You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2022-01-23 - 10:52

Intel(R) Core(TM) i3-2310E CPU @ 2.10GHz, 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 10 highest latencies:
System rack8slot2.osadl.org (updated Sun Jan 23, 2022 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218399129127,1cyclictest0-21swapper/219:12:512
218199114112,1cyclictest0-21swapper/019:12:510
2395121060,1sleep20-21swapper/223:57:452
236562990,0sleep30-21swapper/322:18:093
2182997365,7cyclictest0-21swapper/119:12:511
2183996462,1cyclictest0-21swapper/219:23:102
194382630,0sleep00-21swapper/000:24:570
2184996058,1cyclictest0-21swapper/319:12:513
2181994947,1cyclictest0-21swapper/019:23:100
67532390,1sleep30-21swapper/323:07:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional