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2025-12-16 - 06:39

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 Dec 16, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15732321314,4sleep00-21swapper/019:08:350
13882321306,5sleep10-21swapper/119:06:121
16222317303,4sleep20-21swapper/219:09:132
1951993160,315cyclictest8494-21kworker/u16:0+efi_rts_wq19:10:111
15862316309,5sleep30-21swapper/319:08:453
1951993130,312cyclictest8494-21kworker/u16:0+efi_rts_wq19:20:081
1953993120,311cyclictest8129-21kworker/u16:3+efi_rts_wq22:25:103
1950993110,310cyclictest8496-21kworker/u16:4+efi_rts_wq19:49:570
1950993090,308cyclictest18365-21kworker/u16:1+efi_rts_wq00:30:490
1953993080,307cyclictest25195-21kworker/u16:0+efi_rts_wq20:05:103
1951993080,307cyclictest8494-21kworker/u16:0+efi_rts_wq19:15:111
1951993080,307cyclictest3687-21kworker/u16:0+efi_rts_wq23:40:111
1950993080,307cyclictest8129-21kworker/u16:3+efi_rts_wq22:55:120
1950993080,307cyclictest30651-21kworker/u16:2+efi_rts_wq00:00:120
1951993060,305cyclictest31788-21kworker/u16:2+efi_rts_wq21:05:101
1951993030,302cyclictest18365-21kworker/u16:1+efi_rts_wq00:25:111
1953993020,301cyclictest3467-21kworker/u16:0+efi_rts_wq00:15:103
1952993000,299cyclictest13630-21kworker/u16:0+efi_rts_wq21:40:112
1952992980,297cyclictest7628-21kworker/u16:3+efi_rts_wq20:55:102
1950992980,297cyclictest4036-21kworker/u16:2+efi_rts_wq22:15:250
1953992970,296cyclictest13630-21kworker/u16:0+efi_rts_wq20:55:113
1950992970,296cyclictest8129-21kworker/u16:3+efi_rts_wq22:40:300
1950992960,295cyclictest4036-21kworker/u16:2+efi_rts_wq21:55:100
1953992950,294cyclictest25195-21kworker/u16:0+efi_rts_wq20:30:043
1952992940,293cyclictest25195-21kworker/u16:0+efi_rts_wq20:45:102
1951992940,293cyclictest30651-21kworker/u16:2+efi_rts_wq00:35:501
1951992930,292cyclictest791-21kworker/u16:1+efi_rts_wq23:00:101
1951992930,292cyclictest31788-21kworker/u16:2+efi_rts_wq21:30:101
1953992920,291cyclictest8496-21kworker/u16:4+efi_rts_wq19:24:523
1953992920,291cyclictest8129-21kworker/u16:3+efi_rts_wq22:40:103
1952992920,291cyclictest7628-21kworker/u16:3+efi_rts_wq20:40:102
1951992920,291cyclictest8496-21kworker/u16:4+efi_rts_wq20:20:101
1950992920,291cyclictest16711-21kworker/u16:1+efi_rts_wq21:35:080
1953992910,290cyclictest19743-21kworker/u16:2+efi_rts_wq19:45:103
1951992910,290cyclictest3687-21kworker/u16:0+efi_rts_wq23:55:111
1951992910,288cyclictest8129-21kworker/u16:3+efi_rts_wq22:15:101
1952992900,289cyclictest8129-21kworker/u16:3+efi_rts_wq22:10:122
1953992890,288cyclictest13630-21kworker/u16:0+efi_rts_wq21:45:203
1952992890,288cyclictest13630-21kworker/u16:0+efi_rts_wq21:00:112
1951992880,287cyclictest19743-21kworker/u16:2+efi_rts_wq19:55:101
1952992870,286cyclictest31788-21kworker/u16:2+efi_rts_wq21:05:122
1950992870,286cyclictest25195-21kworker/u16:0+efi_rts_wq20:10:110
1951992860,285cyclictest13630-21kworker/u16:0+efi_rts_wq20:55:101
1953992850,284cyclictest8129-21kworker/u16:3+efi_rts_wq22:15:103
1952992830,282cyclictest16711-21kworker/u16:1+efi_rts_wq21:25:112
1951992830,282cyclictest25195-21kworker/u16:0+efi_rts_wq20:25:031
1952992810,280cyclictest17028-21kworker/u16:1+efi_rts_wq20:15:102
1953992800,279cyclictest14797-21kworker/u16:1+efi_rts_wq22:30:113
1953992800,276cyclictest3687-21kworker/u16:0+efi_rts_wq23:40:413
1952992790,278cyclictest18365-21kworker/u16:1+efi_rts_wq00:30:082
