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2024-11-25 - 14:42

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 Mon Nov 25, 2024 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818502090,0irq/46-4a1000008928-21kworker/0:219:09:530
81850770,0irq/46-4a1000000-21swapper00:05:110
290462777,0sleep029051-21sh22:26:120
192122778,0sleep019217-21ssh22:00:560
154762757,0sleep015482-21ssh21:51:330
141022757,0sleep014107-21ssh00:29:050
81950740,0irq/47-4a10000019096-21kworker/u2:823:34:340
81950730,0irq/47-4a1000003214-21ssh21:20:190
81950730,0irq/47-4a10000031800-21ssh22:33:280
81950720,0irq/47-4a10000030873-21runrttasks21:05:330
81950720,0irq/47-4a10000017408-21ssh23:17:140
81950710,0irq/47-4a100000424-21ssh22:35:520
81850710,0irq/46-4a100000560-21kswapd020:55:450
81950700,0irq/47-4a1000009718-21kworker/u2:421:47:300
81850700,0irq/46-4a1000000-21swapper23:58:200
81850700,0irq/46-4a1000000-21swapper23:51:410
81850700,0irq/46-4a1000000-21swapper00:24:030
81950690,0irq/47-4a100000560-21kswapd023:21:070
81950690,0irq/47-4a1000004778-21ssh22:46:480
81950690,0irq/47-4a10000021152-21kworker/u2:1323:40:070
81950690,0irq/47-4a10000015283-21ssh23:12:100
81950690,0irq/47-4a1000001443-21ssh21:15:590
81950690,0irq/47-4a10000012342-21ssh21:43:310
81850690,0irq/46-4a10000021166-21kworker/u2:1700:11:130
101690,0ktimersoftd/08862-21sh21:34:500
101690,0ktimersoftd/021965-21rm22:08:020
81950680,0irq/47-4a1000006761-21kworker/u2:023:06:190
81950680,0irq/47-4a1000004564-21ssh00:04:590
81950680,0irq/47-4a10000025654-21ssh23:37:160
81850680,0irq/46-4a10000027557-1kworker/u3:423:45:490
81850680,0irq/46-4a10000014025-1kworker/u3:319:15:560
81850680,0irq/46-4a1000000-21swapper21:37:190
81850680,0irq/46-4a1000000-21swapper21:26:420
12494996856,0cyclictest81850irq/46-4a10000022:20:030
101680,0ktimersoftd/09505-21ssh00:17:150
101680,0ktimersoftd/027315-21sh22:21:460
101680,0ktimersoftd/02280-21runrttasks00:30:290
81950670,0irq/47-4a10000024458-21ssh22:14:390
81850670,0irq/46-4a10000022304-1kworker/u3:120:20:530
81850670,0irq/46-4a10000020602-21apt-get23:26:080
101670,0ktimersoftd/02280-21runrttasks00:37:570
101670,0ktimersoftd/018439-21runrttasks19:45:240
81950660,0irq/47-4a1000008724-21ssh22:56:200
81950660,0irq/47-4a1000003323-21ssh22:43:110
81850660,0irq/46-4a1000000-21swapper21:14:260
101660,0ktimersoftd/031441-21diskmemload21:57:160
81950650,0irq/47-4a10000011878-21ssh23:04:020
81850640,0irq/46-4a1000000-21swapper22:52:160
81850630,0irq/46-4a1000002280-21runrttasks20:34:510
81950620,0irq/47-4a1000002054-21cron19:44:010
101610,0ktimersoftd/028095-21latency_hist20:50:030
81950590,0irq/47-4a10000011992-1kworker/u3:519:20:050
248472564,0sleep00-21swapper20:27:480
81850550,0irq/46-4a1000000-21swapper20:19:430
101540,0ktimersoftd/00-21swapper20:06:200
101540,0ktimersoftd/00-21swapper19:25:550
101530,0ktimersoftd/00-21swapper20:11:230
101530,0ktimersoftd/00-21swapper20:02:110
101530,0ktimersoftd/00-21swapper19:33:170
12494995242,0cyclictest101ktimersoftd/020:40:020
12494995234,0cyclictest27071-21runrttasks20:42:460
12494995223,0cyclictest13007-21runrttasks19:13:270
12494995125,0cyclictest19783-21latency_hist19:55:030
12494995031,0cyclictest0-21swapper21:05:010
12494994933,0cyclictest17231-21runrttasks19:37:450
12494994932,0cyclictest28418-21runrttasks20:51:470
12494994530,0cyclictest12492-21cyclictest19:56:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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