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2026-04-02 - 08:16
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4.osadl.org (updated Thu Apr 02, 2026 00:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190982124115,6sleep10-21swapper/119:05:551
192922114102,7sleep30-21swapper/319:08:263
191762112103,6sleep20-21swapper/219:06:562
19241211099,7sleep00-21swapper/019:07:460
240422590,0sleep00-21swapper/022:00:170
283562560,0sleep30-21swapper/321:35:183
145262560,0sleep30-21swapper/322:20:203
255652540,0sleep10-21swapper/100:25:161
153852520,0sleep20-21swapper/223:50:172
1959099328,3cyclictest0-21swapper/221:45:112
1959099291,27cyclictest0-21swapper/220:04:432
1959099291,27cyclictest0-21swapper/219:13:332
1959099291,27cyclictest0-21swapper/200:13:162
1959099290,27cyclictest0-21swapper/220:15:112
1959099282,8cyclictest2858-21/usr/sbin/munin23:40:102
19590992818,9cyclictest749-21snmpd23:00:222
1959099281,26cyclictest0-21swapper/223:27:082
1959099281,26cyclictest0-21swapper/220:41:172
1959099280,27cyclictest0-21swapper/220:37:282
1959099271,25cyclictest0-21swapper/200:28:532
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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