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2021-10-24 - 02:41

ARMv7 Processor rev 5 (v7l), Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 rack5slot7.osadl.org (updated Sun Oct 24, 2021 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4238224042172,171sleep00-21swapper18:50:000
5106211790,4sleep03360-1kworker/u3:218:54:060
51219911118,69cyclictest29046-21fw_conntrack00:09:550
51219910619,53cyclictest0-21swapper21:40:260
51219910617,70cyclictest17168-21fw_conntrack21:59:530
51219910415,53cyclictest10817-21ls23:15:540
51219910316,66cyclictest497-21/usr/sbin/munin00:20:550
51219910315,64cyclictest8894-21ls21:35:360
51219910237,46cyclictest0-21swapper19:35:170
51219910220,42cyclictest8125-21munin-run23:09:010
51219910219,43cyclictest19081-21memory22:05:210
51219910217,68cyclictest0-21swapper22:10:280
51219910214,66cyclictest1967-21sh21:15:090
51219910133,51cyclictest0-21swapper22:51:350
51219910118,63cyclictest27405-21irqstats00:05:040
51219910117,52cyclictest0-21swapper21:52:550
51219910116,45cyclictest24055-21irqstats22:20:050
51219910112,27cyclictest13879-21sh23:25:140
51219910111,65cyclictest21805-21ssh23:49:040
51219910036,40cyclictest8756-21ls23:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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