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2022-10-07 - 18:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 Broadcom BCM2711 @1500 MHz, Linux 5.15.45-rt46-v7l (Profile)

Latency plot of shadow in rack #4, slot #1
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 50 highest latencies:
System rack4slot1s.osadl.org (updated Fri Oct 07, 2022 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2930421210,3sleep30-21swapper/310:34:073
2930421210,3sleep30-21swapper/310:34:073
1195021120,14sleep338-21ksoftirqd/311:57:433
1195021120,14sleep338-21ksoftirqd/311:57:433
1753421080,2sleep00-21swapper/012:03:590
1753421080,2sleep00-21swapper/012:03:590
2898521070,2sleep00-21swapper/011:07:200
2898521070,2sleep00-21swapper/011:07:200
216952960,4chrt0-21swapper/012:07:520
216952960,4chrt0-21swapper/012:07:520
57152870,3sleep00-21swapper/010:43:010
57152870,3sleep00-21swapper/010:43:010
43712870,2chrt0-21swapper/010:07:200
43712870,2chrt0-21swapper/010:07:200
166192870,2sleep00-21swapper/007:47:110
166192870,2sleep00-21swapper/007:47:110
46542860,3chrt0-21swapper/311:50:553
46542860,3chrt0-21swapper/311:50:553
259912820,2sleep30-21swapper/308:12:103
16582820,3sleep00-21swapper/011:47:150
16582820,3sleep00-21swapper/011:47:150
166872790,3chrt0-21swapper/311:28:533
166872790,3chrt0-21swapper/311:28:533
2642997842,24cyclictest31-21ksoftirqd/208:27:042
2642997842,24cyclictest31-21ksoftirqd/208:27:042
166252740,3sleep30-21swapper/312:02:373
166252740,3sleep30-21swapper/312:02:373
79662700,3sleep30-21swapper/310:12:093
79662700,3sleep30-21swapper/310:12:093
2642996929,8cyclictest31-21ksoftirqd/212:37:062
2642996929,8cyclictest31-21ksoftirqd/212:37:062
2642996835,26cyclictest31-21ksoftirqd/208:07:082
2642996835,26cyclictest31-21ksoftirqd/208:07:082
2642996521,9cyclictest31-21ksoftirqd/210:52:082
2642996521,9cyclictest31-21ksoftirqd/210:52:082
48222620,3chrt0-21swapper/310:07:513
48222620,3chrt0-21swapper/310:07:513
263372620,3sleep30-21swapper/311:39:073
263372620,3sleep30-21swapper/311:39:073
301902610,2sleep30-21swapper/309:27:043
252442610,3sleep30-21swapper/312:12:133
252442610,3sleep30-21swapper/312:12:133
241552600,3chrt0-21swapper/310:28:293
241552600,3chrt0-21swapper/310:28:293
226632600,3chrt0-21swapper/009:18:050
226632600,3chrt0-21swapper/009:18:050
70612570,3sleep30-21swapper/312:27:123
70612570,3sleep30-21swapper/312:27:123
264299577,44cyclictest9517-21ssh11:22:062
264299577,44cyclictest9517-21ssh11:22:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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