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2026-07-25 - 23:55
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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 20 highest latencies:
System rackeslot2.osadl.org (updated Sat Jul 25, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140901521150,2sleep30-21swapper/309:11:013
1254541992719,1cyclictest0-21swapper/211:50:022
1254540992618,7cyclictest0-21swapper/107:15:021
1254538992515,6cyclictest1612125-21/usr/sbin/munin11:30:580
125454099241,6cyclictest1330798-21apt-config08:10:021
1254540992316,3cyclictest69250irq/121-eno111:08:061
1254540992316,2cyclictest69250irq/121-eno112:05:021
3240591221,7phc2sys0-21swapper/307:05:513
1254541992219,1cyclictest0-21swapper/211:20:012
1254541992219,1cyclictest0-21swapper/209:25:582
1254540992215,3cyclictest1636590-21kthreadcore11:45:571
125454099221,15cyclictest1426344-21latency_hist09:25:021
1254538992212,5cyclictest0-21swapper/009:50:030
1254541992118,1cyclictest0-21swapper/211:25:012
1254540992113,3cyclictest0-21swapper/112:10:011
1254538992113,7cyclictest0-21swapper/010:00:030
1254538992112,5cyclictest1689803-21kthreadcore12:21:000
1157598210,6rtkit-daemon11561-21sendmail-mta11:51:190
1254541992018,1cyclictest0-21swapper/207:15:012
1254540992017,2cyclictest1626353-21sh11:40:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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