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2025-11-18 - 12:22

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 Nov 18, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
131492322315,5sleep30-21swapper/319:05:263
133512316309,5sleep10-21swapper/119:08:001
132422316303,4sleep20-21swapper/219:06:372
131982314307,5sleep00-21swapper/019:06:030
13772993040,301cyclictest5761-21kworker/u16:0+efi_rts_wq19:25:142
13771993000,299cyclictest12805-21kworker/u16:2+efi_rts_wq00:00:421
13773992970,296cyclictest12805-21kworker/u16:2+efi_rts_wq00:35:483
13772992960,295cyclictest5761-21kworker/u16:0+efi_rts_wq19:35:142
13770992960,295cyclictest28933-21kworker/u16:2+efi_rts_wq21:30:130
13771992950,294cyclictest10007-21kworker/u16:0+efi_rts_wq22:50:281
13772992940,293cyclictest28933-21kworker/u16:2+efi_rts_wq22:20:122
13773992930,292cyclictest28933-21kworker/u16:2+efi_rts_wq20:15:003
13771992930,292cyclictest12805-21kworker/u16:2+efi_rts_wq23:40:171
13772992920,291cyclictest10007-21kworker/u16:0+efi_rts_wq23:05:162
13772992910,290cyclictest28933-21kworker/u16:2+efi_rts_wq19:55:162
13770992910,290cyclictest28933-21kworker/u16:2+efi_rts_wq20:05:150
13771992890,288cyclictest5761-21kworker/u16:0+efi_rts_wq20:50:141
13772992880,287cyclictest28933-21kworker/u16:2+efi_rts_wq19:45:162
13770992880,286cyclictest12805-21kworker/u16:2+efi_rts_wq23:10:130
13773992870,286cyclictest5761-21kworker/u16:0+efi_rts_wq19:40:163
13772992870,286cyclictest28933-21kworker/u16:2+efi_rts_wq21:05:142
13771992870,285cyclictest28933-21kworker/u16:2+efi_rts_wq22:35:151
13772992860,285cyclictest6578-21kworker/u16:3+efi_rts_wq00:15:132
13773992850,284cyclictest28933-21kworker/u16:2+efi_rts_wq19:14:483
13771992850,284cyclictest28933-21kworker/u16:2+efi_rts_wq20:45:141
13773992830,282cyclictest5761-21kworker/u16:0+efi_rts_wq19:35:143
13773992830,282cyclictest12805-21kworker/u16:2+efi_rts_wq23:50:393
13772992830,282cyclictest5761-21kworker/u16:0+efi_rts_wq19:30:142
13772992820,281cyclictest10007-21kworker/u16:0+efi_rts_wq23:45:142
13771992810,280cyclictest12805-21kworker/u16:2+efi_rts_wq23:30:121
13770992810,280cyclictest28933-21kworker/u16:2+efi_rts_wq20:20:130
13773992800,279cyclictest28933-21kworker/u16:2+efi_rts_wq19:55:163
13773992800,278cyclictest5761-21kworker/u16:0+efi_rts_wq20:25:143
13771992800,279cyclictest10007-21kworker/u16:0+efi_rts_wq23:20:341
13773992790,278cyclictest5761-21kworker/u16:0+efi_rts_wq21:45:123
13771992750,274cyclictest6578-21kworker/u16:3+efi_rts_wq00:30:131
13773992740,271cyclictest5761-21kworker/u16:0+efi_rts_wq21:15:143
13772992740,273cyclictest5761-21kworker/u16:0+efi_rts_wq20:30:132
13771992740,273cyclictest5761-21kworker/u16:0+efi_rts_wq20:55:171
13770992720,271cyclictest12805-21kworker/u16:2+efi_rts_wq23:55:130
13773992710,270cyclictest6578-21kworker/u16:3+efi_rts_wq23:55:413
13771992710,269cyclictest5761-21kworker/u16:0+efi_rts_wq21:50:151
13773992700,268cyclictest5761-21kworker/u16:0+efi_rts_wq19:50:143
13770992700,269cyclictest5761-21kworker/u16:0+efi_rts_wq21:15:130
13770992700,269cyclictest12805-21kworker/u16:2+efi_rts_wq23:15:140
13773992690,268cyclictest28933-21kworker/u16:2+efi_rts_wq20:00:133
13772992690,268cyclictest5761-21kworker/u16:0+efi_rts_wq22:00:132
13772992690,268cyclictest5761-21kworker/u16:0+efi_rts_wq19:54:572
13771992690,268cyclictest28933-21kworker/u16:2+efi_rts_wq20:35:031
13770992690,268cyclictest5761-21kworker/u16:0+efi_rts_wq21:20:140
13773992680,267cyclictest5761-21kworker/u16:0+efi_rts_wq20:45:063
13771992680,267cyclictest6578-21kworker/u16:3+efi_rts_wq00:15:441
13771992680,267cyclictest5761-21kworker/u16:0+efi_rts_wq22:15:171
13771992680,266cyclictest5761-21kworker/u16:0+efi_rts_wq20:10:141
13773992650,264cyclictest5761-21kworker/u16:0+efi_rts_wq21:50:183
13770992620,261cyclictest5761-21kworker/u16:0+efi_rts_wq19:20:160
13770992610,260cyclictest5761-21kworker/u16:0+efi_rts_wq21:45:120
13770992600,259cyclictest12805-21kworker/u16:2+efi_rts_wq23:20:140
13770992590,258cyclictest5761-21kworker/u16:0+efi_rts_wq22:10:210
13773992580,257cyclictest28933-21kworker/u16:2+efi_rts_wq21:10:163
13770992580,257cyclictest28933-21kworker/u16:2+efi_rts_wq19:10:150
13770992570,254cyclictest12805-21kworker/u16:2+efi_rts_wq00:05:130
13773992560,254cyclictest12805-21kworker/u16:2+efi_rts_wq23:15:143
13770992550,254cyclictest2429-21kworker/u16:3+efi_rts_wq22:55:140
13772992520,251cyclictest10007-21kworker/u16:0+efi_rts_wq23:00:142
13772992510,250cyclictest5761-21kworker/u16:0+efi_rts_wq20:15:152
13772992510,250cyclictest12805-21kworker/u16:2+efi_rts_wq00:05:422
13770992500,247cyclictest10007-21kworker/u16:0+efi_rts_wq22:50:130
13773992480,247cyclictest28933-21kworker/u16:2+efi_rts_wq22:05:203
13771992480,247cyclictest28933-21kworker/u16:2+efi_rts_wq20:05:151
13770992430,242cyclictest28933-21kworker/u16:2+efi_rts_wq22:40:160
13772992420,241cyclictest28933-21kworker/u16:2+efi_rts_wq20:40:142
13771992420,241cyclictest28933-21kworker/u16:2+efi_rts_wq22:40:261
13771992380,237cyclictest4909-21kworker/u16:1+efi_rts_wq22:45:281
13771992380,237cyclictest12805-21kworker/u16:2+efi_rts_wq23:35:371
13772992370,236cyclictest5761-21kworker/u16:0+efi_rts_wq21:50:152
13770992370,236cyclictest28933-21kworker/u16:2+efi_rts_wq21:00:140
13772992360,235cyclictest28933-21kworker/u16:2+efi_rts_wq22:35:152
13771992360,235cyclictest10007-21kworker/u16:0+efi_rts_wq23:05:321
13772992350,234cyclictest28933-21kworker/u16:2+efi_rts_wq22:40:162
13770992290,228cyclictest5761-21kworker/u16:0+efi_rts_wq20:10:140
13770992290,228cyclictest12805-21kworker/u16:2+efi_rts_wq00:10:120
13771992270,226cyclictest5761-21kworker/u16:0+efi_rts_wq21:40:131
13773992260,225cyclictest5761-21kworker/u16:0+efi_rts_wq20:50:143
13770992260,225cyclictest5761-21kworker/u16:0+efi_rts_wq20:25:150
13770992260,225cyclictest10007-21kworker/u16:0+efi_rts_wq23:35:130
13770992250,224cyclictest28933-21kworker/u16:2+efi_rts_wq21:10:160
13771992230,222cyclictest12805-21kworker/u16:2+efi_rts_wq23:15:151
13773992220,221cyclictest5761-21kworker/u16:0+efi_rts_wq22:20:223
13773992220,221cyclictest5761-21kworker/u16:0+efi_rts_wq19:24:513
13771992220,221cyclictest28933-21kworker/u16:2+efi_rts_wq21:25:131
13771992220,221cyclictest28933-21kworker/u16:2+efi_rts_wq21:25:131
13771992210,220cyclictest5761-21kworker/u16:0+efi_rts_wq22:30:241
13770992210,220cyclictest5761-21kworker/u16:0+efi_rts_wq21:25:170
13770992210,220cyclictest5761-21kworker/u16:0+efi_rts_wq21:25:170
13773992190,218cyclictest5761-21kworker/u16:0+efi_rts_wq22:15:223
13770992170,215cyclictest10007-21kworker/u16:0+efi_rts_wq23:25:160
13772992160,215cyclictest28933-21kworker/u16:2+efi_rts_wq21:30:132
13772992120,210cyclictest28933-21kworker/u16:2+efi_rts_wq22:30:142
13773992110,210cyclictest5761-21kworker/u16:0+efi_rts_wq19:15:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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