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2025-08-29 - 11:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 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 100 highest latencies:
System rackcslot3s.osadl.org (updated Fri Aug 29, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313252316308,5sleep20-21swapper/219:06:232
315592315308,5sleep00-21swapper/019:09:220
312672315309,4sleep10-21swapper/119:05:381
313312314307,5sleep30-21swapper/319:06:283
31877992950,294cyclictest7814-21kworker/u16:0+efi_rts_wq21:55:143
31874992950,294cyclictest7814-21kworker/u16:0+efi_rts_wq21:25:140
31876992940,293cyclictest7814-21kworker/u16:0+efi_rts_wq22:05:242
31877992920,290cyclictest16029-21kworker/u16:1+efi_rts_wq22:30:173
31876992920,291cyclictest26348-21kworker/u16:2+efi_rts_wq23:15:132
31877992910,290cyclictest7814-21kworker/u16:0+efi_rts_wq22:15:153
31874992910,290cyclictest18480-21kworker/u16:2+efi_rts_wq00:25:150
31874992910,290cyclictest16029-21kworker/u16:1+efi_rts_wq21:05:170
31877992900,289cyclictest28868-21kworker/u16:3+efi_rts_wq23:10:383
31875992900,289cyclictest16029-21kworker/u16:1+efi_rts_wq21:25:171
31874992890,288cyclictest7814-21kworker/u16:0+efi_rts_wq19:50:150
31875992880,287cyclictest28868-21kworker/u16:3+efi_rts_wq00:20:141
31876992870,286cyclictest16029-21kworker/u16:1+efi_rts_wq22:45:122
31874992870,286cyclictest7814-21kworker/u16:0+efi_rts_wq20:25:170
31877992860,285cyclictest7814-21kworker/u16:0+efi_rts_wq20:25:153
31874992860,285cyclictest16029-21kworker/u16:1+efi_rts_wq19:20:150
31877992850,284cyclictest7814-21kworker/u16:0+efi_rts_wq19:40:133
31877992850,284cyclictest18480-21kworker/u16:2+efi_rts_wq00:00:473
31876992840,283cyclictest7814-21kworker/u16:0+efi_rts_wq19:25:122
31874992840,283cyclictest7814-21kworker/u16:0+efi_rts_wq21:35:170
31874992810,280cyclictest16029-21kworker/u16:1+efi_rts_wq21:20:170
31876992800,279cyclictest16029-21kworker/u16:1+efi_rts_wq20:10:132
31874992800,279cyclictest16029-21kworker/u16:1+efi_rts_wq22:30:170
31877992790,278cyclictest8936-21kworker/u16:0+efi_rts_wq23:20:393
31875992790,278cyclictest18480-21kworker/u16:2+efi_rts_wq00:05:151
31874992790,278cyclictest28868-21kworker/u16:3+efi_rts_wq22:50:140
31874992790,278cyclictest16029-21kworker/u16:1+efi_rts_wq19:14:550
31875992780,277cyclictest7814-21kworker/u16:0+efi_rts_wq19:55:021
31877992770,276cyclictest16029-21kworker/u16:1+efi_rts_wq19:30:133
31875992770,276cyclictest16029-21kworker/u16:1+efi_rts_wq22:25:141
31876992760,275cyclictest28868-21kworker/u16:3+efi_rts_wq00:25:142
31875992760,275cyclictest7814-21kworker/u16:0+efi_rts_wq20:05:151
31877992750,274cyclictest16029-21kworker/u16:1+efi_rts_wq21:30:143
31874992750,274cyclictest16029-21kworker/u16:1+efi_rts_wq21:45:170
31874992740,273cyclictest16029-21kworker/u16:1+efi_rts_wq20:35:140
31876992730,272cyclictest18480-21kworker/u16:2+efi_rts_wq00:10:122
31875992730,272cyclictest16029-21kworker/u16:1+efi_rts_wq22:15:161
31874992730,272cyclictest7814-21kworker/u16:0+efi_rts_wq20:05:040
31877992700,269cyclictest18480-21kworker/u16:2+efi_rts_wq00:30:143
31874992700,269cyclictest18480-21kworker/u16:2+efi_rts_wq23:45:150
31877992680,267cyclictest18480-21kworker/u16:2+efi_rts_wq00:35:533
31877992680,265cyclictest16029-21kworker/u16:1+efi_rts_wq21:10:143
31876992650,264cyclictest16029-21kworker/u16:1+efi_rts_wq22:10:122
31874992640,263cyclictest16029-21kworker/u16:1+efi_rts_wq21:50:190
31877992610,260cyclictest16029-21kworker/u16:1+efi_rts_wq21:00:123
