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2026-05-02 - 02:03

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 May 01, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267922329302,25sleep10-21swapper/107:06:481
270292319305,5sleep30-21swapper/307:09:503
268072319305,5sleep20-21swapper/207:06:572
269172315308,5sleep00-21swapper/007:08:230
27310993010,300cyclictest12741-21kworker/u16:0+efi_rts_wq09:20:113
27305993000,299cyclictest21141-21kworker/u16:3+efi_rts_wq11:50:120
27310992980,297cyclictest23496-21kworker/u16:2+efi_rts_wq12:05:133
27309992980,297cyclictest5297-21kworker/u16:1+efi_rts_wq10:30:102
27305992980,297cyclictest23496-21kworker/u16:2+efi_rts_wq12:05:120
27309992970,296cyclictest26701-21kworker/u16:1+efi_rts_wq11:40:122
27305992960,294cyclictest19042-21kworker/u16:3+efi_rts_wq11:05:120
27305992950,294cyclictest7283-21kworker/u16:2+efi_rts_wq11:35:110
27310992940,293cyclictest12741-21kworker/u16:0+efi_rts_wq09:45:133
27309992930,292cyclictest5297-21kworker/u16:1+efi_rts_wq08:25:122
27308992920,291cyclictest5297-21kworker/u16:1+efi_rts_wq10:10:111
27308992920,291cyclictest5297-21kworker/u16:1+efi_rts_wq08:37:131
27309992910,290cyclictest25806-21kworker/u16:0+efi_rts_wq12:15:112
27309992910,290cyclictest12741-21kworker/u16:0+efi_rts_wq09:40:122
27308992910,290cyclictest5297-21kworker/u16:1+efi_rts_wq09:00:131
27305992900,289cyclictest12741-21kworker/u16:0+efi_rts_wq07:20:110
27305992890,288cyclictest5297-21kworker/u16:1+efi_rts_wq07:40:120
27305992890,288cyclictest12741-21kworker/u16:0+efi_rts_wq09:02:170
27305992880,287cyclictest7283-21kworker/u16:2+efi_rts_wq11:27:460
27309992870,286cyclictest5297-21kworker/u16:1+efi_rts_wq10:10:122
27310992850,284cyclictest26701-21kworker/u16:1+efi_rts_wq11:25:113
27305992850,284cyclictest12741-21kworker/u16:0+efi_rts_wq08:15:130
27310992840,283cyclictest5297-21kworker/u16:1+efi_rts_wq08:17:093
27309992840,283cyclictest5297-21kworker/u16:1+efi_rts_wq07:47:032
27309992830,282cyclictest12741-21kworker/u16:0+efi_rts_wq07:35:102
27308992830,282cyclictest23496-21kworker/u16:2+efi_rts_wq12:35:111
27305992830,282cyclictest5297-21kworker/u16:1+efi_rts_wq07:10:130
27310992820,281cyclictest26701-21kworker/u16:1+efi_rts_wq10:57:403
27309992820,281cyclictest5297-21kworker/u16:1+efi_rts_wq09:05:142
27310992810,279cyclictest5297-21kworker/u16:1+efi_rts_wq07:25:123
27308992810,280cyclictest12741-21kworker/u16:0+efi_rts_wq07:35:111
27305992810,280cyclictest12741-21kworker/u16:0+efi_rts_wq08:05:130
27310992790,278cyclictest19042-21kworker/u16:3+efi_rts_wq10:47:383
27308992770,276cyclictest5297-21kworker/u16:1+efi_rts_wq10:45:121
27309992760,275cyclictest12741-21kworker/u16:0+efi_rts_wq09:15:122
27308992760,275cyclictest12741-21kworker/u16:0+efi_rts_wq10:20:121
27309992740,273cyclictest5297-21kworker/u16:1+efi_rts_wq08:20:122
27305992730,272cyclictest23496-21kworker/u16:2+efi_rts_wq12:17:530
27305992730,272cyclictest12741-21kworker/u16:0+efi_rts_wq08:30:110
27305992700,269cyclictest12741-21kworker/u16:0+efi_rts_wq07:37:020
27310992680,267cyclictest26701-21kworker/u16:1+efi_rts_wq11:45:143
27310992660,265cyclictest5297-21kworker/u16:1+efi_rts_wq07:55:113
27308992660,265cyclictest23496-21kworker/u16:2+efi_rts_wq12:20:121
27309992650,264cyclictest19042-21kworker/u16:3+efi_rts_wq11:05:122
27305992640,263cyclictest5297-21kworker/u16:1+efi_rts_wq07:25:130
27309992610,260cyclictest12741-21kworker/u16:0+efi_rts_wq08:10:132
