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2026-07-16 - 08:03

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 Thu Jul 16, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255772334311,5sleep30-21swapper/319:09:053
253342316302,5sleep10-21swapper/119:05:591
253902315308,5sleep20-21swapper/219:06:442
255332313305,5sleep00-21swapper/019:08:330
25913993050,302cyclictest9693-21kworker/u16:3+efi_rts_wq22:40:131
25913993010,300cyclictest9693-21kworker/u16:3+efi_rts_wq20:40:131
25915992990,296cyclictest31065-21kworker/u16:1+efi_rts_wq20:45:133
25914992960,295cyclictest31065-21kworker/u16:1+efi_rts_wq23:00:122
25913992950,294cyclictest9693-21kworker/u16:3+efi_rts_wq21:09:111
25914992930,292cyclictest9693-21kworker/u16:3+efi_rts_wq20:20:122
25913992930,291cyclictest31065-21kworker/u16:1+efi_rts_wq22:35:121
25914992910,290cyclictest28624-21kworker/u16:2+efi_rts_wq23:35:132
25914992910,290cyclictest28624-21kworker/u16:2+efi_rts_wq00:21:162
25915992900,289cyclictest9693-21kworker/u16:3+efi_rts_wq20:05:133
25914992900,288cyclictest9693-21kworker/u16:3+efi_rts_wq19:40:112
25914992900,288cyclictest31065-21kworker/u16:1+efi_rts_wq22:30:132
25913992900,289cyclictest31065-21kworker/u16:1+efi_rts_wq20:10:111
25915992880,287cyclictest31065-21kworker/u16:1+efi_rts_wq19:20:123
25914992850,284cyclictest9693-21kworker/u16:3+efi_rts_wq21:15:112
25912992850,284cyclictest31065-21kworker/u16:1+efi_rts_wq22:20:110
25914992840,283cyclictest28624-21kworker/u16:2+efi_rts_wq23:34:412
25912992840,283cyclictest9693-21kworker/u16:3+efi_rts_wq22:55:120
25912992840,283cyclictest9693-21kworker/u16:3+efi_rts_wq19:10:120
25915992830,282cyclictest9693-21kworker/u16:3+efi_rts_wq21:05:153
25913992820,281cyclictest28624-21kworker/u16:2+efi_rts_wq23:50:131
25913992820,281cyclictest28624-21kworker/u16:2+efi_rts_wq00:35:131
25912992820,281cyclictest31065-21kworker/u16:1+efi_rts_wq20:14:020
25912992810,280cyclictest9693-21kworker/u16:3+efi_rts_wq22:10:130
25914992800,279cyclictest31065-21kworker/u16:1+efi_rts_wq22:50:122
25914992800,279cyclictest31065-21kworker/u16:1+efi_rts_wq19:55:122
25914992790,278cyclictest31065-21kworker/u16:1+efi_rts_wq20:00:122
25915992780,276cyclictest31065-21kworker/u16:1+efi_rts_wq21:50:143
25913992770,276cyclictest31065-21kworker/u16:1+efi_rts_wq22:24:261
25912992770,276cyclictest31065-21kworker/u16:1+efi_rts_wq23:14:360
25915992760,275cyclictest31065-21kworker/u16:1+efi_rts_wq23:30:123
25913992760,275cyclictest31065-21kworker/u16:1+efi_rts_wq23:45:111
25914992750,274cyclictest31065-21kworker/u16:1+efi_rts_wq22:00:132
25912992750,274cyclictest9693-21kworker/u16:3+efi_rts_wq21:35:140
25915992730,272cyclictest9693-21kworker/u16:3+efi_rts_wq21:00:113
25915992730,272cyclictest31065-21kworker/u16:1+efi_rts_wq23:45:113
25912992730,271cyclictest31065-21kworker/u16:1+efi_rts_wq22:39:290
25912992730,271cyclictest31065-21kworker/u16:1+efi_rts_wq00:00:120
25914992720,271cyclictest31065-21kworker/u16:1+efi_rts_wq19:30:122
25913992720,271cyclictest31065-21kworker/u16:1+efi_rts_wq20:39:051
25913992720,271cyclictest31065-21kworker/u16:1+efi_rts_wq00:10:151
25915992700,269cyclictest31065-21kworker/u16:1+efi_rts_wq19:15:113
25912992700,269cyclictest28624-21kworker/u16:2+efi_rts_wq00:15:110
25912992690,268cyclictest9693-21kworker/u16:3+efi_rts_wq19:43:570
25912992690,268cyclictest31065-21kworker/u16:1+efi_rts_wq23:51:090
25912992690,268cyclictest31065-21kworker/u16:1+efi_rts_wq19:25:120
25914992680,267cyclictest9693-21kworker/u16:3+efi_rts_wq22:55:122
25915992670,266cyclictest9693-21kworker/u16:3+efi_rts_wq21:35:133
25915992670,266cyclictest28624-21kworker/u16:2+efi_rts_wq00:30:113
25915992660,265cyclictest9693-21kworker/u16:3+efi_rts_wq22:45:113
25913992640,263cyclictest31065-21kworker/u16:1+efi_rts_wq20:15:121
25913992640,263cyclictest28624-21kworker/u16:2+efi_rts_wq23:40:131
25913992630,262cyclictest9693-21kworker/u16:3+efi_rts_wq20:59:101
25913992620,261cyclictest31065-21kworker/u16:1+efi_rts_wq00:05:131
25912992620,259cyclictest31065-21kworker/u16:1+efi_rts_wq19:45:120
25912992610,260cyclictest9693-21kworker/u16:3+efi_rts_wq21:54:210
25915992560,254cyclictest9693-21kworker/u16:3+efi_rts_wq20:55:123
25915992560,254cyclictest31065-21kworker/u16:1+efi_rts_wq21:10:143
25913992560,255cyclictest9693-21kworker/u16:3+efi_rts_wq22:30:131
25912992560,255cyclictest31065-21kworker/u16:1+efi_rts_wq19:20:120
25915992540,253cyclictest28624-21kworker/u16:2+efi_rts_wq00:25:123
25914992540,253cyclictest31065-21kworker/u16:1+efi_rts_wq20:50:142
25912992530,252cyclictest9693-21kworker/u16:3+efi_rts_wq21:20:130
25914992510,250cyclictest28624-21kworker/u16:2+efi_rts_wq23:10:132
25912992510,250cyclictest9693-21kworker/u16:3+efi_rts_wq20:35:120
25914992500,249cyclictest28624-21kworker/u16:2+efi_rts_wq23:15:122
25913992500,249cyclictest9693-21kworker/u16:3+efi_rts_wq20:25:121
25912992490,248cyclictest9693-21kworker/u16:3+efi_rts_wq20:20:130
25915992470,246cyclictest9693-21kworker/u16:3+efi_rts_wq21:59:213
25913992470,246cyclictest31065-21kworker/u16:1+efi_rts_wq21:55:131
25913992470,246cyclictest31065-21kworker/u16:1+efi_rts_wq19:15:011
25912992460,245cyclictest31065-21kworker/u16:1+efi_rts_wq22:05:120
25914992430,242cyclictest9693-21kworker/u16:3+efi_rts_wq21:40:142
25914992430,242cyclictest28624-21kworker/u16:2+efi_rts_wq00:35:132
25913992430,242cyclictest9693-21kworker/u16:3+efi_rts_wq19:50:131
25913992430,242cyclictest31065-21kworker/u16:1+efi_rts_wq20:04:001
25914992420,241cyclictest31065-21kworker/u16:1+efi_rts_wq20:30:112
25913992420,241cyclictest9693-21kworker/u16:3+efi_rts_wq23:04:351
25913992420,241cyclictest28624-21kworker/u16:2+efi_rts_wq23:10:131
25913992410,240cyclictest31065-21kworker/u16:1+efi_rts_wq19:38:551
25912992400,239cyclictest9693-21kworker/u16:3+efi_rts_wq21:30:130
25914992390,238cyclictest9693-21kworker/u16:3+efi_rts_wq19:50:132
25912992390,238cyclictest9693-21kworker/u16:3+efi_rts_wq22:15:130
25912992390,238cyclictest31065-21kworker/u16:1+efi_rts_wq23:24:380
25914992380,237cyclictest9693-21kworker/u16:3+efi_rts_wq21:25:122
25914992340,233cyclictest9693-21kworker/u16:3+efi_rts_wq21:14:142
25913992320,230cyclictest28624-21kworker/u16:2+efi_rts_wq23:25:121
25912992320,231cyclictest31065-21kworker/u16:1+efi_rts_wq00:05:130
25915992300,229cyclictest31065-21kworker/u16:1+efi_rts_wq21:29:163
25915992300,229cyclictest31065-21kworker/u16:1+efi_rts_wq19:35:143
25912992300,229cyclictest9693-21kworker/u16:3+efi_rts_wq19:18:510
25912992300,229cyclictest31065-21kworker/u16:1+efi_rts_wq22:50:120
25912992240,223cyclictest9693-21kworker/u16:3+efi_rts_wq21:15:110
25912992240,223cyclictest31065-21kworker/u16:1+efi_rts_wq23:05:120
25915992230,222cyclictest9693-21kworker/u16:3+efi_rts_wq21:34:183
25915992230,222cyclictest31065-21kworker/u16:1+efi_rts_wq22:59:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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