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2021-10-24 - 02:11

ARMv7 Processor rev 2 (v7l), Linux 5.10.47-rt46 (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 Sun Oct 24, 2021 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502520,0irq/46-4a10000031472-1kworker/u3:219:07:400
6349910282,0cyclictest26736-21users23:30:410
6349910274,0cyclictest30846-21df_inode20:34:180
6349910179,0cyclictest17022-21seq23:03:450
6349910080,0cyclictest24328-21irqstats21:49:270
634999979,0cyclictest10612-21ntpdc19:34:280
634999978,0cyclictest28036-21/usr/sbin/munin23:35:160
634999879,0cyclictest4782-21runrttasks00:02:140
634999878,0cyclictest1590-21apt-get22:18:460
634999779,0cyclictest7011-21df00:08:550
634999778,0cyclictest11975-21diskstats19:39:010
634999776,0cyclictest15074-21apt-get19:48:470
634999677,0cyclictest8803-21/usr/sbin/munin21:04:060
634999677,0cyclictest31810-21users22:10:500
634999677,0cyclictest21448-21/usr/sbin/munin23:15:320
634999676,0cyclictest3202-21apt-get20:48:510
634999675,0cyclictest10699-21irqstats22:44:170
634999576,0cyclictest3319-21apt-get22:23:530
634999475,0cyclictest24766-21swap23:24:350
634999471,0cyclictest19240-21meminfo21:34:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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