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2022-10-04 - 09:59

x86 Intel Pentium Dual-Core T4500 @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #6, slot #7
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 rack6slot7.osadl.org (updated Tue Oct 04, 2022 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77642700,3sleep01144799cyclictest22:58:070
1145499703,61cyclictest1308-21dbus-daemon22:07:091
1145499674,61cyclictest30148-21diskmemload23:42:061
1145499674,61cyclictest1308-21dbus-daemon21:44:091
1145499664,60cyclictest1318-21NetworkManager00:12:091
1145499664,60cyclictest1308-21dbus-daemon23:52:091
1145499664,60cyclictest1308-21dbus-daemon21:29:091
1145499663,61cyclictest30148-21diskmemload23:09:081
1145499663,61cyclictest1318-21NetworkManager00:24:091
1145499663,61cyclictest1318-21NetworkManager00:21:091
1145499663,61cyclictest1308-21dbus-daemon22:25:091
1145499663,61cyclictest1308-21dbus-daemon22:15:091
1145499663,61cyclictest1308-21dbus-daemon21:56:091
64622650,1sleep00-21swapper/000:08:100
1145499654,59cyclictest1318-21NetworkManager22:21:091
1145499654,59cyclictest1318-21NetworkManager21:20:091
1145499653,61cyclictest0-21swapper/123:41:081
1145499653,61cyclictest0-21swapper/123:03:081
1145499653,61cyclictest0-21swapper/122:27:051
1145499653,61cyclictest0-21swapper/120:45:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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