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2025-12-01 - 21:52
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Mon Dec 01, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18663682255185,54sleep00-21swapper/007:07:580
18662742238196,27sleep10-21swapper/107:06:581
18666649920011,175cyclictest1956678-21ls10:05:020
1866668991838,160cyclictest1956703-21dpkg10:05:021
1866664991657,143cyclictest1956999-21apt-key10:05:030
1866668991479,126cyclictest1956855-21apt-key10:05:021
125899660,5rtkit-daemon1257-21rtkit-daemon11:30:180
125899490,8rtkit-daemon0-21swapper/109:00:441
20258742450,2sleep12025862-21switchtime11:35:221
19445242440,4sleep00-21swapper/009:48:310
19235602440,4sleep10-21swapper/109:20:201
125899430,3rtkit-daemon0-21swapper/107:51:131
19217832410,1sleep00-21swapper/009:18:200
186666899413,10cyclictest2061246-21apt-get12:25:151
186666499413,10cyclictest2028662-21apt-get11:40:140
186666899403,12cyclictest1892885-21apt-get08:15:141
125899400,9rtkit-daemon1257-21rtkit-daemon12:20:371
186666899393,11cyclictest1877172-21apt-get07:35:131
186666899382,15cyclictest1888989-21apt-get08:05:181
186666899382,15cyclictest1888989-21apt-get08:05:181
125899380,3rtkit-daemon0-21swapper/009:38:071
18919272370,4sleep10-21swapper/108:10:221
186666899354,9cyclictest1964866-21apt-get10:15:121
186666499352,8cyclictest1987711-21apt-get10:45:150
186666899333,9cyclictest1885061-21apt-get07:55:151
186666899323,9cyclictest2009972-21apt-get11:15:151
1866668993230,1cyclictest0-21swapper/108:00:151
1866668993010,3cyclictest141rcu_preempt12:37:011
1866664993027,2cyclictest63750irq/132-enp2s012:09:080
186666899298,3cyclictest141rcu_preempt12:10:181
186666899291,24cyclictest1983890-21apt-get10:40:181
1866664992926,2cyclictest63750irq/132-enp2s009:58:360
186666899288,13cyclictest2036122-21apt-get11:50:171
1866668992826,1cyclictest0-21swapper/108:35:211
186666899281,22cyclictest1897311-21apt-get08:25:201
1866664992825,2cyclictest63750irq/132-enp2s011:06:540
125899280,18rtkit-daemon0-21swapper/012:38:210
186666899271,5cyclictest1914742-21diskmemload10:21:101
1866668992713,9cyclictest1907108-21apt-get08:50:121
1866668992712,9cyclictest2064648-21apt-get12:30:141
1866664992724,2cyclictest63750irq/132-enp2s008:54:520
1866664992717,8cyclictest2009221-21sh11:13:550
125899270,3rtkit-daemon0-21swapper/108:33:341
186666899263,6cyclictest26-21ksoftirqd/111:59:021
1866668992617,7cyclictest2000011-21/usr/sbin/munin11:00:261
186666499265,2cyclictest141rcu_preempt10:40:050
125899260,4rtkit-daemon1257-21rtkit-daemon12:01:361
125899260,16rtkit-daemon13-21ksoftirqd/011:20:350
186666899256,2cyclictest141rcu_preempt11:08:181
186666899252,6cyclictest26-21ksoftirqd/111:29:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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