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2026-04-13 - 07:56

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 50 highest latencies:
System rack9slot8s.osadl.org (updated Mon Apr 13, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501960,0irq/46-4a10000029909-21kworker/0:319:08:190
315902839,0sleep031596-21ssh21:41:350
82050740,0irq/47-4a10000027027-21ssh21:32:010
101740,0ktimersoftd/017565-21ssh00:38:450
82050710,0irq/47-4a10000011699-21cron21:05:590
101710,0ktimersoftd/014217-21ssh22:13:410
82050690,0irq/47-4a1000004387-21ssh00:10:340
82050690,0irq/47-4a1000004318-1kworker/u3:323:04:210
82050690,0irq/47-4a10000032564-21ssh00:01:330
101690,0ktimersoftd/07360-21ssh23:08:040
101690,0ktimersoftd/032210-21ssh22:51:550
101690,0ktimersoftd/025664-21chrt21:29:150
101690,0ktimersoftd/02389-21ssh22:57:300
101690,0ktimersoftd/022809-21ssh21:23:100
101690,0ktimersoftd/019352-21ssh21:15:530
101690,0ktimersoftd/011335-21ssh23:16:270
82050680,0irq/47-4a10000029170-21kworker/u2:121:50:520
82050680,0irq/47-4a10000025518-21kworker/u2:223:52:420
101680,0ktimersoftd/09976-21ssh22:04:410
101680,0ktimersoftd/06423-21ssh21:56:570
101680,0ktimersoftd/030610-21ssh22:48:340
101680,0ktimersoftd/03040-21sshd19:40:180
101680,0ktimersoftd/024251-21ssh23:43:590
101680,0ktimersoftd/019341-21ssh22:24:380
101680,0ktimersoftd/01828-21ssh00:05:070
101680,0ktimersoftd/017017-21ssh22:19:430
101680,0ktimersoftd/010938-21ssh22:06:350
101680,0ktimersoftd/010723-21ssh00:24:110
82050670,0irq/47-4a10000013210-21ssh23:20:180
82050670,0irq/47-4a10000011699-21cron23:13:000
82050670,0irq/47-4a10000011699-21cron19:53:010
101670,0ktimersoftd/027235-21ssh22:41:220
101670,0ktimersoftd/026994-21ssh23:49:530
101670,0ktimersoftd/025518-21kworker/u2:223:55:570
101670,0ktimersoftd/024653-21ssh22:35:500
101670,0ktimersoftd/020668-21ssh23:36:170
101670,0ktimersoftd/019845-21ssh22:25:320
101670,0ktimersoftd/018230-21ssh23:31:040
101670,0ktimersoftd/014800-21ssh00:32:480
82050660,0irq/47-4a10000022268-21ssh22:30:430
81950660,0irq/46-4a1000008380-1kworker/u3:020:20:150
81950660,0irq/46-4a10000026282chrt19:38:080
81950660,0irq/46-4a10000017413-1kworker/u3:021:11:560
81950660,0irq/46-4a1000000-21swapper20:36:190
101660,0ktimersoftd/07232-21rm00:16:420
101660,0ktimersoftd/028962-21ssh21:36:040
82050650,0irq/47-4a10000015516-21ssh23:25:130
82050650,0irq/47-4a10000012647-21ssh00:28:130
101650,0ktimersoftd/02545-21ssh21:48:480
101650,0ktimersoftd/014102-21runrttasks20:54:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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