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2022-01-23 - 19:42

Intel(R) Pentium(R) CPU 2020M @ 2.40GHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #6, slot #2
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
Characteristics of the 10 highest latencies:
System rack6slot2.osadl.org (updated Sun Jan 23, 2022 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116932620,0sleep00-21swapper/007:13:590
197552580,0sleep00-21swapper/009:29:220
100572418,8sleep00-21swapper/007:08:040
887223611,18sleep10-21swapper/107:04:091
10208993433,0cyclictest242750irq/16-enp2s0f012:14:161
10208993433,0cyclictest242750irq/16-enp2s0f011:14:311
10208993433,0cyclictest242750irq/16-enp2s0f010:54:241
10208993433,0cyclictest242750irq/16-enp2s0f008:56:301
10208993433,0cyclictest242750irq/16-enp2s0f008:50:431
10208993433,0cyclictest242750irq/16-enp2s0f008:19:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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