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2026-03-26 - 20:43
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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 Thu Mar 26, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
363730921170,2sleep30-21swapper/309:35:013
38715452960,1sleep13871548-21cut11:51:221
38622972920,2sleep13862301-21cut11:46:211
36186622390,2sleep30-21swapper/309:22:393
3446666993327,3cyclictest1-21systemd10:10:010
3446666992614,8cyclictest1327-21in:imuxsock09:50:020
3446668992320,1cyclictest0-21swapper/209:20:012
3446667992320,2cyclictest3886707-21apt-key12:00:011
3446668992118,1cyclictest0-21swapper/212:21:162
3446668992118,1cyclictest0-21swapper/209:00:002
3446667992117,3cyclictest3768506-21kernelversion10:51:241
344666799211,4cyclictest3748832-21munin-run10:40:011
3446668992018,1cyclictest0-21swapper/211:40:012
3446668992017,1cyclictest0-21swapper/212:40:002
3446667992017,2cyclictest3570305-21apt-key08:50:001
3446667992016,3cyclictest0-21swapper/108:45:001
3446667992014,4cyclictest3453022-21munin-run07:15:011
3446667992013,3cyclictest3732703-21/usr/sbin/munin10:31:281
3446667992012,1cyclictest191rcu_preempt08:20:531
3446667992011,4cyclictest0-21swapper/112:30:001
3446666992017,2cyclictest3852544-21latency_hist11:40:020
3446666992017,2cyclictest3731626-21latency_hist10:30:010
3446668991916,1cyclictest0-21swapper/209:40:012
3446668991916,1cyclictest0-21swapper/209:35:002
3446667991916,2cyclictest0-21swapper/108:35:011
3446667991913,3cyclictest601rcuop/310:22:021
3446667991912,3cyclictest36-21ksoftirqd/112:20:001
344666699199,5cyclictest0-21swapper/009:55:020
344666699199,5cyclictest0-21swapper/009:31:290
3446666991911,4cyclictest3606722-21kthreadcore09:16:250
344666899189,2cyclictest0-21swapper/209:21:182
344666899184,2cyclictest0-21swapper/209:29:122
344666899181,9cyclictest0-21swapper/210:20:012
3446668991816,1cyclictest0-21swapper/212:30:012
3446668991816,1cyclictest0-21swapper/209:55:012
3446668991816,1cyclictest0-21swapper/209:50:022
3446668991815,1cyclictest0-21swapper/212:00:002
3446668991815,1cyclictest0-21swapper/208:36:192
344666799182,3cyclictest191rcu_preempt11:00:011
3446667991815,2cyclictest3895294-21cron12:05:001
3446667991812,2cyclictest3751114-21kthreadcore10:41:241
344666699188,5cyclictest0-21swapper/011:11:250
344666699187,6cyclictest0-21swapper/010:25:010
3446666991815,2cyclictest3860934-21latency_hist11:45:000
3446666991815,2cyclictest3453060-21tail07:15:010
3446666991815,2cyclictest1996-21runrttasks08:35:010
3446666991815,2cyclictest0-21swapper/012:00:000
2649091180,2phc2sys0-21swapper/310:31:503
344666899174,1cyclictest0-21swapper/212:04:222
3446668991714,1cyclictest0-21swapper/211:10:022
3446668991714,1cyclictest0-21swapper/210:45:012
3446668991714,1cyclictest0-21swapper/210:06:162
3446668991714,1cyclictest0-21swapper/210:01:022
3446668991714,1cyclictest0-21swapper/208:00:002
3446668991713,2cyclictest0-21swapper/210:21:252
344666899170,1cyclictest0-21swapper/210:28:472
344666799179,3cyclictest0-21swapper/109:55:011
344666799178,4cyclictest0-21swapper/112:35:011
344666799178,4cyclictest0-21swapper/112:11:231
344666799174,6cyclictest3573003-21tr08:51:241
344666799172,10cyclictest3662945-21kworker/1:1-mm_percpu_wq10:45:531
3446667991714,2cyclictest0-21swapper/111:30:011
3446667991713,3cyclictest3645768-21latency_hist09:40:001
3446667991710,1cyclictest501rcuop/207:50:001
344666699179,6cyclictest0-21swapper/011:25:010
344666699177,5cyclictest0-21swapper/012:26:160
3446666991714,2cyclictest3594782-21latency_hist09:10:010
3446666991714,2cyclictest3546185-21cut08:30:020
3446666991714,2cyclictest3467019-21apt-config07:25:000
3446666991714,2cyclictest3446664-21cyclictest11:01:190
3446666991714,2cyclictest1329-21rs:main0
3446666991711,5cyclictest3760980-21kthreadcore10:46:250
3446666991710,6cyclictest1288-1atopacctd12:10:020
344666699170,13cyclictest0-21swapper/009:35:300
2649091171,6phc2sys0-21swapper/309:16:183
2649091170,3phc2sys0-21swapper/310:01:473
2649091170,2phc2sys0-21swapper/311:24:073
2649091170,2phc2sys0-21swapper/310:14:593
2649091170,2phc2sys0-21swapper/309:40:273
3446668991613,1cyclictest0-21swapper/211:52:192
3446668991613,1cyclictest0-21swapper/210:50:002
3446668991613,1cyclictest0-21swapper/210:31:292
3446668991613,1cyclictest0-21swapper/209:55:122
3446668991613,1cyclictest0-21swapper/208:26:272
3446668991613,1cyclictest0-21swapper/208:10:002
344666799169,3cyclictest191rcu_preempt10:06:231
344666799168,4cyclictest0-21swapper/112:06:171
344666799168,3cyclictest0-21swapper/109:30:001
344666799168,2cyclictest3662945-21kworker/1:1+events_freezable11:11:241
344666799167,3cyclictest501rcuop/208:35:101
344666799167,2cyclictest0-21swapper/111:06:161
344666799167,1cyclictest191rcu_preempt12:20:201
344666799165,3cyclictest3546033-21kworker/u16:3+xprtiod10:01:421
3446667991613,2cyclictest3836506-21sh11:31:201
3446667991613,2cyclictest3824211-21unixbench_singl11:21:301
3446667991611,1cyclictest1109-21hwrng11:15:171
3446667991611,1cyclictest1109-21hwrng10:12:491
344666699169,6cyclictest0-21swapper/010:36:280
344666699168,4cyclictest3596853-21kernelversion09:11:230
344666699168,2cyclictest0-21swapper/011:31:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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