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2023-04-02 - 04:13

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 10 highest latencies:
System rackcslot1.osadl.org (updated Sun Apr 02, 2023 00:48:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
390799960,90rtkit-daemon0-21swapper/519:06:537
390799840,79rtkit-daemon0-21swapper/1119:09:303
1398128056,7sleep60-21swapper/619:09:538
1375427251,6sleep40-21swapper/419:06:406
1369827161,7sleep30-21swapper/319:05:505
299412700,2sleep21441699cyclictest00:20:014
1394526758,6sleep90-21swapper/919:09:2111
1391026556,6sleep20-21swapper/219:08:504
1388226555,7sleep00-21swapper/019:08:240
1244026556,6sleep80-21swapper/819:05:1910
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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