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2022-10-04 - 03:22

x86 Intel Core i7-3632QM @2200 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #6, slot #3
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 rack6slot3.osadl.org (updated Mon Oct 03, 2022 12:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
920227347,0sleep30-21swapper/307:07:563
906026833,0sleep10-21swapper/107:05:551
907226733,0sleep40-21swapper/407:06:064
904726532,0sleep60-21swapper/607:05:426
922425943,0sleep70-21swapper/707:08:177
935025741,0sleep50-21swapper/507:10:005
931325235,0sleep20-21swapper/207:09:332
922625135,0sleep00-21swapper/007:08:170
971499320,0cyclictest0-21swapper/608:21:446
9697993029,0cyclictest0-21swapper/308:20:153
9697992929,0cyclictest0-21swapper/310:55:193
9697992928,0cyclictest32336-21timerwakeupswit09:00:293
9697992928,0cyclictest0-21swapper/312:10:253
9697992927,0cyclictest0-21swapper/310:25:003
9697992926,0cyclictest0-21swapper/311:09:383
9697992926,0cyclictest0-21swapper/308:50:273
9697992828,0cyclictest27997-21expr10:40:183
9697992828,0cyclictest0-21swapper/311:50:233
9697992827,0cyclictest28576-21fw_conntrack09:35:183
9697992827,0cyclictest22051-21ssh10:00:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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