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2026-03-28 - 20:45
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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 rackeslot2.osadl.org (updated Sat Mar 28, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
366344821560,2sleep30-21swapper/312:16:113
36554532980,1sleep03655454-21expr12:11:150
319207899263,4cyclictest1329-21rs:main0
3192078992613,7cyclictest0-21swapper/011:35:010
3192078992516,5cyclictest3541742-21/usr/sbin/munin11:06:210
319207899248,5cyclictest3692521-21kthreadcore12:31:230
3192078992414,6cyclictest1288-1atopacctd09:36:270
319207899237,7cyclictest0-21swapper/010:21:230
3192078992313,2cyclictest3540888-21latency_hist11:05:020
3192078992313,2cyclictest3471984-21cpu10:26:150
3192078992312,3cyclictest3206405-21perf07:20:010
3192078992312,2cyclictest3581045-21kthreadcore11:26:230
3192078992312,2cyclictest3418072-21apt-key09:55:000
319207899231,13cyclictest3672236-21apt-get12:21:160
319207899231,12cyclictest3357013-21munin-run09:20:010
3192078992311,2cyclictest3232285-21irqrtprio07:41:200
3192078992310,4cyclictest3511188-21kthreadcore10:46:220
33930822220,2sleep20-21swapper/209:41:162
3192080992216,2cyclictest134050irq/121-eno111:00:001
3192080992215,3cyclictest3431117-21kthreadcore10:01:221
319207899227,4cyclictest0-21swapper/009:56:190
319207899226,5cyclictest0-21swapper/009:31:550
3192078992213,2cyclictest3267316-21wc08:10:010
3192078992212,2cyclictest3671414-21runrttasks12:20:010
3192078992212,2cyclictest3406772-21mailstats09:46:270
3192078992212,2cyclictest3289112-21kthreadcore08:26:190
3192078992210,4cyclictest0-21swapper/008:35:010
3192084992118,1cyclictest0-21swapper/212:30:002
319207899213,5cyclictest3454665-21expr10:16:160
3192078992113,2cyclictest3333838-21kworker/u16:2-events_unbound09:14:130
3192078992111,2cyclictest3651274-21mailstats12:06:260
3192078992111,2cyclictest3603038-21tr11:41:150
3192078992111,2cyclictest3525256-21irqrtprio10:56:200
319207899210,5cyclictest3627663-21munin-run11:55:000
35653352200,2sleep1341rcuc/111:17:381
32920692200,2sleep136-21ksoftirqd/108:31:181
3192080992011,3cyclictest0-21swapper/109:50:011
319207899201,6cyclictest1290-21dbus-daemon09:05:010
3192078992012,2cyclictest3567010-21systemd-run11:20:020
3192078992011,5cyclictest3515329-21/usr/sbin/munin10:51:200
3192078992011,2cyclictest3326844-21mailstats08:56:270
3192080991916,2cyclictest3267062-21gpgconf08:10:001
319207899196,5cyclictest3337199-21tr09:06:220
3192078991912,6cyclictest3498254-21cpuspeed_turbos10:41:170
3192078991910,5cyclictest3699091-21idleruntime12:36:200
3192078991910,2cyclictest3249842-21gltestperf07:56:190
2649091190,2phc2sys0-21swapper/309:31:533
3192084991816,1cyclictest0-21swapper/211:05:012
319208099189,4cyclictest0-21swapper/110:45:011
3192080991816,1cyclictest0-21swapper/111:46:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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