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2021-08-01 - 20:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #4

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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ARMv7 Processor rev 2 (v7l), Linux 4.14.78-rt47-bsp-yocto-am335x-pd19.1.0 (Profile)

Latency plot of shadow in rack #a, slot #4
Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 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 alll highest latencies:
System rackaslot4s.osadl.org (updated Sun Mar 31, 2019 12:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
797501480irq/57-4a1000002921-21seq07:08:090
326699877cyclictest27330-21munin-node0
326699876cyclictest32243-21modprobe11:00:000
326699869cyclictest17626-21runrttasks11:55:010
3266998615cyclictest13862-21seq07:49:370
3266998610cyclictest6187-21munin-node0
326699856cyclictest32452-21munin-node0
3266998522cyclictest15017-21munin-node0
3266998521cyclictest5451-21runrttasks09:21:050
3266998513cyclictest25484-21ls08:35:140
3266998512cyclictest19112-21seq11:59:150
3266998510cyclictest9762-21runrttasks07:35:030
326699849cyclictest1397-21kworker/u2:011:05:010
326699848cyclictest12938-21runrttasks09:50:000
326699846cyclictest7456-21runrttasks11:22:300
326699846cyclictest21689-21runrttasks08:20:240
326699845cyclictest3307-21idleruntime11:10:070
326699845cyclictest31484-21kworker/u2:008:57:580
3266998425cyclictest11450-21munin-node0
3266998419cyclictest25026-21fschecks_time10:35:080
3266998417cyclictest20440-21munin-node0
3266998417cyclictest14308-21runrttasks09:53:490
3266998415cyclictest27632-21seq08:44:460
326699835cyclictest28919-21runrttasks12:29:400
3266998320cyclictest17530-21cstates08:05:050
3266998314cyclictest171282chrt10:05:000
3266998311cyclictest23655-21runrttasks12:12:330
326699827cyclictest30610-21runrttasks10:55:000
326699826cyclictest20216-21runrttasks12:01:260
326699826cyclictest11864-21runrttasks07:42:320
326699825cyclictest18743-21runrttasks10:10:020
3266998217cyclictest3149-21runrttasks11:19:450
3266998210cyclictest290422chrt08:48:340
326699819cyclictest28950-21munin-node0
326699819cyclictest10496-21diskstats09:40:070
326699817cyclictest3149-21runrttasks07:16:510
326699816cyclictest5262-21sshd11:15:160
326699816cyclictest3149-21runrttasks12:21:320
326699816cyclictest15085-21runrttasks11:45:190
326699815cyclictest12062-21runrttasks11:36:160
3266998117cyclictest3091-21sort09:15:100
326699808cyclictest22393-21runrttasks12:09:250
326699805cyclictest20644-21runrttasks10:16:320
326699798cyclictest24849-21munin-node0
326699797cyclictest4579-21seq09:20:020
326699796cyclictest9162-21runrttasks11:27:580
326699795cyclictest29975-21chrt12:31:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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