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2026-03-16 - 20:30
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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 rack1slot1.osadl.org (updated Mon Mar 16, 2026 12:45:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4672226156,26sleep30-21swapper/307:06:183
5772204148,42sleep00-21swapper/007:07:280
5392199162,24sleep10-21swapper/107:07:141
310992199160,26sleep20-21swapper/207:05:042
86672570,0sleep38669-21gltestperf08:30:133
23342190,1sleep121-21ksoftirqd/110:40:521
881991715,1cyclictest28-21ksoftirqd/210:10:152
881991614,1cyclictest28-21ksoftirqd/209:05:142
881991614,1cyclictest28-21ksoftirqd/208:45:162
881991514,1cyclictest28-21ksoftirqd/211:35:002
881991512,0cyclictest0-21swapper/208:50:012
888991411,2cyclictest16108-21tail08:45:173
881991413,1cyclictest28-21ksoftirqd/210:15:102
888991312,1cyclictest25996-21sed10:30:153
888991311,1cyclictest26869-21ssh09:50:133
888991311,1cyclictest16430-21tr07:40:153
888991310,2cyclictest28068-21memory09:10:153
888991310,2cyclictest24904-21sed07:55:203
888991310,2cyclictest24586-21head11:10:143
888991310,2cyclictest11411-21apt-get07:30:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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