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2026-08-28 - 17:01

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 Aug 28, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10522334313,4sleep10-21swapper/107:07:111
9662333311,5sleep00-21swapper/007:06:050
9592319304,5sleep30-21swapper/307:06:013
10642314308,4sleep20-21swapper/207:07:202
1538993010,299cyclictest20547-21kworker/u16:1+efi_rts_wq10:32:472
1536993000,298cyclictest32694-21kworker/u16:3+efi_rts_wq12:35:110
1536993000,297cyclictest20547-21kworker/u16:1+efi_rts_wq09:40:110
1537992980,297cyclictest12582-21kworker/u16:0+efi_rts_wq08:05:131
1536992970,294cyclictest12582-21kworker/u16:0+efi_rts_wq10:57:510
1537992960,295cyclictest17036-21kworker/u16:1+efi_rts_wq11:35:131
1537992950,294cyclictest32694-21kworker/u16:3+efi_rts_wq12:15:131
1536992940,293cyclictest12582-21kworker/u16:0+efi_rts_wq09:10:130
1539992930,292cyclictest12582-21kworker/u16:0+efi_rts_wq09:20:113
1539992930,291cyclictest20547-21kworker/u16:1+efi_rts_wq09:25:123
1539992920,291cyclictest12582-21kworker/u16:0+efi_rts_wq08:40:123
1539992920,291cyclictest12582-21kworker/u16:0+efi_rts_wq07:25:133
1536992920,291cyclictest20547-21kworker/u16:1+efi_rts_wq07:30:130
1538992900,289cyclictest12582-21kworker/u16:0+efi_rts_wq07:35:132
1539992890,288cyclictest32694-21kworker/u16:3+efi_rts_wq12:05:123
1537992890,288cyclictest20547-21kworker/u16:1+efi_rts_wq10:15:151
1537992890,288cyclictest17036-21kworker/u16:1+efi_rts_wq11:50:161
1537992880,287cyclictest12582-21kworker/u16:0+efi_rts_wq07:45:131
1538992860,282cyclictest32694-21kworker/u16:3+efi_rts_wq12:05:112
1536992860,285cyclictest20547-21kworker/u16:1+efi_rts_wq08:22:210
1537992840,283cyclictest20547-21kworker/u16:1+efi_rts_wq08:30:111
1536992820,281cyclictest12582-21kworker/u16:0+efi_rts_wq07:27:110
1537992810,280cyclictest32694-21kworker/u16:3+efi_rts_wq12:08:031
1538992790,278cyclictest20547-21kworker/u16:1+efi_rts_wq09:00:132
1539992770,274cyclictest12582-21kworker/u16:0+efi_rts_wq11:00:123
1538992770,276cyclictest12582-21kworker/u16:0+efi_rts_wq10:55:112
1536992770,276cyclictest20547-21kworker/u16:1+efi_rts_wq09:50:110
1536992770,276cyclictest20547-21kworker/u16:1+efi_rts_wq08:10:120
1539992760,275cyclictest12582-21kworker/u16:0+efi_rts_wq07:40:113
1537992760,275cyclictest26225-21kworker/u16:0+efi_rts_wq12:33:091
1539992750,274cyclictest12582-21kworker/u16:0+efi_rts_wq10:20:123
1538992750,274cyclictest32694-21kworker/u16:3+efi_rts_wq12:00:132
1539992740,273cyclictest32694-21kworker/u16:3+efi_rts_wq11:22:573
1537992740,273cyclictest20547-21kworker/u16:1+efi_rts_wq08:20:121
1536992740,273cyclictest20547-21kworker/u16:1+efi_rts_wq07:10:110
1539992720,269cyclictest20547-21kworker/u16:1+efi_rts_wq08:45:133
1538992720,271cyclictest20547-21kworker/u16:1+efi_rts_wq09:32:342
1536992710,270cyclictest20547-21kworker/u16:1+efi_rts_wq08:00:130
1539992700,269cyclictest32694-21kworker/u16:3+efi_rts_wq11:53:023
1538992700,269cyclictest12582-21kworker/u16:0+efi_rts_wq09:07:302
1537992700,269cyclictest12582-21kworker/u16:0+efi_rts_wq10:45:121
1537992690,268cyclictest20547-21kworker/u16:1+efi_rts_wq09:50:111
1537992690,268cyclictest12582-21kworker/u16:0+efi_rts_wq09:35:101
1536992690,267cyclictest12582-21kworker/u16:0+efi_rts_wq10:52:510
1539992680,267cyclictest20547-21kworker/u16:1+efi_rts_wq08:00:113
1539992680,267cyclictest17036-21kworker/u16:1+efi_rts_wq11:38:003
1539992670,266cyclictest20547-21kworker/u16:1+efi_rts_wq07:20:123
1536992670,266cyclictest12582-21kworker/u16:0+efi_rts_wq11:20:120
1538992660,265cyclictest12582-21kworker/u16:0+efi_rts_wq07:25:132
1537992660,264cyclictest12582-21kworker/u16:0+efi_rts_wq10:35:111
1536992650,264cyclictest12582-21kworker/u16:0+efi_rts_wq07:15:120
1538992630,262cyclictest20547-21kworker/u16:1+efi_rts_wq09:17:332
1536992600,259cyclictest20547-21kworker/u16:1+efi_rts_wq07:55:110
1537992580,257cyclictest26225-21kworker/u16:0+efi_rts_wq12:13:051
1538992570,256cyclictest12582-21kworker/u16:0+efi_rts_wq07:40:112
1536992570,256cyclictest20547-21kworker/u16:1+efi_rts_wq08:25:140
1536992570,255cyclictest32694-21kworker/u16:3+efi_rts_wq11:55:120
1538992560,254cyclictest20547-21kworker/u16:1+efi_rts_wq07:50:112
1539992550,254cyclictest20547-21kworker/u16:1+efi_rts_wq10:15:153
1536992540,253cyclictest20547-21kworker/u16:1+efi_rts_wq07:22:110
1536992540,253cyclictest12582-21kworker/u16:0+efi_rts_wq09:22:340
1537992530,252cyclictest12582-21kworker/u16:0+efi_rts_wq10:05:131
1539992510,250cyclictest20547-21kworker/u16:1+efi_rts_wq10:25:133
1539992510,250cyclictest20547-21kworker/u16:1+efi_rts_wq10:25:123
1536992510,250cyclictest12582-21kworker/u16:0+efi_rts_wq09:55:130
1536992490,248cyclictest26225-21kworker/u16:0+efi_rts_wq12:10:120
1536992490,248cyclictest20547-21kworker/u16:1+efi_rts_wq09:15:120
1536992480,247cyclictest12582-21kworker/u16:0+efi_rts_wq08:15:130
1538992470,246cyclictest32694-21kworker/u16:3+efi_rts_wq12:30:122
1537992470,246cyclictest12582-21kworker/u16:0+efi_rts_wq09:20:111
1539992460,245cyclictest20547-21kworker/u16:1+efi_rts_wq08:25:143
1538992450,244cyclictest20547-21kworker/u16:1+efi_rts_wq09:52:382
1537992450,244cyclictest12582-21kworker/u16:0+efi_rts_wq10:20:121
1536992450,244cyclictest20547-21kworker/u16:1+efi_rts_wq10:30:110
1537992410,240cyclictest20547-21kworker/u16:1+efi_rts_wq10:25:131
1537992410,240cyclictest20547-21kworker/u16:1+efi_rts_wq10:25:121
1536992410,240cyclictest12582-21kworker/u16:0+efi_rts_wq07:47:150
1537992400,239cyclictest20547-21kworker/u16:1+efi_rts_wq10:40:131
1538992390,238cyclictest20547-21kworker/u16:1+efi_rts_wq07:55:122
1538992390,238cyclictest12582-21kworker/u16:0+efi_rts_wq11:05:132
1537992390,238cyclictest20547-21kworker/u16:1+efi_rts_wq10:30:121
1537992370,236cyclictest17036-21kworker/u16:1+efi_rts_wq11:43:011
1536992370,236cyclictest32694-21kworker/u16:3+efi_rts_wq11:15:130
1539992350,234cyclictest12582-21kworker/u16:0+efi_rts_wq08:52:263
1539992340,233cyclictest20547-21kworker/u16:1+efi_rts_wq10:40:133
1537992330,232cyclictest20547-21kworker/u16:1+efi_rts_wq09:42:361
1537992320,231cyclictest17036-21kworker/u16:1+efi_rts_wq11:48:001
1539992290,228cyclictest17036-21kworker/u16:1+efi_rts_wq11:40:123
1537992290,228cyclictest20547-21kworker/u16:1+efi_rts_wq10:12:421
1539992250,224cyclictest12582-21kworker/u16:0+efi_rts_wq10:07:423
1536992250,224cyclictest20547-21kworker/u16:1+efi_rts_wq08:45:130
1536992250,224cyclictest20547-21kworker/u16:1+efi_rts_wq08:35:130
1539992240,221cyclictest32694-21kworker/u16:3+efi_rts_wq11:05:123
1537992230,222cyclictest32694-21kworker/u16:3+efi_rts_wq11:25:111
1537992230,222cyclictest20547-21kworker/u16:1+efi_rts_wq08:47:261
1536992230,222cyclictest20547-21kworker/u16:1+efi_rts_wq09:27:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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