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2025-03-20 - 02:27

OSADL QA Farm on Real-time of Mainline Linux

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

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 here to display the system's profile data.
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 20 highest latencies:
System rackfslot7s.osadl.org (updated Wed Mar 19, 2025 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13020359927809,2767cyclictest1344239-21kworker/2:2+events21:35:222
130203999268612,2671cyclictest1323651-21kworker/3:2+events20:20:213
130203299264013,2625cyclictest1368418-21kworker/1:1+events23:00:211
130202999252513,2509cyclictest1352160-21kworker/0:0+events22:00:200
130203599250712,2491cyclictest1326909-21kworker/2:2+events20:29:202
130202999250212,2486cyclictest1333238-21kworker/0:2+events21:00:220
130203299249312,2478cyclictest1320780-21kworker/1:0+events20:52:221
130203299248912,2474cyclictest998-21gnome-shell23:09:581
130202999248712,2471cyclictest1359112-21kworker/0:0+events22:24:450
130202999248511,2470cyclictest1359112-21kworker/0:0+events22:40:220
130202999245211,2437cyclictest1320454-21kworker/0:1+events20:09:440
130203599244811,2434cyclictest998-21gnome-shell21:03:582
130202999244812,2433cyclictest1362895-21kworker/0:2+events22:37:430
13020399924458,2434cyclictest1368527-21kworker/3:1+events23:15:193
130203599243112,2415cyclictest1356145-21kworker/2:1+events22:15:222
130202999242810,2415cyclictest998-21gnome-shell21:36:580
130203599242212,2407cyclictest1290357-21kworker/2:1+events19:16:432
130202999241812,2404cyclictest998-21gnome-shell22:06:580
130203599241411,2399cyclictest1363267-21kworker/2:0+events22:40:462
130203599241312,2397cyclictest1372433-21kworker/2:0+events23:20:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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