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2023-02-08 - 05:53

x86 Intel Atom E640 @1000 MHz, Linux 3.18.11-rt7 (Profile)

Latency plot of system in rack #9, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 10 highest latencies:
System rack9slot4.osadl.org (updated Wed Feb 08, 2023 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
195781157128sleep0-21swapper/100:20:411
194431135101sleep0-21swapper/000:20:310
19736991285cyclictest19496-21sshd03:47:250
197369911920cyclictest618-21sshd02:46:230
19736991168cyclictest0-21swapper/005:20:520
197369911428cyclictest0-21swapper/004:36:280
19736991113cyclictest11089-21if_err_eth001:36:150
19736991097cyclictest0-21swapper/004:43:330
19736991088cyclictest0-21swapper/004:10:490
19736991083cyclictest18211-21latency_hist05:30:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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