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2026-08-10 - 11:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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: 100 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 rack4slot1s.osadl.org (updated Mon Aug 10, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1558721320,1sleep115590-21fschecks_time19:33:571
831421170,3chrt0-21swapper/320:39:083
831421170,3chrt0-21swapper/320:39:083
1842121020,3chrt0-21swapper/323:59:073
1842121020,3chrt0-21swapper/323:59:073
1842121020,3chrt0-21swapper/323:59:073
230132670,2chrt0-21swapper/000:13:510
299082600,2sleep029959-21fschecks_count21:38:550
299082600,2sleep029959-21fschecks_count21:38:550
8230995851,4cyclictest0-21swapper/100:04:291
8230995851,4cyclictest0-21swapper/100:04:291
256232580,1sleep125783-21grep22:53:571
42932570,3sleep10-21swapper/120:29:051
85092550,3sleep08511-21grep20:39:090
85092550,3sleep08511-21grep20:39:090
271492540,3chrt0-21swapper/322:58:453
822999531,2cyclictest0-21swapper/022:27:420
822999511,2cyclictest0-21swapper/000:18:450
232122510,5sleep1281ktimers/119:53:591
232122510,5sleep1281ktimers/119:53:591
8229995042,5cyclictest0-21swapper/000:03:590
8229995042,5cyclictest0-21swapper/000:03:590
314182500,3sleep30-21swapper/323:08:583
314182500,3sleep30-21swapper/323:08:583
822999491,33cyclictest11873-21taskset22:15:080
822999491,33cyclictest11873-21taskset22:15:080
822999491,33cyclictest11873-21taskset22:15:080
271842490,3chrt0-21swapper/100:23:571
271842490,3chrt0-21swapper/100:23:571
822999484,28cyclictest21489-21seq22:43:220
822999484,28cyclictest21489-21seq22:43:220
822999481,34cyclictest11263-21taskset23:39:450
822999481,34cyclictest11263-21taskset23:39:450
822999481,33cyclictest23253-21chrt22:46:480
822999481,33cyclictest23253-21chrt22:46:480
822999481,33cyclictest19525-21taskset22:37:020
822999481,33cyclictest19525-21taskset22:37:020
822999481,33cyclictest15266-21taskset23:52:450
822999481,33cyclictest15266-21taskset23:52:450
822999481,2cyclictest0-21swapper/022:30:300
822999471,33cyclictest30712-21taskset23:06:380
822999471,32cyclictest9625-21taskset23:37:370
822999471,32cyclictest8357-21taskset22:08:120
822999471,32cyclictest8357-21taskset22:08:120
822999471,32cyclictest28032-21chrt20:06:040
822999471,32cyclictest24180-21chrt19:54:430
822999471,32cyclictest24180-21chrt19:54:430
822999471,32cyclictest10565-21chrt20:45:240
822999471,32cyclictest10565-21chrt20:45:240
822999471,31cyclictest28712-21taskset23:00:110
822999471,31cyclictest28712-21taskset23:00:110
822999471,30cyclictest24952-21taskset22:49:410
822999471,30cyclictest23729-21runrttasks21:21:130
822999471,30cyclictest23729-21runrttasks21:21:130
822999471,29cyclictest8625-21seq22:08:530
822999471,29cyclictest8625-21seq22:08:530
822999471,29cyclictest25605-21taskset21:25:280
822999471,1cyclictest0-21swapper/020:20:380
822999471,1cyclictest0-21swapper/020:20:380
8229994622,22cyclictest0-21swapper/020:24:030
822999461,32cyclictest18566-21seq19:39:390
822999461,32cyclictest18566-21seq19:39:390
822999461,32cyclictest18184-21taskset21:07:020
822999461,32cyclictest18184-21taskset21:07:020
822999461,31cyclictest2740-21seq21:53:290
822999461,31cyclictest2740-21seq21:53:290
822999461,31cyclictest20170-21runrttasks21:13:380
822999461,31cyclictest13836-21taskset22:20:590
822999461,31cyclictest13836-21taskset22:20:590
822999461,31cyclictest13836-21taskset22:20:590
822999461,30cyclictest14856-21runrttasks19:29:500
822999461,29cyclictest4830-21chrt20:29:360
822999460,32cyclictest7761-21seq23:33:030
822999460,32cyclictest7761-21seq23:33:030
115702460,2chrt0-21swapper/322:14:073
115702460,2chrt0-21swapper/322:14:073
115702460,2chrt0-21swapper/322:14:073
822999451,31cyclictest749-21runrttasks23:46:460
822999451,31cyclictest22539-21taskset19:52:330
822999451,31cyclictest12397-21seq20:50:060
822999451,31cyclictest12397-21seq20:50:060
822999451,30cyclictest6289-21seq22:00:530
822999451,30cyclictest6289-21seq22:00:530
822999451,30cyclictest536-21chrt21:44:290
822999451,30cyclictest536-21chrt21:44:290
822999451,30cyclictest32681-21taskset23:13:040
822999451,30cyclictest32681-21taskset23:13:040
822999451,30cyclictest20457-21chrt19:44:420
822999451,30cyclictest20422-21chrt21:13:580
822999451,30cyclictest20422-21chrt21:13:580
822999451,30cyclictest18763-21taskset23:59:480
822999451,30cyclictest18763-21taskset23:59:480
822999451,30cyclictest18763-21taskset23:59:480
822999451,30cyclictest16795-21seq19:35:490
822999451,30cyclictest16281-21taskset21:01:480
822999451,29cyclictest17077-21taskset23:57:070
822999451,29cyclictest17077-21taskset23:57:070
822999451,28cyclictest749-21runrttasks00:40:280
822999451,28cyclictest749-21runrttasks00:40:280
822999451,28cyclictest28317-21taskset00:27:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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