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2023-02-06 - 13:56

x86 Intel Core i7-X990 @3467 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #c, slot #1
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 rackcslot1.osadl.org (updated Mon Feb 06, 2023 00:48:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
390799940,88rtkit-daemon0-21swapper/1119:06:193
1395828273,6sleep00-21swapper/019:05:590
1397628161,6sleep50-21swapper/519:06:167
1409727667,6sleep30-21swapper/319:08:035
1410327465,6sleep90-21swapper/919:08:0911
45672720,2sleep60-21swapper/621:22:448
1186927260,9sleep20-21swapper/219:05:134
1358427056,7sleep10-21swapper/119:05:241
297722690,1sleep40-21swapper/423:35:456
156872670,0sleep40-21swapper/419:10:156
1392226556,6sleep80-21swapper/819:05:3110
1401826455,6sleep40-21swapper/419:06:516
1172826455,6sleep100-21swapper/1019:05:092
58962600,1sleep70-21swapper/722:00:139
1399326050,7sleep70-21swapper/719:06:309
1404625748,6sleep60-21swapper/619:07:178
263962490,1sleep110-21swapper/1100:09:563
1465699313,21cyclictest0-21swapper/123:00:011
1466099295,18cyclictest0-21swapper/222:50:014
1466099274,16cyclictest0-21swapper/223:00:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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