27305992600,259cyclictest5297-21kworker/u16:1+efi_rts_wq09:47:260
27308992570,256cyclictest26701-21kworker/u16:1+efi_rts_wq11:57:501
27305992570,256cyclictest5297-21kworker/u16:1+efi_rts_wq10:02:290
27308992560,254cyclictest12741-21kworker/u16:0+efi_rts_wq10:35:111
27310992550,254cyclictest5297-21kworker/u16:1+efi_rts_wq08:42:143
27305992540,253cyclictest26701-21kworker/u16:1+efi_rts_wq11:30:090
27310992530,252cyclictest12741-21kworker/u16:0+efi_rts_wq07:15:143
27308992530,252cyclictest12741-21kworker/u16:0+efi_rts_wq08:50:121
27310992510,250cyclictest25806-21kworker/u16:0+efi_rts_wq12:10:123
27305992510,250cyclictest26701-21kworker/u16:1+efi_rts_wq11:47:490
27309992500,249cyclictest12741-21kworker/u16:0+efi_rts_wq09:35:122
27305992480,247cyclictest12741-21kworker/u16:0+efi_rts_wq08:40:120
27309992450,244cyclictest12741-21kworker/u16:0+efi_rts_wq09:45:142
27308992450,244cyclictest5297-21kworker/u16:1+efi_rts_wq07:21:591
27308992450,244cyclictest19042-21kworker/u16:3+efi_rts_wq11:20:121
27310992430,242cyclictest5297-21kworker/u16:1+efi_rts_wq08:55:123
27310992420,241cyclictest5297-21kworker/u16:1+efi_rts_wq09:50:103
27309992420,241cyclictest23496-21kworker/u16:2+efi_rts_wq12:35:112
27309992420,241cyclictest12741-21kworker/u16:0+efi_rts_wq10:25:122
27309992420,241cyclictest12741-21kworker/u16:0+efi_rts_wq07:15:002
27310992400,239cyclictest12741-21kworker/u16:0+efi_rts_wq09:30:123
27310992400,238cyclictest26701-21kworker/u16:1+efi_rts_wq11:00:133
27309992390,238cyclictest24136-21kworker/u16:0+efi_rts_wq10:55:112
27310992380,237cyclictest5297-21kworker/u16:1+efi_rts_wq08:45:133
27310992380,237cyclictest23496-21kworker/u16:2+efi_rts_wq12:00:123
27305992380,237cyclictest5297-21kworker/u16:1+efi_rts_wq09:55:110
27309992370,235cyclictest26701-21kworker/u16:1+efi_rts_wq11:30:102
27308992360,235cyclictest5297-21kworker/u16:1+efi_rts_wq09:05:131
27305992350,234cyclictest5297-21kworker/u16:1+efi_rts_wq08:35:130
27309992340,233cyclictest5297-21kworker/u16:1+efi_rts_wq09:22:212
27309992340,233cyclictest12741-21kworker/u16:0+efi_rts_wq08:47:152
27309992330,232cyclictest26701-21kworker/u16:1+efi_rts_wq11:00:132
27308992330,232cyclictest23496-21kworker/u16:2+efi_rts_wq12:30:111
27310992310,230cyclictest25806-21kworker/u16:0+efi_rts_wq12:25:123
27310992310,229cyclictest26701-21kworker/u16:1+efi_rts_wq11:10:113
27310992310,229cyclictest24136-21kworker/u16:0+efi_rts_wq10:50:103
27308992300,229cyclictest25806-21kworker/u16:0+efi_rts_wq12:12:531
27309992290,227cyclictest7283-21kworker/u16:2+efi_rts_wq11:35:112
27305992280,227cyclictest25806-21kworker/u16:0+efi_rts_wq12:27:560
27309992270,226cyclictest19042-21kworker/u16:3+efi_rts_wq11:20:122
27308992250,224cyclictest12741-21kworker/u16:0+efi_rts_wq10:40:111
27308992210,220cyclictest26701-21kworker/u16:1+efi_rts_wq11:40:121
27309992200,219cyclictest12741-21kworker/u16:0+efi_rts_wq09:27:222
27309992190,218cyclictest12741-21kworker/u16:0+efi_rts_wq08:15:132
27309992180,217cyclictest5297-21kworker/u16:1+efi_rts_wq07:50:122
27309992180,217cyclictest12741-21kworker/u16:0+efi_rts_wq10:07:302
27308992180,217cyclictest12741-21kworker/u16:0+efi_rts_wq07:15:131
27309992170,216cyclictest5297-21kworker/u16:1+efi_rts_wq07:40:112
27309992160,215cyclictest12741-21kworker/u16:0+efi_rts_wq10:40:112
27310992150,214cyclictest12741-21kworker/u16:0+efi_rts_wq10:27:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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