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2026-06-11 - 19:20
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot2.osadl.org (updated Thu Jun 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
234498399197129,52cyclictest171ktimers/010:10:210
234498399197129,52cyclictest171ktimers/010:10:210
234498399191173,11cyclictest171ktimers/012:05:360
234498399175148,17cyclictest171ktimers/010:35:180
234498399153143,6cyclictest81-21hwrng09:14:300
23449869914274,61cyclictest461ktimers/311:45:463
234498699141124,13cyclictest81-21hwrng07:25:583
234498699141124,13cyclictest81-21hwrng07:25:583
2344985991403,107cyclictest2436808-21/usr/sbin/munin10:16:152
2344985991403,107cyclictest2436808-21/usr/sbin/munin10:16:152
23449859913662,62cyclictest2344982-21cyclictest12:05:362
2344986991332,61cyclictest2470157-21ntpq11:01:023
234498699131116,11cyclictest81-21hwrng07:30:043
234498599130119,7cyclictest81-21hwrng11:18:252
234498599130118,8cyclictest81-21hwrng11:08:102
234498599130118,8cyclictest81-21hwrng11:08:102
234498599130117,9cyclictest0-21swapper/212:05:022
234498599130117,9cyclictest0-21swapper/212:05:022
234498699129118,6cyclictest81-21hwrng12:11:403
234498699129118,6cyclictest81-21hwrng12:11:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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