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2025-04-02 - 04:24
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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 rackfslot7.osadl.org (updated Wed Apr 02, 2025 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2012633997031,39cyclictest0-21swapper/021:27:190
2012633996931,38cyclictest0-21swapper/021:14:340
201264299648,37cyclictest2047976-21kworker/u32:5+flush-8:020:35:153
201265499570,56cyclictest0-21swapper/523:50:125
2012637995435,19cyclictest321rcuc/122:00:151
2012633995416,19cyclictest1089-21snmpd21:46:000
2012664995214,38cyclictest0-21swapper/700:30:177
2012637995214,19cyclictest0-21swapper/123:10:121
2012654995113,19cyclictest0-21swapper/520:10:145
2012654995112,39cyclictest0-21swapper/520:40:175
2012642995132,19cyclictest0-21swapper/319:45:163
2012633995132,19cyclictest0-21swapper/022:56:570
2012633995132,0cyclictest0-21swapper/022:07:000
2012637995012,38cyclictest0-21swapper/120:30:121
2012633995031,19cyclictest0-21swapper/022:34:010
2012633995031,19cyclictest0-21swapper/022:29:080
2012633995031,19cyclictest0-21swapper/022:10:270
2012633995031,19cyclictest0-21swapper/022:02:430
2012654994911,19cyclictest0-21swapper/521:15:165
2012654994911,19cyclictest0-21swapper/519:20:175
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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