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2025-11-17 - 00:54
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot8.osadl.org (updated Sun Nov 16, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158682330296,21sleep20-21swapper/207:08:462
158542268238,18sleep30-21swapper/307:08:353
159082267235,20sleep00-21swapper/007:09:170
158672263228,23sleep10-21swapper/107:08:451
12162600,0sleep00-21swapper/010:46:270
159812590,0sleep10-21swapper/112:09:331
32512180,0sleep30-21swapper/309:57:133
49252170,0sleep30-21swapper/312:21:563
177092160,0sleep20-21swapper/210:34:282
43722150,0sleep20-21swapper/209:32:562
300882140,0sleep20-21swapper/210:18:422
241092130,0chrt0-21swapper/109:22:501
279322110,0sleep00-21swapper/012:35:420
1610799111,2cyclictest141rcu_preempt07:25:131
107052100,0sleep20-21swapper/209:12:022
107052100,0sleep20-21swapper/209:12:022
161119995,3cyclictest508-21dbus-daemon12:10:002
161119994,3cyclictest19982-21systemd-journal08:28:362
161079997,2cyclictest22-21ksoftirqd/111:40:001
161079994,3cyclictest19982-21systemd-journal08:40:171
161079990,8cyclictest19645-21df09:45:141
161049998,1cyclictest12-21ksoftirqd/007:30:010
23748280,1sleep30-21swapper/310:39:013
161159987,1cyclictest34-21ksoftirqd/312:35:003
161159984,3cyclictest19982-21systemd-journal10:53:493
161159984,3cyclictest19982-21systemd-journal10:27:563
161159984,2cyclictest19982-21systemd-journal11:25:163
161159983,3cyclictest19982-21systemd-journal12:01:223
161159983,3cyclictest19982-21systemd-journal09:34:523
161159983,3cyclictest19982-21systemd-journal08:30:413
161119984,3cyclictest19982-21systemd-journal12:03:272
161119983,3cyclictest19982-21systemd-journal11:00:032
161079984,3cyclictest508-21dbus-daemon09:05:001
161079983,3cyclictest19982-21systemd-journal11:28:251
161079983,3cyclictest19982-21systemd-journal10:09:591
161079983,3cyclictest19982-21systemd-journal08:24:001
161079982,3cyclictest16266-21awk08:20:001
161079981,4cyclictest25493-21cron08:40:001
161049985,2cyclictest508-21dbus-daemon09:41:120
161049982,3cyclictest11738-21rs:main0
161049982,3cyclictest11738-21rs:main0
30355270,2sleep330364-21ssh10:44:513
161159974,2cyclictest508-21dbus-daemon07:26:523
161159973,3cyclictest8955-21apt-get12:05:143
161159973,3cyclictest508-21dbus-daemon12:00:003
161159973,3cyclictest4061-21ntpq07:50:173
161159973,3cyclictest19982-21systemd-journal10:55:033
161159973,3cyclictest19982-21systemd-journal07:59:483
161159973,3cyclictest0-21swapper/311:40:253
161159973,2cyclictest19982-21systemd-journal11:20:163
161159973,2cyclictest19982-21systemd-journal09:39:493
161159972,3cyclictest7661-21lldpd09:07:393
161159972,3cyclictest19982-21systemd-journal12:12:133
161159972,3cyclictest19982-21systemd-journal11:34:153
161159972,3cyclictest19982-21systemd-journal09:15:193
161159972,3cyclictest19982-21systemd-journal08:49:433
161159972,3cyclictest19982-21systemd-journal08:24:553
161119974,2cyclictest9554-21turbostat08:05:012
161119974,2cyclictest508-21dbus-daemon09:21:102
161119974,2cyclictest11736-21in:imuxsock07:38:572
161119973,3cyclictest7661-21lldpd11:07:442
161119973,3cyclictest7661-21lldpd11:07:442
161119973,3cyclictest508-21dbus-daemon12:40:012
161119973,3cyclictest508-21dbus-daemon07:59:492
161119973,3cyclictest26154-21df08:40:162
161119973,3cyclictest19982-21systemd-journal11:15:292
161119973,3cyclictest19982-21systemd-journal09:19:492
161119973,3cyclictest0-21swapper/211:47:492
161119973,1cyclictest0-21swapper/212:23:052
161119973,1cyclictest0-21swapper/210:21:192
161119973,1cyclictest0-21swapper/209:42:342
161119973,1cyclictest0-21swapper/209:28:172
161119972,3cyclictest19982-21systemd-journal12:16:482
161119972,3cyclictest19982-21systemd-journal08:37:462
161119972,3cyclictest0-21swapper/207:49:332
161119970,4cyclictest29979-21latency_hist08:50:002
161119970,4cyclictest24809-21idleruntime-cro12:15:002
161119970,2cyclictest19982-21systemd-journal08:09:242
161079975,2cyclictest22-21ksoftirqd/108:35:001
161079975,1cyclictest22-21ksoftirqd/112:15:001
161079975,1cyclictest22-21ksoftirqd/107:45:001
161079974,2cyclictest508-21dbus-daemon12:17:381
161079974,2cyclictest11736-21in:imuxsock11:30:051
161079973,3cyclictest5705-21ntp_states11:40:191
161079973,3cyclictest508-21dbus-daemon11:50:001
161079973,3cyclictest19982-21systemd-journal12:38:301
161079973,3cyclictest19982-21systemd-journal11:07:091
161079973,3cyclictest19982-21systemd-journal11:07:091
161079973,3cyclictest0-21swapper/111:53:341
161079973,3cyclictest0-21swapper/111:03:051
161079973,1cyclictest0-21swapper/112:30:081
161079973,1cyclictest0-21swapper/112:25:321
161079972,3cyclictest19982-21systemd-journal09:52:031
161079970,6cyclictest0-21swapper/107:34:501
161049974,2cyclictest508-21dbus-daemon09:58:430
161049974,2cyclictest508-21dbus-daemon08:58:130
161049974,2cyclictest29741-11brltty11:31:450
161049974,2cyclictest19982-21systemd-journal11:19:480
161049974,2cyclictest11736-21in:imuxsock10:35:070
161049973,3cyclictest6793-21sshd11:40:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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