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2025-11-29 - 06:49
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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 Sat Nov 29, 2025 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3237799230,5cyclictest0-21swapper/223:12:552
3237799222,4cyclictest9005-21apache_processe23:15:112
32377992112,5cyclictest0-21swapper/219:15:212
3237799210,3cyclictest0-21swapper/220:50:142
3236899210,20cyclictest0-21swapper/022:35:170
3237299200,4cyclictest24521-21fschecks_count20:50:161
32368992018,1cyclictest9-21ksoftirqd/022:06:450
3237799194,1cyclictest0-21swapper/220:44:372
3237799192,1cyclictest0-21swapper/219:12:022
3237799192,16cyclictest4523-21H212:26:332
3237799190,18cyclictest0-21swapper/220:31:202
3237799190,16cyclictest4538-21H212:26:332
3237799190,16cyclictest4530-21H212:26:332
3237799190,16cyclictest4530-21H212:26:332
3237799190,15cyclictest0-21swapper/223:43:132
32372991915,3cyclictest4538-21H212:26:331
32372991915,3cyclictest4526-21H212:26:331
32372991914,2cyclictest4526-21H212:26:331
3237299190,1cyclictest0-21swapper/121:18:011
3237299190,1cyclictest0-21swapper/120:18:101
3237299190,16cyclictest4530-21H212:26:331
3236899196,12cyclictest0-21swapper/023:07:350
32368991916,2cyclictest29142-21latency20:00:160
32368991914,3cyclictest7526-21nfsd423:10:190
3236899190,3cyclictest6818-21fschecks_time21:15:150
3236899190,16cyclictest4523-21H212:26:330
3237799182,1cyclictest17050-21if_lxdbr000:25:182
3237799182,15cyclictest28-21ksoftirqd/220:07:182
32377991816,1cyclictest0-21swapper/221:24:592
32377991815,2cyclictest4581-21H212:26:332
32377991815,2cyclictest19950-21apt-get23:35:142
32377991814,3cyclictest4537-21H212:26:332
32377991814,3cyclictest4530-21H212:26:332
32377991814,3cyclictest0-21swapper/223:06:382
3237799181,2cyclictest26266-21cut23:45:152
3237799181,2cyclictest17416-21grep23:30:142
3237799180,4cyclictest0-21swapper/222:01:272
3237799180,2cyclictest4523-21H212:26:332
3237799180,2cyclictest30005-21snapd21:36:362
3237799180,2cyclictest30005-21snapd21:36:352
3237799180,17cyclictest0-21swapper/223:59:552
3237799180,17cyclictest0-21swapper/220:45:162
3237799180,16cyclictest4538-21H212:26:332
3237799180,15cyclictest4528-21H212:26:332
32372991815,2cyclictest4530-21H212:26:331
32372991815,2cyclictest29442-21awk21:55:171
32372991813,2cyclictest4536-21H212:26:331
3237299181,16cyclictest3815-21cat19:15:131
3237299180,2cyclictest4538-21H212:26:331
3237299180,2cyclictest4536-21H212:26:331
3237299180,2cyclictest4534-21H212:26:331
3237299180,2cyclictest4532-21H212:26:331
3237299180,2cyclictest4530-21H212:26:331
3237299180,17cyclictest4776-21lxd23:26:571
3237299180,17cyclictest4532-21H212:26:331
3237299180,17cyclictest4528-21H212:26:331
3237299180,16cyclictest4528-21H212:26:331
3237299180,16cyclictest4526-21H212:26:331
3237299180,15cyclictest4581-21H212:26:331
3236899183,1cyclictest9-21ksoftirqd/020:36:350
3236899182,15cyclictest9-21ksoftirqd/020:57:310
32368991817,0cyclictest0-21swapper/022:50:180
32368991816,1cyclictest9-21ksoftirqd/023:02:110
32368991815,2cyclictest4532-21H212:26:330
32368991813,1cyclictest0-21swapper/019:56:380
3236899180,17cyclictest4581-21H212:26:330
3236899180,17cyclictest4538-21H212:26:330
3236899180,17cyclictest4536-21H212:26:330
3236899180,17cyclictest4532-21H212:26:330
3236899180,17cyclictest4532-21H212:26:330
3236899180,16cyclictest4538-21H212:26:330
3236899180,15cyclictest4538-21H212:26:330
3236899180,15cyclictest4538-21H212:26:330
3236899180,15cyclictest4538-21H212:26:330
3237799179,4cyclictest0-21swapper/221:47:012
32377991714,2cyclictest4538-21H212:26:332
32377991714,2cyclictest4534-21H212:26:332
32377991714,2cyclictest4532-21H212:26:332
32377991714,2cyclictest4532-21H212:26:332
32377991713,3cyclictest4534-21H212:26:332
32377991713,3cyclictest4534-21H212:26:332
3237799171,15cyclictest8885-21cupsd19:38:432
3237799171,15cyclictest4530-21H212:26:332
3237799170,2cyclictest8869-21chrt19:25:052
3237799170,2cyclictest8869-21chrt19:25:042
3237799170,2cyclictest4536-21H212:26:332
3237799170,2cyclictest4536-21H212:26:332
3237799170,2cyclictest4532-21H212:26:332
3237799170,2cyclictest31774-21python321:05:012
3237799170,2cyclictest29216-21/usr/sbin/munin23:50:172
3237799170,1cyclictest4538-21H212:26:332
3237799170,1cyclictest0-21swapper/219:20:202
3237799170,16cyclictest979-21nfsd423:00:192
3237799170,16cyclictest8704-21/usr/sbin/munin20:20:202
3237799170,16cyclictest8376-21memory22:15:172
3237799170,16cyclictest4528-21H212:26:332
3237799170,16cyclictest3973-21uniq21:10:142
3237799170,16cyclictest28739-21cat20:00:122
3237799170,16cyclictest26997-21/usr/sbin/munin21:50:222
3237799170,16cyclictest26622-21apache_accesses20:55:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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