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2025-12-07 - 06:51

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 Sun Dec 07, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109792319312,5sleep30-21swapper/319:09:553
107472319304,5sleep00-21swapper/019:06:560
109602316308,5sleep10-21swapper/119:09:411
106722315308,5sleep20-21swapper/219:05:582
11252993010,299cyclictest7087-21kworker/u16:3+efi_rts_wq19:50:132
11250992990,298cyclictest7087-21kworker/u16:3+efi_rts_wq23:05:490
11252992980,297cyclictest28568-21kworker/u16:2+efi_rts_wq20:30:232
11252992960,292cyclictest7087-21kworker/u16:3+efi_rts_wq20:50:152
11250992960,294cyclictest8361-21kworker/u16:0+efi_rts_wq00:20:140
11250992960,294cyclictest28568-21kworker/u16:2+efi_rts_wq20:05:130
11253992940,293cyclictest7087-21kworker/u16:3+efi_rts_wq23:25:123
11252992930,292cyclictest7087-21kworker/u16:3+efi_rts_wq21:20:132
11253992920,290cyclictest7087-21kworker/u16:3+efi_rts_wq22:55:133
11250992920,291cyclictest7087-21kworker/u16:3+efi_rts_wq22:40:140
11253992910,289cyclictest8361-21kworker/u16:0+efi_rts_wq00:30:153
11251992910,290cyclictest7087-21kworker/u16:3+efi_rts_wq20:55:261
11251992910,290cyclictest7087-21kworker/u16:3+efi_rts_wq19:20:131
11251992900,289cyclictest6043-21kworker/u16:2+efi_rts_wq00:00:141
11251992900,289cyclictest28568-21kworker/u16:2+efi_rts_wq22:25:431
11252992870,284cyclictest7087-21kworker/u16:3+efi_rts_wq22:10:172
11250992870,285cyclictest28568-21kworker/u16:2+efi_rts_wq21:25:130
11252992860,285cyclictest7087-21kworker/u16:3+efi_rts_wq19:45:152
11250992860,285cyclictest28568-21kworker/u16:2+efi_rts_wq20:35:130
11251992850,284cyclictest28568-21kworker/u16:2+efi_rts_wq21:35:121
11253992840,282cyclictest6043-21kworker/u16:2+efi_rts_wq00:10:143
11251992840,283cyclictest28568-21kworker/u16:2+efi_rts_wq20:00:151
11253992830,282cyclictest28568-21kworker/u16:2+efi_rts_wq19:15:023
11252992830,281cyclictest6043-21kworker/u16:2+efi_rts_wq00:25:152
11250992830,281cyclictest7087-21kworker/u16:3+efi_rts_wq21:05:140
11251992820,281cyclictest7087-21kworker/u16:3+efi_rts_wq19:35:131
11252992770,276cyclictest8361-21kworker/u16:0+efi_rts_wq00:00:572
11251992770,276cyclictest6043-21kworker/u16:2+efi_rts_wq23:55:121
11253992750,274cyclictest8361-21kworker/u16:0+efi_rts_wq00:15:153
11252992750,274cyclictest7087-21kworker/u16:3+efi_rts_wq19:40:132
11252992750,273cyclictest7087-21kworker/u16:3+efi_rts_wq22:00:152
11251992750,274cyclictest8361-21kworker/u16:0+efi_rts_wq00:35:121
11250992750,274cyclictest25207-21kworker/u16:1+efi_rts_wq23:50:140
11252992740,273cyclictest28568-21kworker/u16:2+efi_rts_wq21:35:122
11253992730,272cyclictest28568-21kworker/u16:2+efi_rts_wq21:55:113
11252992720,271cyclictest7087-21kworker/u16:3+efi_rts_wq22:40:452
11252992710,270cyclictest7087-21kworker/u16:3+efi_rts_wq21:05:142
11253992690,268cyclictest7087-21kworker/u16:3+efi_rts_wq20:55:143
11250992690,268cyclictest7087-21kworker/u16:3+efi_rts_wq23:35:140
11253992680,267cyclictest28568-21kworker/u16:2+efi_rts_wq21:20:303
11252992670,266cyclictest7087-21kworker/u16:3+efi_rts_wq21:50:152
11253992660,265cyclictest7087-21kworker/u16:3+efi_rts_wq21:00:153
11253992650,264cyclictest28568-21kworker/u16:2+efi_rts_wq21:15:143
11253992650,264cyclictest28568-21kworker/u16:2+efi_rts_wq21:15:133
11252992650,264cyclictest28568-21kworker/u16:2+efi_rts_wq21:45:122
11250992640,263cyclictest8361-21kworker/u16:0+efi_rts_wq00:15:590
