222:10:211
2728499180,15cyclictest4035-21H222:10:211
2728099182,1cyclictest118532sleep019:38:370
27280991816,1cyclictest9-21ksoftirqd/019:28:580
27280991816,1cyclictest31261-21which23:05:150
27280991816,1cyclictest0-21swapper/023:05:010
27280991816,1cyclictest0-21swapper/020:46:330
27280991815,2cyclictest3983-21H222:10:210
27280991814,3cyclictest3981-21H222:10:210
27280991814,3cyclictest0-21swapper/000:34:590
27280991813,2cyclictest3991-21H222:10:210
2728099181,16cyclictest32644-21perf19:20:010
2728099180,2cyclictest4099-21H222:10:210
2728099180,2cyclictest4035-21H222:10:210
2728099180,2cyclictest4035-21H222:10:210
2728099180,2cyclictest3987-21H222:10:210
2728099180,2cyclictest3985-21H222:10:210
2728099180,2cyclictest3981-21H222:10:210
2728099180,17cyclictest3989-21H222:10:210
2728099180,17cyclictest32471-21df22:10:130
2728099180,16cyclictest4099-21H222:10:210
2728099180,15cyclictest3976-21H222:10:210
27290991715,1cyclictest0-21swapper/222:26:082
27290991714,2cyclictest5423-21nfsd421:20:182
27290991714,2cyclictest5399-21apache_processe22:20:112
27290991714,2cyclictest3987-21H222:10:212
27290991714,2cyclictest3985-21H222:10:212
27290991714,2cyclictest32065-21pzem_current23:05:202
27290991714,2cyclictest20990-21ntp_kernel_pll_22:45:172
27290991714,2cyclictest14153-21cpuspeed_turbos00:30:132
27290991713,2cyclictest23633-21grep20:00:152
2729099171,15cyclictest120862chrt19:39:352
2729099170,2cyclictest4035-21H222:10:212
2729099170,2cyclictest399-20systemd-journal22:00:002
2729099170,2cyclictest399-20systemd-journal20:25:002
2729099170,2cyclictest3990-21H222:10:212
2729099170,2cyclictest3987-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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