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2025-04-03 - 16:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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 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: 50 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 50 highest latencies:
System rack9slot8s.osadl.org (updated Thu Apr 03, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501670,0irq/46-4a10000023828-21runrttasks07:05:240
2380929518,0sleep023813-21ssh09:47:320
81950840,0irq/47-4a10000018945-21ssh12:25:500
81950840,0irq/47-4a10000016210-21kworker/u2:009:29:490
81950830,0irq/47-4a10000016420-21ssh10:54:010
81950820,0irq/47-4a1000003133-21ssh10:19:240
81950820,0irq/47-4a10000022463-21mktemp12:35:090
81950820,0irq/47-4a10000011771-21ssh09:14:140
81950810,0irq/47-4a10000025199-21ssh09:51:020
81950810,0irq/47-4a10000016720-21munin-run12:20:030
81850810,0irq/46-4a10000023335-21rm11:12:150
81850810,0irq/46-4a100000178552chrt12:23:110
81950800,0irq/47-4a10000030615-21kworker/u2:311:45:050
81950800,0irq/47-4a10000027136-21ssh11:22:310
81950800,0irq/47-4a10000020467-21ssh09:38:200
81950800,0irq/47-4a10000012989-21ssh12:10:240
81850800,0irq/46-4a10000015608-21idleruntime-cro09:25:010
81850800,0irq/46-4a10000013455-21rm09:19:120
81850800,0irq/46-4a10000010259-21diskmemload12:04:430
70242800,0chrt30850-21kworker/u2:010:29:310
289712800,0chrt28924-21kworker/u2:510:01:380
14582808,0sleep01478-21ssh10:15:010
81950790,0irq/47-4a1000005769-21sshd08:39:370
81950790,0irq/47-4a1000005186-21ssh10:24:450
81950790,0irq/47-4a1000004188-21apt08:30:010
81950790,0irq/47-4a10000030854-21ssh11:32:220
81950790,0irq/47-4a10000029385-21rm11:28:310
81950790,0irq/47-4a10000018815-21ssh09:34:040
81950790,0irq/47-4a10000018678-21rm10:59:530
81950790,0irq/47-4a10000012253-21ssh12:08:450
81950790,0irq/47-4a10000011628-21ssh10:41:000
81950790,0irq/47-4a10000010546-21ssh10:38:250
81850790,0irq/46-4a10000032750-21ssh11:37:340
81950780,0irq/47-4a1000008387-21ssh10:32:420
81950780,0irq/47-4a1000006281-21ssh11:53:300
81950780,0irq/47-4a10000020761-21ssh11:05:160
81950780,0irq/47-4a10000016696-21kworker/u2:512:32:220
81950780,0irq/47-4a10000010259-21diskmemload10:06:320
81850780,0irq/46-4a10000025195-21chrt11:17:150
81850780,0irq/46-4a10000010259-21diskmemload11:41:540
275232780,0chrt26662-21kworker/u2:207:27:540
81950770,0irq/47-4a1000006000-21runrttasks08:40:170
81950770,0irq/47-4a10000027237-21ssh09:56:530
81950770,0irq/47-4a10000015595-21kworker/u2:211:03:130
81950770,0irq/47-4a10000013700-21ssh10:46:380
81850770,0irq/46-4a10000010259-21diskmemload11:58:080
76282770,0sleep06169-21kworker/u2:108:51:430
216352770,0sleep018037-21kworker/u2:209:41:260
100762770,0chrt8764-21kworker/u2:109:08:400
81950760,0irq/47-4a10000032449-21runrttasks08:01:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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