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2023-06-02 - 20:53

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 Fri Jun 02, 2023 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8671225230,14sleep07901-1kworker/u3:206:21:010
94099910417,46cyclictest10480-21apt-get09:00:240
94099910416,48cyclictest7792-21memory08:51:250
94099910311,28cyclictest25629-21aten_r5power_po11:25:390
94099910212,69cyclictest14388-21/usr/sbin/munin10:51:290
94099910118,61cyclictest2488-21users11:51:570
94099910117,23cyclictest2769-21df08:35:520
94099910115,65cyclictest21923-21df_inode09:35:570
94099910018,44cyclictest15593-21df09:15:490
94099910016,65cyclictest2236-21apt-get10:15:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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