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2024-02-24 - 00:16

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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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 highest latencies:
System rack7slot3s.osadl.org (updated Fri Feb 23, 2024 15:36:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1249829780,5sleep30-21swapper/314:27:153
13850999368,6cyclictest0-21swapper/015:07:060
13851996662,2cyclictest0-21swapper/115:07:071
13850996016,18cyclictest0-21swapper/014:52:160
1385099582,42cyclictest15499-21cat14:36:450
1385099581,54cyclictest0-21swapper/015:12:060
1385099562,40cyclictest16893-21grep14:37:240
1385099557,45cyclictest0-21swapper/015:27:170
13850995438,8cyclictest0-21swapper/015:16:550
1385099541,32cyclictest26502-21latency_hist15:06:460
1385099541,32cyclictest26502-21latency_hist15:06:460
1385099541,32cyclictest18729-21grep14:42:240
1385099539,25cyclictest9-21ksoftirqd/015:22:230
13850995133,4cyclictest19722-21fschecks_time14:47:110
1385199508,29cyclictest0-21swapper/115:26:501
134072483,12sleep00-21swapper/014:29:360
1385299477,23cyclictest0-21swapper/215:07:082
13850994732,6cyclictest8150irq/56-dwc_otg_15:32:170
1385099472,33cyclictest0-21swapper/014:59:390
1385199443,12cyclictest0-21swapper/115:16:591
1385399437,24cyclictest0-21swapper/315:21:503
1385299427,29cyclictest0-21swapper/215:21:502
1385299421,4cyclictest0-21swapper/214:47:062
9992401,3sleep122283-1kworker/1:1H15:22:241
1385399395,20cyclictest26401-20Xorg15:12:093
13853993927,8cyclictest26950-21/usr/sbin/munin15:07:123
13853993913,6cyclictest20488-21unixbench_multi14:47:233
1385199392,26cyclictest15590-21ls14:36:461
13851993816,5cyclictest23-21ksoftirqd/114:51:451
1385299372,5cyclictest0-21swapper/214:37:072
1385199371,27cyclictest26401-20Xorg15:13:311
1385199364,17cyclictest0-21swapper/114:57:061
13851993610,5cyclictest8050irq/56-dwc_otg_15:02:061
13851993610,5cyclictest8050irq/56-dwc_otg_15:02:061
1385299359,13cyclictest31-21ksoftirqd/215:36:462
1385299356,16cyclictest0-21swapper/215:27:132
1385399341,5cyclictest25915-21tail15:02:243
1385399341,5cyclictest25915-21tail15:02:243
1385299341,24cyclictest0-21swapper/214:52:102
1385399332,6cyclictest0-21swapper/315:35:123
13853993315,4cyclictest17565-21/usr/sbin/munin14:42:053
1385299333,5cyclictest8050irq/56-dwc_otg_15:01:462
1385299321,7cyclictest30256-21idleruntime-cro15:16:452
1385199327,16cyclictest0-21swapper/114:52:101
1385199326,4cyclictest7950irq/56-dwc_otg15:32:201
1385399319,3cyclictest0-21swapper/314:32:103
1385399317,5cyclictest8150irq/56-dwc_otg_14:37:063
1385399317,16cyclictest0-21swapper/314:52:173
13853993111,13cyclictest381ktimersoftd/314:57:053
1385299311,5cyclictest30867-21fschecks_time15:17:202
13852993111,4cyclictest8150irq/56-dwc_otg_15:02:252
13852993111,4cyclictest8150irq/56-dwc_otg_15:02:252
1385199314,18cyclictest0-21swapper/114:42:061
1385399306,5cyclictest7950irq/56-dwc_otg15:17:203
1385399301,7cyclictest7950irq/56-dwc_otg15:27:273
1385299303,12cyclictest8150irq/56-dwc_otg_14:32:122
1385299301,18cyclictest8150irq/56-dwc_otg_14:42:082
1385199306,11cyclictest7950irq/56-dwc_otg14:41:451
133922309,14sleep20-21swapper/214:29:262
133702276,14sleep10-21swapper/114:29:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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