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2024-09-20 - 00:03

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 792 highest latencies:
System rack9slot8s.osadl.org (updated Thu Sep 19, 2024 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501680,0irq/47-4a10000020126-21sendmail-mta07:08:040
81950750,0irq/47-4a10000019103-21kworker/u2:110:24:110
1102127311,0sleep011026-21ssh10:53:510
81950710,0irq/47-4a1000006970-21ssh10:42:250
81950690,0irq/47-4a10000015244-21ssh09:35:540
81950660,0irq/47-4a10000010732-21ssh12:16:560
81950650,0irq/47-4a1000008834-21kworker/u2:009:25:480
256952656,0sleep025702-21ssh10:04:210
56232644,0sleep00-21swapper10:38:490
81950630,0irq/47-4a1000008773-21ssh12:12:240
81950630,0irq/47-4a1000006371-21diskmemload12:07:090
81950630,0irq/47-4a10000019672-21ssh11:17:400
81950630,0irq/47-4a10000018607-21ssh12:35:110
81850630,0irq/46-4a1000000-21swapper11:51:300
81850630,0irq/46-4a1000000-21swapper11:43:500
81850630,0irq/46-4a1000000-21swapper11:35:570
81850630,0irq/46-4a1000000-21swapper09:23:220
20415996345,0cyclictest81850irq/46-4a10000009:11:190
81950620,0irq/47-4a10000016700-21kworker/u2:209:46:060
81950620,0irq/47-4a10000013752-1kworker/u3:311:06:000
81850620,0irq/46-4a1000000-21swapper10:56:360
20415996249,0cyclictest81850irq/46-4a10000012:25:530
20415996226,0cyclictest0-21swapper09:54:250
81950610,0irq/47-4a1000008628-21kworker/u2:011:03:270
20415996150,0cyclictest81850irq/46-4a10000010:00:050
20415996133,0cyclictest2280-21runrttasks11:31:570
20415996132,0cyclictest0-21swapper10:47:030
101610,0ktimersoftd/027277-21ssh10:08:430
101610,0ktimersoftd/017143-21runrttasks11:10:490
81950600,0irq/47-4a1000004231-1kworker/u3:009:00:400
81950600,0irq/47-4a1000004144-21ssh12:00:500
81950600,0irq/47-4a10000017347-21kworker/u2:309:41:570
81950600,0irq/47-4a10000014707-21kworker/u2:1012:30:360
101600,0ktimersoftd/08494-21sh09:15:550
20415995926,0cyclictest12147-21runrttasks12:20:070
101590,0ktimersoftd/030721-21ssh10:17:560
81950580,0irq/47-4a1000001060-21ssh10:25:190
284492584,0sleep00-21swapper08:00:500
20415995839,0cyclictest81850irq/46-4a10000011:57:110
20415995835,0cyclictest81850irq/46-4a10000010:30:520
20415995830,0cyclictest28917-21ssh10:13:020
101580,0ktimersoftd/02280-21runrttasks08:16:240
101580,0ktimersoftd/021345-21munin-node07:15:070
81850570,0irq/46-4a1000000-21swapper11:27:240
101570,0ktimersoftd/06851-21snmpd07:28:080
81850560,0irq/46-4a1000000-21swapper09:31:020
20415995638,0cyclictest30517-21ssh11:45:290
20415995544,0cyclictest81850irq/46-4a10000011:21:340
20415995537,0cyclictest26755-21munin-run07:50:020
101540,0ktimersoftd/00-21swapper08:44:170
101540,0ktimersoftd/00-21swapper08:06:040
101540,0ktimersoftd/00-21swapper07:44:330
81850530,0irq/46-4a1000000-21swapper08:11:330
101530,0ktimersoftd/00-21swapper07:38:390
101530,0ktimersoftd/00-21swapper07:12:310
101520,0ktimersoftd/00-21swapper09:05:530
101520,0ktimersoftd/00-21swapper08:54:060
101520,0ktimersoftd/00-21swapper08:48:500
20415995111,0cyclictest0-21swapper08:35:010
20415995034,0cyclictest27874-21sshd07:57:200
20415995034,0cyclictest27295-21runrttasks07:53:350
20415995033,0cyclictest6851-21snmpd08:55:130
20415995032,0cyclictest23864-21latency_hist07:30:030
20415995024,0cyclictest31945-21latency_hist08:25:000
20415995024,0cyclictest1751-21latency_hist08:40:030
20415994831,0cyclictest23059-21munin-run07:25:010
20415994731,0cyclictest31519-21kworker/u2:408:28:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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