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2022-07-04 - 23:05

x86 Intel Core i3-4360 CPU @3700 MHz, Linux 5.14.2-rt21 (Profile)

Latency plot of system in rack #0, slot #4
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot4.osadl.org (updated Mon Jul 04, 2022 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
270213211279,26sleep00-21swapper/019:09:190
270058211184,19sleep10-21swapper/119:07:191
270096210870,26sleep30-21swapper/319:07:493
268409210068,24sleep20-21swapper/219:05:032
4591932850,0sleep30-21swapper/323:55:133
270527997321,46cyclictest0-21swapper/123:44:431
270527997110,48cyclictest0-21swapper/100:09:431
3580242690,0sleep30-21swapper/321:53:593
270527996816,49cyclictest0-21swapper/100:34:431
27052799651,30cyclictest0-21swapper/100:19:431
270528996361,1cyclictest376712-21sensors22:15:182
270526996261,1cyclictest464272-21sensors00:00:210
270526996259,2cyclictest2610475-21gnome-shell22:24:590
270529996058,1cyclictest2610475-21gnome-shell00:31:583
27052999600,1cyclictest0-21swapper/321:43:593
270528995958,1cyclictest0-21swapper/222:24:592
270526995958,1cyclictest0-21swapper/019:15:010
270526995956,2cyclictest2610475-21gnome-shell22:45:580
270529995855,2cyclictest2610475-21gnome-shell23:51:583
270528995857,1cyclictest443435-21sensors23:35:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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