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2025-07-01 - 08:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6s.osadl.org (updated Tue Jul 01, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94684099849,31cyclictest0-21swapper/223:05:012
94684099747,28cyclictest0-21swapper/221:30:002
946840997414,24cyclictest997882-21/usr/sbin/munin00:10:162
946834997436,32cyclictest968327-21ptp4l-jitter21:10:280
946836997366,5cyclictest0-21swapper/100:10:011
946840997213,30cyclictest0-21swapper/223:20:022
94683499721,61cyclictest0-21swapper/000:15:110
946840997021,43cyclictest0-21swapper/222:55:022
94683699664,27cyclictest951379-21sort19:35:001
946834996641,20cyclictest990614-21munin-plugin-st23:24:590
946834996527,8cyclictest987926-21unixbench_singl23:05:320
94684099640,42cyclictest995030-21/usr/sbin/munin23:50:212
946836996411,26cyclictest0-21swapper/119:15:021
946840996311,20cyclictest0-21swapper/222:00:012
946840996237,12cyclictest0-21swapper/219:25:162
946836996210,42cyclictest22-21rcuc/120:25:221
946834996228,9cyclictest0-21swapper/020:15:360
946834996131,8cyclictest0-21swapper/023:25:300
946834996131,5cyclictest0-21swapper/019:15:020
946840996037,13cyclictest992568-21/usr/sbin/munin23:35:192
946840996036,17cyclictest0-21swapper/220:25:162
946834995935,4cyclictest0-21swapper/000:00:010
946840995845,9cyclictest1001911-21munin-plugin-st00:34:592
946840995837,15cyclictest0-21swapper/223:55:132
946840995836,15cyclictest0-21swapper/200:35:132
946840995833,13cyclictest0-21swapper/221:15:132
94683699582,40cyclictest24-21ksoftirqd/100:05:021
946840995742,8cyclictest967382-21/usr/sbin/munin21:05:292
946840995740,12cyclictest0-21swapper/222:05:152
946840995739,11cyclictest0-21swapper/220:45:152
946840995719,31cyclictest0-21swapper/219:35:222
94683699575,26cyclictest24-21ksoftirqd/121:10:021
946840995621,7cyclictest0-21swapper/222:30:292
946840995538,12cyclictest0-21swapper/221:50:142
946840995538,12cyclictest0-21swapper/221:50:142
946840995537,11cyclictest0-21swapper/220:15:182
946840995536,14cyclictest0-21swapper/220:10:172
94683499551,27cyclictest20950irq/209-8000000.ethernet20:10:000
946840995439,9cyclictest948369-21/usr/sbin/munin19:15:212
946840995433,11cyclictest0-21swapper/219:20:182
946840995410,30cyclictest0-21swapper/220:55:202
94683499541,3cyclictest0-21swapper/019:30:140
94684099539,18cyclictest0-21swapper/221:35:012
946840995343,7cyclictest954008-21sshd19:48:462
946840995343,7cyclictest954008-21sshd19:48:462
946840995340,9cyclictest0-21swapper/223:30:132
946840995338,8cyclictest0-21swapper/200:30:002
946840995338,8cyclictest0-21swapper/200:30:002
946840995336,13cyclictest0-21swapper/220:20:172
946840995335,11cyclictest962931-21/usr/sbin/munin20:40:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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