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2026-09-14 - 22:06
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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 Sep 14, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1990899230,18cyclictest10465-21tr10:40:132
1990899228,13cyclictest0-21swapper/212:28:002
1990899224,3cyclictest880-21rs:main2
1990399220,21cyclictest843-21systemd-network09:48:561
1989999220,18cyclictest0-21swapper/010:34:080
1990899213,12cyclictest0-21swapper/211:47:552
1990899210,20cyclictest843-21systemd-network11:52:592
1990399213,16cyclictest10900-21latency_hist12:35:001
19903992121,0cyclictest0-21swapper/111:40:161
1989999210,6cyclictest426-21systemd-udevd08:46:520
19908992013,4cyclictest25737-21perf09:15:002
1990899201,16cyclictest3976-21H222:10:212
1990899201,15cyclictest0-21swapper/207:47:312
1990899200,3cyclictest0-21swapper/212:35:132
1990399202,17cyclictest9496-21smtpd07:45:471
19903992017,2cyclictest3414-21master11:54:451
19903992017,2cyclictest3012-21expr12:20:131
1990399200,15cyclictest0-21swapper/109:10:011
1989999202,11cyclictest6275-21perf11:30:000
1990899193,1cyclictest28-21ksoftirqd/210:38:232
19908991917,1cyclictest28-21ksoftirqd/209:38:002
1990399194,1cyclictest0-21swapper/110:32:251
1990399193,2cyclictest21243-21cron10:05:001
1990399193,15cyclictest5474-21mailstats08:35:211
1990399193,15cyclictest21-21ksoftirqd/107:20:011
1990399193,15cyclictest0-21swapper/109:20:011
1990399192,2cyclictest17631-21grep08:00:221
1990399192,2cyclictest15443-21cat08:55:121
19903991917,1cyclictest0-21swapper/109:38:511
19903991916,2cyclictest3991-21H222:10:211
19903991916,2cyclictest27586-21wc08:20:131
19903991916,2cyclictest0-21swapper/109:40:201
19903991916,2cyclictest0-21swapper/109:40:201
19903991914,4cyclictest13285-21expr07:55:141
19903991914,4cyclictest13285-21expr07:55:141
19903991914,4cyclictest0-21swapper/108:50:451
1990399191,17cyclictest29300-21nfsd410:15:171
1990399190,16cyclictest3981-21H222:10:211
19899991915,3cyclictest0-21swapper/009:20:190
19899991914,4cyclictest843-21systemd-network11:49:220
1989999190,18cyclictest0-21swapper/011:14:210
1990899183,1cyclictest28-21ksoftirqd/208:04:192
1990899182,15cyclictest0-21swapper/207:21:002
19908991816,1cyclictest28-21ksoftirqd/208:56:162
19908991816,1cyclictest0-21swapper/212:00:382
19908991816,1cyclictest0-21swapper/211:15:432
19908991816,1cyclictest0-21swapper/211:10:162
19908991815,2cyclictest26844-21chrt11:09:302
19908991814,3cyclictest3976-21H222:10:212
1990899181,16cyclictest2453-21systemctl08:30:212
1990899180,2cyclictest3989-21H222:10:212
1990899180,2cyclictest3981-21H222:10:212
1990899180,17cyclictest0-21swapper/209:44:122
1990899180,17cyclictest0-21swapper/209:44:122
1990899180,16cyclictest24222-21python310:10:012
1990899180,16cyclictest24222-21python310:10:012
1990399182,15cyclictest0-21swapper/112:17:251
1990399182,15cyclictest0-21swapper/112:17:251
1990399182,15cyclictest0-21swapper/110:40:131
1990399182,15cyclictest0-21swapper/110:36:411
19903991816,1cyclictest0-21swapper/111:30:131
19903991816,1cyclictest0-21swapper/111:00:011
19903991816,1cyclictest0-21swapper/109:55:151
19903991816,1cyclictest0-21swapper/108:10:211
19903991815,2cyclictest30058-21sed07:25:211
19903991815,2cyclictest25436-21sed12:00:211
19903991815,2cyclictest2347-21if_eno107:35:171
19903991815,2cyclictest21824-21cut11:55:161
19903991815,2cyclictest15988-21cut09:55:011
19903991815,2cyclictest0-21swapper/111:05:141
19903991815,2cyclictest0-21swapper/108:05:141
19903991814,3cyclictest29724-21pluginstate11:15:001
19903991814,3cyclictest25958-21wc07:20:141
19903991814,3cyclictest0-21swapper/110:45:141
19903991814,3cyclictest0-21swapper/109:00:141
1990399181,2cyclictest30466-21cpu08:25:141
1990399181,2cyclictest24962-21chrt10:10:101
1990399181,2cyclictest0-21swapper/108:15:151
1990399181,16cyclictest32405-21sendmail_mailqu10:20:201
1990399181,16cyclictest0-21swapper/112:05:131
1990399181,16cyclictest0-21swapper/108:44:201
1990399180,17cyclictest0-21swapper/112:25:131
1990399180,16cyclictest0-21swapper/107:33:241
1989999182,1cyclictest9-21ksoftirqd/012:06:340
1989999182,15cyclictest0-21swapper/012:00:210
19899991816,1cyclictest9-21ksoftirqd/008:25:010
19899991814,3cyclictest455-21plymouthd10:40:130
1989999181,2cyclictest6605-21ps09:35:200
1989999181,2cyclictest30560-21expr08:25:140
1989999181,16cyclictest29092-21grep07:25:150
1989999180,2cyclictest3976-21H222:10:210
19908991714,2cyclictest31611-21expr07:30:122
19908991714,2cyclictest21612-21munin-run08:10:012
19908991714,2cyclictest1516-21lxd11:36:452
19908991714,1cyclictest0-21swapper/209:51:252
19908991713,2cyclictest3976-21H222:10:212
1990899171,15cyclictest7050-21chrt07:44:352
1990899170,2cyclictest8014-21nfsd408:40:172
1990899170,2cyclictest6192-21timerwakeupswit10:30:202
1990899170,2cyclictest4383-21awk07:40:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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