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2021-10-24 - 01:02

Intel(R) Celeron(R) CPU G1620 @ 2.70GHz, Linux 5.10.35-rt39 (Profile)

Latency plot of system in rack #8, slot #7
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot7.osadl.org (updated Sat Oct 23, 2021 12:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1908399240,20cyclictest3286-21apt-get09:45:211
1908299220,2cyclictest13833-21x2gosqlitewrapp11:10:410
1908299190,1cyclictest246-21systemd-journal09:17:000
1908399170,17cyclictest0-21swapper/111:12:111
19082991715,1cyclictest21325-21x2golistsession07:13:020
19083991614,1cyclictest632-21irqbalance11:54:521
1908399161,14cyclictest632-21irqbalance09:14:311
1908399160,1cyclictest28140-21x2gosqlitewrapp11:49:011
1908399160,16cyclictest0-21swapper/112:18:221
1908399160,15cyclictest0-21swapper/111:25:061
1908299160,1cyclictest573-21cron09:24:550
1908299160,1cyclictest5639-21x2golistsession12:22:320
1908399153,6cyclictest25551-21ssh10:55:071
19083991513,1cyclictest0-21swapper/112:35:261
19083991513,1cyclictest0-21swapper/112:04:121
19083991512,2cyclictest14331-21copy12:30:021
1908399150,15cyclictest0-21swapper/110:29:221
19082991513,1cyclictest21502-21x2golistsession09:33:410
19082991511,3cyclictest13624-21x2gosqlitewrapp09:26:540
1908299150,15cyclictest0-21swapper/011:04:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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