You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-06-17 - 18:57

Intel(R) Core(TM) i3-4330T CPU @ 3.00GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #9, slot #6
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 20 highest latencies:
System rack9slot6.osadl.org (updated Thu Jun 17, 2021 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15094210953,29sleep10-21swapper/107:05:491
14998210151,28sleep30-21swapper/307:05:303
226802810,1sleep20-21swapper/208:35:212
1516527553,17sleep00-21swapper/007:06:440
1452227153,8sleep20-21swapper/207:05:252
1571399220,19cyclictest11046-21munin-run10:40:001
1571399200,18cyclictest0-21swapper/110:40:171
1571599190,16cyclictest0-21swapper/309:10:173
15715991816,1cyclictest0-21swapper/310:40:213
1571399170,14cyclictest14476-21munin-run08:20:001
1571599161,4cyclictest486-21dbus-daemon09:59:593
1571599160,14cyclictest502-21in:imjournal07:20:003
1571599150,3cyclictest0-21swapper/311:14:593
1571599150,13cyclictest438-21firewalld09:50:003
1571599150,13cyclictest18852-21awk08:30:003
1571599150,13cyclictest1-21systemd12:05:003
1571599150,13cyclictest0-21swapper/310:35:263
15715991412,1cyclictest0-21swapper/311:59:373
15715991412,1cyclictest0-21swapper/311:54:573
15715991412,1cyclictest0-21swapper/311:42:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional