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2025-06-17 - 02:07
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Tue Jun 17, 2025 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
240129912190,21cyclictest0-21swapper/000:10:150
240129911280,20cyclictest14-21ksoftirqd/019:35:150
240169911033,66cyclictest0-21swapper/123:45:141
240129911081,19cyclictest14-21ksoftirqd/023:25:180
240129911078,21cyclictest14-21ksoftirqd/021:45:150
2342721105,36sleep1514-21snmpd19:05:441
240129910978,20cyclictest14-21ksoftirqd/020:55:140
240129910913,80cyclictest0-21swapper/021:40:160
240129910674,21cyclictest14-21ksoftirqd/019:30:170
240129910611,82cyclictest0-21swapper/019:45:140
240129910372,18cyclictest14-21ksoftirqd/023:05:130
240129910212,75cyclictest0-21swapper/019:40:130
24012991018,85cyclictest594-21runrttasks21:55:150
240129910137,54cyclictest14-21ksoftirqd/022:50:140
240129910116,73cyclictest0-21swapper/021:05:120
240129910111,73cyclictest0-21swapper/019:55:140
240129910065,21cyclictest14-21ksoftirqd/021:10:120
24012999911,74cyclictest0-21swapper/000:15:140
24012999867,19cyclictest14-21ksoftirqd/020:40:170
24012999867,19cyclictest14-21ksoftirqd/020:40:170
24012999862,23cyclictest14-21ksoftirqd/023:20:160
2401299982,73cyclictest27026-21taskset20:46:280
24012999811,72cyclictest0-21swapper/020:15:160
24012999810,77cyclictest16542-21apt-get20:20:150
24012999762,21cyclictest14-21ksoftirqd/020:50:170
24012999661,21cyclictest14-21ksoftirqd/021:20:170
24012999614,69cyclictest0-21swapper/023:40:160
24012999612,66cyclictest0-21swapper/022:15:150
24012999611,31cyclictest0-21swapper/022:05:150
24012999558,24cyclictest14-21ksoftirqd/019:15:150
24012999513,69cyclictest0-21swapper/022:55:140
24012999512,70cyclictest0-21swapper/023:50:160
24012999511,71cyclictest0-21swapper/022:35:160
24016999440,31cyclictest0-21swapper/121:35:161
24012999417,63cyclictest0-21swapper/022:10:130
24012999414,67cyclictest0-21swapper/022:40:170
24012999412,70cyclictest0-21swapper/020:00:160
24012999412,69cyclictest0-21swapper/021:15:160
24012999412,69cyclictest0-21swapper/019:25:140
24012999412,68cyclictest0-21swapper/021:50:170
24012999411,69cyclictest0-21swapper/000:05:190
24016999345,28cyclictest26-21ksoftirqd/120:50:161
24016999334,38cyclictest26-21ksoftirqd/123:55:121
24016999314,57cyclictest0-21swapper/100:15:131
24012999312,68cyclictest0-21swapper/019:50:150
24012999312,68cyclictest0-21swapper/000:35:140
24012999312,67cyclictest0-21swapper/023:55:120
24012999311,68cyclictest0-21swapper/021:00:140
2401299923,62cyclictest255962sleep019:14:260
24012999213,66cyclictest0-21swapper/019:20:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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