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2026-09-15 - 03:32
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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 Tue Sep 15, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3125899300,29cyclictest0-21swapper/022:50:120
3126099220,21cyclictest843-21systemd-network23:29:252
3126099220,21cyclictest843-21systemd-network22:56:542
3126099212,18cyclictest0-21swapper/220:25:512
3125999215,9cyclictest0-21swapper/121:38:571
31259992112,3cyclictest0-21swapper/120:42:081
3126099202,17cyclictest3981-21H222:10:212
3126099202,17cyclictest19639-21smtpd22:37:402
3126099200,5cyclictest0-21swapper/220:18:232
31259992017,2cyclictest3414-21master20:12:041
3125899203,9cyclictest11345-21python320:30:010
31260991917,1cyclictest0-21swapper/221:21:012
31260991916,2cyclictest426-21systemd-udevd19:26:522
3126099191,3cyclictest0-21swapper/223:33:482
3126099190,2cyclictest3979-21H222:10:212
3126099190,1cyclictest0-21swapper/222:13:552
3126099190,16cyclictest3991-21H222:10:212
3126099190,16cyclictest3987-21H222:10:212
3126099190,16cyclictest3981-21H222:10:212
3126099190,16cyclictest3976-21H222:10:212
3125999192,16cyclictest5035-21smtpd23:07:421
31259991917,1cyclictest8667-21mailstats00:10:201
31259991917,1cyclictest0-21swapper/122:08:511
31259991916,2cyclictest11297-21chrt23:20:141
3125999190,16cyclictest0-21swapper/122:45:011
3125899193,15cyclictest9-21ksoftirqd/022:05:430
3125899193,15cyclictest3976-21H222:10:210
3125899192,16cyclictest3989-21H222:10:210
31258991917,1cyclictest9-21ksoftirqd/019:47:100
31258991917,1cyclictest9-21ksoftirqd/019:47:100
3125899190,16cyclictest3987-21H222:10:210
31260991816,1cyclictest28-21ksoftirqd/219:17:432
31260991816,1cyclictest0-21swapper/200:20:302
31260991815,2cyclictest6571-21processes19:20:202
31260991814,3cyclictest455-21plymouthd20:01:132
3126099181,2cyclictest3990-21H222:10:212
3126099180,2cyclictest3987-21H222:10:212
3126099180,2cyclictest3985-21H222:10:212
3126099180,2cyclictest3981-21H222:10:212
3126099180,2cyclictest11632-21cron22:29:552
3126099180,17cyclictest863-21avahi-daemon23:45:202
3126099180,17cyclictest3981-21H222:10:212
3126099180,17cyclictest3979-21H222:10:212
3126099180,16cyclictest3976-21H222:10:212
3126099180,15cyclictest3989-21H222:10:212
3125999183,1cyclictest0-21swapper/122:56:481
3125999182,15cyclictest22586-21kernelversion00:35:171
3125999182,15cyclictest21-21ksoftirqd/100:20:221
31259991815,2cyclictest3981-21H222:10:211
3125999180,3cyclictest20447-21grep21:40:171
3125999180,2cyclictest3981-21H222:10:211
3125999180,2cyclictest3976-21H222:10:211
3125999180,16cyclictest3983-21H222:10:211
3125999180,15cyclictest3981-21H222:10:211
3125899183,1cyclictest9-21ksoftirqd/021:55:190
3125899182,15cyclictest9-21ksoftirqd/000:38:140
3125899182,15cyclictest18568-21timerandwakeup23:30:210
3125899182,15cyclictest0-21swapper/023:23:440
31258991814,3cyclictest3985-21H222:10:210
31258991814,3cyclictest19174-21ls22:35:210
3125899181,16cyclictest16656-21timerandwakeup20:35:220
3125899180,2cyclictest4035-21H222:10:210
3125899180,2cyclictest3989-21H222:10:210
3125899180,17cyclictest3981-21H222:10:210
3125899180,16cyclictest1516-21lxd22:20:520
3126099172,1cyclictest0-21swapper/221:14:202
31260991715,1cyclictest0-21swapper/221:51:052
31260991714,2cyclictest3991-21H222:10:212
31260991714,2cyclictest3989-21H222:10:212
31260991714,2cyclictest28974-21processes21:55:202
31260991714,2cyclictest17771-21systemctl19:40:222
31260991714,2cyclictest11195-21expr21:25:142
31260991714,2cyclictest10818-21ls19:30:142
31260991714,1cyclictest0-21swapper/220:20:152
3126099171,1cyclictest16560-21sed00:25:132
3126099171,15cyclictest0-21swapper/219:35:102
3126099170,2cyclictest3991-21H222:10:212
3126099170,2cyclictest3987-21H222:10:212
3126099170,2cyclictest3981-21H222:10:212
3126099170,2cyclictest3981-21H222:10:212
3126099170,2cyclictest3294-21expr23:05:132
3126099170,2cyclictest3053-21systemd-logind23:44:522
3126099170,2cyclictest3053-21systemd-logind23:44:512
3126099170,2cyclictest30187-21cat20:05:142
3126099170,2cyclictest21287-21if_err_enp1s022:40:162
3126099170,2cyclictest19798-21grep20:40:232
3126099170,2cyclictest19736-21cstates23:35:122
3126099170,2cyclictest16381-21pzem_voltage20:35:222
3126099170,16cyclictest8220-21tr00:10:172
3126099170,16cyclictest8123-21pzem_voltage22:15:182
3126099170,16cyclictest4035-21H222:10:212
3126099170,16cyclictest3991-21H222:10:212
3126099170,16cyclictest3987-21H222:10:212
3126099170,16cyclictest3985-21H222:10:212
3126099170,16cyclictest3981-21H222:10:212
3126099170,16cyclictest3979-21H222:10:212
3126099170,16cyclictest3976-21H222:10:212
3126099170,16cyclictest23655-21sendmail-mta00:35:462
3126099170,16cyclictest18531-21apache219:45:162
3126099170,16cyclictest18531-21apache219:45:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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