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2025-11-27 - 18:18
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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 Thu Nov 27, 2025 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16776992711,15cyclictest29163-21mii-tool07:30:150
16776992522,2cyclictest24970-21mii-tool11:10:150
1677899230,5cyclictest0-21swapper/210:26:372
1677699230,22cyclictest0-21swapper/010:26:580
1677699220,18cyclictest0-21swapper/007:10:190
1677899210,20cyclictest0-21swapper/209:13:322
1677799204,15cyclictest0-21swapper/109:05:291
1677799200,19cyclictest823-21systemd-network11:25:071
1677699206,13cyclictest0-21swapper/009:48:460
1677699202,3cyclictest0-21swapper/009:30:190
16776992017,2cyclictest4581-21H212:26:330
16778991916,2cyclictest11762-21expr11:45:152
16778991915,1cyclictest0-21swapper/209:30:172
16778991914,2cyclictest4526-21H212:26:332
1677899190,17cyclictest4523-21H212:26:332
1677899190,16cyclictest4526-21H212:26:332
1677899190,16cyclictest4523-21H212:26:332
16777991917,1cyclictest0-21swapper/107:38:561
1677799190,2cyclictest4581-21H212:26:331
1677799190,16cyclictest4530-21H212:26:331
1677699194,1cyclictest0-21swapper/007:23:340
1677699192,2cyclictest9312-21sort10:45:010
1677699192,2cyclictest8569-21sed11:40:010
16776991917,1cyclictest9-21ksoftirqd/011:08:590
1677699190,3cyclictest0-21swapper/010:45:150
1677699190,2cyclictest21756-21latency_hist10:10:000
1677699190,1cyclictest0-21swapper/011:46:110
1677699190,18cyclictest414-20systemd-journal10:00:010
1677699190,16cyclictest4526-21H212:26:330
1677899182,15cyclictest31158-21idleruntime08:30:152
1677899182,15cyclictest29657-21dpkg11:20:132
1677899182,15cyclictest28-21ksoftirqd/207:38:322
16778991816,1cyclictest12586-21processes09:50:202
16778991816,1cyclictest12586-21processes09:50:192
16778991815,2cyclictest4528-21H212:26:332
16778991814,3cyclictest4528-21H212:26:332
16778991814,3cyclictest0-21swapper/210:13:472
1677899181,2cyclictest25663-21processes11:10:182
1677899181,16cyclictest17781-21smtpd08:05:262
1677899181,16cyclictest17781-21smtpd08:05:252
1677899181,16cyclictest17692-21sh09:05:002
1677899180,15cyclictest4530-21H212:26:332
1677799182,1cyclictest0-21swapper/108:20:161
1677799182,15cyclictest0-21swapper/111:51:581
16777991816,1cyclictest0-21swapper/112:25:141
16777991816,1cyclictest0-21swapper/107:25:341
16777991814,2cyclictest4528-21H212:26:331
16777991814,2cyclictest4528-21H212:26:331
16777991814,2cyclictest4526-21H212:26:331
1677799181,2cyclictest970-21dbus-daemon12:20:001
1677799181,2cyclictest5003-21cat12:30:141
1677799181,1cyclictest0-21swapper/110:55:181
1677799180,3cyclictest4528-21H212:26:331
1677799180,2cyclictest4593-21H212:26:331
1677799180,2cyclictest4532-21H212:26:331
1677799180,2cyclictest4530-21H212:26:331
1677799180,2cyclictest4530-21H212:26:331
1677799180,17cyclictest4532-21H212:26:331
1677799180,17cyclictest4523-21H212:26:331
1677799180,16cyclictest4530-21H212:26:331
1677699182,1cyclictest0-21swapper/011:20:210
1677699182,15cyclictest4532-21H212:26:330
16776991816,1cyclictest9-21ksoftirqd/009:41:240
16776991814,3cyclictest1405-21lxd10:35:060
1677699181,2cyclictest12347-21awk09:50:180
1677699181,2cyclictest12347-21awk09:50:180
1677699181,16cyclictest0-21swapper/010:00:120
1677699180,3cyclictest25141-21sed12:10:000
1677699180,2cyclictest4538-21H212:26:330
1677699180,2cyclictest4528-21H212:26:330
1677699180,2cyclictest4526-21H212:26:330
1677699180,17cyclictest4528-21H212:26:330
1677699180,15cyclictest4534-21H212:26:330
1677699180,15cyclictest4534-21H212:26:330
16778991715,1cyclictest30130-21timerandwakeup07:30:222
16778991715,1cyclictest0-21swapper/209:48:082
16778991715,1cyclictest0-21swapper/209:44:132
16778991715,1cyclictest0-21swapper/208:02:262
16778991714,2cyclictest25098-21cut10:15:142
16778991714,2cyclictest1405-21lxd10:03:062
1677899171,15cyclictest18958-21timerwakeupswit07:10:232
1677899170,2cyclictest4538-21H212:26:332
1677899170,2cyclictest4534-21H212:26:332
1677899170,2cyclictest4528-21H212:26:332
1677899170,2cyclictest4244-21dpkg08:40:022
1677899170,2cyclictest3282-21pzem_power12:25:182
1677899170,2cyclictest2919-21grep11:30:142
1677899170,2cyclictest28614-21chrt09:22:322
1677899170,2cyclictest28481-21cat08:25:142
1677899170,2cyclictest26973-21nfsd412:10:192
1677899170,2cyclictest2495-21switchtime08:35:202
1677899170,2cyclictest24678-21find12:09:002
1677899170,2cyclictest22967-21netstat08:15:192
1677899170,2cyclictest18344-21ntp_states11:55:182
1677899170,2cyclictest14643-21cat11:50:132
1677899170,2cyclictest11135-21nfsd408:50:202
1677899170,16cyclictest4675-21/usr/sbin/munin12:30:182
1677899170,16cyclictest4593-21H212:26:332
1677899170,16cyclictest4528-21H212:26:332
1677899170,16cyclictest4523-21H212:26:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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