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2019-07-16 - 02:35

ARMv7 Processor rev 2 (v7l), Linux 3.12.61-rt81 (Profile)

Latency plot of system in rack #4, slot #2
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 rack4slot2.osadl.org (updated Tue Jul 16, 2019 00:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1751299336331cyclictest11345-21copy20:30:420
815501200irq/57-4a1000000-21swapper19:09:390
17512998166cyclictest7257-21apt-get21:55:060
17512997755cyclictest31363-21apt-get21:30:050
17512997661cyclictest15063-21diskstats20:40:160
17512997660cyclictest15504-21munin-run22:20:020
17512997653cyclictest361-21irqstats23:11:130
17512997560cyclictest17965-21/usr/sbin/munin22:25:290
17512997559cyclictest28914-21kworker/u2:223:00:070
17512997557cyclictest3095-21apt-get23:20:080
17512997553cyclictest23690-21ls21:05:270
17512997459cyclictest8702-21ls23:35:220
17512997459cyclictest22659-21fw_forwarded_lo19:25:190
17512997458cyclictest21676-21runrttasks22:36:310
17512997457cyclictest2804-21irqstats21:40:230
17512997457cyclictest19848-21memory19:15:250
17512997457cyclictest16487-21/usr/sbin/munin22:20:340
17512997453cyclictest23986-21wget19:30:080
17512997451cyclictest3068-21munin-run23:20:020
17512997450cyclictest20492-21munin-run22:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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