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2022-05-26 - 20:25

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 Fri May 20, 2022 00:46:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
437527439,0sleep30-21swapper/319:05:403
465526732,0sleep00-21swapper/019:09:390
455626732,0sleep40-21swapper/419:08:144
465626044,0sleep10-21swapper/119:09:391
466925842,0sleep50-21swapper/519:09:515
462425841,0sleep70-21swapper/719:09:147
463225539,0sleep60-21swapper/619:09:206
450725336,0sleep20-21swapper/219:07:312
391350,0ktimersoftd/30-21swapper/322:54:483
391350,0ktimersoftd/30-21swapper/322:54:473
101350,0ktimersoftd/00-21swapper/022:54:480
101350,0ktimersoftd/00-21swapper/022:54:470
391340,0ktimersoftd/30-21swapper/319:31:523
711330,0ktimersoftd/70-21swapper/723:33:487
631330,0ktimersoftd/60-21swapper/621:29:256
551330,0ktimersoftd/50-21swapper/523:49:265
391330,0ktimersoftd/317811-21grep23:25:173
391330,0ktimersoftd/312308-21ssh23:20:093
391330,0ktimersoftd/30-21swapper/323:33:493
391330,0ktimersoftd/30-21swapper/322:05:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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