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2023-12-07 - 15:04
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot3 (updated Thu Dec 07, 2023 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
316135199650,63cyclictest0-21swapper/100:22:011
3161351996241,20cyclictest3347764-21kworker/1:100:15:261
3161351996240,21cyclictest3286020-21kworker/1:022:55:221
316135199620,61cyclictest0-21swapper/123:12:521
3161351996145,15cyclictest3248975-21kworker/1:122:20:411
3161351996142,18cyclictest3367608-21kworker/1:200:35:251
3161351996141,18cyclictest3248975-21kworker/1:122:15:221
3161351996041,18cyclictest3199299-21kworker/1:021:10:121
3161351995943,15cyclictest3191290-21kworker/1:121:07:271
3161351995942,16cyclictest3219488-21kworker/1:121:55:211
3161351995942,15cyclictest783390-1kworker/1:2H20:10:211
3161351995942,15cyclictest3259181-21kworker/1:222:30:221
3161351995941,17cyclictest3259181-21kworker/1:222:30:001
3161351995856,1cyclictest331-21jbd2/mmcblk0p2-21:40:011
3161351995843,14cyclictest3300531-21kworker/1:123:34:361
3161351995841,16cyclictest3347764-21kworker/1:100:25:231
3161351995841,16cyclictest3181757-21kworker/1:120:15:211
3161351995838,18cyclictest3219488-21kworker/1:121:45:231
3161351995838,18cyclictest3219488-21kworker/1:121:45:221
3161351995743,14cyclictest3181757-21kworker/1:120:27:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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