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2025-12-15 - 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
Characteristics of the 100 highest latencies:
System rackeslot2.osadl.org (updated Sun Dec 14, 2025 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27763752300,2sleep30-21swapper/312:25:013
2393115992624,1cyclictest2462202-21latency_hist08:05:020
2393124992119,1cyclictest0-21swapper/211:25:012
2393116992118,2cyclictest2770366-21grep12:20:011
2393116992017,2cyclictest2673496-21grep11:00:011
2393115992017,2cyclictest2794276-21idleruntime-cro12:40:010
2393124991917,1cyclictest0-21swapper/211:35:002
2393124991916,1cyclictest0-21swapper/210:50:002
2393124991916,1cyclictest0-21swapper/210:25:012
2393116991916,2cyclictest2637275-21/usr/sbin/munin10:30:011
239311599191,9cyclictest2682432-21tr11:08:420
2393115991916,2cyclictest2631003-21gpgconf10:25:010
2393115991913,2cyclictest191rcu_preempt08:00:010
2393115991911,3cyclictest16-21ksoftirqd/011:35:010
2902298180,7rtkit-daemon2016-21snmpd10:44:090
2393116991815,2cyclictest2612523-21gpgconf10:10:011
2393116991815,2cyclictest1326-21systemd-logind11:34:551
2393116991814,3cyclictest1329-21rs:main1
2393115991812,2cyclictest191rcu_preempt11:25:000
2393115991810,2cyclictest191rcu_preempt09:50:000
2649091170,1phc2sys0-21swapper/309:28:393
2649091170,1phc2sys0-21swapper/309:14:563
2393124991714,1cyclictest0-21swapper/210:30:022
2393124991714,1cyclictest0-21swapper/210:10:002
2393124991714,1cyclictest0-21swapper/208:50:012
2393124991714,1cyclictest0-21swapper/208:43:392
2393124991714,1cyclictest0-21swapper/208:40:002
2393124991714,1cyclictest0-21swapper/207:20:012
2393116991714,2cyclictest2449743-21systemd-run07:55:011
2393116991714,2cyclictest2393112-21cyclictest12:25:021
2393116991714,2cyclictest2386431-21kworker/u16:0-ext4-rsv-conversion07:40:001
239311599179,3cyclictest16-21ksoftirqd/008:45:020
239311599179,2cyclictest191rcu_preempt07:28:410
239311599176,7cyclictest2572369-21tr09:38:420
239311599176,4cyclictest2464887-21tr08:08:410
239311599175,7cyclictest1290-21dbus-daemon09:10:010
239311599175,7cyclictest1290-21dbus-daemon09:10:010
239311599174,1cyclictest191rcu_preempt11:50:000
239311599173,7cyclictest2470122-21tr08:13:420
2393115991714,2cyclictest2393112-21cyclictest09:25:020
2393115991714,2cyclictest1327-21in:imuxsock12:00:020
2393115991714,2cyclictest1290-21dbus-daemon12:30:010
2393115991714,2cyclictest1290-21dbus-daemon10:20:010
2393115991712,1cyclictest191rcu_preempt10:13:410
239311599170,6cyclictest2439038-21hddtemp_smartct07:48:380
2393124991613,1cyclictest0-21swapper/211:53:462
2393124991613,1cyclictest0-21swapper/210:35:002
2393124991613,1cyclictest0-21swapper/210:20:012
2393124991613,1cyclictest0-21swapper/209:53:402
2393124991613,1cyclictest0-21swapper/208:58:422
239311699169,5cyclictest257-21systemd-journal08:55:011
2393116991613,2cyclictest2709759-21latency_hist11:30:001
2393116991613,2cyclictest2709759-21latency_hist11:30:001
2393116991613,2cyclictest2696732-21needreboot11:18:441
2393116991612,3cyclictest2735963-21kthreadcore11:53:401
239311599168,3cyclictest16-21ksoftirqd/011:40:020
239311599168,3cyclictest16-21ksoftirqd/010:55:020
239311599167,4cyclictest2605191-21kthreadcore10:03:430
239311599163,7cyclictest2631845-21cpuspeed_turbos10:28:370
239311599163,6cyclictest16-21ksoftirqd/007:18:420
239311599162,9cyclictest16-21ksoftirqd/007:33:430
2393115991613,2cyclictest2776481-21munin-plugin-st12:25:020
2393115991613,1cyclictest241rcuc/010:35:020
2393115991612,2cyclictest2782830-21/usr/sbin/munin12:33:450
239311599160,14cyclictest2764194-21latency_hist12:15:000
2649091151,2phc2sys0-21swapper/310:10:023
2393124991513,1cyclictest0-21swapper/212:38:442
2393124991513,1cyclictest0-21swapper/210:00:012
2393124991513,1cyclictest0-21swapper/207:30:002
2393124991512,1cyclictest0-21swapper/212:03:362
2393124991512,1cyclictest0-21swapper/211:00:002
2393124991512,1cyclictest0-21swapper/210:44:092
2393124991512,1cyclictest0-21swapper/209:03:362
2393124991512,1cyclictest0-21swapper/207:58:402
2393124991512,1cyclictest0-21swapper/207:40:012
2393124991512,1cyclictest0-21swapper/207:25:002
2393116991512,2cyclictest2613227-21/usr/sbin/munin10:13:451
2393116991512,2cyclictest2513493-21kthreadcore08:48:431
2393116991512,2cyclictest1286-21avahi-daemon09:05:011
2393116991512,2cyclictest0-21swapper/111:25:011
2393116991511,3cyclictest2792567-21kthreadcore12:38:431
2393116991511,3cyclictest1326-21systemd-logind09:10:001
2393116991511,3cyclictest1326-21systemd-logind09:10:001
239311599159,1cyclictest191rcu_preempt09:13:370
239311599158,3cyclictest191rcu_preempt08:23:420
239311599157,3cyclictest2757394-21cat12:08:480
239311599157,3cyclictest16-21ksoftirqd/010:00:000
239311599157,3cyclictest16-21ksoftirqd/009:00:010
239311599157,3cyclictest16-21ksoftirqd/007:23:430
239311599157,2cyclictest191rcu_preempt10:58:420
239311599156,3cyclictest16-21ksoftirqd/011:43:420
239311599156,3cyclictest16-21ksoftirqd/011:18:460
239311599154,2cyclictest191rcu_preempt08:18:410
239311599153,2cyclictest191rcu_preempt10:08:370
239311599151,8cyclictest2704309-21find11:28:340
239311599151,8cyclictest2704309-21find11:28:340
2393115991513,1cyclictest2691448-21latency_hist11:15:010
2393115991512,2cyclictest2649343-21munin-plugin-st10:40:000
2393115991512,2cyclictest2564555-21sh09:30:020
2393115991512,2cyclictest2504132-21grep08:40:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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