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2023-02-06 - 14:00

x86 Intel Atom E3845 @1915 MHz, 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 Feb 06, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1325921820,5sleep1302399cyclictest04:54:371
1081621630,5sleep0301899cyclictest04:50:140
717221570,3sleep1302399cyclictest01:50:051
717221570,3sleep1302399cyclictest01:50:051
91191920,3ptp4l401ktimersoftd/323:38:033
100392700,2sleep30-21swapper/304:50:053
291872660,4sleep0301899cyclictest03:59:590
28252645,24sleep233-21ksoftirqd/223:38:292
26482604,10sleep10-21swapper/123:36:101
91191580,1ptp4l401ktimersoftd/303:17:083
91191560,1ptp4l401ktimersoftd/302:44:063
91191550,1ptp4l401ktimersoftd/303:54:293
307872550,2sleep330789-21rm01:40:163
91191540,1ptp4l401ktimersoftd/302:08:023
91191540,0ptp4l401ktimersoftd/302:21:023
28532495,32sleep00-21swapper/023:38:510
3036994722,3cyclictest41-21ksoftirqd/303:01:573
301899473,7cyclictest0-21swapper/000:29:540
231982470,3sleep0301899cyclictest03:18:550
301899462,6cyclictest0-21swapper/002:54:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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