You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-10-26 - 23:58

Intel(R) Core(TM) i5-8365UE CPU @ 1.60GHz, Linux 5.9.1-rt18 (Profile)

Latency plot of system in rack #e, slot #1
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 -n -p90 -i200 -h400 -a2-3 -t2 -q done
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 rackeslot1.osadl.org (updated Fri Oct 15, 2021 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2207490160,15cyclictest0-21swapper/311:00:013
2207490160,15cyclictest0-21swapper/310:20:143
22074901513,1cyclictest0-21swapper/309:45:153
2207490150,15cyclictest0-21swapper/312:38:503
2207490150,15cyclictest0-21swapper/312:21:283
2207490150,15cyclictest0-21swapper/312:11:243
2207490150,15cyclictest0-21swapper/311:48:583
2207490150,15cyclictest0-21swapper/311:17:573
2207490150,15cyclictest0-21swapper/311:09:523
2207490150,15cyclictest0-21swapper/310:00:253
2207490150,15cyclictest0-21swapper/309:34:463
2207490150,15cyclictest0-21swapper/309:04:263
2207490150,15cyclictest0-21swapper/308:42:173
2207490150,15cyclictest0-21swapper/308:32:073
2207490150,15cyclictest0-21swapper/307:25:493
2207490150,0cyclictest0-21swapper/308:16:363
22073901513,1cyclictest0-21swapper/210:20:002
22073901513,1cyclictest0-21swapper/208:35:002
2207390150,1cyclictest0-21swapper/212:15:132
2207390150,1cyclictest0-21swapper/211:35:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional