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2026-05-26 - 05:00

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 Tue May 26, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310312318305,5sleep20-21swapper/219:07:012
311852317303,5sleep00-21swapper/019:09:000
310652315308,5sleep10-21swapper/119:07:281
310222315307,5sleep30-21swapper/319:06:543
31532993020,301cyclictest20023-21kworker/u16:2+efi_rts_wq19:10:123
31530993010,298cyclictest25040-21kworker/u16:3+efi_rts_wq20:45:131
31530993000,299cyclictest25040-21kworker/u16:3+efi_rts_wq20:40:111
31530993000,299cyclictest25040-21kworker/u16:3+efi_rts_wq20:20:131
31531992980,297cyclictest20023-21kworker/u16:2+efi_rts_wq19:39:412
31532992950,293cyclictest20023-21kworker/u16:2+efi_rts_wq21:55:143
31530992950,294cyclictest25040-21kworker/u16:3+efi_rts_wq22:50:121
31529992950,294cyclictest24496-21kworker/u16:2+efi_rts_wq00:15:130
31532992940,293cyclictest24496-21kworker/u16:2+efi_rts_wq23:55:133
31532992920,291cyclictest20023-21kworker/u16:2+efi_rts_wq20:30:123
31532992920,290cyclictest3339-21kworker/u16:0+efi_rts_wq23:20:123
31531992920,291cyclictest25040-21kworker/u16:3+efi_rts_wq22:35:102
31532992910,290cyclictest20023-21kworker/u16:2+efi_rts_wq20:29:483
31530992880,286cyclictest20023-21kworker/u16:2+efi_rts_wq20:00:131
31532992860,285cyclictest3339-21kworker/u16:0+efi_rts_wq00:35:133
31532992830,282cyclictest3339-21kworker/u16:0+efi_rts_wq23:15:133
31532992830,282cyclictest24496-21kworker/u16:2+efi_rts_wq00:15:133
31530992830,282cyclictest3339-21kworker/u16:0+efi_rts_wq23:20:191
31531992820,281cyclictest20023-21kworker/u16:2+efi_rts_wq23:00:122
31532992790,278cyclictest20023-21kworker/u16:2+efi_rts_wq22:35:113
31531992790,278cyclictest25040-21kworker/u16:3+efi_rts_wq21:15:132
31530992790,278cyclictest20023-21kworker/u16:2+efi_rts_wq20:10:131
31531992780,277cyclictest25284-21kworker/u16:1+efi_rts_wq22:45:132
31529992780,277cyclictest25040-21kworker/u16:3+efi_rts_wq22:25:080
31529992780,277cyclictest25040-21kworker/u16:3+efi_rts_wq20:49:510
31532992770,276cyclictest825-21kworker/u16:1+efi_rts_wq23:00:153
31532992760,275cyclictest20023-21kworker/u16:2+efi_rts_wq21:10:123
31531992760,275cyclictest25040-21kworker/u16:3+efi_rts_wq22:25:132
31531992750,274cyclictest24496-21kworker/u16:2+efi_rts_wq00:10:112
31531992740,273cyclictest25040-21kworker/u16:3+efi_rts_wq19:30:122
31529992740,273cyclictest25040-21kworker/u16:3+efi_rts_wq22:50:120
31529992740,273cyclictest20023-21kworker/u16:2+efi_rts_wq22:10:130
31532992730,272cyclictest20023-21kworker/u16:2+efi_rts_wq21:40:123
31531992730,271cyclictest3339-21kworker/u16:0+efi_rts_wq23:20:122
31529992730,272cyclictest825-21kworker/u16:1+efi_rts_wq23:00:130
31529992730,271cyclictest25040-21kworker/u16:3+efi_rts_wq22:40:110
31531992690,268cyclictest24496-21kworker/u16:2+efi_rts_wq00:20:142
31532992680,267cyclictest25040-21kworker/u16:3+efi_rts_wq22:30:133
31530992680,267cyclictest24496-21kworker/u16:2+efi_rts_wq00:25:141
31531992670,266cyclictest25040-21kworker/u16:3+efi_rts_wq21:20:132
31532992660,265cyclictest25040-21kworker/u16:3+efi_rts_wq21:09:553
31532992660,265cyclictest25040-21kworker/u16:3+efi_rts_wq19:35:113
31532992660,265cyclictest20023-21kworker/u16:2+efi_rts_wq19:45:123
31530992660,265cyclictest25040-21kworker/u16:3+efi_rts_wq21:25:141
31531992650,264cyclictest3339-21kworker/u16:0+efi_rts_wq00:05:132
31530992650,264cyclictest20023-21kworker/u16:2+efi_rts_wq20:05:131
