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2026-04-28 - 00:32

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 50 highest latencies:
System rackcslot3s.osadl.org (updated Mon Apr 27, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79192326303,5sleep30-21swapper/307:09:493
78702323308,5sleep10-21swapper/107:09:111
79362317309,5sleep20-21swapper/207:10:002
8199993160,315cyclictest15764-21kworker/u16:0+efi_rts_wq07:30:110
8202993140,313cyclictest6415-21kworker/u16:1+efi_rts_wq09:00:123
77502314307,5sleep00-21swapper/007:07:390
8199993130,312cyclictest25999-21kworker/u16:1+efi_rts_wq11:20:120
8202993110,310cyclictest20198-21kworker/u16:0+efi_rts_wq11:10:123
8200993090,308cyclictest22329-21kworker/u16:2+efi_rts_wq08:25:151
8200993070,305cyclictest20198-21kworker/u16:0+efi_rts_wq10:55:141
8199993070,304cyclictest19624-21kworker/u16:0+efi_rts_wq12:05:120
8202993060,305cyclictest6254-21kworker/u16:2+efi_rts_wq12:25:113
8202993060,305cyclictest15764-21kworker/u16:0+efi_rts_wq07:35:143
8202993060,305cyclictest15764-21kworker/u16:0+efi_rts_wq07:35:133
8201993040,303cyclictest22329-21kworker/u16:2+efi_rts_wq08:15:142
8201993040,303cyclictest14776-21kworker/u16:3+efi_rts_wq11:05:132
8199993040,303cyclictest6415-21kworker/u16:1+efi_rts_wq09:45:130
8199993040,303cyclictest6415-21kworker/u16:1+efi_rts_wq09:40:140
8202993030,302cyclictest6415-21kworker/u16:1+efi_rts_wq08:40:133
8200993030,302cyclictest22329-21kworker/u16:2+efi_rts_wq07:50:121
8201993020,301cyclictest15764-21kworker/u16:0+efi_rts_wq07:15:132
8200993020,301cyclictest6254-21kworker/u16:2+efi_rts_wq12:18:211
8200993020,301cyclictest22329-21kworker/u16:2+efi_rts_wq08:15:141
8200993010,300cyclictest22329-21kworker/u16:2+efi_rts_wq08:05:121
8202993000,299cyclictest20198-21kworker/u16:0+efi_rts_wq10:10:113
8202992990,298cyclictest22329-21kworker/u16:2+efi_rts_wq07:50:123
8202992990,298cyclictest15764-21kworker/u16:0+efi_rts_wq07:25:133
8200992990,298cyclictest6415-21kworker/u16:1+efi_rts_wq08:32:371
8199992990,298cyclictest20456-21kworker/u16:3+efi_rts_wq08:02:330
8200992980,297cyclictest20456-21kworker/u16:3+efi_rts_wq07:37:281
8200992980,297cyclictest20456-21kworker/u16:3+efi_rts_wq07:37:271
8199992980,297cyclictest22329-21kworker/u16:2+efi_rts_wq08:42:400
8202992970,296cyclictest20198-21kworker/u16:0+efi_rts_wq10:55:143
8199992970,296cyclictest14219-21kworker/u16:1+efi_rts_wq11:55:130
8202992940,293cyclictest23290-21kworker/u16:2+efi_rts_wq07:10:133
8202992930,292cyclictest19624-21kworker/u16:0+efi_rts_wq12:08:193
8200992930,292cyclictest6415-21kworker/u16:1+efi_rts_wq08:45:141
8199992920,289cyclictest20198-21kworker/u16:0+efi_rts_wq10:20:130
8202992910,290cyclictest6415-21kworker/u16:1+efi_rts_wq10:38:013
8201992910,290cyclictest20198-21kworker/u16:0+efi_rts_wq09:25:132
8200992880,287cyclictest22329-21kworker/u16:2+efi_rts_wq07:40:121
8200992870,286cyclictest20198-21kworker/u16:0+efi_rts_wq09:55:121
8202992860,285cyclictest20456-21kworker/u16:3+efi_rts_wq07:55:143
8202992860,284cyclictest20198-21kworker/u16:0+efi_rts_wq11:30:123
8199992860,285cyclictest20198-21kworker/u16:0+efi_rts_wq09:20:140
8202992850,284cyclictest20456-21kworker/u16:3+efi_rts_wq07:20:133
8200992850,284cyclictest20198-21kworker/u16:0+efi_rts_wq11:13:061
8199992850,284cyclictest20198-21kworker/u16:0+efi_rts_wq10:25:140
8199992840,283cyclictest20198-21kworker/u16:0+efi_rts_wq11:40:110
8200992830,282cyclictest15764-21kworker/u16:0+efi_rts_wq07:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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