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2022-07-04 - 22:42

x86 Intel Core i7-3770 @3400 MHz, Linux 3.18.69-rt75 (Profile)

Latency plot of system in rack #8, slot #5
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 rack8slot5.osadl.org (updated Mon Jul 04, 2022 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265027857,8sleep40-21swapper/404:50:314
263327857,8sleep50-21swapper/504:50:165
69027655,8sleep60-21swapper/604:49:536
69127049,8sleep70-21swapper/704:49:547
335299610,58rtkit-daemon0-21swapper/104:50:081
263125746,8sleep30-21swapper/304:50:143
265725332,8sleep20-21swapper/204:50:372
265525342,8sleep00-21swapper/004:50:350
316699200,7cyclictest0-21swapper/710:06:097
316699160,4cyclictest0-21swapper/708:11:567
316699160,4cyclictest0-21swapper/707:00:087
316699160,15cyclictest0-21swapper/706:39:507
316699160,10cyclictest0-21swapper/706:32:577
3165991614,2cyclictest0-21swapper/609:05:246
3165991613,2cyclictest0-21swapper/609:58:536
3165991613,2cyclictest0-21swapper/609:53:436
3165991613,2cyclictest0-21swapper/609:16:506
3165991613,2cyclictest0-21swapper/606:14:576
316199160,15cyclictest0-21swapper/504:54:595
313999160,15cyclictest0-21swapper/110:19:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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