You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2019-07-17 - 00:28

Intel(R) Celeron(R) CPU 3765U @ 1.90GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #8, slot #8
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 rack8slot8.osadl.org (updated Mon Jul 15, 2019 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28969211878,13sleep00-21swapper/019:09:570
28541210283,13sleep10-21swapper/119:05:251
158692500,1sleep10-21swapper/119:55:061
170102490,1sleep016795-40apt-check23:30:110
178872270,1sleep016978-21/usr/sbin/munin00:05:090
2917099180,17cyclictest25869-21if_err_eth020:20:061
2917099180,17cyclictest17366-21/usr/sbin/munin20:00:031
2917099170,16cyclictest31065-21diskmemload22:36:021
2917099160,15cyclictest18617-21/usr/sbin/munin21:15:071
291772150,1sleep10-21swapper/123:43:221
2917099151,7cyclictest326092sh23:12:281
2917099150,14cyclictest9695-21hddtemp_smartct19:40:041
2917099150,14cyclictest7077-21/usr/sbin/munin22:45:081
2917099150,14cyclictest29136-21/usr/sbin/munin22:00:061
2917099150,14cyclictest27471-21/usr/sbin/munin00:15:111
2917099150,14cyclictest16882-21/usr/sbin/munin22:55:111
2917099150,14cyclictest13987-21netstat19:50:081
2917099150,14cyclictest11234-21/usr/sbin/munin21:05:081
2917099150,14cyclictest11187-21/usr/sbin/munin19:45:031
2917099142,9cyclictest23390-21sshd00:10:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional