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2024-04-29 - 21:34

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 Mon Apr 29, 2024 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501760,0irq/46-4a1000001105-21kworker/0:207:06:140
81950940,0irq/47-4a10000024627-21ssh10:33:200
81950920,0irq/47-4a1000008918-21rm12:22:120
81950920,0irq/47-4a10000020968-21latency_hist09:05:020
81950920,0irq/47-4a10000015091-21ssh11:25:250
81950910,0irq/47-4a10000011863-21ssh10:02:450
81950900,0irq/47-4a10000028648-21ssh11:54:500
81950900,0irq/47-4a10000027417-21kworker/u2:410:54:490
81950900,0irq/47-4a1000002273-21ssh09:39:380
81950890,0irq/47-4a1000006851-21snmpd11:10:120
81950890,0irq/47-4a10000022166-21ssh11:40:430
81950890,0irq/47-4a10000011790-21idleruntime-cro08:05:010
81950880,0irq/47-4a1000006672-1kworker/u3:511:09:190
81950880,0irq/47-4a1000005542-21latency_hist12:15:060
81950880,0irq/47-4a10000031136-21rm09:30:550
81950880,0irq/47-4a10000030356-21rm11:58:210
81950880,0irq/47-4a10000019082-21munin-run10:20:010
81950880,0irq/47-4a10000015414-21kworker/u2:012:39:200
81950880,0irq/47-4a10000014039-21rm11:23:140
81950870,0irq/47-4a100000539-21ssh12:04:100
81950870,0irq/47-4a1000003657-21sh11:00:050
81950870,0irq/47-4a10000029458-21kworker/u2:512:06:130
81950870,0irq/47-4a10000028411-21apt09:25:000
81950870,0irq/47-4a10000027436-21apt10:40:020
81950870,0irq/47-4a10000024890-21ssh11:46:410
81950870,0irq/47-4a10000021823-21rm10:26:290
81950870,0irq/47-4a10000017029-21sendmail-msp08:40:020
81950870,0irq/47-4a10000016982-21munin-run10:15:030
81950870,0irq/47-4a10000013720-21sshd08:17:510
81950870,0irq/47-4a10000012490-21cron12:30:060
81850870,0irq/46-4a1000008022-21modprobe07:40:010
81950860,0irq/47-4a1000006851-21snmpd09:54:440
81950860,0irq/47-4a1000006282-21kworker/u2:711:16:460
81950860,0irq/47-4a1000004374-21ssh09:44:460
81950860,0irq/47-4a1000003996-21chown07:15:040
81950860,0irq/47-4a10000028115-21ssh10:41:270
81950860,0irq/47-4a10000021681-21diskmemload12:10:370
81950860,0irq/47-4a10000011199-21kworker/u2:512:30:030
81950850,0irq/47-4a1000006851-21snmpd07:29:060
81950850,0irq/47-4a1000004829-21sh09:45:390
81950850,0irq/47-4a1000004124-21cpu07:15:090
81950850,0irq/47-4a10000031487-21ssh10:49:290
81950850,0irq/47-4a10000026208-21run-parts09:20:010
81950850,0irq/47-4a10000023813-21kworker/u2:110:55:260
81950850,0irq/47-4a10000022993-21ssh09:12:440
81950850,0irq/47-4a10000019439-21ssh10:20:400
81950850,0irq/47-4a10000013794-21ssh10:07:270
81950850,0irq/47-4a10000010181-21ssh09:58:520
81950840,0irq/47-4a1000006851-21snmpd08:24:190
81950840,0irq/47-4a10000029287-21kworker/u2:009:27:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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