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2021-07-26 - 18:55

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt20 (Profile)

Latency plot of system in rack #b, slot #6
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 20 highest latencies:
System rackbslot6.osadl.org (updated Mon Jul 26, 2021 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1140421870,5sleep2544699cyclictest12:25:452
484021820,4sleep3544799cyclictest14:30:503
873911620,5ptp4l401ktimersoftd/309:02:173
124452580,3sleep3401ktimersoftd/311:54:343
154092540,1sleep20-21swapper/213:02:592
49672494,33sleep10-21swapper/109:01:531
70322440,2sleep233-21ksoftirqd/209:05:482
544799408,6cyclictest41-21ksoftirqd/312:07:083
5447994027,6cyclictest41-21ksoftirqd/310:35:433
87391390,1ptp4l401ktimersoftd/314:22:463
87391390,1ptp4l401ktimersoftd/312:10:493
87391390,0ptp4l401ktimersoftd/311:34:023
544799398,5cyclictest41-21ksoftirqd/312:17:353
544799397,5cyclictest41-21ksoftirqd/313:47:403
544799397,5cyclictest41-21ksoftirqd/312:37:573
544799396,5cyclictest41-21ksoftirqd/313:23:393
544799396,5cyclictest41-21ksoftirqd/311:59:343
87391380,1ptp4l401ktimersoftd/314:16:333
87391380,1ptp4l401ktimersoftd/314:14:333
87391380,1ptp4l401ktimersoftd/313:56:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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