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2025-11-15 - 23:30

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 100 highest latencies:
System rack9slot8s.osadl.org (updated Sat Nov 15, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819502910,0irq/47-4a1000009-21ksoftirqd/007:05:100
1534328610,0sleep015351-21sh10:17:280
81950690,0irq/47-4a10000021366-21ssh10:30:090
101690,0ktimersoftd/011953-21ssh11:19:260
81950670,0irq/47-4a10000031844-1kworker/u3:012:01:280
101670,0ktimersoftd/09676-21diskmemload12:23:150
101670,0ktimersoftd/029309-21sh11:56:030
81950660,0irq/47-4a10000032133-21ssh09:44:120
81950660,0irq/47-4a1000002083-21ssh10:58:210
81950660,0irq/47-4a10000015646-21ssh11:27:080
81950660,0irq/47-4a10000012767-21ssh10:12:060
30025996630,0cyclictest4433-21ssh12:11:580
81950650,0irq/47-4a1000009443-21ssh11:14:040
81950650,0irq/47-4a1000009-21ksoftirqd/009:15:410
81950650,0irq/47-4a10000029405-1kworker/u3:307:16:400
81950650,0irq/47-4a1000002404-21ssh12:07:390
81950650,0irq/47-4a10000023351-21ssh11:43:380
81850650,0irq/46-4a10000024392-1kworker/u3:411:45:410
81850650,0irq/46-4a1000000-21swapper11:30:200
101650,0ktimersoftd/03938-21ssh09:53:130
101650,0ktimersoftd/025883-21ssh09:30:390
81950640,0irq/47-4a1000002195-21ssh09:49:340
81950640,0irq/47-4a10000015180-21lldpd09:11:320
81950640,0irq/47-4a10000012658-21ssh11:20:420
101640,0ktimersoftd/030359-21sh10:49:290
101640,0ktimersoftd/020727-21sh10:28:580
81950630,0irq/47-4a1000007606-21ssh12:18:530
81950630,0irq/47-4a1000005062-21ssh11:04:440
81950630,0irq/47-4a10000015180-21lldpd08:05:570
303422638,0sleep029997-21apt-get07:10:050
101630,0ktimersoftd/025132-21ssh09:29:120
101630,0ktimersoftd/022327-21sh09:23:080
81950620,0irq/47-4a10000015379-21ssh12:35:190
81850620,0irq/46-4a1000000-21swapper11:35:220
101620,0ktimersoftd/07544-21sh10:00:480
101620,0ktimersoftd/028206-21ssh09:35:380
101620,0ktimersoftd/015993-21diskmemload10:41:340
81950610,0irq/47-4a10000012610-21ssh12:29:380
81950610,0irq/47-4a10000010632-21ssh10:07:320
81850610,0irq/46-4a1000000-21swapper12:34:230
30025996128,0cyclictest0-21swapper09:58:020
101600,0ktimersoftd/027688-21ssh11:52:420
101600,0ktimersoftd/011046-21sshd08:36:110
81950590,0irq/47-4a1000006442-21ssh11:07:350
81950590,0irq/47-4a10000015180-21lldpd07:54:580
81850590,0irq/46-4a1000000-21swapper10:52:360
81950580,0irq/47-4a10000024962-21ssh10:37:570
81850580,0irq/46-4a1000000-21swapper10:24:520
101580,0ktimersoftd/015201-21runrttasks09:04:350
81850550,0irq/46-4a1000000-21swapper08:52:540
101540,0ktimersoftd/00-21swapper08:34:240
101540,0ktimersoftd/00-21swapper08:27:200
101540,0ktimersoftd/00-21swapper07:40:530
101540,0ktimersoftd/00-21swapper07:32:540
101530,0ktimersoftd/00-21swapper09:07:220
101530,0ktimersoftd/00-21swapper07:45:060
101530,0ktimersoftd/00-21swapper07:21:170
101520,0ktimersoftd/00-21swapper07:54:130
81850510,0irq/46-4a10000014901-21cron08:59:540
30025995141,0cyclictest101ktimersoftd/008:48:160
30025995117,0cyclictest5934-21sshd08:01:380
30025994933,0cyclictest9347-21latency_hist08:24:540
30025994727,0cyclictest5171-21kworker/u2:408:19:530
3002599467,0cyclictest7395-21seq08:11:350
30025994632,0cyclictest11741-21sshd08:40:410
30025994630,0cyclictest2214-21sshd07:36:370
30025994530,0cyclictest32473-21kworker/u2:107:29:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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