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2025-05-02 - 12:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #2

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 or here to proceed to next system.
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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot2s.osadl.org (updated Fri May 02, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3153412250211,13sleep60-21swapper/619:08:596
315834992470,246cyclictest437100-21kworker/u20:6+efi_rts_wq22:40:139
3152872244222,15sleep80-21swapper/819:08:408
3150902243201,14sleep90-21swapper/919:07:319
315817992410,240cyclictest462432-21kworker/u20:2+efi_rts_wq23:30:144
315832992390,238cyclictest318073-21kworker/u20:0+efi_rts_wq19:15:148
315809992380,237cyclictest312422-21kworker/u20:4+efi_rts_wq19:20:132
3151372238217,14sleep50-21swapper/519:07:485
3153902237216,14sleep20-21swapper/219:09:142
3151842236215,14sleep10-21swapper/119:08:031
315814992350,234cyclictest363781-21kworker/u20:5+efi_rts_wq20:25:153
315822992340,233cyclictest360209-21kworker/u20:0+efi_rts_wq20:20:165
315817992340,233cyclictest398508-21kworker/u20:0+efi_rts_wq21:50:134
315817992340,233cyclictest398508-21kworker/u20:0+efi_rts_wq21:50:134
3153732234215,12sleep70-21swapper/719:09:107
3150392234213,14sleep30-21swapper/319:07:153
3148022234213,13sleep40-21swapper/419:05:554
3150652233213,13sleep00-21swapper/019:07:230
315814992320,231cyclictest388940-21kworker/u20:2+efi_rts_wq21:05:143
315807992320,231cyclictest376840-21kworker/u20:3+efi_rts_wq21:45:151
315807992320,231cyclictest376840-21kworker/u20:3+efi_rts_wq21:45:141
315814992310,230cyclictest281787-21kworker/u20:2+efi_rts_wq19:30:133
315817992300,229cyclictest424641-21kworker/u20:3+efi_rts_wq22:05:164
315817992290,228cyclictest281787-21kworker/u20:2+efi_rts_wq20:15:154
315807992290,228cyclictest398508-21kworker/u20:0+efi_rts_wq21:20:181
315832992280,227cyclictest305157-21kworker/u20:1+efi_rts_wq19:35:128
315824992280,227cyclictest376840-21kworker/u20:3+efi_rts_wq21:25:166
315817992280,227cyclictest437100-21kworker/u20:6+efi_rts_wq22:40:134
315827992230,222cyclictest376840-21kworker/u20:3+efi_rts_wq21:15:137
315832992220,221cyclictest281787-21kworker/u20:2+efi_rts_wq20:40:188
315822992220,221cyclictest398508-21kworker/u20:0+efi_rts_wq21:35:155
315803992220,221cyclictest376840-21kworker/u20:3+efi_rts_wq20:50:150
315834992210,220cyclictest325553-21kworker/u20:6+efi_rts_wq19:55:169
315807992210,220cyclictest376840-21kworker/u20:3+efi_rts_wq20:50:151
315807992190,218cyclictest456590-21kworker/u20:0+efi_rts_wq23:10:121
315814992180,217cyclictest462432-21kworker/u20:2+efi_rts_wq23:35:133
315803992170,216cyclictest462432-21kworker/u20:2+efi_rts_wq23:30:150
315817992120,211cyclictest437100-21kworker/u20:6+efi_rts_wq22:35:124
315809992120,211cyclictest437101-21kworker/u20:7+efi_rts_wq22:30:142
315817992110,210cyclictest450621-21kworker/u20:1+efi_rts_wq22:50:154
315822992090,208cyclictest516657-21kworker/u20:2+efi_rts_wq00:25:135
315817992090,208cyclictest398508-21kworker/u20:0+efi_rts_wq22:00:134
315809992070,206cyclictest281787-21kworker/u20:2+efi_rts_wq20:10:152
315803992070,206cyclictest388940-21kworker/u20:2+efi_rts_wq21:10:150
315814992050,204cyclictest516657-21kworker/u20:2+efi_rts_wq00:35:133
315822992040,203cyclictest491145-21kworker/u20:3+efi_rts_wq23:55:125
315814992040,203cyclictest507097-21kworker/u20:1+efi_rts_wq00:20:143
315834992020,201cyclictest478617-21kworker/u20:5+efi_rts_wq23:25:129
315807992020,201cyclictest398508-21kworker/u20:0+efi_rts_wq21:30:171
315803992020,201cyclictest491145-21kworker/u20:3+efi_rts_wq00:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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