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2023-02-07 - 19:31

ARM Freescale i.MX6UL @528 MHz, 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 10 highest latencies:
System rack5slot7.osadl.org (updated Tue Feb 07, 2023 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19506224032166,184sleep00-21swapper06:29:280
196709917819,129cyclictest23490-21irqstats10:51:540
196709917717,133cyclictest8099-21apt-get10:06:120
196709917618,133cyclictest28624-21df_inode07:16:200
196709917418,127cyclictest11407-21apt-get10:16:040
196709917316,131cyclictest10507-21apt-get11:51:030
196709917211,118cyclictest14739-21/usr/sbin/munin10:27:220
196709917119,25cyclictest20701-21apt-get09:06:060
196709917114,134cyclictest1449-21ntpd11:47:190
196709917019,126cyclictest4037-21users09:52:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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