11253992630,261cyclictest7087-21kworker/u16:3+efi_rts_wq23:20:133
11251992630,262cyclictest7087-21kworker/u16:3+efi_rts_wq21:05:281
11253992620,261cyclictest8361-21kworker/u16:0+efi_rts_wq00:20:133
11253992610,260cyclictest7087-21kworker/u16:3+efi_rts_wq22:15:403
11252992610,260cyclictest7087-21kworker/u16:3+efi_rts_wq23:25:122
11253992600,259cyclictest15441-21kworker/u16:2+efi_rts_wq23:15:513
11252992600,259cyclictest7087-21kworker/u16:3+efi_rts_wq23:30:122
11252992600,259cyclictest10254-21kworker/u16:0+efi_rts_wq23:10:132
11252992580,256cyclictest7087-21kworker/u16:3+efi_rts_wq20:10:172
11251992580,257cyclictest8361-21kworker/u16:0+efi_rts_wq00:30:151
11252992570,256cyclictest7087-21kworker/u16:3+efi_rts_wq22:20:152
11253992560,254cyclictest25207-21kworker/u16:1+efi_rts_wq23:40:123
11253992540,253cyclictest28568-21kworker/u16:2+efi_rts_wq19:35:143
11251992530,252cyclictest7087-21kworker/u16:3+efi_rts_wq19:45:131
11253992520,251cyclictest7087-21kworker/u16:3+efi_rts_wq22:40:153
11252992510,250cyclictest7087-21kworker/u16:3+efi_rts_wq21:00:272
11252992510,250cyclictest7087-21kworker/u16:3+efi_rts_wq19:15:132
11251992510,248cyclictest7087-21kworker/u16:3+efi_rts_wq19:15:131
11252992490,248cyclictest7087-21kworker/u16:3+efi_rts_wq23:20:132
11251992490,248cyclictest28568-21kworker/u16:2+efi_rts_wq22:15:131
11251992490,248cyclictest28568-21kworker/u16:2+efi_rts_wq20:10:201
11251992480,247cyclictest7087-21kworker/u16:3+efi_rts_wq23:00:121
11252992470,246cyclictest7087-21kworker/u16:3+efi_rts_wq22:50:122
11253992460,245cyclictest7087-21kworker/u16:3+efi_rts_wq20:25:213
11250992460,245cyclictest28568-21kworker/u16:2+efi_rts_wq22:15:140
11253992450,244cyclictest7087-21kworker/u16:3+efi_rts_wq20:45:153
11252992450,244cyclictest28568-21kworker/u16:2+efi_rts_wq19:30:142
11250992440,243cyclictest7087-21kworker/u16:3+efi_rts_wq22:05:150
11250992440,243cyclictest28568-21kworker/u16:2+efi_rts_wq19:40:150
11252992430,241cyclictest28568-21kworker/u16:2+efi_rts_wq22:45:132
11251992420,241cyclictest28568-21kworker/u16:2+efi_rts_wq20:15:201
11250992420,241cyclictest28568-21kworker/u16:2+efi_rts_wq20:15:140
11253992400,239cyclictest28568-21kworker/u16:2+efi_rts_wq19:30:143
11251992400,238cyclictest25207-21kworker/u16:1+efi_rts_wq23:40:541
11252992370,236cyclictest28568-21kworker/u16:2+efi_rts_wq21:15:292
11252992370,236cyclictest28568-21kworker/u16:2+efi_rts_wq21:15:292
11253992360,235cyclictest7087-21kworker/u16:3+efi_rts_wq23:35:543
11252992360,235cyclictest7087-21kworker/u16:3+efi_rts_wq23:00:132
11251992350,234cyclictest8361-21kworker/u16:0+efi_rts_wq00:21:011
11252992320,231cyclictest28568-21kworker/u16:2+efi_rts_wq20:20:212
11250992320,231cyclictest7087-21kworker/u16:3+efi_rts_wq19:45:130
11250992310,230cyclictest15441-21kworker/u16:2+efi_rts_wq23:15:180
11253992290,228cyclictest6043-21kworker/u16:2+efi_rts_wq00:00:133
11253992280,227cyclictest6043-21kworker/u16:2+efi_rts_wq00:05:153
11251992270,226cyclictest28568-21kworker/u16:2+efi_rts_wq20:35:121
11252992240,223cyclictest28568-21kworker/u16:2+efi_rts_wq22:35:112
11251992240,223cyclictest7087-21kworker/u16:3+efi_rts_wq20:50:151
11250992220,221cyclictest28568-21kworker/u16:2+efi_rts_wq21:10:150
11253992210,220cyclictest28568-21kworker/u16:2+efi_rts_wq21:45:353
11250992200,219cyclictest28568-21kworker/u16:2+efi_rts_wq20:00:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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