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2022-05-26 - 20:47

x86 Intel Core i3-2310E @2100 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 rack8slot2.osadl.org (updated Fri May 20, 2022 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2126999131123,7cyclictest0-21swapper/119:17:081
2126899124122,1cyclictest0-21swapper/019:14:300
932021210,1sleep00-21swapper/022:51:310
2127099107105,1cyclictest0-21swapper/219:14:302
20815210745,31sleep30-21swapper/319:12:083
20730210745,29sleep00-21swapper/019:11:010
2177521030,0sleep20-21swapper/223:04:402
19064210340,51sleep10-21swapper/119:09:291
159052990,0sleep30-21swapper/323:30:273
99132970,0sleep30-21swapper/322:52:273
2076228946,31sleep20-21swapper/219:11:272
87042870,1sleep10-21swapper/122:19:251
147692720,0sleep30-21swapper/300:37:423
235162410,1sleep00-21swapper/000:11:490
21271994037,1cyclictest0-21swapper/319:17:083
127252380,1chrt12722-21ps00:34:482
213142350,0sleep00-21swapper/021:25:040
25902330,2sleep3331rcuc/321:39:433
11072310,0sleep00-21swapper/000:23:200
5652300,1sleep30-21swapper/321:37:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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