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2026-05-21 - 21:50
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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 Thu May 21, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1331099253,15cyclictest13979-21latency_hist11:00:000
13310992313,5cyclictest0-21swapper/011:20:210
1331199220,20cyclictest455-21plymouthd10:50:131
1331299202,17cyclictest0-21swapper/212:25:122
13312992017,2cyclictest23105-21switchtime12:10:212
13311992018,1cyclictest21-21ksoftirqd/111:00:001
13311992014,3cyclictest0-21swapper/110:33:261
1331099200,17cyclictest0-21swapper/012:20:000
1331099200,17cyclictest0-21swapper/011:07:210
1331299195,13cyclictest0-21swapper/208:42:572
1331299194,1cyclictest0-21swapper/211:12:352
13312991911,5cyclictest0-21swapper/208:26:412
1331299190,18cyclictest0-21swapper/209:45:152
1331299190,16cyclictest3985-21H222:10:212
13311991915,3cyclictest0-21swapper/112:20:181
1331199191,2cyclictest0-21swapper/107:30:171
1331199191,2cyclictest0-21swapper/107:30:171
1331199190,5cyclictest0-21swapper/111:45:161
1331199190,3cyclictest0-21swapper/112:15:381
1331199190,18cyclictest16121-21pluginstate07:15:011
1331199190,17cyclictest25361-21idleruntime-cro11:20:001
13310991918,0cyclictest0-21swapper/012:37:070
1331099190,1cyclictest0-21swapper/010:20:200
1331099190,16cyclictest11151-21nfsd409:55:160
1331099190,15cyclictest0-21swapper/012:01:190
1331299182,0cyclictest0-21swapper/209:24:232
13312991816,1cyclictest28-21ksoftirqd/211:30:172
13312991815,1cyclictest0-21swapper/211:04:372
13311991816,1cyclictest0-21swapper/111:30:181
13311991816,1cyclictest0-21swapper/111:06:111
13311991816,1cyclictest0-21swapper/109:10:141
13311991816,1cyclictest0-21swapper/109:00:171
13311991815,2cyclictest30849-21nfsd412:25:161
13311991814,2cyclictest3053-21systemd-logind08:40:521
1331199180,3cyclictest1523-21lxd12:08:431
1331199180,17cyclictest870-21systemd-logind11:53:511
1331199180,17cyclictest0-21swapper/112:10:141
1331099182,15cyclictest0-21swapper/008:55:010
13310991816,1cyclictest0-21swapper/010:18:000
13310991816,1cyclictest0-21swapper/009:40:140
13310991815,2cyclictest2104-21seq12:31:420
1331099181,2cyclictest22752-21uname07:25:170
1331099181,16cyclictest28995-21cat09:30:160
1331299172,1cyclictest0-21swapper/208:15:032
13312991715,1cyclictest3979-21H222:10:212
13312991715,1cyclictest0-21swapper/211:55:152
13312991715,1cyclictest0-21swapper/211:55:152
13312991715,1cyclictest0-21swapper/211:35:172
13312991715,1cyclictest0-21swapper/210:00:142
13312991714,2cyclictest6029-21apache_accesses10:45:102
13312991714,2cyclictest20390-21cat09:15:152
13312991714,2cyclictest17919-21sendmail_mailst07:15:212
13312991713,3cyclictest0-21swapper/209:00:182
13312991712,3cyclictest0-21swapper/211:41:192
1331299170,2cyclictest5371-21munin-run08:50:002
1331299170,2cyclictest4511-21nfsd410:40:152
1331299170,2cyclictest3985-21H222:10:212
1331299170,2cyclictest3954-21VM22:10:212
1331299170,2cyclictest3639-21cut12:35:142
1331299170,2cyclictest28068-21sendmail_mailqu10:25:192
1331299170,2cyclictest24908-21idleruntime12:15:162
1331299170,2cyclictest11663-21grep11:50:162
1331299170,16cyclictest7988-21systemctl07:55:212
1331299170,16cyclictest7844-21fschecks_count09:50:162
1331299170,16cyclictest4099-21H222:10:212
1331299170,16cyclictest399-20systemd-journal08:03:242
1331299170,16cyclictest24157-21sed11:15:172
1331299170,16cyclictest24130-21cstates10:20:152
1331299170,16cyclictest18867-21expr10:10:142
1331299170,16cyclictest1523-21lxd10:18:422
1331299170,16cyclictest1377-21lxd07:52:422
1331299170,16cyclictest1227-21nfsd412:30:172
13311991715,1cyclictest85022sleep107:57:281
13311991715,1cyclictest0-21swapper/110:20:221
13311991714,2cyclictest5889-21expr08:50:141
13311991714,2cyclictest3976-21H222:10:211
13311991714,2cyclictest2872-21systemd-logind12:34:511
13311991714,2cyclictest25608-21cat08:25:211
13311991714,2cyclictest22577-21idleruntime07:25:171
13311991714,2cyclictest12663-21/usr/sbin/munin10:00:211
13311991714,2cyclictest1100-21snmpd09:51:571
13311991714,2cyclictest10957-21sed08:00:211
13311991713,3cyclictest0-21swapper/110:09:001
1331199170,2cyclictest4814-21sed10:40:181
1331199170,2cyclictest3053-21systemd-logind09:58:521
1331199170,2cyclictest3053-21systemd-logind08:56:521
1331199170,2cyclictest13176-21tr11:55:131
1331199170,2cyclictest13176-21tr11:55:131
1331199170,2cyclictest12302-21expr08:05:141
1331199170,2cyclictest11498-21/usr/sbin/munin10:55:171
1331199170,16cyclictest5202-21smartctl09:45:161
1331199170,16cyclictest455-21plymouthd09:25:151
1331199170,16cyclictest3985-21H222:10:211
1331199170,16cyclictest3053-21systemd-logind11:22:511
1331199170,16cyclictest16901-21expr07:15:151
1331199170,16cyclictest0-21swapper/110:35:201
1331199170,16cyclictest0-21swapper/107:40:101
1331199170,15cyclictest3976-21H222:10:211
1331199170,15cyclictest0-21swapper/109:40:171
13310991717,0cyclictest0-21swapper/012:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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