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2026-01-10 - 21:23
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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 Jan 10, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2726999220,4cyclictest0-21swapper/010:21:270
2726999220,4cyclictest0-21swapper/007:40:050
2726999220,21cyclictest843-21systemd-network11:16:020
2726999220,21cyclictest843-21systemd-network11:16:020
2727399210,16cyclictest2926-21sessionclean12:09:002
2727399204,15cyclictest4035-21H222:10:212
2727399204,15cyclictest4035-21H222:10:212
2727399204,15cyclictest28-21ksoftirqd/211:51:312
2727399202,11cyclictest10728-21perf10:30:002
27273992017,2cyclictest27106-21switchtime09:00:212
27273992012,7cyclictest843-21systemd-network11:30:272
27271992017,2cyclictest3987-21H222:10:211
2727399192,2cyclictest31833-21needreboot07:15:172
2727399190,16cyclictest3991-21H222:10:212
2727399190,16cyclictest3985-21H222:10:212
2727399190,16cyclictest3985-21H222:10:212
2727399190,16cyclictest3983-21H222:10:212
2727399190,16cyclictest3983-21H222:10:212
2727399190,16cyclictest3979-21H222:10:212
2727199193,15cyclictest0-21swapper/109:25:001
2727199192,2cyclictest0-21swapper/108:25:181
2727199192,1cyclictest0-21swapper/109:29:551
2727199192,16cyclictest3979-21H222:10:211
27271991914,2cyclictest3976-21H222:10:211
2727199190,18cyclictest0-21swapper/111:40:131
2727199190,16cyclictest3981-21H222:10:211
2727199190,16cyclictest3979-21H222:10:211
2727199190,16cyclictest3979-21H222:10:211
27269991917,1cyclictest9-21ksoftirqd/007:35:290
2726999190,16cyclictest3981-21H222:10:210
2727399182,2cyclictest3979-21H222:10:212
2727399182,15cyclictest3983-21H222:10:212
2727399182,15cyclictest14035-21chrt08:39:542
2727399182,15cyclictest0-21swapper/207:56:572
2727399182,15cyclictest0-21swapper/207:40:232
27273991816,1cyclictest0-21swapper/207:32:222
27273991815,2cyclictest3991-21H222:10:212
27273991815,2cyclictest24853-21latency08:00:172
27273991815,2cyclictest0-21swapper/212:15:172
27273991814,3cyclictest3985-21H222:10:212
27273991814,3cyclictest3441-21packagekitd11:02:332
27273991814,2cyclictest30825-21nfsd408:10:162
2727399181,2cyclictest0-21swapper/211:05:212
2727399180,3cyclictest0-21swapper/209:20:172
2727399180,17cyclictest3987-21H222:10:212
2727399180,17cyclictest3983-21H222:10:212
2727399180,16cyclictest4099-21H222:10:212
2727399180,16cyclictest4099-21H222:10:212
2727399180,16cyclictest4099-21H222:10:212
2727199182,15cyclictest29785-21cat09:05:231
2727199182,15cyclictest246542sleep108:56:031
27271991816,1cyclictest0-21swapper/110:30:011
27271991816,1cyclictest0-21swapper/107:25:011
27271991816,1cyclictest0-21swapper/107:25:011
27271991814,3cyclictest3985-21H222:10:211
27271991814,3cyclictest3983-21H222:10:211
27271991814,3cyclictest3981-21H222:10:211
27271991814,3cyclictest2007-21systemd-journal10:23:001
27271991814,3cyclictest1525-21lxd11:08:411
27271991814,3cyclictest0-21swapper/108:06:251
2727199180,2cyclictest3991-21H222:10:211
2727199180,2cyclictest3987-21H222:10:211
2727199180,17cyclictest4035-21H222:10:211
2727199180,17cyclictest3989-21H222:10:211
2727199180,16cyclictest3983-21H222:10:211
2727199180,16cyclictest3983-21H222:10:211
2726999183,14cyclictest0-21swapper/012:31:420
27269991817,1cyclictest9-21ksoftirqd/011:31:490
27269991815,2cyclictest3987-21H222:10:210
27269991814,3cyclictest0-21swapper/010:37:010
27269991814,3cyclictest0-21swapper/007:50:210
2726999181,16cyclictest2957-21rtkit-daemon07:15:540
2726999180,3cyclictest4099-21H222:10:210
2726999180,3cyclictest3976-21H222:10:210
2726999180,2cyclictest3991-21H222:10:210
2726999180,2cyclictest3991-21H222:10:210
2726999180,2cyclictest3987-21H222:10:210
2726999180,2cyclictest3981-21H222:10:210
2726999180,17cyclictest0-21swapper/010:55:150
2726999180,16cyclictest3991-21H222:10:210
2726999180,16cyclictest3985-21H222:10:210
2726999180,16cyclictest3981-21H222:10:210
2726999180,15cyclictest3991-21H222:10:210
2726999180,15cyclictest3987-21H222:10:210
2726999180,15cyclictest3983-21H222:10:210
2726999180,15cyclictest3979-21H222:10:210
27273991715,1cyclictest3991-21H222:10:212
27273991715,1cyclictest28-21ksoftirqd/208:05:232
27273991714,3cyclictest0-21swapper/211:24:332
27273991714,2cyclictest9917-21ls12:20:122
27273991714,2cyclictest920-21cron09:15:012
27273991714,2cyclictest4099-21H222:10:212
27273991714,2cyclictest4035-21H222:10:212
27273991714,2cyclictest3989-21H222:10:212
27273991714,2cyclictest3983-21H222:10:212
27273991714,2cyclictest24600-21vmstat08:55:212
27273991714,2cyclictest18171-21/usr/sbin/munin12:35:132
27273991714,2cyclictest12136-21awk10:30:152
27273991714,2cyclictest0-21swapper/212:31:302
2727399171,15cyclictest3983-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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