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2024-10-03 - 20:00

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 highest latencies:
System rack9slot8s.osadl.org (updated Thu Oct 03, 2024 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501950,0irq/47-4a1000008134-21runrttasks07:06:040
81850900,0irq/46-4a10000032712-21modprobe09:25:030
81950870,0irq/47-4a1000006851-21snmpd09:15:060
81950870,0irq/47-4a10000020237-21kworker/u2:512:15:110
81850870,0irq/46-4a1000008780-21ssh09:48:040
81950860,0irq/47-4a10000026489-21kworker/u2:312:34:410
81950860,0irq/47-4a10000014369-21kworker/u2:111:43:270
81950850,0irq/47-4a1000005333-21ssh09:39:070
81950850,0irq/47-4a10000014221-21ssh10:02:310
81950840,0irq/47-4a1000008297-21kworker/u2:110:10:020
81950840,0irq/47-4a10000022939-21munin-run10:25:020
81950840,0irq/47-4a10000022413-21ssh11:46:360
81950830,0irq/47-4a100000894-21ssh10:51:550
81950830,0irq/47-4a100000790-21kworker/u2:209:59:070
81950830,0irq/47-4a1000004319-21ssh11:00:460
81950830,0irq/47-4a10000027231-21diskmemload12:05:200
81950830,0irq/47-4a10000015354-21ssh11:29:450
81950830,0irq/47-4a10000014369-21kworker/u2:111:32:450
81950830,0irq/47-4a10000012370-21ssh11:22:030
81950830,0irq/47-4a10000011330-21ssh09:55:020
81950820,0irq/47-4a1000008206-21ssh11:11:210
81950820,0irq/47-4a1000006456-21kworker/u2:211:06:590
81950820,0irq/47-4a1000006319-21kworker/u2:012:26:270
81950820,0irq/47-4a1000004057-21kworker/u2:812:21:010
81950820,0irq/47-4a10000028774-21ssh12:02:190
81950820,0irq/47-4a10000027231-21diskmemload10:40:310
81950820,0irq/47-4a10000026300-21ssh11:56:160
81950820,0irq/47-4a10000025474-21ssh10:31:220
81950820,0irq/47-4a10000023618-21kworker/u2:210:29:040
81950820,0irq/47-4a10000022683-21sshd08:39:260
81950820,0irq/47-4a10000010530-21ssh11:17:380
81850820,0irq/46-4a1000006231-21ssh09:41:010
81850820,0irq/46-4a10000027234-21apt09:10:010
324962820,0chrt32357-21kworker/u2:612:11:250
2952028210,0sleep029534-21ssh09:15:210
81950810,0irq/47-4a1000006319-21kworker/u2:012:36:000
81950810,0irq/47-4a1000003943-21awk11:00:020
81950810,0irq/47-4a1000003695-21ssh09:34:380
81950810,0irq/47-4a10000032514-21ssh10:49:550
81950810,0irq/47-4a10000027231-21diskmemload11:35:330
81950810,0irq/47-4a10000025002-21munin-run08:55:020
81850810,0irq/46-4a1000001818-21ssh09:29:100
194502817,0sleep018954-21apt-get10:15:530
81950800,0irq/47-4a10000027582-21ssh10:36:440
81950800,0irq/47-4a10000025356-21ssh11:54:020
81950800,0irq/47-4a10000025294-1kworker/u3:209:00:030
81950800,0irq/47-4a10000017401-21ssh10:10:430
204982790,0sleep020158-21kworker/u2:808:24:290
192442796,0sleep0560-21kswapd008:15:310
81950780,0irq/47-4a1000009955-21sshd07:15:240
81950780,0irq/47-4a1000006851-21snmpd08:04:400
81950780,0irq/47-4a10000013704-21idleruntime-cro07:40:010
81850780,0irq/46-4a1000006851-21snmpd08:34:480
139232780,0chrt12330-21kworker/u2:207:40:440
81950770,0irq/47-4a1000009291-21sshd07:14:230
81950770,0irq/47-4a10000026477-21cron09:05:010
81950760,0irq/47-4a1000008242-21kworker/u2:107:25:020
81950760,0irq/47-4a10000020731-21sshd08:25:240
81950760,0irq/47-4a10000012768-21latency_hist07:35:010
145772760,0sleep014046-21kworker/u2:307:45:060
81950750,0irq/47-4a10000018151-21sh08:10:020
81950750,0irq/47-4a10000017688-1kworker/u3:208:15:000
242132750,0sleep021651-21kworker/u2:108:49:420
115702740,0chrt10051-21kworker/u2:307:26:190
101690,0ktimersoftd/015592-21modprobe07:52:240
101680,0ktimersoftd/023553-21latency_hist08:45:030
101650,0ktimersoftd/016243-21chrt07:56:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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