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2026-06-02 - 19:09

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 Jun 02, 2026 12:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
58822333312,4sleep10-21swapper/107:09:241
57192318308,8sleep20-21swapper/207:07:172
57792315308,5sleep00-21swapper/007:08:030
56202315308,5sleep30-21swapper/307:06:023
6195992990,298cyclictest32043-21kworker/u16:1+efi_rts_wq09:40:121
6195992980,297cyclictest32043-21kworker/u16:1+efi_rts_wq08:52:051
6192992950,294cyclictest32043-21kworker/u16:1+efi_rts_wq08:40:130
6197992940,292cyclictest20555-21kworker/u16:2+efi_rts_wq09:45:133
6192992940,293cyclictest20555-21kworker/u16:2+efi_rts_wq07:25:120
6197992930,292cyclictest20555-21kworker/u16:2+efi_rts_wq08:05:123
6197992920,291cyclictest20555-21kworker/u16:2+efi_rts_wq09:32:123
6196992920,291cyclictest12970-21kworker/u16:3+efi_rts_wq11:30:132
6197992910,288cyclictest32043-21kworker/u16:1+efi_rts_wq08:25:143
6196992890,288cyclictest32043-21kworker/u16:1+efi_rts_wq11:10:122
6196992890,288cyclictest20555-21kworker/u16:2+efi_rts_wq09:35:122
6196992890,288cyclictest20328-21kworker/u16:1+efi_rts_wq12:10:122
6195992890,288cyclictest20328-21kworker/u16:1+efi_rts_wq11:37:351
6195992890,288cyclictest15536-21kworker/u16:0+efi_rts_wq11:50:121
6192992890,288cyclictest32043-21kworker/u16:1+efi_rts_wq08:50:130
6195992860,285cyclictest15536-21kworker/u16:0+efi_rts_wq12:00:121
6197992850,284cyclictest20555-21kworker/u16:2+efi_rts_wq09:37:133
6197992850,284cyclictest20555-21kworker/u16:2+efi_rts_wq07:15:123
6192992850,284cyclictest32043-21kworker/u16:1+efi_rts_wq09:00:130
6195992840,283cyclictest32043-21kworker/u16:1+efi_rts_wq10:00:131
6195992840,283cyclictest20328-21kworker/u16:1+efi_rts_wq12:25:101
6192992840,283cyclictest20555-21kworker/u16:2+efi_rts_wq10:50:130
6196992830,282cyclictest32043-21kworker/u16:1+efi_rts_wq07:20:122
6196992810,279cyclictest32043-21kworker/u16:1+efi_rts_wq10:52:262
6196992800,279cyclictest20555-21kworker/u16:2+efi_rts_wq07:15:002
6197992790,278cyclictest20555-21kworker/u16:2+efi_rts_wq10:25:133
6196992790,277cyclictest15536-21kworker/u16:0+efi_rts_wq12:00:122
6195992790,277cyclictest32043-21kworker/u16:1+efi_rts_wq10:30:111
6192992790,278cyclictest20555-21kworker/u16:2+efi_rts_wq09:20:110
6197992780,277cyclictest20555-21kworker/u16:2+efi_rts_wq09:25:123
6197992770,276cyclictest3748-21kworker/u16:0+efi_rts_wq10:55:133
6196992770,276cyclictest32043-21kworker/u16:1+efi_rts_wq08:42:032
6196992760,275cyclictest20328-21kworker/u16:1+efi_rts_wq11:55:132
6196992760,275cyclictest15536-21kworker/u16:0+efi_rts_wq12:35:132
6196992760,273cyclictest20555-21kworker/u16:2+efi_rts_wq08:30:122
6195992760,275cyclictest32043-21kworker/u16:1+efi_rts_wq07:50:131
6195992710,270cyclictest20555-21kworker/u16:2+efi_rts_wq08:15:121
6197992700,269cyclictest32043-21kworker/u16:1+efi_rts_wq09:15:133
6195992700,269cyclictest32043-21kworker/u16:1+efi_rts_wq11:10:121
6192992700,269cyclictest32043-21kworker/u16:1+efi_rts_wq08:10:100
6197992680,267cyclictest20555-21kworker/u16:2+efi_rts_wq07:10:133
6195992680,267cyclictest32043-21kworker/u16:1+efi_rts_wq09:15:141
6197992670,266cyclictest15536-21kworker/u16:0+efi_rts_wq12:02:393
6197992660,265cyclictest32043-21kworker/u16:1+efi_rts_wq10:42:243
6195992660,263cyclictest20555-21kworker/u16:2+efi_rts_wq07:35:131
6197992650,264cyclictest20555-21kworker/u16:2+efi_rts_wq09:05:113
6196992650,264cyclictest32043-21kworker/u16:1+efi_rts_wq09:50:112
6197992640,263cyclictest3748-21kworker/u16:0+efi_rts_wq11:00:123
6196992630,262cyclictest32043-21kworker/u16:1+efi_rts_wq10:30:112
6192992610,260cyclictest32043-21kworker/u16:1+efi_rts_wq10:00:140
6195992600,259cyclictest20555-21kworker/u16:2+efi_rts_wq09:07:071
6192992590,258cyclictest32043-21kworker/u16:1+efi_rts_wq08:00:120
6192992590,258cyclictest20555-21kworker/u16:2+efi_rts_wq07:45:110
6192992590,258cyclictest12970-21kworker/u16:3+efi_rts_wq11:30:130
6197992580,256cyclictest15536-21kworker/u16:0+efi_rts_wq11:35:143
6192992530,252cyclictest12970-21kworker/u16:3+efi_rts_wq11:07:290
6192992530,252cyclictest12970-21kworker/u16:3+efi_rts_wq11:07:290
6197992520,251cyclictest15536-21kworker/u16:0+efi_rts_wq12:37:463
6195992520,251cyclictest12970-21kworker/u16:3+efi_rts_wq11:25:131
6196992510,250cyclictest20555-21kworker/u16:2+efi_rts_wq08:47:042
6195992510,250cyclictest32043-21kworker/u16:1+efi_rts_wq10:05:121
6196992480,247cyclictest15536-21kworker/u16:0+efi_rts_wq11:35:132
6195992480,247cyclictest20555-21kworker/u16:2+efi_rts_wq10:17:191
6195992480,247cyclictest20555-21kworker/u16:2+efi_rts_wq07:10:131
6195992450,244cyclictest32043-21kworker/u16:1+efi_rts_wq09:52:151
6195992430,242cyclictest3748-21kworker/u16:0+efi_rts_wq11:00:121
6195992430,242cyclictest20555-21kworker/u16:2+efi_rts_wq07:26:481
6195992420,241cyclictest20555-21kworker/u16:2+efi_rts_wq07:40:141
6195992400,239cyclictest20555-21kworker/u16:2+efi_rts_wq09:35:121
6196992390,238cyclictest32043-21kworker/u16:1+efi_rts_wq07:30:132
6195992390,238cyclictest20555-21kworker/u16:2+efi_rts_wq09:57:161
6196992370,236cyclictest20555-21kworker/u16:2+efi_rts_wq07:25:122
6197992360,235cyclictest15536-21kworker/u16:0+efi_rts_wq11:45:123
6195992340,233cyclictest32043-21kworker/u16:1+efi_rts_wq07:30:131
6192992340,233cyclictest20555-21kworker/u16:2+efi_rts_wq08:45:130
6196992330,232cyclictest15536-21kworker/u16:0+efi_rts_wq12:20:122
6195992320,230cyclictest20555-21kworker/u16:2+efi_rts_wq10:35:131
6197992310,230cyclictest15536-21kworker/u16:0+efi_rts_wq12:05:133
6197992300,229cyclictest32043-21kworker/u16:1+efi_rts_wq11:05:153
6197992300,229cyclictest32043-21kworker/u16:1+efi_rts_wq11:05:153
6197992300,229cyclictest32043-21kworker/u16:1+efi_rts_wq10:10:123
6195992300,229cyclictest12970-21kworker/u16:3+efi_rts_wq11:15:131
6192992300,229cyclictest20555-21kworker/u16:2+efi_rts_wq08:55:150
6192992300,229cyclictest20555-21kworker/u16:2+efi_rts_wq08:15:120
6196992290,228cyclictest20555-21kworker/u16:2+efi_rts_wq09:55:132
6196992290,228cyclictest15536-21kworker/u16:0+efi_rts_wq11:40:122
6192992280,225cyclictest15536-21kworker/u16:0+efi_rts_wq12:30:160
6196992270,226cyclictest20555-21kworker/u16:2+efi_rts_wq10:40:122
6197992240,223cyclictest20555-21kworker/u16:2+efi_rts_wq07:40:143
6197992220,221cyclictest20555-21kworker/u16:2+efi_rts_wq08:55:143
6197992210,220cyclictest32043-21kworker/u16:1+efi_rts_wq10:45:143
6196992210,220cyclictest15536-21kworker/u16:0+efi_rts_wq11:45:122
6195992210,220cyclictest20555-21kworker/u16:2+efi_rts_wq09:25:111
6192992200,219cyclictest32043-21kworker/u16:1+efi_rts_wq10:05:120
6196992180,217cyclictest32043-21kworker/u16:1+efi_rts_wq10:00:132
6192992180,217cyclictest32043-21kworker/u16:1+efi_rts_wq10:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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