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2021-10-24 - 01:19

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 20 highest latencies:
System rackaslot0.osadl.org (updated Sat Oct 23, 2021 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
884321380,2sleep00-21swapper/007:05:280
193432850,0sleep019311-21sshd11:23:220
250112820,0sleep20-21swapper/212:06:502
215632800,1sleep221564-21sshd11:14:222
285502780,0sleep30-21swapper/311:51:493
268222640,0sleep126807-21sshd10:59:311
276092630,0sleep30-21swapper/311:21:003
145402630,1sleep114539-21bash11:32:041
911926226,19sleep10-21swapper/107:08:551
898726125,19sleep20-21swapper/207:07:162
221432600,2sleep322132-21sshd09:36:163
132882600,1sleep313279-21sshd09:17:053
20242580,0sleep32166-21diskmemload09:43:373
48122570,0sleep00-21swapper/011:31:070
95662560,0sleep10-21swapper/110:36:191
82872560,0sleep30-21swapper/310:05:323
124992550,1sleep21785-21runrttasks10:58:082
41842540,1sleep00-21swapper/009:59:090
195302530,1sleep319529-21id10:52:403
155312520,0sleep337-21rcuc/311:59:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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