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2023-02-07 - 19:52

x86 Intel Core i3-2310E @2100 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 10 highest latencies:
System rack8slot2.osadl.org (updated Tue Feb 07, 2023 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2246899141139,1cyclictest0-21swapper/307:46:423
2246799138135,2cyclictest0-21swapper/207:46:422
2246899112110,1cyclictest0-21swapper/307:11:303
2246799108105,2cyclictest22502-21apt-get07:11:302
2208129441,41sleep30-21swapper/307:09:563
2208029249,32sleep20-21swapper/207:09:552
2212529148,32sleep00-21swapper/007:10:290
2203929148,32sleep10-21swapper/107:09:221
22465995351,1cyclictest0-21swapper/007:46:420
22466994637,8cyclictest6905-21strings07:46:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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