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2023-02-07 - 20:16

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #a, slot #0
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 rackaslot0.osadl.org (updated Tue Feb 07, 2023 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
535221080,0sleep15354-21sshd09:22:311
231762790,0sleep337-21rcuc/311:01:293
244322630,0sleep00-21swapper/011:21:460
241952600,1sleep324194-21sshd10:01:043
135112600,0sleep20-21swapper/212:03:372
301262580,1sleep330103-21sshd09:31:113
1125125724,18sleep20-21swapper/207:05:102
59652560,1sleep21546-21nfsd10:14:052
57192550,0sleep30-21swapper/310:45:343
272752550,0sleep227277-21fschecks_count10:30:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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