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2025-12-01 - 14:29

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 Dec 01, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501290,0irq/47-4a10000015180-21lldpd19:09:240
81850870,0irq/46-4a10000011282-21chrt00:24:070
81850830,0irq/46-4a1000001303-21chrt22:53:320
81850820,0irq/46-4a10000023575-21runrttasks23:40:590
81850800,0irq/46-4a1000007439-21seq23:06:310
81850800,0irq/46-4a10000014845-21ssh00:31:380
81850770,0irq/46-4a1000006824-21ssh21:56:230
81850770,0irq/46-4a1000005310-21ssh00:11:220
81850770,0irq/46-4a10000027859-21ssh22:40:440
81850770,0irq/46-4a10000025250-21ssh22:35:200
81850760,0irq/46-4a10000011528-21ssh22:06:170
81850750,0irq/46-4a1000007398-21ssh00:15:500
81850750,0irq/46-4a1000001737-21ssh00:03:500
81850740,0irq/46-4a1000009359-21runrttasks23:10:350
81850740,0irq/46-4a10000030214-21ssh23:55:140
81850740,0irq/46-4a10000029870-21ssh21:36:350
81850740,0irq/46-4a10000026344-21sshd21:29:160
81850740,0irq/46-4a10000019895-21ssh21:15:330
81850740,0irq/46-4a10000017141-21diskmemload23:39:320
81850740,0irq/46-4a10000015604-21http22:15:000
35502740,0chrt32342-21kworker/u2:400:07:390
81950730,0irq/47-4a1000009-21ksoftirqd/019:40:200
81850730,0irq/46-4a1000004107-21modprobe22:59:350
81850730,0irq/46-4a10000024324-21ssh22:33:290
81850730,0irq/46-4a10000017139-21sh21:09:560
81850730,0irq/46-4a10000016698-21kworker/u2:121:14:080
81850730,0irq/46-4a10000015330-21ssh23:23:280
81850730,0irq/46-4a10000014826-21in:imuxsock22:15:450
81850730,0irq/46-4a10000012651-21kworker/u2:420:49:540
81850730,0irq/46-4a10000010602-21ssh22:04:270
81850720,0irq/46-4a1000004728-21ssh23:00:400
81850720,0irq/46-4a100000445-21ssh21:43:020
81850720,0irq/46-4a10000011600-21sh23:15:240
81950710,0irq/47-4a10000015952-21kworker/u2:621:45:240
81850710,0irq/46-4a1000005397-21kworker/u2:120:04:530
81850710,0irq/46-4a10000020437-21kworker/u2:221:33:130
81850700,0irq/46-4a1000004850-21ssh21:52:160
81850700,0irq/46-4a1000004804-21seq19:47:520
81850700,0irq/46-4a10000015201-21runrttasks20:25:200
148172700,0chrt12651-21kworker/u2:420:54:250
77032690,0sleep06475-21kworker/u2:320:07:210
180472690,0sleep017127-21kworker/u2:100:38:350
123582690,0sleep012261-21kworker/u2:220:37:340
81850680,0irq/46-4a1000009405-21kworker/u2:222:24:000
81850680,0irq/46-4a10000023453-21kworker/u2:122:45:190
81850680,0irq/46-4a10000016698-21kworker/u2:121:20:400
220472680,0sleep016276-21kworker/u2:022:28:360
125742680,0sleep012347-21kworker/u2:300:26:470
94650670,0irq/33-mmc026873-1kworker/0:2H20:23:280
81850670,0irq/46-4a10000017262-21ssh23:27:340
81850660,0irq/46-4a10000028435-1kworker/u3:023:54:370
81850640,0irq/46-4a10000023667-21kworker/u2:623:46:080
81950630,0irq/47-4a1000009750-21kworker/u2:223:30:170
81950600,0irq/47-4a10000032470-1kworker/u3:119:20:580
81850580,0irq/46-4a1000000-21swapper19:27:080
30972995544,0cyclictest81850irq/46-4a10000019:55:050
81950540,0irq/47-4a1000005398-1kworker/u3:120:18:160
81850530,0irq/46-4a1000000-21swapper19:15:070
30972995038,0cyclictest81850irq/46-4a10000020:54:560
30972994831,0cyclictest6475-21kworker/u2:320:09:550
30972994831,0cyclictest3392-21/usr/sbin/munin19:39:550
30972994829,0cyclictest0-21swapper20:34:530
30972994823,0cyclictest15201-21runrttasks21:02:440
30972994731,0cyclictest13249-21sshd20:43:370
30972994719,0cyclictest2057-21sshd19:30:120
30972994633,0cyclictest30970-21cyclictest19:10:380
30972994630,0cyclictest30970-21cyclictest19:54:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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