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2026-03-28 - 08:47
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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 rack6slot0.osadl.org (updated Sat Mar 28, 2026 01:02:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3860999226220,2cyclictest0-21swapper/1022:10:172
3860999226220,2cyclictest0-21swapper/1022:10:172
3860999226220,2cyclictest0-21swapper/1022:10:172
3863599203191,10cyclictest0-21swapper/3222:17:2426
3863599203191,10cyclictest0-21swapper/3222:17:2426
3863599203191,10cyclictest0-21swapper/3222:17:2426
386269919679,113cyclictest0-21swapper/2423:00:0017
386269919679,113cyclictest0-21swapper/2423:00:0017
3863599195189,4cyclictest0-21swapper/3219:49:4426
3863599195189,4cyclictest0-21swapper/3219:49:4426
3861799195188,4cyclictest1367-21dbus-daemon00:02:078
3861799195188,4cyclictest1367-21dbus-daemon00:02:078
3861799195188,4cyclictest1367-21dbus-daemon00:02:078
3863599193187,4cyclictest3406-21sshd21:44:0926
3863599193187,4cyclictest3406-21sshd21:44:0926
3863599193187,4cyclictest3406-21sshd21:44:0926
3861499193188,3cyclictest0-21swapper/1422:25:176
3861499193188,3cyclictest0-21swapper/1422:25:176
3864199190179,9cyclictest0-21swapper/3622:25:1630
3864199190179,9cyclictest0-21swapper/3622:25:1630
3863599190181,7cyclictest0-21swapper/3220:14:0326
3863599190181,7cyclictest0-21swapper/3220:14:0326
3862399190184,4cyclictest0-21swapper/2122:50:1814
3862399190184,4cyclictest0-21swapper/2122:50:1814
3862399190184,4cyclictest0-21swapper/2122:50:1814
3863599189148,36cyclictest0-21swapper/3221:04:0226
3863599189148,36cyclictest0-21swapper/3221:04:0226
3862399189180,7cyclictest1360-21systemd-logind21:47:2314
3862399189180,7cyclictest1360-21systemd-logind21:47:2214
3861799188170,14cyclictest755-21systemd-journal21:10:278
3861799188170,14cyclictest755-21systemd-journal21:10:278
3861799188170,14cyclictest755-21systemd-journal21:10:278
3862699187129,42cyclictest0-21swapper/2420:40:1517
3862699187129,42cyclictest0-21swapper/2420:40:1517
3862699187115,69cyclictest0-21swapper/2421:41:3217
3862699187115,69cyclictest0-21swapper/2421:41:3217
3862699187115,69cyclictest0-21swapper/2421:41:3217
3861799187182,4cyclictest0-21swapper/1623:30:418
3861799187182,4cyclictest0-21swapper/1623:30:418
3861799187182,4cyclictest0-21swapper/1623:30:418
3864199186178,6cyclictest0-21swapper/3622:36:0930
3864199186178,6cyclictest0-21swapper/3622:36:0930
3863599186181,3cyclictest0-21swapper/3221:05:1026
3863599186181,3cyclictest0-21swapper/3221:05:1026
3863599186180,4cyclictest0-21swapper/3222:14:1126
3863599186180,4cyclictest0-21swapper/3222:14:1126
3863599186180,4cyclictest0-21swapper/3222:14:1126
3859999186178,5cyclictest36495-21kworker/u80:2-ext4-rsv-conversion22:00:3512
3859999186178,5cyclictest36495-21kworker/u80:2-ext4-rsv-conversion22:00:3512
3859999186178,5cyclictest36495-21kworker/u80:2-ext4-rsv-conversion22:00:3512
3862399184178,4cyclictest0-21swapper/2120:15:0014
3862399184178,4cyclictest0-21swapper/2120:15:0014
3861799184176,5cyclictest0-21swapper/1621:22:318
3861799184176,5cyclictest0-21swapper/1621:22:318
3861799184176,5cyclictest0-21swapper/1621:22:318
3864199183165,14cyclictest0-21swapper/3620:18:5430
3862299183173,5cyclictest37264-21CPU13
3862299183173,5cyclictest37264-21CPU13
3864199182167,8cyclictest171rcu_preempt21:47:3730
3864199182167,8cyclictest171rcu_preempt21:47:3730
3863599182176,5cyclictest0-21swapper/3219:59:2726
3863599182174,6cyclictest0-21swapper/3222:22:0126
3863599182174,6cyclictest0-21swapper/3222:22:0126
3863599182174,6cyclictest0-21swapper/3222:22:0026
3863599182174,6cyclictest0-21swapper/3221:36:4626
3863599182174,6cyclictest0-21swapper/3221:36:4526
3862699182138,38cyclictest0-21swapper/2400:15:0817
3862699182138,38cyclictest0-21swapper/2400:15:0817
3862399182174,6cyclictest3600-21qemu-system-x8622:06:2914
3862399182174,6cyclictest3600-21qemu-system-x8622:06:2814
3862299182172,8cyclictest0-21swapper/2022:30:0113
3862299182172,8cyclictest0-21swapper/2022:30:0113
3863599181137,39cyclictest2447-21CPU26
3863599181137,39cyclictest2447-21CPU26
38626991811,93cyclictest4178-21cat22:05:0117
38626991811,93cyclictest4178-21cat22:05:0117
38626991811,93cyclictest4178-21cat22:05:0117
3862399181173,5cyclictest0-21swapper/2122:05:0114
3862399181173,5cyclictest0-21swapper/2122:05:0114
3862399181173,5cyclictest0-21swapper/2122:05:0114
3859999181174,6cyclictest0-21swapper/223:05:0912
3859999181174,6cyclictest0-21swapper/223:05:0912
3859999181174,6cyclictest0-21swapper/223:05:0812
3862399180173,4cyclictest1-21systemd00:40:0614
3862399180173,4cyclictest1-21systemd00:40:0614
3862299180173,5cyclictest0-21swapper/2021:21:3213
3862299180173,5cyclictest0-21swapper/2021:21:3213
3862299180173,5cyclictest0-21swapper/2021:21:3213
3863599179174,4cyclictest0-21swapper/3220:46:1726
3863599179174,4cyclictest0-21swapper/3220:46:1726
3862399179172,4cyclictest142550irq/47-eno1-TxRx-500:15:1314
3862399179172,4cyclictest142550irq/47-eno1-TxRx-500:15:1314
3862399179168,8cyclictest1367-21dbus-daemon23:11:0814
3862399179168,8cyclictest1367-21dbus-daemon23:11:0814
3862399179168,8cyclictest1367-21dbus-daemon23:11:0814
3864199178162,13cyclictest0-21swapper/3600:35:2630
3864199178162,13cyclictest0-21swapper/3600:35:2630
3864199178162,13cyclictest0-21swapper/3600:35:2530
3863599178172,5cyclictest0-21swapper/3223:19:0926
3863599178172,5cyclictest0-21swapper/3223:19:0926
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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