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2022-07-06 - 11:54

x86 Intel Core i7-3770K @3500 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, 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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot5.osadl.org (updated Wed Jul 06, 2022 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16521132379360,10sleep140-21swapper/1419:08:196
16519362353335,10sleep150-21swapper/1519:07:327
16522022329311,10sleep50-21swapper/519:08:4211
16515492312294,10sleep80-21swapper/819:05:4814
16518162311289,13sleep00-21swapper/019:07:010
16521112310292,10sleep130-21swapper/1319:08:185
16515382310290,11sleep60-21swapper/619:05:4612
16502982310302,4sleep110-21swapper/1119:05:033
16519562307288,10sleep40-21swapper/419:07:3710
16521512306287,10sleep70-21swapper/719:08:2813
16517042305286,11sleep10-21swapper/119:06:301
16519492300283,9sleep20-21swapper/219:07:358
16523362296278,10sleep90-21swapper/919:09:1815
16520992296278,10sleep100-21swapper/1019:08:152
16517112286267,11sleep30-21swapper/319:06:329
165273899772,37cyclictest0-21swapper/520:10:1511
164850826348,6sleep120-21swapper/1219:04:484
165273899404,11cyclictest0-21swapper/519:15:2011
165273899393,11cyclictest0-21swapper/522:11:0411
165273899393,11cyclictest0-21swapper/519:37:1811
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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