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2026-08-31 - 04:25

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 Mon Aug 31, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36892320305,5sleep30-21swapper/319:05:263
39572317309,5sleep20-21swapper/219:08:532
22032316308,5sleep10-21swapper/119:05:041
38152314307,5sleep00-21swapper/019:07:040
4309993040,301cyclictest9087-21kworker/u16:0+efi_rts_wq19:50:111
4309993030,302cyclictest31350-21kworker/u16:3+efi_rts_wq22:50:121
4311993000,299cyclictest9087-21kworker/u16:0+efi_rts_wq22:00:113
4309993000,299cyclictest14106-21kworker/u16:2+efi_rts_wq23:39:481
4308993000,299cyclictest20634-21kworker/u16:1+efi_rts_wq19:25:130
4308992990,298cyclictest20634-21kworker/u16:1+efi_rts_wq19:39:030
4310992970,296cyclictest20634-21kworker/u16:1+efi_rts_wq20:15:122
4310992960,293cyclictest32514-21kworker/u16:1+efi_rts_wq00:25:122
4309992960,295cyclictest20634-21kworker/u16:1+efi_rts_wq23:05:141
4310992940,291cyclictest20634-21kworker/u16:1+efi_rts_wq20:55:122
4309992940,293cyclictest20634-21kworker/u16:1+efi_rts_wq21:24:221
4310992930,292cyclictest9087-21kworker/u16:0+efi_rts_wq22:10:132
4308992930,292cyclictest20634-21kworker/u16:1+efi_rts_wq22:35:140
4311992920,291cyclictest9087-21kworker/u16:0+efi_rts_wq19:20:153
4310992920,291cyclictest20634-21kworker/u16:1+efi_rts_wq23:19:432
4308992910,290cyclictest20634-21kworker/u16:1+efi_rts_wq19:15:010
4310992900,289cyclictest9087-21kworker/u16:0+efi_rts_wq21:35:142
4310992900,289cyclictest9087-21kworker/u16:0+efi_rts_wq21:35:132
4311992890,288cyclictest20634-21kworker/u16:1+efi_rts_wq23:30:133
4311992880,287cyclictest32514-21kworker/u16:1+efi_rts_wq00:05:133
4311992880,287cyclictest20634-21kworker/u16:1+efi_rts_wq20:15:123
4310992870,286cyclictest20634-21kworker/u16:1+efi_rts_wq22:55:132
4311992850,284cyclictest9087-21kworker/u16:0+efi_rts_wq20:45:133
4308992850,284cyclictest20634-21kworker/u16:1+efi_rts_wq20:39:130
4311992830,282cyclictest27568-21kworker/u16:0+efi_rts_wq23:44:483
4309992830,282cyclictest9087-21kworker/u16:0+efi_rts_wq20:50:131
4308992830,281cyclictest32514-21kworker/u16:1+efi_rts_wq00:00:130
4309992820,281cyclictest9087-21kworker/u16:0+efi_rts_wq21:35:151
4309992820,281cyclictest9087-21kworker/u16:0+efi_rts_wq21:35:141
4308992820,280cyclictest20634-21kworker/u16:1+efi_rts_wq23:05:120
4310992810,280cyclictest14106-21kworker/u16:2+efi_rts_wq23:35:142
4308992810,280cyclictest9087-21kworker/u16:0+efi_rts_wq19:23:590
4311992790,278cyclictest9087-21kworker/u16:0+efi_rts_wq20:59:163
4310992790,278cyclictest9087-21kworker/u16:0+efi_rts_wq20:54:172
4308992790,278cyclictest20634-21kworker/u16:1+efi_rts_wq22:55:140
4310992780,277cyclictest9087-21kworker/u16:0+efi_rts_wq19:50:112
4310992780,277cyclictest32514-21kworker/u16:1+efi_rts_wq00:35:112
4310992780,277cyclictest14106-21kworker/u16:2+efi_rts_wq23:14:422
4310992780,276cyclictest31350-21kworker/u16:3+efi_rts_wq23:00:122
4309992780,277cyclictest27568-21kworker/u16:0+efi_rts_wq23:50:121
4309992770,276cyclictest9087-21kworker/u16:0+efi_rts_wq22:10:141
4310992750,274cyclictest14106-21kworker/u16:2+efi_rts_wq23:24:442
4311992740,273cyclictest20634-21kworker/u16:1+efi_rts_wq19:30:133
4308992740,273cyclictest27568-21kworker/u16:0+efi_rts_wq23:50:120
4308992730,272cyclictest20634-21kworker/u16:1+efi_rts_wq23:20:140
4310992720,271cyclictest20634-21kworker/u16:1+efi_rts_wq22:30:152
