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2020-10-28 - 23:43

Intel(R) Xeon(R) CPU E31220L @ 2.20GHz, Linux 3.18.43-rt46-fulldebug (Profile)

Latency plot of system in rack #b, slot #0
Note that this system runs a non-optimized debug kernel.
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: ondemand
The worst-case latency is about 1.94 times higher under graphics load.
Results of all systems with accelerated graphics are combined on this summary graph.
Characteristics of the 20 highest latencies:
System rackbslot0.osadl.org (updated Wed Oct 28, 2020 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2769227338,11sleep00-21swapper/020:57:420
3052727137,11sleep30-21swapper/321:01:343
3037226734,10sleep20-21swapper/220:59:532
3059326247,10sleep10-21swapper/121:02:201
242799500,7rtkit-daemon0-21swapper/122:03:431
242799500,7rtkit-daemon0-21swapper/121:57:161
242799500,1rtkit-daemon0-21swapper/123:04:581
242799490,7rtkit-daemon0-21swapper/123:00:211
242799490,6rtkit-daemon0-21swapper/122:46:211
242799460,7rtkit-daemon0-21swapper/121:59:541
242799460,7rtkit-daemon0-21swapper/121:08:341
242799450,6rtkit-daemon0-21swapper/121:28:211
242799450,6rtkit-daemon0-21swapper/121:22:021
30813994434,7cyclictest0-21swapper/221:46:212
134172430,1sleep313406-21cp00:16:203
30813994232,7cyclictest23244-21modprobe00:09:172
30813994219,20cyclictest1043-21cut00:12:422
30794994225,10cyclictest18602-21sshd00:01:220
242799420,7rtkit-daemon0-21swapper/121:45:121
30813994132,6cyclictest2590-21modprobe01:01:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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