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2026-08-23 - 21:40

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 Aug 23, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
284382319308,9sleep00-21swapper/007:08:170
282652316310,4sleep20-21swapper/207:06:072
282262315308,5sleep30-21swapper/307:05:363
284392314307,5sleep10-21swapper/107:08:181
28945993020,301cyclictest15721-21kworker/u16:0+efi_rts_wq10:40:131
28948992990,298cyclictest15721-21kworker/u16:0+efi_rts_wq11:15:163
28942992990,298cyclictest4608-21kworker/u16:2+efi_rts_wq10:05:130
28948992980,297cyclictest8788-21kworker/u16:1+efi_rts_wq09:20:123
28946992980,297cyclictest25589-21kworker/u16:2+efi_rts_wq12:00:132
28948992970,296cyclictest4608-21kworker/u16:2+efi_rts_wq07:15:133
28946992970,296cyclictest4608-21kworker/u16:2+efi_rts_wq07:20:152
28948992940,293cyclictest8788-21kworker/u16:1+efi_rts_wq07:55:143
28946992930,292cyclictest8788-21kworker/u16:1+efi_rts_wq09:50:122
28946992930,292cyclictest8788-21kworker/u16:1+efi_rts_wq07:30:152
28945992930,292cyclictest4608-21kworker/u16:2+efi_rts_wq09:05:131
28948992910,290cyclictest8788-21kworker/u16:1+efi_rts_wq09:45:153
28948992910,290cyclictest15721-21kworker/u16:0+efi_rts_wq10:57:363
28942992910,288cyclictest4608-21kworker/u16:2+efi_rts_wq09:40:120
28945992900,289cyclictest15721-21kworker/u16:0+efi_rts_wq11:00:131
28948992890,288cyclictest4608-21kworker/u16:2+efi_rts_wq07:40:123
28946992890,287cyclictest25589-21kworker/u16:2+efi_rts_wq11:37:412
28946992880,287cyclictest15721-21kworker/u16:0+efi_rts_wq11:05:132
28945992870,286cyclictest15721-21kworker/u16:0+efi_rts_wq11:10:141
28948992860,285cyclictest15721-21kworker/u16:0+efi_rts_wq11:10:133
28946992860,285cyclictest4608-21kworker/u16:2+efi_rts_wq08:05:142
28946992860,285cyclictest4608-21kworker/u16:2+efi_rts_wq08:05:132
28945992860,285cyclictest8788-21kworker/u16:1+efi_rts_wq10:35:131
28945992860,285cyclictest8788-21kworker/u16:1+efi_rts_wq07:25:121
28942992860,285cyclictest8788-21kworker/u16:1+efi_rts_wq07:45:140
28946992850,284cyclictest25589-21kworker/u16:2+efi_rts_wq12:30:152
28945992850,284cyclictest15721-21kworker/u16:0+efi_rts_wq12:05:131
28945992850,282cyclictest15721-21kworker/u16:0+efi_rts_wq12:25:121
28948992830,282cyclictest4608-21kworker/u16:2+efi_rts_wq07:21:553
28946992830,282cyclictest8788-21kworker/u16:1+efi_rts_wq09:10:132
28946992830,282cyclictest8788-21kworker/u16:1+efi_rts_wq09:00:122
28945992830,282cyclictest15721-21kworker/u16:0+efi_rts_wq12:10:131
28946992820,281cyclictest25589-21kworker/u16:2+efi_rts_wq11:22:392
28945992820,281cyclictest8788-21kworker/u16:1+efi_rts_wq08:22:051
28942992820,281cyclictest15721-21kworker/u16:0+efi_rts_wq10:37:310
28945992810,280cyclictest25589-21kworker/u16:2+efi_rts_wq10:50:131
28945992810,280cyclictest15721-21kworker/u16:0+efi_rts_wq12:20:131
28946992790,278cyclictest8788-21kworker/u16:1+efi_rts_wq09:35:142
28946992790,278cyclictest25589-21kworker/u16:2+efi_rts_wq10:55:122
28942992790,278cyclictest4608-21kworker/u16:2+efi_rts_wq09:15:150
28942992790,278cyclictest25589-21kworker/u16:2+efi_rts_wq11:25:120
28945992780,277cyclictest4608-21kworker/u16:2+efi_rts_wq08:15:141
28948992770,276cyclictest8788-21kworker/u16:1+efi_rts_wq08:55:143
28945992770,276cyclictest8788-21kworker/u16:1+efi_rts_wq08:37:081
28945992770,276cyclictest4608-21kworker/u16:2+efi_rts_wq09:57:241
28946992760,275cyclictest25589-21kworker/u16:2+efi_rts_wq12:35:112