31532992640,263cyclictest25040-21kworker/u16:3+efi_rts_wq20:19:473
31532992640,263cyclictest20023-21kworker/u16:2+efi_rts_wq19:50:133
31530992640,263cyclictest3339-21kworker/u16:0+efi_rts_wq23:05:161
31530992640,263cyclictest20023-21kworker/u16:2+efi_rts_wq19:55:121
31532992630,262cyclictest20023-21kworker/u16:2+efi_rts_wq22:00:123
31529992630,261cyclictest20023-21kworker/u16:2+efi_rts_wq22:35:110
31531992610,260cyclictest25040-21kworker/u16:3+efi_rts_wq20:24:482
31530992610,260cyclictest25040-21kworker/u16:3+efi_rts_wq21:35:121
31530992610,260cyclictest20023-21kworker/u16:2+efi_rts_wq21:05:131
31532992600,259cyclictest20023-21kworker/u16:2+efi_rts_wq21:04:543
31532992590,258cyclictest25040-21kworker/u16:3+efi_rts_wq20:50:143
31531992590,258cyclictest25040-21kworker/u16:3+efi_rts_wq22:30:132
31531992590,258cyclictest25040-21kworker/u16:3+efi_rts_wq19:40:112
31531992590,256cyclictest825-21kworker/u16:1+efi_rts_wq23:45:132
31529992590,258cyclictest3339-21kworker/u16:0+efi_rts_wq23:25:130
31531992580,257cyclictest20023-21kworker/u16:2+efi_rts_wq20:50:142
31529992580,257cyclictest825-21kworker/u16:1+efi_rts_wq23:45:240
31532992570,256cyclictest25040-21kworker/u16:3+efi_rts_wq19:15:143
31531992570,256cyclictest20023-21kworker/u16:2+efi_rts_wq22:40:132
31532992560,255cyclictest3339-21kworker/u16:0+efi_rts_wq23:25:133
31532992560,255cyclictest20023-21kworker/u16:2+efi_rts_wq19:24:383
31529992550,254cyclictest20023-21kworker/u16:2+efi_rts_wq21:45:130
31529992550,254cyclictest20023-21kworker/u16:2+efi_rts_wq20:30:120
31529992540,252cyclictest3339-21kworker/u16:0+efi_rts_wq00:30:120
31532992530,252cyclictest3339-21kworker/u16:0+efi_rts_wq23:45:133
31531992530,252cyclictest24496-21kworker/u16:2+efi_rts_wq00:00:132
31530992530,252cyclictest25040-21kworker/u16:3+efi_rts_wq20:34:501
31532992510,250cyclictest24496-21kworker/u16:2+efi_rts_wq00:20:313
31530992500,249cyclictest24496-21kworker/u16:2+efi_rts_wq23:50:121
31530992490,248cyclictest25040-21kworker/u16:3+efi_rts_wq22:05:121
31532992480,247cyclictest24496-21kworker/u16:2+efi_rts_wq00:00:273
31531992470,246cyclictest3339-21kworker/u16:0+efi_rts_wq23:40:122
31530992460,245cyclictest3339-21kworker/u16:0+efi_rts_wq00:35:131
31529992460,245cyclictest25040-21kworker/u16:3+efi_rts_wq20:55:130
31532992450,244cyclictest3339-21kworker/u16:0+efi_rts_wq23:40:123
31531992450,244cyclictest25040-21kworker/u16:3+efi_rts_wq21:00:132
31531992450,244cyclictest20023-21kworker/u16:2+efi_rts_wq22:55:122
31531992450,243cyclictest825-21kworker/u16:1+efi_rts_wq23:35:122
31531992440,242cyclictest3339-21kworker/u16:0+efi_rts_wq23:10:122
31530992440,243cyclictest25040-21kworker/u16:3+efi_rts_wq19:25:141
31529992440,243cyclictest20023-21kworker/u16:2+efi_rts_wq20:25:140
31529992430,242cyclictest20023-21kworker/u16:2+efi_rts_wq19:29:390
31529992420,241cyclictest25040-21kworker/u16:3+efi_rts_wq20:15:150
31530992410,240cyclictest20023-21kworker/u16:2+efi_rts_wq21:10:121
31529992410,240cyclictest3339-21kworker/u16:0+efi_rts_wq00:25:320
31530992400,239cyclictest25040-21kworker/u16:3+efi_rts_wq19:34:401
31530992400,239cyclictest20023-21kworker/u16:2+efi_rts_wq19:10:121
31532992370,236cyclictest25040-21kworker/u16:3+efi_rts_wq19:25:133
31532992360,235cyclictest25284-21kworker/u16:1+efi_rts_wq22:45:133
31531992360,235cyclictest825-21kworker/u16:1+efi_rts_wq23:25:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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