1951992790,278cyclictest8129-21kworker/u16:3+efi_rts_wq23:10:091
1950992780,277cyclictest8129-21kworker/u16:3+efi_rts_wq00:05:450
1950992780,277cyclictest31788-21kworker/u16:2+efi_rts_wq21:20:120
1953992770,276cyclictest19743-21kworker/u16:2+efi_rts_wq19:30:113
1953992760,275cyclictest16711-21kworker/u16:1+efi_rts_wq21:35:093
1953992750,274cyclictest30651-21kworker/u16:2+efi_rts_wq23:50:423
1953992690,268cyclictest8129-21kworker/u16:3+efi_rts_wq22:20:103
1953992690,268cyclictest30651-21kworker/u16:2+efi_rts_wq00:35:103
1953992690,268cyclictest1555-21kworker/u16:1+efi_rts_wq20:25:113
1951992680,267cyclictest18365-21kworker/u16:1+efi_rts_wq00:20:471
1953992660,265cyclictest25195-21kworker/u16:0+efi_rts_wq20:35:113
1953992640,263cyclictest3687-21kworker/u16:0+efi_rts_wq23:45:103
1950992640,263cyclictest19743-21kworker/u16:2+efi_rts_wq19:54:570
1953992620,261cyclictest1670-21kworker/u16:1+efi_rts_wq19:15:013
1952992610,260cyclictest19743-21kworker/u16:2+efi_rts_wq19:34:542
1951992590,258cyclictest18365-21kworker/u16:1+efi_rts_wq00:10:101
1951992590,258cyclictest18365-21kworker/u16:1+efi_rts_wq00:10:101
1950992580,257cyclictest791-21kworker/u16:1+efi_rts_wq23:20:100
1951992570,254cyclictest16711-21kworker/u16:1+efi_rts_wq22:00:101
1950992570,255cyclictest3687-21kworker/u16:0+efi_rts_wq23:15:120
1952992560,253cyclictest19743-21kworker/u16:2+efi_rts_wq20:00:102
1951992560,255cyclictest16711-21kworker/u16:1+efi_rts_wq21:50:111
1950992550,254cyclictest3687-21kworker/u16:0+efi_rts_wq23:30:100
1951992540,253cyclictest19743-21kworker/u16:2+efi_rts_wq19:35:101
1950992530,252cyclictest3687-21kworker/u16:0+efi_rts_wq23:35:110
1951992520,251cyclictest31788-21kworker/u16:2+efi_rts_wq21:00:111
1951992520,251cyclictest25195-21kworker/u16:0+efi_rts_wq20:10:001
1950992510,250cyclictest8494-21kworker/u16:0+efi_rts_wq19:39:550
1953992500,249cyclictest31788-21kworker/u16:2+efi_rts_wq21:15:133
1952992480,247cyclictest30651-21kworker/u16:2+efi_rts_wq00:20:122
1953992460,245cyclictest8129-21kworker/u16:3+efi_rts_wq22:55:113
1952992460,245cyclictest19743-21kworker/u16:2+efi_rts_wq19:55:102
1953992420,240cyclictest30651-21kworker/u16:2+efi_rts_wq23:05:353
1950992400,239cyclictest4036-21kworker/u16:2+efi_rts_wq21:50:210
1952992380,235cyclictest19743-21kworker/u16:2+efi_rts_wq19:40:102
1950992380,237cyclictest16711-21kworker/u16:1+efi_rts_wq22:00:230
1950992380,237cyclictest13630-21kworker/u16:0+efi_rts_wq21:25:160
1953992370,236cyclictest31788-21kworker/u16:2+efi_rts_wq21:20:123
1952992330,232cyclictest11238-21kworker/u16:1+efi_rts_wq20:50:092
1951992320,231cyclictest30651-21kworker/u16:2+efi_rts_wq23:25:111
1953992300,229cyclictest13630-21kworker/u16:0+efi_rts_wq21:10:123
1951992280,227cyclictest8129-21kworker/u16:3+efi_rts_wq00:05:111
1953992270,226cyclictest28117-21kworker/u16:0+efi_rts_wq22:50:103
1950992270,226cyclictest1555-21kworker/u16:1+efi_rts_wq20:25:110
1952992260,225cyclictest791-21kworker/u16:1+efi_rts_wq23:20:382
1953992250,224cyclictest19743-21kworker/u16:2+efi_rts_wq19:40:103
1951992240,223cyclictest8129-21kworker/u16:3+efi_rts_wq22:40:101
1950992220,221cyclictest8129-21kworker/u16:3+efi_rts_wq22:25:100
1952992180,217cyclictest8129-21kworker/u16:3+efi_rts_wq23:10:102
1951992160,215cyclictest8496-21kworker/u16:4+efi_rts_wq19:50:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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