28945992750,274cyclictest8788-21kworker/u16:1+efi_rts_wq09:30:121
28942992730,272cyclictest4608-21kworker/u16:2+efi_rts_wq10:17:280
28948992720,270cyclictest15721-21kworker/u16:0+efi_rts_wq10:45:133
28942992720,271cyclictest8788-21kworker/u16:1+efi_rts_wq08:25:110
28942992720,269cyclictest8788-21kworker/u16:1+efi_rts_wq10:00:120
28945992700,269cyclictest25589-21kworker/u16:2+efi_rts_wq11:50:131
28942992690,268cyclictest4608-21kworker/u16:2+efi_rts_wq07:40:110
28948992680,267cyclictest8788-21kworker/u16:1+efi_rts_wq08:10:123
28948992670,266cyclictest4608-21kworker/u16:2+efi_rts_wq08:50:123
28942992660,265cyclictest4608-21kworker/u16:2+efi_rts_wq07:16:530
28946992640,263cyclictest8788-21kworker/u16:1+efi_rts_wq07:10:132
28948992630,262cyclictest4608-21kworker/u16:2+efi_rts_wq08:05:153
28948992630,262cyclictest4608-21kworker/u16:2+efi_rts_wq08:05:143
28945992630,262cyclictest8788-21kworker/u16:1+efi_rts_wq08:00:131
28945992630,262cyclictest4608-21kworker/u16:2+efi_rts_wq08:50:121
28945992620,261cyclictest4608-21kworker/u16:2+efi_rts_wq09:17:161
28948992610,260cyclictest4608-21kworker/u16:2+efi_rts_wq10:22:293
28942992610,260cyclictest8788-21kworker/u16:1+efi_rts_wq08:20:140
28945992600,259cyclictest25589-21kworker/u16:2+efi_rts_wq12:15:131
28948992590,258cyclictest15721-21kworker/u16:0+efi_rts_wq11:30:123
28945992580,257cyclictest8788-21kworker/u16:1+efi_rts_wq10:10:121
28946992540,253cyclictest4608-21kworker/u16:2+efi_rts_wq08:52:112
28945992540,253cyclictest25589-21kworker/u16:2+efi_rts_wq11:55:121
28945992530,250cyclictest8788-21kworker/u16:1+efi_rts_wq07:10:121
28942992530,252cyclictest8788-21kworker/u16:1+efi_rts_wq09:30:120
28948992510,250cyclictest15721-21kworker/u16:0+efi_rts_wq11:40:133
28942992510,250cyclictest8788-21kworker/u16:1+efi_rts_wq10:10:130
28948992500,249cyclictest8788-21kworker/u16:1+efi_rts_wq10:35:143
28948992470,246cyclictest4608-21kworker/u16:2+efi_rts_wq10:15:143
28945992470,246cyclictest8788-21kworker/u16:1+efi_rts_wq08:47:101
28942992470,246cyclictest8788-21kworker/u16:1+efi_rts_wq08:00:120
28945992440,243cyclictest4608-21kworker/u16:2+efi_rts_wq09:42:211
28942992430,242cyclictest4608-21kworker/u16:2+efi_rts_wq08:15:140
28948992400,239cyclictest15721-21kworker/u16:0+efi_rts_wq12:02:463
28945992390,238cyclictest15721-21kworker/u16:0+efi_rts_wq11:20:141
28945992380,237cyclictest4608-21kworker/u16:2+efi_rts_wq07:50:121
28945992370,236cyclictest4608-21kworker/u16:2+efi_rts_wq07:35:131
28946992350,234cyclictest8788-21kworker/u16:1+efi_rts_wq09:45:152
28946992350,234cyclictest4608-21kworker/u16:2+efi_rts_wq08:42:092
28948992330,232cyclictest8788-21kworker/u16:1+efi_rts_wq10:25:143
28948992330,232cyclictest25589-21kworker/u16:2+efi_rts_wq12:35:113
28945992320,231cyclictest25589-21kworker/u16:2+efi_rts_wq12:00:141
28942992320,231cyclictest8788-21kworker/u16:1+efi_rts_wq09:50:130
28942992310,229cyclictest15721-21kworker/u16:0+efi_rts_wq10:40:140
28948992290,228cyclictest4608-21kworker/u16:2+efi_rts_wq08:40:123
28945992280,227cyclictest4608-21kworker/u16:2+efi_rts_wq07:15:011
28946992260,225cyclictest8788-21kworker/u16:1+efi_rts_wq10:30:132
28942992250,224cyclictest15721-21kworker/u16:0+efi_rts_wq10:45:120
28948992240,223cyclictest4608-21kworker/u16:2+efi_rts_wq09:05:143
28945992240,223cyclictest4608-21kworker/u16:2+efi_rts_wq09:25:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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