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2024-04-19 - 22:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rack7slot3s.osadl.org (updated Fri Apr 19, 2024 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1772822150,6sleep017729-21/usr/sbin/munin07:07:480
1835399857,50cyclictest0-21swapper/007:27:270
1835399845,66cyclictest0-21swapper/012:32:270
262712780,3sleep00-21swapper/011:22:580
227952780,5sleep31835699cyclictest09:47:373
167762770,5sleep11835499cyclictest10:27:161
26832760,2sleep30-21swapper/310:52:303
195242740,3sleep0101ktimersoftd/011:57:440
1835599743,5cyclictest8050irq/56-dwc_otg_11:32:422
1835399744,39cyclictest1292-21runrttasks11:17:240
286442730,2sleep00-21swapper/012:11:040
286442730,2sleep00-21swapper/012:11:040
1835399721,33cyclictest0-21swapper/008:07:250
249692710,2sleep10-21swapper/112:05:501
18353997143,14cyclictest0-21swapper/011:32:270
1835399703,64cyclictest101ktimersoftd/012:37:270
18353996938,16cyclictest22332-21sh12:02:300
1835399692,46cyclictest0-21swapper/009:52:330
1835399682,45cyclictest0-21swapper/008:12:330
1835699671,51cyclictest21548-21ssh12:01:243
1835699671,44cyclictest15152-21ssh11:09:123
18353996746,2cyclictest0-21swapper/009:27:260
18353996740,13cyclictest5132-21grep08:02:490
18353996736,14cyclictest0-21swapper/008:32:510
22882660,2sleep30-21swapper/311:34:323
1835699665,39cyclictest8150irq/56-dwc_otg_10:37:323
1835699665,39cyclictest8150irq/56-dwc_otg_10:37:323
1835399665,41cyclictest18352-21cyclictest08:57:450
18353996638,14cyclictest17346-21fschecks_count10:27:340
18353996636,15cyclictest0-21swapper/009:07:540
1835699651,46cyclictest2559-21ssh10:04:343
1835699651,46cyclictest2559-21ssh10:04:343
1835699651,43cyclictest6571-21ssh09:24:533
286792640,3sleep211-21rcu_preempt11:27:272
1835699641,48cyclictest17270-21if_eth008:37:363
1835699641,42cyclictest18412-21ssh10:28:003
1835699641,41cyclictest12645-21ssh11:06:583
1835599644,5cyclictest8150irq/56-dwc_otg_11:22:162
18355996412,43cyclictest674-21/usr/sbin/munin09:17:272
1835399648,36cyclictest9-21ksoftirqd/007:32:450
1835699631,44cyclictest17864-21taskset11:56:153
1835699631,44cyclictest12512-21sed09:32:463
1835699631,42cyclictest6081-21rm12:24:433
1835699631,42cyclictest10373-21ssh11:45:523
1835599634,44cyclictest14220-21ssh10:22:352
1835599632,6cyclictest8150irq/56-dwc_otg_09:22:462
1835399634,39cyclictest9-21ksoftirqd/007:52:300
1835399634,13cyclictest0-21swapper/009:02:270
1835399632,32cyclictest23136-21grep07:22:460
18353996313,24cyclictest1292-21runrttasks11:09:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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