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2026-03-10 - 08:48
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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 Tue Mar 10, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22940021100,1sleep00-21swapper/023:39:230
414437921090,1sleep00-21swapper/020:56:470
20290421090,1sleep00-21swapper/023:24:160
1769692430,1sleep30-21swapper/323:10:003
4011156992516,3cyclictest57053-21kthreadcore22:01:471
4011157992420,2cyclictest0-21swapper/221:21:532
4011155992415,5cyclictest134255-21/usr/sbin/munin22:46:500
4011155992214,7cyclictest256851-21latency_hist23:55:020
4011155992213,8cyclictest0-21swapper/022:00:000
4011155992213,5cyclictest294882-21kthreadcore00:16:470
4011155992213,5cyclictest1286-21avahi-daemon22:26:510
4011155992211,6cyclictest0-21swapper/023:46:470
1204872220,2sleep20-21swapper/222:36:492
4011157992117,2cyclictest0-21swapper/223:25:002
4011157992112,5cyclictest0-21swapper/222:30:012
4011156992118,2cyclictest53411-21dump-pmu-power22:00:001
4011155992116,4cyclictest97608-21idleruntime-cro22:25:000
4011155992113,4cyclictest4167910-21latency_hist21:15:000
4011155992112,5cyclictest313314-21kthreadcore00:26:460
4011155992112,5cyclictest182348-21kthreadcore23:11:490
4011155992111,5cyclictest206085-21kthreadcore23:26:460
4011155992111,5cyclictest206085-21kthreadcore23:26:460
4011157992018,1cyclictest0-21swapper/221:20:002
4011157992017,1cyclictest0-21swapper/200:15:002
4011156992017,2cyclictest44631-21/usr/sbin/munin21:55:011
4011156992017,2cyclictest4074285-21cron20:00:001
4011156992017,2cyclictest1327-21in:imuxsock00:40:011
4011156992014,2cyclictest17350irq/127-ahci[0000:00:17.0]00:15:001
4011156992012,3cyclictest0-21swapper/100:30:011
4011155992011,5cyclictest268058-21kthreadcore00:01:460
4011157991917,1cyclictest0-21swapper/221:00:012
4011157991916,1cyclictest0-21swapper/221:05:012
4011157991916,1cyclictest0-21swapper/220:35:002
4011156991910,4cyclictest0-21swapper/100:10:021
401115599199,5cyclictest0-21swapper/021:55:020
401115599196,6cyclictest0-21swapper/023:01:490
401115599195,3cyclictest71168-21munin-run22:10:010
4011155991916,2cyclictest4185547-21perf21:25:000
4011155991916,2cyclictest327575-21latency_hist00:35:010
4011155991911,7cyclictest190342-21kthreadcore23:16:470
4011155991911,4cyclictest72348-21/usr/sbin/munin22:11:470
4011155991911,4cyclictest329227-21cstates00:36:420
4011155991911,4cyclictest234019-21kthreadcore23:41:480
4011155991910,5cyclictest81643-21cpuspeed22:16:410
2649091190,2phc2sys0-21swapper/322:36:273
4011157991816,1cyclictest0-21swapper/222:51:472
4011157991815,1cyclictest0-21swapper/221:56:482
401115799181,10cyclictest0-21swapper/221:50:012
401115699189,4cyclictest0-21swapper/122:56:461
4011156991815,2cyclictest0-21swapper/100:00:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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