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2023-06-08 - 21:40

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 20 highest latencies:
System rack5slot7.osadl.org (updated Thu Jun 08, 2023 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5528224322194,90sleep00-21swapper06:22:450
57799917221,26cyclictest25808-21/usr/sbin/munin11:31:440
57799916830,39cyclictest4913-21unixbench_singl08:51:390
57799916416,21cyclictest28031-21df10:00:300
57799916415,45cyclictest25417-21ssh11:28:280
57799916313,64cyclictest28312-21df08:25:390
57799916217,21cyclictest16038-21fw_conntrack11:00:500
57799916116,59cyclictest27087-21apt-get08:20:230
57799916018,39cyclictest2498-21fw_conntrack10:20:540
57799916016,25cyclictest19296-21apt-get09:35:090
57799916015,22cyclictest31012-21munin-run10:09:460
57799916010,61cyclictest9035-21ssh09:04:490
5779991599,58cyclictest17372-21ssh11:05:130
57799915912,27cyclictest22256-21ssh09:43:230
57799915719,49cyclictest22429-21apt-get11:20:060
57799915718,24cyclictest30318-21ntp_states08:31:200
57799915716,22cyclictest12075-21fw_conntrack06:55:260
57799915710,62cyclictest763-21/usr/sbin/munin10:15:470
57799915615,21cyclictest19140-21munin-run09:34:440
57799915613,57cyclictest24224-21munin-run09:49:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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