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2021-07-26 - 17:59

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 Mon Jul 26, 2021 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244426023,19sleep00-21swapper/007:08:010
90912520,0sleep39087-21cp11:15:013
41932500,1sleep00-21swapper/012:21:190
274012500,0sleep10-21swapper/112:11:071
252725023,9sleep30-21swapper/307:09:003
122525023,8sleep20-21swapper/207:05:222
262552490,0sleep20-21swapper/211:04:012
217442480,0sleep30-21swapper/309:47:283
185622480,0sleep10-21swapper/111:52:001
135924825,9sleep10-21swapper/107:05:241
169972470,1sleep10-21swapper/110:13:491
231642440,1sleep10-21swapper/107:50:181
144512440,0sleep21714-21runrttasks10:09:022
141012430,0sleep327949-21diskmemload10:31:103
93342270,0sleep10-21swapper/111:32:481
2867992019,1cyclictest0-21swapper/209:18:022
322412190,0sleep20-21swapper/211:13:432
2868991917,1cyclictest0-21swapper/309:44:313
286599189,3cyclictest0-21swapper/009:44:350
272672180,1sleep127264-21bash11:21:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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