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2023-06-03 - 07:27

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 Sat Jun 03, 2023 00:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2515627440,0sleep60-21swapper/619:09:046
2504526732,0sleep20-21swapper/219:07:322
2498526633,0sleep70-21swapper/719:06:417
2501726534,0sleep10-21swapper/119:07:081
2510526426,0sleep30-21swapper/319:08:213
2502125741,0sleep50-21swapper/519:07:115
2503825336,0sleep40-21swapper/419:07:274
2508125033,0sleep00-21swapper/019:08:020
391350,0ktimersoftd/30-21swapper/319:50:263
391350,0ktimersoftd/30-21swapper/300:06:113
711340,0ktimersoftd/70-21swapper/721:16:457
711340,0ktimersoftd/70-21swapper/721:16:447
551340,0ktimersoftd/50-21swapper/521:16:445
551340,0ktimersoftd/50-21swapper/521:16:445
25543993433,0cyclictest0-21swapper/121:16:451
25543993433,0cyclictest0-21swapper/121:16:451
711330,0ktimersoftd/731514-21ssh23:18:177
631330,0ktimersoftd/60-21swapper/621:16:456
631330,0ktimersoftd/60-21swapper/621:16:446
551330,0ktimersoftd/50-21swapper/520:44:295
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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