You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2022-01-23 - 10:36

Intel(R) Core(TM) i3-8145UE CPU @ 2.20GHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, slot #5
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 10 highest latencies:
System rackeslot5.osadl.org (updated Wed Jan 19, 2022 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1398499322,29cyclictest59050irq/126-eno110:41:100
13987993129,1cyclictest18519-21munin-run10:45:013
13987993129,1cyclictest0-21swapper/312:01:193
1398799310,30cyclictest1227-21cat09:31:183
13986993128,2cyclictest24627-21pmu-power10:21:152
1398699310,30cyclictest9596-21wc12:31:042
13985993129,1cyclictest3085-21cat10:31:121
13985993129,1cyclictest0-21swapper/110:20:011
1398599310,30cyclictest6877-21apt-get10:06:091
13984993129,1cyclictest5518-21apt-get09:06:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional