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2026-04-07 - 14:55

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 Apr 07, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66892329323,4sleep30-21swapper/319:06:503
68392318305,4sleep20-21swapper/219:08:472
67012318311,4sleep00-21swapper/019:06:590
67912317309,5sleep10-21swapper/119:08:081
7248993150,314cyclictest10337-21kworker/u16:3+efi_rts_wq21:04:520
7253993140,313cyclictest27439-21kworker/u16:2+efi_rts_wq19:55:121
7260993130,312cyclictest18710-21kworker/u16:1+efi_rts_wq22:35:142
7248993120,311cyclictest18710-21kworker/u16:1+efi_rts_wq21:55:010
7267993110,310cyclictest18710-21kworker/u16:1+efi_rts_wq22:05:143
7267993110,310cyclictest18710-21kworker/u16:1+efi_rts_wq19:35:143
7267993100,309cyclictest13115-21kworker/u16:3+efi_rts_wq00:10:133
7260993100,309cyclictest27439-21kworker/u16:2+efi_rts_wq19:10:112
7253993100,309cyclictest18710-21kworker/u16:1+efi_rts_wq22:05:041
7248993100,309cyclictest8990-21kworker/u16:2+efi_rts_wq22:45:130
7248993100,309cyclictest8990-21kworker/u16:2+efi_rts_wq22:45:130
7253993090,308cyclictest10337-21kworker/u16:3+efi_rts_wq22:25:061
7248993090,307cyclictest18710-21kworker/u16:1+efi_rts_wq22:30:130
7260993080,307cyclictest18710-21kworker/u16:1+efi_rts_wq21:09:532
7260993070,306cyclictest22116-21kworker/u16:1+efi_rts_wq23:40:122
7248993070,306cyclictest27439-21kworker/u16:2+efi_rts_wq20:20:140
7260993060,305cyclictest8990-21kworker/u16:2+efi_rts_wq22:55:122
7260993060,305cyclictest27439-21kworker/u16:2+efi_rts_wq20:20:142
7248993060,305cyclictest10537-21kworker/u16:2+efi_rts_wq00:35:110
7248993060,305cyclictest10337-21kworker/u16:3+efi_rts_wq21:05:130
7267993040,303cyclictest18710-21kworker/u16:1+efi_rts_wq19:20:123
7253993030,302cyclictest10337-21kworker/u16:3+efi_rts_wq20:50:121
7267993010,300cyclictest18710-21kworker/u16:1+efi_rts_wq19:49:383
7253993000,299cyclictest10337-21kworker/u16:3+efi_rts_wq21:10:121
7248993000,299cyclictest10537-21kworker/u16:2+efi_rts_wq00:00:130
7267992990,298cyclictest22116-21kworker/u16:1+efi_rts_wq23:25:173
7267992980,297cyclictest18710-21kworker/u16:1+efi_rts_wq20:30:113
7253992980,297cyclictest18710-21kworker/u16:1+efi_rts_wq21:00:141
7253992970,296cyclictest8990-21kworker/u16:2+efi_rts_wq22:55:121
7248992970,296cyclictest10337-21kworker/u16:3+efi_rts_wq21:10:120
7267992960,295cyclictest10537-21kworker/u16:2+efi_rts_wq00:00:123
7267992960,294cyclictest25079-21kworker/u16:3+efi_rts_wq23:35:133
7260992960,295cyclictest7978-21kworker/u16:0+efi_rts_wq23:45:112
7248992960,295cyclictest10537-21kworker/u16:2+efi_rts_wq23:50:120
7248992950,294cyclictest18710-21kworker/u16:1+efi_rts_wq20:55:120
7253992940,293cyclictest18710-21kworker/u16:1+efi_rts_wq21:20:151
7267992930,292cyclictest13115-21kworker/u16:3+efi_rts_wq00:20:123
7260992930,292cyclictest25079-21kworker/u16:3+efi_rts_wq23:25:132
7253992930,292cyclictest10337-21kworker/u16:3+efi_rts_wq22:15:041
7267992920,291cyclictest25079-21kworker/u16:3+efi_rts_wq23:20:113
7267992920,291cyclictest10537-21kworker/u16:2+efi_rts_wq00:15:123
7260992920,291cyclictest18710-21kworker/u16:1+efi_rts_wq21:35:092
7260992900,289cyclictest10337-21kworker/u16:3+efi_rts_wq22:10:132
7267992890,288cyclictest7978-21kworker/u16:0+efi_rts_wq23:45:123
7267992860,285cyclictest18710-21kworker/u16:1+efi_rts_wq21:50:133
7267992860,285cyclictest18710-21kworker/u16:1+efi_rts_wq21:35:093
7267992840,283cyclictest27439-21kworker/u16:2+efi_rts_wq19:25:133
7267992840,282cyclictest22116-21kworker/u16:1+efi_rts_wq23:10:143
7267992830,282cyclictest18710-21kworker/u16:1+efi_rts_wq19:30:123
7253992830,282cyclictest27439-21kworker/u16:2+efi_rts_wq19:34:341
7253992830,282cyclictest18710-21kworker/u16:1+efi_rts_wq22:20:141
7248992820,281cyclictest10337-21kworker/u16:3+efi_rts_wq22:50:130
7248992820,281cyclictest10337-21kworker/u16:3+efi_rts_wq21:30:120
7267992810,280cyclictest18710-21kworker/u16:1+efi_rts_wq20:40:113
7253992810,280cyclictest18710-21kworker/u16:1+efi_rts_wq21:15:131
7260992800,279cyclictest27439-21kworker/u16:2+efi_rts_wq19:50:132
7253992780,277cyclictest10337-21kworker/u16:3+efi_rts_wq20:45:131
7253992770,276cyclictest13115-21kworker/u16:3+efi_rts_wq00:30:101
7248992760,275cyclictest10337-21kworker/u16:3+efi_rts_wq20:50:120
7267992750,274cyclictest10337-21kworker/u16:3+efi_rts_wq21:25:133
7260992750,274cyclictest18710-21kworker/u16:1+efi_rts_wq22:25:132
7248992750,274cyclictest18710-21kworker/u16:1+efi_rts_wq22:10:040
7267992740,273cyclictest27439-21kworker/u16:2+efi_rts_wq19:14:303
7267992730,272cyclictest18710-21kworker/u16:1+efi_rts_wq19:54:383
7260992730,271cyclictest13115-21kworker/u16:3+efi_rts_wq23:55:122
7253992730,271cyclictest27439-21kworker/u16:2+efi_rts_wq19:40:121
7267992720,271cyclictest10537-21kworker/u16:2+efi_rts_wq23:55:213
7248992720,271cyclictest18710-21kworker/u16:1+efi_rts_wq22:35:130
7253992690,268cyclictest18710-21kworker/u16:1+efi_rts_wq19:45:121
7253992670,266cyclictest18710-21kworker/u16:1+efi_rts_wq21:40:131
7260992660,265cyclictest18710-21kworker/u16:1+efi_rts_wq21:29:562
7253992620,261cyclictest18710-21kworker/u16:1+efi_rts_wq22:40:081
7260992610,260cyclictest18710-21kworker/u16:1+efi_rts_wq21:45:112
7253992610,259cyclictest18710-21kworker/u16:1+efi_rts_wq19:15:011
7253992580,257cyclictest18710-21kworker/u16:1+efi_rts_wq20:25:121
7267992570,256cyclictest25079-21kworker/u16:3+efi_rts_wq23:30:133
7260992560,255cyclictest25079-21kworker/u16:3+efi_rts_wq23:15:152
7253992550,254cyclictest18710-21kworker/u16:1+efi_rts_wq22:00:131
7248992550,254cyclictest10337-21kworker/u16:3+efi_rts_wq22:40:110
7267992510,250cyclictest10337-21kworker/u16:3+efi_rts_wq21:50:003
7267992490,247cyclictest18710-21kworker/u16:1+efi_rts_wq22:30:133
7253992490,248cyclictest10337-21kworker/u16:3+efi_rts_wq22:30:071
7253992490,248cyclictest10337-21kworker/u16:3+efi_rts_wq20:35:121
7248992460,245cyclictest27439-21kworker/u16:2+efi_rts_wq20:10:130
7267992440,242cyclictest10537-21kworker/u16:2+efi_rts_wq23:50:213
7253992420,241cyclictest18710-21kworker/u16:1+efi_rts_wq20:00:131
7253992420,241cyclictest13115-21kworker/u16:3+efi_rts_wq00:25:121
7260992410,238cyclictest18710-21kworker/u16:1+efi_rts_wq22:20:142
7260992380,237cyclictest25079-21kworker/u16:3+efi_rts_wq23:35:132
7253992370,236cyclictest8990-21kworker/u16:2+efi_rts_wq23:00:131
7267992360,235cyclictest13115-21kworker/u16:3+efi_rts_wq00:30:103
7248992360,235cyclictest27439-21kworker/u16:2+efi_rts_wq19:55:120
7260992350,234cyclictest10537-21kworker/u16:2+efi_rts_wq00:15:132
7253992280,227cyclictest10537-21kworker/u16:2+efi_rts_wq23:50:121
7248992260,225cyclictest18710-21kworker/u16:1+efi_rts_wq20:30:110
7248992250,224cyclictest27439-21kworker/u16:2+efi_rts_wq19:25:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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