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2026-07-17 - 23:31

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 Fri Jul 17, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281802318310,5sleep30-21swapper/307:09:463
280762318303,5sleep00-21swapper/007:08:260
279642318304,5sleep10-21swapper/107:06:591
279052315308,5sleep20-21swapper/207:06:162
28465993000,299cyclictest20072-21kworker/u16:3+efi_rts_wq07:15:022
28465992990,298cyclictest20072-21kworker/u16:3+efi_rts_wq07:55:142
28463992980,297cyclictest25892-21kworker/u16:2+efi_rts_wq09:00:130
28465992970,296cyclictest27986-21kworker/u16:0+efi_rts_wq11:40:142
28466992960,295cyclictest25892-21kworker/u16:2+efi_rts_wq09:30:123
28464992960,295cyclictest1093-21kworker/u16:2+efi_rts_wq11:10:151
28466992940,293cyclictest25892-21kworker/u16:2+efi_rts_wq07:45:133
28466992930,292cyclictest30117-21kworker/u16:1+efi_rts_wq10:37:333
28466992930,292cyclictest30117-21kworker/u16:1+efi_rts_wq10:15:143
28464992930,292cyclictest27986-21kworker/u16:0+efi_rts_wq11:50:121
28466992900,289cyclictest20072-21kworker/u16:3+efi_rts_wq07:30:133
28465992900,289cyclictest24283-21kworker/u16:3+efi_rts_wq11:55:122
28464992900,289cyclictest27986-21kworker/u16:0+efi_rts_wq11:15:121
28465992890,288cyclictest27986-21kworker/u16:0+efi_rts_wq12:20:122
28465992890,286cyclictest27986-21kworker/u16:0+efi_rts_wq11:50:132
28466992880,287cyclictest25892-21kworker/u16:2+efi_rts_wq08:32:093
28463992880,287cyclictest20072-21kworker/u16:3+efi_rts_wq08:50:150
28466992870,285cyclictest25892-21kworker/u16:2+efi_rts_wq09:40:143
28464992870,286cyclictest27986-21kworker/u16:0+efi_rts_wq11:07:371
28464992870,286cyclictest25892-21kworker/u16:2+efi_rts_wq08:42:121
28466992860,285cyclictest27986-21kworker/u16:0+efi_rts_wq11:27:413
28464992860,285cyclictest27986-21kworker/u16:0+efi_rts_wq10:25:141
28464992840,283cyclictest27986-21kworker/u16:0+efi_rts_wq12:35:121
28466992810,280cyclictest25892-21kworker/u16:2+efi_rts_wq09:12:173
28465992810,279cyclictest30117-21kworker/u16:1+efi_rts_wq11:05:132
28464992810,280cyclictest30117-21kworker/u16:1+efi_rts_wq09:55:141
28463992810,280cyclictest27986-21kworker/u16:0+efi_rts_wq10:45:130
28463992790,278cyclictest20072-21kworker/u16:3+efi_rts_wq08:22:080
28466992780,277cyclictest25892-21kworker/u16:2+efi_rts_wq07:57:043
28466992770,276cyclictest20072-21kworker/u16:3+efi_rts_wq08:20:123
28465992770,276cyclictest25892-21kworker/u16:2+efi_rts_wq08:25:122
28465992770,275cyclictest25892-21kworker/u16:2+efi_rts_wq09:20:132
28464992770,276cyclictest20072-21kworker/u16:3+efi_rts_wq07:50:141
28466992760,275cyclictest20072-21kworker/u16:3+efi_rts_wq07:16:563
28466992750,274cyclictest25892-21kworker/u16:2+efi_rts_wq07:40:133
28463992750,274cyclictest30117-21kworker/u16:1+efi_rts_wq10:20:130
28463992750,274cyclictest27986-21kworker/u16:0+efi_rts_wq11:35:110
28463992750,274cyclictest25892-21kworker/u16:2+efi_rts_wq09:35:130
28465992740,273cyclictest20072-21kworker/u16:3+efi_rts_wq07:37:012
28466992730,272cyclictest27986-21kworker/u16:0+efi_rts_wq11:35:123
28466992730,271cyclictest30117-21kworker/u16:1+efi_rts_wq10:50:133
28463992720,271cyclictest27986-21kworker/u16:0+efi_rts_wq10:57:350
28466992710,270cyclictest24283-21kworker/u16:3+efi_rts_wq12:37:543
28464992710,270cyclictest27986-21kworker/u16:0+efi_rts_wq09:45:141
28466992700,269cyclictest25892-21kworker/u16:2+efi_rts_wq08:10:113
28464992700,269cyclictest20072-21kworker/u16:3+efi_rts_wq08:50:161
