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2025-11-17 - 13:31

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 here to display the system's profile data or here to proceed to next system.
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 Mon Nov 17, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818502140,0irq/46-4a1000001167-21kworker/0:219:09:050
2131998969,0cyclictest4399-21ssh21:43:220
2131998969,0cyclictest25608-21ssh23:37:140
2131998770,0cyclictest23525-21ssh22:23:420
2131998661,0cyclictest9-21ksoftirqd/022:35:400
2131998657,0cyclictest6103-21kworker/u2:121:48:020
2131998568,0cyclictest11642-21ssh23:07:200
2131998565,0cyclictest29362-21ssh21:27:330
2131998469,0cyclictest20221-21ssh23:25:360
2131998466,0cyclictest1086-21chrt23:54:070
2131998463,0cyclictest14352-21ssh00:22:140
2131998266,0cyclictest25140-21runrttasks21:18:450
2131998265,0cyclictest22486-21sh00:39:400
2131998264,0cyclictest5432-21ssh22:54:100
2131998164,0cyclictest31077-21ssh21:31:080
2131998162,0cyclictest2881-21seq23:57:520
2131998066,0cyclictest15498-21seq20:34:410
2131998065,0cyclictest17594-21chrt20:47:030
2131998064,0cyclictest8118-21rm00:09:020
2131998064,0cyclictest19054-21seq20:56:590
2131998064,0cyclictest11205-21seq20:05:000
2131998063,0cyclictest22085-21chrt21:12:140
2131998062,0cyclictest6787-21ssh22:56:580
2131997965,0cyclictest12051-21ssh21:59:360
2131997963,0cyclictest18005-21rm23:20:510
2131997962,0cyclictest8282-21ssh21:51:290
2131997962,0cyclictest4818-21ssh00:01:530
2131997962,0cyclictest15902-21sh23:16:260
2131997960,0cyclictest27024-21apt-config23:40:080
2131997862,0cyclictest30269-21rm23:47:030
2131997862,0cyclictest27848-21ssh22:32:470
2131997862,0cyclictest13710-21seq20:22:120
2131997759,0cyclictest23534-21sh23:32:470
2131997661,0cyclictest12435-21seq20:14:060
2131997660,0cyclictest13521-21ssh22:02:340
2131997659,0cyclictest9033-21seq00:10:510
2131997659,0cyclictest26073-21ssh22:29:050
2131997561,0cyclictest31396-21rm22:40:040
2131997559,0cyclictest3280-21rm22:49:340
2131997459,0cyclictest27490-21ssh21:23:390
2131997458,0cyclictest1190-21sh21:36:340
2131997258,0cyclictest19916-21seq21:02:480
2131997257,0cyclictest172582sleep022:10:200
2131997155,0cyclictest16658-21diskmemload00:27:080
2131997153,0cyclictest13111-21diskmemload00:19:440
2131997056,0cyclictest10677-21seq20:01:390
2131997054,0cyclictest13578-21ssh23:11:270
2131996956,0cyclictest8667-21apt-get19:50:050
2131996956,0cyclictest20814-21ssh22:17:580
2131996853,0cyclictest8322-21ssh23:00:070
2131996850,0cyclictest19198-21ssh00:32:330
2131996446,0cyclictest0-21swapper22:05:580
2131996044,0cyclictest81850irq/46-4a10000019:14:550
2131995843,0cyclictest15537-21apt-get20:35:050
2131995747,0cyclictest101ktimersoftd/020:17:510
2131995543,0cyclictest81850irq/46-4a10000019:15:240
2131995539,0cyclictest0-21swapper19:43:060
2131995444,0cyclictest101ktimersoftd/021:06:380
2131995437,0cyclictest7243-21latency_hist19:39:550
2131995437,0cyclictest5797-21latency_hist19:29:540
2131995343,0cyclictest101ktimersoftd/020:52:230
2131994938,0cyclictest81850irq/46-4a10000019:59:520
2131994933,0cyclictest5752-21latency_hist19:29:530
213199489,0cyclictest4832-21runrttasks19:23:530
2131994834,0cyclictest8622-21runrttasks19:49:370
2131994832,0cyclictest16951-21runrttasks20:42:480
2131994831,0cyclictest2129-21cyclictest20:27:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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