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2025-07-19 - 06:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #2

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot2s.osadl.org (updated Sat Jul 19, 2025 00:48:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276346799296221,60cyclictest0-21swapper/022:36:190
276346799296221,60cyclictest0-21swapper/022:36:180
276346799294194,87cyclictest2768986-21ntpq19:41:420
276346799284145,125cyclictest0-21swapper/021:47:050
276346799283212,57cyclictest0-21swapper/023:09:590
276346799283151,115cyclictest2770938-21kworker/u10:2-writeback20:32:170
276346799283151,115cyclictest2770938-21kworker/u10:2-writeback20:32:170
276346799282157,109cyclictest2796670-21rm22:10:410
276346799282154,110cyclictest2819302-21sh23:56:020
276346799278171,95cyclictest2828076-21processes00:37:010
276346799278171,95cyclictest2828076-21processes00:37:010
276346799278160,101cyclictest2787247-21ssh21:26:250
276346799278160,101cyclictest2787247-21ssh21:26:240
276346799277157,97cyclictest2790945-21kworker/u9:3+rpciod22:26:540
276346799277153,108cyclictest0-21swapper/000:05:580
27634679927399,130cyclictest0-21swapper/021:40:310
27634679927399,130cyclictest0-21swapper/021:40:310
276346799273165,93cyclictest0-21swapper/022:15:480
276346799273157,98cyclictest0-21swapper/020:06:220
276346799273151,102cyclictest2773062-21kworker/u9:9+rpciod20:26:510
276346799273151,102cyclictest2773062-21kworker/u9:9+rpciod20:26:510
276346799271143,110cyclictest0-21swapper/022:51:160
276346799271143,110cyclictest0-21swapper/022:51:160
276346799270132,121cyclictest0-21swapper/023:15:420
276346799270132,121cyclictest0-21swapper/023:15:410
276346799268174,61cyclictest171rcu_preempt23:30:130
276346799268174,61cyclictest171rcu_preempt23:30:120
276346799268155,97cyclictest2820543-21gcc00:01:530
276346799268155,97cyclictest2820543-21gcc00:01:520
276346799268151,66cyclictest2818192-21memory23:50:530
276346799268151,66cyclictest2818192-21memory23:50:520
276346799267183,53cyclictest171rcu_preempt20:55:060
276346799267183,53cyclictest171rcu_preempt20:55:060
276346799267181,57cyclictest171rcu_preempt19:26:490
276346799267181,57cyclictest171rcu_preempt19:26:490
276346799267164,90cyclictest0-21swapper/020:10:540
276346799267164,90cyclictest0-21swapper/020:10:540
276346799267154,98cyclictest200-21systemd-resolve21:12:550
276346799266156,88cyclictest2810167-21kworker/u9:4+xprtiod23:46:030
276346799265157,90cyclictest0-21swapper/021:36:180
276346799265150,100cyclictest0-21swapper/019:17:000
276346799265150,100cyclictest0-21swapper/019:17:000
276346799264153,95cyclictest0-21swapper/023:20:270
276346799262158,87cyclictest0-21swapper/023:36:250
276346799262158,87cyclictest0-21swapper/023:36:250
276346799262153,90cyclictest2762020-21kworker/u10:1-rpciod19:45:110
276346799262153,90cyclictest2762020-21kworker/u10:1-rpciod19:45:110
276346799262150,97cyclictest0-21swapper/000:11:450
276346799262150,95cyclictest9150irq/87-eth%d23:01:560
276346799261139,100cyclictest0-21swapper/023:40:570
276346799261139,100cyclictest0-21swapper/023:40:570
276346799260174,56cyclictest171rcu_preempt00:21:460
276346799260174,56cyclictest171rcu_preempt00:21:450
276346799260170,75cyclictest0-21swapper/022:06:260
276346799259159,87cyclictest0-21swapper/022:00:570
276346799259154,90cyclictest2799058-21ntp_offset22:21:280
276346799259154,90cyclictest2799058-21ntp_offset22:21:280
276346799258148,94cyclictest0-21swapper/022:40:410
276346799258145,96cyclictest0-21swapper/020:55:550
276346799258145,96cyclictest0-21swapper/020:55:550
276346799258142,100cyclictest0-21swapper/020:36:380
276346799258112,129cyclictest2772319-21ntpq20:01:440
276346799257162,62cyclictest171rcu_preempt21:05:060
276346799257152,94cyclictest0-21swapper/022:30:320
276346799257143,103cyclictest0-21swapper/020:15:530
276346799257141,98cyclictest9150irq/87-eth%d21:51:540
276346799256165,60cyclictest171rcu_preempt19:15:040
276346799256165,60cyclictest171rcu_preempt19:15:030
276346799256147,95cyclictest2786396-21ssh21:22:040
276346799256147,95cyclictest2786396-21ssh21:22:040
276346799256147,91cyclictest0-21swapper/021:56:140
276346799256147,91cyclictest0-21swapper/021:56:140
276346799255188,57cyclictest0-21swapper/021:07:250
276346799255145,92cyclictest0-21swapper/021:15:540
276346799255145,92cyclictest0-21swapper/021:15:540
276346799255143,96cyclictest0-21swapper/000:25:350
276346799255104,112cyclictest2823697-21ssh00:16:430
276346799255104,112cyclictest2823697-21ssh00:16:430
276346799254170,55cyclictest171rcu_preempt19:25:040
276346799254170,55cyclictest171rcu_preempt19:25:030
276346799254164,57cyclictest171rcu_preempt22:57:050
276346799254164,57cyclictest171rcu_preempt22:57:040
276346799254145,92cyclictest0-21swapper/020:46:560
276346799254145,92cyclictest0-21swapper/020:46:560
276346799254141,103cyclictest2763480-21latency_hist19:10:030
276346799254141,103cyclictest2763480-21latency_hist19:10:030
276346799253157,82cyclictest0-21swapper/019:31:260
276346799253157,82cyclictest0-21swapper/019:31:260
276346799253139,96cyclictest0-21swapper/022:50:070
276346799253120,77cyclictest0-21swapper/019:56:140
276346799253109,111cyclictest2826806-21ssh00:31:090
276346799252147,91cyclictest2770607-21ntp_offset19:51:280
276346799252147,91cyclictest2770607-21ntp_offset19:51:280
276346899251161,54cyclictest0-21swapper/121:57:401
276346899251161,54cyclictest0-21swapper/121:57:401
276347099248215,17cyclictest0-21swapper/322:36:183
276347099248215,17cyclictest0-21swapper/322:36:183
276346899248163,48cyclictest0-21swapper/122:23:101
276346899248163,48cyclictest0-21swapper/122:23:091
276346899248159,52cyclictest0-21swapper/100:29:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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