31875992610,260cyclictest16029-21kworker/u16:1+efi_rts_wq21:15:161
31875992600,259cyclictest16029-21kworker/u16:1+efi_rts_wq20:00:021
31874992600,259cyclictest7814-21kworker/u16:0+efi_rts_wq22:20:180
31874992600,259cyclictest28868-21kworker/u16:3+efi_rts_wq23:50:140
31877992590,258cyclictest28868-21kworker/u16:3+efi_rts_wq22:50:143
31875992590,258cyclictest28868-21kworker/u16:3+efi_rts_wq00:10:481
31877992580,257cyclictest8936-21kworker/u16:0+efi_rts_wq23:25:143
31877992580,257cyclictest16120-21kworker/u16:1+efi_rts_wq23:35:123
31877992580,257cyclictest16029-21kworker/u16:1+efi_rts_wq22:25:133
31877992580,257cyclictest16029-21kworker/u16:1+efi_rts_wq22:00:233
31874992560,255cyclictest16029-21kworker/u16:1+efi_rts_wq22:05:170
31877992550,254cyclictest16029-21kworker/u16:1+efi_rts_wq22:05:163
31874992550,254cyclictest28868-21kworker/u16:3+efi_rts_wq23:05:150
31874992540,253cyclictest7814-21kworker/u16:0+efi_rts_wq19:15:010
31875992520,251cyclictest16029-21kworker/u16:1+efi_rts_wq20:20:131
31874992520,251cyclictest16029-21kworker/u16:1+efi_rts_wq20:40:140
31874992520,250cyclictest16029-21kworker/u16:1+efi_rts_wq21:15:190
31875992480,247cyclictest7814-21kworker/u16:0+efi_rts_wq19:40:131
31876992470,246cyclictest16029-21kworker/u16:1+efi_rts_wq19:20:162
31877992460,245cyclictest28868-21kworker/u16:3+efi_rts_wq23:45:143
31875992460,245cyclictest7814-21kworker/u16:0+efi_rts_wq21:45:171
31874992430,242cyclictest7814-21kworker/u16:0+efi_rts_wq22:00:130
31875992410,240cyclictest7814-21kworker/u16:0+efi_rts_wq20:50:111
31875992410,240cyclictest7814-21kworker/u16:0+efi_rts_wq20:10:141
31877992390,238cyclictest16029-21kworker/u16:1+efi_rts_wq19:39:583
31877992390,238cyclictest16029-21kworker/u16:1+efi_rts_wq19:39:583
31876992380,237cyclictest7814-21kworker/u16:0+efi_rts_wq21:55:232
31875992370,236cyclictest28868-21kworker/u16:3+efi_rts_wq23:50:441
31874992360,235cyclictest7814-21kworker/u16:0+efi_rts_wq20:00:140
31875992320,231cyclictest16029-21kworker/u16:1+efi_rts_wq20:40:091
31875992310,230cyclictest28868-21kworker/u16:3+efi_rts_wq22:55:151
31875992310,230cyclictest18480-21kworker/u16:2+efi_rts_wq00:25:141
31874992270,226cyclictest7814-21kworker/u16:0+efi_rts_wq19:45:140
31877992260,222cyclictest28868-21kworker/u16:3+efi_rts_wq22:55:153
31876992250,224cyclictest18480-21kworker/u16:2+efi_rts_wq00:20:502
31874992230,222cyclictest18480-21kworker/u16:2+efi_rts_wq00:35:170
31877992220,221cyclictest16029-21kworker/u16:1+efi_rts_wq20:30:143
31876992220,220cyclictest28868-21kworker/u16:3+efi_rts_wq22:55:142
31874992220,221cyclictest16120-21kworker/u16:1+efi_rts_wq23:35:130
31877992210,220cyclictest16029-21kworker/u16:1+efi_rts_wq20:45:133
31877992190,217cyclictest7814-21kworker/u16:0+efi_rts_wq22:35:293
31875992190,218cyclictest7814-21kworker/u16:0+efi_rts_wq22:30:281
31875992190,218cyclictest7814-21kworker/u16:0+efi_rts_wq19:15:131
31874992190,218cyclictest7814-21kworker/u16:0+efi_rts_wq22:40:130
31877992180,217cyclictest26348-21kworker/u16:2+efi_rts_wq23:15:373
31875992170,216cyclictest26348-21kworker/u16:2+efi_rts_wq23:00:131
31875992160,215cyclictest7814-21kworker/u16:0+efi_rts_wq20:55:121
31874992140,213cyclictest7814-21kworker/u16:0+efi_rts_wq19:25:120
31877992130,212cyclictest16029-21kworker/u16:1+efi_rts_wq22:45:123
31876992130,212cyclictest18480-21kworker/u16:2+efi_rts_wq00:00:122
31874992130,212cyclictest28868-21kworker/u16:3+efi_rts_wq23:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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