28464992700,269cyclictest20072-21kworker/u16:3+efi_rts_wq07:15:011
28466992680,267cyclictest24283-21kworker/u16:3+efi_rts_wq12:10:133
28464992680,267cyclictest24283-21kworker/u16:3+efi_rts_wq12:00:121
28463992670,266cyclictest27986-21kworker/u16:0+efi_rts_wq12:12:500
28463992660,265cyclictest30117-21kworker/u16:1+efi_rts_wq09:50:110
28465992650,264cyclictest25892-21kworker/u16:2+efi_rts_wq07:45:142
28466992630,262cyclictest25892-21kworker/u16:2+efi_rts_wq08:57:143
28465992630,262cyclictest27986-21kworker/u16:0+efi_rts_wq10:45:142
28463992630,262cyclictest30117-21kworker/u16:1+efi_rts_wq10:15:130
28464992610,260cyclictest20072-21kworker/u16:3+efi_rts_wq08:00:141
28463992610,260cyclictest27986-21kworker/u16:0+efi_rts_wq11:20:140
28466992600,259cyclictest27986-21kworker/u16:0+efi_rts_wq11:52:453
28466992590,257cyclictest27986-21kworker/u16:0+efi_rts_wq10:32:313
28465992590,258cyclictest1093-21kworker/u16:2+efi_rts_wq11:12:372
28465992530,252cyclictest25892-21kworker/u16:2+efi_rts_wq09:25:112
28465992530,252cyclictest25892-21kworker/u16:2+efi_rts_wq08:45:122
28465992500,249cyclictest27986-21kworker/u16:0+efi_rts_wq10:40:122
28464992500,249cyclictest30910-21kworker/u16:3+efi_rts_wq11:00:131
28464992490,248cyclictest25892-21kworker/u16:2+efi_rts_wq07:25:131
28464992490,248cyclictest20072-21kworker/u16:3+efi_rts_wq07:20:131
28464992460,245cyclictest27986-21kworker/u16:0+efi_rts_wq11:30:151
28463992450,244cyclictest20072-21kworker/u16:3+efi_rts_wq08:15:140
28465992430,242cyclictest20072-21kworker/u16:3+efi_rts_wq07:50:142
28464992430,242cyclictest20072-21kworker/u16:3+efi_rts_wq09:15:141
28463992410,240cyclictest1093-21kworker/u16:2+efi_rts_wq11:40:140
28463992400,239cyclictest1093-21kworker/u16:2+efi_rts_wq11:25:120
28466992390,238cyclictest25892-21kworker/u16:2+efi_rts_wq07:11:543
28463992380,237cyclictest20072-21kworker/u16:3+efi_rts_wq07:20:130
28466992370,236cyclictest27986-21kworker/u16:0+efi_rts_wq12:15:123
28466992350,234cyclictest25892-21kworker/u16:2+efi_rts_wq08:35:143
28465992350,234cyclictest30117-21kworker/u16:1+efi_rts_wq09:55:142
28466992310,230cyclictest27986-21kworker/u16:0+efi_rts_wq10:42:333
28463992310,230cyclictest25892-21kworker/u16:2+efi_rts_wq07:15:130
28466992300,229cyclictest20072-21kworker/u16:3+efi_rts_wq08:02:043
28465992280,227cyclictest30117-21kworker/u16:1+efi_rts_wq10:02:262
28465992280,227cyclictest30117-21kworker/u16:1+efi_rts_wq10:02:252
28465992280,227cyclictest25892-21kworker/u16:2+efi_rts_wq09:05:132
28464992280,227cyclictest25892-21kworker/u16:2+efi_rts_wq08:37:101
28464992270,225cyclictest30117-21kworker/u16:1+efi_rts_wq10:50:131
28464992260,225cyclictest24283-21kworker/u16:3+efi_rts_wq12:17:501
28466992240,223cyclictest27986-21kworker/u16:0+efi_rts_wq10:55:143
28464992230,222cyclictest25892-21kworker/u16:2+efi_rts_wq08:55:131
28463992230,222cyclictest25892-21kworker/u16:2+efi_rts_wq08:05:160
28465992200,219cyclictest20072-21kworker/u16:3+efi_rts_wq08:30:142
28463992200,219cyclictest24283-21kworker/u16:3+efi_rts_wq11:55:120
28464992190,218cyclictest25892-21kworker/u16:2+efi_rts_wq08:47:111
28464992170,216cyclictest20072-21kworker/u16:3+efi_rts_wq09:02:151
28463992170,215cyclictest27986-21kworker/u16:0+efi_rts_wq11:15:120
28465992160,214cyclictest1093-21kworker/u16:2+efi_rts_wq11:45:122
28464992160,215cyclictest30117-21kworker/u16:1+efi_rts_wq10:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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