4308992720,271cyclictest9087-21kworker/u16:0+efi_rts_wq21:05:130
4311992700,269cyclictest31350-21kworker/u16:3+efi_rts_wq23:10:123
4311992700,269cyclictest20634-21kworker/u16:1+efi_rts_wq22:19:323
4310992700,268cyclictest9087-21kworker/u16:0+efi_rts_wq22:40:112
4309992680,267cyclictest25257-21kworker/u16:3+efi_rts_wq23:45:141
4309992680,267cyclictest20634-21kworker/u16:1+efi_rts_wq19:45:121
4311992670,266cyclictest32514-21kworker/u16:1+efi_rts_wq23:55:133
4309992670,264cyclictest20634-21kworker/u16:1+efi_rts_wq21:50:131
4309992660,265cyclictest14106-21kworker/u16:2+efi_rts_wq23:25:141
4310992650,264cyclictest9087-21kworker/u16:0+efi_rts_wq19:35:122
4310992650,263cyclictest31350-21kworker/u16:3+efi_rts_wq22:45:112
4309992650,264cyclictest25257-21kworker/u16:3+efi_rts_wq00:30:141
4311992640,262cyclictest20634-21kworker/u16:1+efi_rts_wq20:40:123
4308992640,262cyclictest32514-21kworker/u16:1+efi_rts_wq23:55:130
4309992620,261cyclictest9087-21kworker/u16:0+efi_rts_wq21:25:141
4309992620,261cyclictest20634-21kworker/u16:1+efi_rts_wq21:10:131
4308992620,261cyclictest9087-21kworker/u16:0+efi_rts_wq20:20:130
4311992600,259cyclictest9087-21kworker/u16:0+efi_rts_wq19:10:123
4309992600,259cyclictest9087-21kworker/u16:0+efi_rts_wq20:10:121
4310992590,257cyclictest20634-21kworker/u16:1+efi_rts_wq22:35:142
4309992590,257cyclictest9087-21kworker/u16:0+efi_rts_wq20:20:141
4311992580,257cyclictest31350-21kworker/u16:3+efi_rts_wq22:44:363
4309992580,257cyclictest32514-21kworker/u16:1+efi_rts_wq00:20:131
4308992580,256cyclictest20634-21kworker/u16:1+efi_rts_wq23:30:130
4311992570,256cyclictest20634-21kworker/u16:1+efi_rts_wq21:55:123
4310992560,255cyclictest20634-21kworker/u16:1+efi_rts_wq21:19:202
4308992550,254cyclictest20634-21kworker/u16:1+efi_rts_wq21:50:130
4311992540,253cyclictest20634-21kworker/u16:1+efi_rts_wq22:25:133
4308992510,250cyclictest9087-21kworker/u16:0+efi_rts_wq22:34:340
4309992460,245cyclictest20634-21kworker/u16:1+efi_rts_wq20:55:121
4309992460,245cyclictest20634-21kworker/u16:1+efi_rts_wq20:34:121
4308992460,245cyclictest20634-21kworker/u16:1+efi_rts_wq22:25:140
4308992440,243cyclictest9087-21kworker/u16:0+efi_rts_wq22:15:130
4308992440,243cyclictest14106-21kworker/u16:2+efi_rts_wq23:25:140
4308992430,242cyclictest20634-21kworker/u16:1+efi_rts_wq22:05:130
4311992410,240cyclictest9087-21kworker/u16:0+efi_rts_wq20:05:123
4308992410,240cyclictest20634-21kworker/u16:1+efi_rts_wq20:25:120
4311992400,239cyclictest20634-21kworker/u16:1+efi_rts_wq22:20:133
4308992370,236cyclictest9087-21kworker/u16:0+efi_rts_wq19:54:040
4311992360,235cyclictest20634-21kworker/u16:1+efi_rts_wq20:00:143
4310992360,235cyclictest27568-21kworker/u16:0+efi_rts_wq23:51:062
4310992360,235cyclictest20634-21kworker/u16:1+efi_rts_wq21:30:152
4309992350,234cyclictest9087-21kworker/u16:0+efi_rts_wq21:34:241
4311992330,232cyclictest9087-21kworker/u16:0+efi_rts_wq21:00:113
4311992320,231cyclictest31350-21kworker/u16:3+efi_rts_wq22:45:113
4311992300,229cyclictest9087-21kworker/u16:0+efi_rts_wq21:20:153
4311992300,229cyclictest9087-21kworker/u16:0+efi_rts_wq19:55:143
4310992300,229cyclictest9087-21kworker/u16:0+efi_rts_wq19:44:032
4309992300,229cyclictest20634-21kworker/u16:1+efi_rts_wq22:30:151
4308992300,229cyclictest9087-21kworker/u16:0+efi_rts_wq21:45:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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