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2026-09-05 - 11:38
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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 Sep 05, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21689992516,9cyclictest0-21swapper/119:30:011
2168999240,19cyclictest0-21swapper/121:14:081
21687992415,0cyclictest0-21swapper/021:40:140
2169199230,5cyclictest0-21swapper/221:53:172
2169199230,18cyclictest0-21swapper/222:40:132
21691992212,1cyclictest0-21swapper/222:05:162
2168999200,15cyclictest0-21swapper/100:10:051
2168799203,16cyclictest0-21swapper/023:05:020
21687992018,1cyclictest0-21swapper/021:35:140
2169199192,2cyclictest15859-21timerwakeupswit20:50:222
21691991916,2cyclictest22211-21perf21:05:002
2169199190,1cyclictest0-21swapper/223:55:132
2169199190,18cyclictest7851-21sessionclean20:39:002
2169199190,16cyclictest24810-21fschecks_count00:00:132
2168999191,17cyclictest14589-21grep23:40:181
2168999190,18cyclictest870-21systemd-logind20:08:511
21687991914,4cyclictest0-21swapper/000:32:060
21687991914,4cyclictest0-21swapper/000:32:050
21691991816,1cyclictest0-21swapper/223:01:142
21691991815,2cyclictest7534-21expr21:35:132
21691991815,2cyclictest3058-21rs:main2
2169199181,2cyclictest0-21swapper/219:15:172
2169199181,16cyclictest3207-21JS22:10:212
2169199180,3cyclictest3414-21master21:57:272
2169199180,3cyclictest30540-21cron21:24:552
2169199180,17cyclictest843-21systemd-network23:07:352
2169199180,17cyclictest0-21swapper/223:10:132
2168999182,15cyclictest292882sleep122:13:081
2168999182,15cyclictest0-21swapper/123:51:141
2168999182,15cyclictest0-21swapper/123:00:001
21689991816,1cyclictest0-21swapper/123:21:271
21689991815,2cyclictest28683-21dpkg23:10:111
21689991815,2cyclictest11536-21netstat23:35:161
21689991814,3cyclictest17264-21cut23:45:171
2168999181,2cyclictest2872-21systemd-logind20:28:521
2168999180,16cyclictest0-21swapper/120:50:021
2168799182,1cyclictest28968-21http_loadtime21:15:140
21687991814,4cyclictest0-21swapper/020:26:100
21687991814,3cyclictest870-21systemd-logind22:28:510
2168799181,2cyclictest3053-21systemd-logind22:06:510
2168799181,2cyclictest30078-21smartctl23:10:190
2168799181,16cyclictest13409-21nfsd422:40:160
21687991810,4cyclictest0-21swapper/022:35:290
21691991715,1cyclictest0-21swapper/223:35:142
21691991715,1cyclictest0-21swapper/222:00:122
21691991715,1cyclictest0-21swapper/200:15:182
21691991715,0cyclictest0-21swapper/221:29:142
21691991714,2cyclictest5416-21grep00:20:212
21691991714,2cyclictest32549-21vmstat19:25:222
21691991714,2cyclictest31345-21nvmesmart_nvme000:10:202
21691991714,2cyclictest30331-21grep22:15:112
21691991714,2cyclictest28250-21cpu21:15:132
21691991714,2cyclictest18700-21/usr/sbin/munin23:50:102
21691991714,2cyclictest17184-21munin-plugin-st22:50:012
21691991714,2cyclictest13593-21ls23:40:132
21691991714,2cyclictest11671-21expr20:45:132
21691991714,2cyclictest10268-21latency_hist23:35:002
2169199170,2cyclictest4253-21ntpq20:30:162
2169199170,2cyclictest399-20systemd-journal20:05:002
2169199170,2cyclictest23014-21sed20:09:012
2169199170,2cyclictest17988-21if_err_lxdbr020:55:162
2169199170,2cyclictest1516-21lxd19:58:502
2169199170,1cyclictest0-21swapper/221:32:572
2169199170,16cyclictest970-21nfsd420:25:182
2169199170,16cyclictest7169-21fschecks_time22:30:172
2169199170,16cyclictest5360-21grep19:35:182
2169199170,16cyclictest31839-21wc20:25:012
2169199170,16cyclictest27782-21fschecks_count22:10:132
2169199170,16cyclictest27530-21fschecks_count00:05:142
2169199170,16cyclictest27530-21fschecks_count00:05:132
2169199170,16cyclictest2117-21cstates23:20:142
2169199170,16cyclictest1523-21lxd19:44:502
2169199170,16cyclictest13762-21expr19:50:182
2169199170,16cyclictest13762-21expr19:50:182
2169199170,16cyclictest1348-21lxd19:32:512
2169199170,16cyclictest10770-21systemctl22:35:192
2169199170,16cyclictest0-21swapper/223:15:172
2169199170,16cyclictest0-21swapper/220:40:132
21689991715,1cyclictest0-21swapper/122:39:301
21689991715,1cyclictest0-21swapper/121:30:031
21689991714,2cyclictest6126-21sed22:30:011
21689991714,2cyclictest5694-21if_eno123:25:171
21689991714,2cyclictest32664-21apache_processe00:15:131
21689991714,2cyclictest32032-21memory21:20:171
21689991714,2cyclictest30831-21nvmesmart_nvme020:20:181
21689991714,2cyclictest28870-21vmstat00:05:211
21689991714,2cyclictest28870-21vmstat00:05:211
21689991714,2cyclictest28613-21expr21:15:131
21689991714,2cyclictest28065-21ntp_states20:15:181
21689991714,2cyclictest28065-21ntp_states20:15:171
21689991714,2cyclictest24359-21expr00:00:131
21689991714,2cyclictest21076-21nfsd421:00:171
21689991714,2cyclictest20599-21cat21:55:201
21689991714,2cyclictest1856-21systemd-udevd20:58:521
21689991714,2cyclictest16243-21tr21:50:151
21689991714,2cyclictest1100-21snmpd22:30:201
21689991714,2cyclictest0-21swapper/100:27:581
21689991712,1cyclictest111rcu_preempt21:05:151
2168999171,15cyclictest0-21swapper/119:15:231
2168999170,2cyclictest3976-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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