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2021-04-21 - 00:20

Intel(R) Xeon(R) CPU E3-1220L V2 @ 2.30GHz, 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 Apr 20, 2021 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73262660,1sleep21714-21runrttasks10:37:042
90712590,1sleep00-21swapper/010:29:050
142082560,1sleep21714-21runrttasks11:32:012
8402550,0sleep00-21swapper/010:23:480
68902550,0sleep20-21swapper/209:16:292
82082530,0sleep30-21swapper/312:00:183
63852520,1sleep26378-21sshd10:53:432
3155325121,26sleep10-21swapper/107:05:471
183132510,0sleep30-21swapper/309:18:103
3119425027,19sleep20-21swapper/207:05:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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