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2026-04-21 - 08:36
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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 Apr 21, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14824993321,10cyclictest29847-21kworker/1:121:55:151
14824992818,0cyclictest0-21swapper/122:01:501
14820992216,3cyclictest9-21ksoftirqd/022:28:040
1482999210,20cyclictest843-21systemd-network22:00:462
1482499210,20cyclictest870-21systemd-logind23:18:511
1482499210,18cyclictest0-21swapper/123:59:231
14820992112,5cyclictest0-21swapper/020:45:020
1482099210,7cyclictest870-21systemd-logind20:23:520
14824992017,2cyclictest3976-21H222:10:211
1482099202,3cyclictest0-21swapper/023:34:470
14829991917,1cyclictest0-21swapper/222:15:132
1482999190,2cyclictest4035-21H222:10:212
1482999190,2cyclictest3989-21H222:10:212
1482999190,18cyclictest0-21swapper/219:44:312
1482999190,18cyclictest0-21swapper/219:44:302
1482999190,16cyclictest3981-21H222:10:212
1482499192,11cyclictest28446-21munin-run19:35:011
14824991917,1cyclictest21-21ksoftirqd/100:39:051
14824991915,3cyclictest25492-21nfsd421:20:181
14824991913,5cyclictest426-21systemd-udevd21:36:521
1482499190,16cyclictest3989-21H222:10:211
1482499190,16cyclictest3987-21H222:10:211
1482499190,16cyclictest3983-21H222:10:211
1482499190,16cyclictest3983-21H222:10:211
1482499190,16cyclictest3976-21H222:10:211
1482099190,18cyclictest0-21swapper/019:50:540
1482099190,16cyclictest3981-21H222:10:210
1482999182,1cyclictest0-21swapper/221:02:512
14829991815,2cyclictest3976-21H222:10:212
14829991815,2cyclictest0-21swapper/223:35:132
14829991814,3cyclictest3987-21H222:10:212
14829991814,3cyclictest3983-21H222:10:212
14829991814,3cyclictest3981-21H222:10:212
1482999181,2cyclictest4035-21H222:10:212
1482999181,2cyclictest12468-21cut21:55:142
1482999180,2cyclictest5654-21python319:50:012
1482999180,2cyclictest4099-21H222:10:212
1482999180,2cyclictest4035-21H222:10:212
1482999180,2cyclictest3991-21H222:10:212
1482999180,2cyclictest3991-21H222:10:212
1482999180,1cyclictest0-21swapper/220:36:592
1482999180,18cyclictest0-21swapper/200:09:492
1482999180,17cyclictest863-21avahi-daemon23:05:202
1482999180,15cyclictest4035-21H222:10:212
1482499182,15cyclictest3989-21H222:10:211
14824991816,1cyclictest21-21ksoftirqd/122:31:291
14824991816,1cyclictest0-21swapper/120:05:111
14824991815,2cyclictest4035-21H222:10:211
14824991815,2cyclictest14214-21perf20:05:011
1482499180,2cyclictest3989-21H222:10:211
1482499180,2cyclictest3976-21H222:10:211
1482499180,17cyclictest0-21swapper/121:40:181
1482499180,16cyclictest3987-21H222:10:211
1482499180,16cyclictest3985-21H222:10:211
1482499180,15cyclictest3987-21H222:10:211
1482499180,15cyclictest3987-21H222:10:211
1482099182,15cyclictest9-21ksoftirqd/000:05:110
1482099182,15cyclictest101rcuc/023:05:180
14820991816,1cyclictest0-21swapper/020:27:380
14820991815,2cyclictest399-20systemd-journal20:35:010
14820991815,2cyclictest12601-21sed21:55:150
14820991814,1cyclictest0-21swapper/023:10:180
1482099181,2cyclictest4602-21nfsd419:45:160
1482099181,16cyclictest28277-21tr21:25:200
1482099180,3cyclictest19681-21idleruntime-cro00:05:000
1482099180,17cyclictest3985-21H222:10:210
1482099180,17cyclictest3976-21H222:10:210
1482099180,16cyclictest3983-21H222:10:210
1482099180,16cyclictest3983-21H222:10:210
1482099180,15cyclictest3976-21H222:10:210
14829991715,1cyclictest3985-21H222:10:212
14829991715,1cyclictest0-21swapper/221:30:142
14829991714,2cyclictest8860-21nfsd422:45:152
14829991714,2cyclictest4298-21pickup19:23:522
14829991714,2cyclictest3991-21H222:10:212
14829991714,2cyclictest31963-21if_enp1s022:30:162
14829991714,2cyclictest26454-21wget22:20:162
14829991714,2cyclictest26454-21wget22:20:162
14829991714,2cyclictest23318-21cpu19:25:152
14829991714,2cyclictest1993-21ls22:35:162
14829991714,2cyclictest15947-21grep23:55:162
14829991713,3cyclictest3985-21H222:10:212
14829991713,3cyclictest14505-21snapd23:47:572
14829991713,1cyclictest0-21swapper/221:25:152
1482999171,15cyclictest4433-21needreboot21:40:192
1482999170,2cyclictest3983-21H222:10:212
1482999170,2cyclictest3979-21H222:10:212
1482999170,2cyclictest16326-21ls21:05:142
1482999170,1cyclictest4099-21H222:10:212
1482999170,16cyclictest5270-21expr20:45:142
1482999170,16cyclictest4035-21H222:10:212
1482999170,16cyclictest3987-21H222:10:212
1482999170,16cyclictest3985-21H222:10:212
1482999170,16cyclictest3983-21H222:10:212
1482999170,16cyclictest387-21sendmail_mailqu00:25:212
1482999170,16cyclictest30145-21cpuspeed_turbos23:25:142
1482999170,16cyclictest22450-21cut23:10:142
1482999170,16cyclictest19986-21grep21:10:182
1482999170,16cyclictest16929-21grep23:00:182
1482999170,16cyclictest1677-21nfsd423:30:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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