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2021-09-27 - 07:05

Intel(R) Core(TM) i3-2310E CPU @ 2.10GHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 rack8slot2.osadl.org (updated Mon Sep 27, 2021 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2474999122120,1cyclictest0-21swapper/319:11:043
8802930,0sleep30-21swapper/319:26:303
2429529249,31sleep20-21swapper/219:08:452
2442529148,32sleep10-21swapper/119:10:251
2423329147,32sleep30-21swapper/319:07:583
24747999081,8cyclictest28614-21strings19:16:241
2411828945,32sleep00-21swapper/019:06:300
24747995749,7cyclictest0-21swapper/119:11:041
144092360,1sleep2271rcuc/222:26:222
2474699280,1cyclictest0-21swapper/020:01:140
2474799270,1cyclictest0-21swapper/121:26:301
286992250,1sleep30-21swapper/320:31:193
2474799240,23cyclictest0-21swapper/123:01:161
2474899231,21cyclictest0-21swapper/219:26:162
2474899230,21cyclictest0-21swapper/220:26:162
2474999225,16cyclictest0-21swapper/323:01:163
2474999220,21cyclictest0-21swapper/320:56:153
2474799220,21cyclictest0-21swapper/122:51:131
2474799220,1cyclictest0-21swapper/121:16:261
167702220,0sleep20-21swapper/221:16:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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