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2024-06-26 - 00:26
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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 rack3slot6.osadl.org (updated Tue Jun 25, 2024 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192521160,4chrt1923-21cstates12:15:170
172382940,5chrt17224-21if_enp3s010:00:260
74382920,4chrt7435-21head08:05:180
1899499908,70cyclictest14626-21apt-get08:25:100
287942880,4chrt28795-21cpuspeed_turbos07:35:190
18994998530,48cyclictest20111-21apt-get08:40:150
311512840,4sleep031148-21grep07:40:340
18994998014,60cyclictest405-21dbus-daemon12:29:590
1877028016,26sleep00-21swapper/007:09:020
1899499797,62cyclictest24065-21apt-get10:20:120
1899499797,59cyclictest21904-21apt-get08:45:160
273242780,4chrt27325-21cat07:30:350
1899499788,59cyclictest11767-21apt-get11:15:150
1899499787,61cyclictest7044-21apt-get12:30:140
1899499787,60cyclictest6041-21apt-get11:00:100
1899499777,60cyclictest3763-21apt-get07:55:130
1899499777,60cyclictest18619-21apt-get10:05:130
1899499768,56cyclictest2410-21apt-get09:20:120
1899499767,58cyclictest5992-21apt-get09:30:120
1899499766,60cyclictest29411-21apt-get09:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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