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2023-10-03 - 22:32
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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
Characteristics of the 20 highest latencies:
System rack3slot0.osadl.org (updated Tue Oct 03, 2023 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
369325127,8sleep50-21swapper/507:08:435
369524533,8sleep70-21swapper/707:08:457
345324332,8sleep30-21swapper/307:05:283
343424130,8sleep20-21swapper/207:05:112
370524027,9sleep60-21swapper/607:08:526
352724029,8sleep10-21swapper/107:06:311
344124028,8sleep00-21swapper/007:05:170
342624028,9sleep40-21swapper/407:05:054
3846991716,1cyclictest0-21swapper/108:47:291
384699161,15cyclictest25-21ksoftirqd/107:35:301
384699161,15cyclictest25-21ksoftirqd/107:35:301
25732160,0sleep30-21swapper/309:54:313
3846991515,0cyclictest0-21swapper/111:51:491
3846991511,0cyclictest0-21swapper/109:19:541
385099142,6cyclictest16384-21ntp_states11:14:332
385099142,4cyclictest5568-21users10:54:362
385099142,4cyclictest21591-21expr10:29:282
385099142,4cyclictest15442-21grep12:09:342
385099142,4cyclictest15442-21grep12:09:342
384699149,0cyclictest0-21swapper/110:54:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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