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2023-06-09 - 09:00

x86 Intel Core i5-750 @2667 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #8, slot #3
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 rack8slot3.osadl.org (updated Fri Jun 09, 2023 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315492228155,68sleep30-21swapper/319:07:493
299082179160,15sleep20-21swapper/219:05:082
316242174156,14sleep10-21swapper/119:08:401
310642174105,64sleep00-21swapper/019:05:260
272132930,3sleep10-21swapper/100:31:381
312402890,3sleep20-21swapper/221:24:122
237872870,2sleep20-21swapper/200:28:592
300012780,1sleep00-21swapper/021:22:250
266482730,4sleep33198599cyclictest22:55:203
3198399375,31cyclictest0-21swapper/119:45:271
3198399355,29cyclictest0-21swapper/123:45:281
31985993115,15cyclictest0-21swapper/322:25:483
3198399315,25cyclictest0-21swapper/119:40:271
3198499308,21cyclictest0-21swapper/222:33:502
3198499293,25cyclictest0-21swapper/200:12:502
3198399297,21cyclictest0-21swapper/123:56:011
3198499289,18cyclictest0-21swapper/222:08:202
3198499288,19cyclictest0-21swapper/222:50:472
3198499288,19cyclictest0-21swapper/222:38:372
3198499287,20cyclictest0-21swapper/221:54:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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