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2021-06-20 - 02:17

Intel(R) Celeron(R) CPU G1620 @ 2.70GHz, Linux 5.4.17-rt9 (Profile)

Latency plot of system in rack #9, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rack9slot5.osadl.org (updated Sun Jun 20, 2021 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249292440,0sleep10-21swapper/120:39:551
8472400,0sleep10-21swapper/120:52:011
122152400,0sleep1201rcuc/100:07:011
146522390,0sleep00-21swapper/019:40:110
264599370,13rtkit-daemon1376-21/usr/sbin/munin18:47:361
113942182,4sleep00-21swapper/018:50:140
294912160,1sleep0101rcuc/022:32:200
140382160,1sleep10-21swapper/119:38:271
1213499160,15cyclictest28988-21taskset19:14:370
12135991513,1cyclictest29167-21x2golistsession20:00:581
12135991513,1cyclictest21655-21x2gosqlitewrapp19:49:481
1213599150,14cyclictest32713-21x2golistsession22:35:591
12134991513,1cyclictest21753-21sh21:32:570
1213499150,1cyclictest4048-21x2golistsession20:11:070
264599140,1rtkit-daemon2644-21rtkit-daemon23:24:430
1213599130,13cyclictest0-21swapper/121:27:581
1213599130,13cyclictest0-21swapper/100:03:291
1213599130,0cyclictest0-21swapper/122:05:391
1213599130,0cyclictest0-21swapper/121:41:081
1213499130,13cyclictest0-21swapper/022:03:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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