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2022-12-08 - 16:45

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 Wed Dec 07, 2022 12:48:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1510212759,6sleep10-21swapper/107:09:461
3907991080,91rtkit-daemon0-21swapper/707:05:159
62228071,6sleep30-21swapper/307:05:255
125627869,6sleep50-21swapper/507:06:147
141827768,6sleep20-21swapper/207:08:234
146427667,6sleep90-21swapper/907:09:0711
151327264,6sleep40-21swapper/407:09:506
133327061,7sleep110-21swapper/1107:07:213
3250826653,6sleep100-21swapper/1007:05:202
140126645,7sleep00-21swapper/007:08:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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