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2023-03-24 - 03:18

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 Fri Mar 24, 2023 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2644227857,8sleep50-21swapper/513:00:155
2647727756,8sleep40-21swapper/413:00:464
2636827151,7sleep60-21swapper/612:59:126
2647126342,8sleep70-21swapper/713:00:417
2641625535,17sleep00-21swapper/012:59:540
2462425230,9sleep30-21swapper/312:57:333
2645724736,8sleep20-21swapper/213:00:282
2626424636,7sleep10-21swapper/112:57:471
2672199170,1cyclictest0-21swapper/116:06:191
2677199142,7cyclictest0-21swapper/717:50:247
335299110,1rtkit-daemon3351-21rtkit-daemon16:46:040
26755991110,1cyclictest25776-21ssh16:03:075
2671599111,9cyclictest0-21swapper/016:02:080
2677199107,3cyclictest0-21swapper/718:12:597
2677199100,9cyclictest0-21swapper/716:39:177
2676399107,2cyclictest0-21swapper/616:06:466
2675599100,9cyclictest0-21swapper/517:55:205
2674799100,9cyclictest0-21swapper/417:05:584
2673999100,9cyclictest0-21swapper/316:28:563
2672999100,2cyclictest0-21swapper/216:27:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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