You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-10-26 - 22:43

Intel(R) Celeron(R) CPU G1620 @ 2.70GHz, Linux 5.4.17-rt9 (Profile)

Latency plot of system in rack #9, 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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack9slot5.osadl.org (updated Tue Oct 26, 2021 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124332570,1sleep012427-21x2golistsession06:44:040
284702480,1sleep128469-21x2golistsession12:01:131
123232190,0sleep10-21swapper/106:43:451
176312170,3sleep11369499cyclictest08:22:241
264599150,1rtkit-daemon2644-21rtkit-daemon09:47:481
264599150,0rtkit-daemon0-21swapper/106:47:341
13694991513,1cyclictest23246-21x2golistsession10:14:491
1369399150,14cyclictest28313-21/usr/sbin/munin11:27:250
264599140,1rtkit-daemon2644-21rtkit-daemon11:05:521
264599140,1rtkit-daemon2644-21rtkit-daemon10:02:160
264599140,1rtkit-daemon2644-21rtkit-daemon06:54:301
264599130,1rtkit-daemon2644-21rtkit-daemon10:55:241
264599130,1rtkit-daemon2644-21rtkit-daemon10:29:121
264599130,0rtkit-daemon2644-21rtkit-daemon06:57:491
258402130,0sleep00-21swapper/011:25:030
1369499130,13cyclictest0-21swapper/111:36:591
1369499130,13cyclictest0-21swapper/110:07:191
1369499130,0cyclictest0-21swapper/111:47:091
1369499130,0cyclictest0-21swapper/111:42:491
1369499130,0cyclictest0-21swapper/110:02:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional