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2022-12-04 - 23:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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ARM TI AM3354 @800 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #9, slot #8
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 rack9slot8s.osadl.org (updated Sun Dec 04, 2022 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501640,0irq/46-4a1000002552-21sshd07:09:570
26189910362,0cyclictest19497-21ssh10:35:210
2618999774,0cyclictest18472-21ssh10:33:070
2618999568,0cyclictest6177-21ssh10:11:020
2618999554,0cyclictest9387-21ssh12:15:050
2618999472,0cyclictest14321-21ssh09:26:190
2618999467,0cyclictest9231-21df11:15:330
2618999371,0cyclictest14767-21apt-config11:25:290
2618999268,0cyclictest82050irq/47-4a10000010:21:170
2618999168,0cyclictest10684-21ssh10:19:190
2618999159,0cyclictest18221-21ssh12:31:000
2618999157,0cyclictest27098-21runrttasks09:50:250
2618999071,0cyclictest21766-21sshd09:40:320
2618999069,0cyclictest22832-21/usr/sbin/munin10:41:020
2618999069,0cyclictest17542-21ntp_states08:00:420
2618999065,0cyclictest3004-21memory07:10:330
2618999058,0cyclictest28753-21ntpq11:50:570
2618999057,0cyclictest10380-21sendmail09:20:020
2618999055,0cyclictest6323-21vmstat09:12:020
2618999050,0cyclictest4654-21ssh12:06:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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