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2026-06-16 - 06:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot7s.osadl.org (updated Tue Jun 16, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12817210187,9sleep00-21swapper/019:06:010
1298129582,9sleep20-21swapper/219:08:072
1294729363,10sleep30-21swapper/319:07:403
1075728971,13sleep10-21swapper/119:05:011
13214993534,1cyclictest0-21swapper/022:52:020
1321999270,1cyclictest0-21swapper/221:36:202
1321699261,1cyclictest5952-21diskmemload21:30:121
13224992524,1cyclictest0-21swapper/323:33:573
1321999250,25cyclictest0-21swapper/222:25:542
1322499241,22cyclictest0-21swapper/300:28:583
1321699240,24cyclictest0-21swapper/122:25:551
1321699240,24cyclictest0-21swapper/100:25:521
13219992219,3cyclictest32-21ksoftirqd/223:40:002
1321699220,1cyclictest5952-21diskmemload22:57:241
1321499220,1cyclictest0-21swapper/023:42:510
1321499220,0cyclictest0-21swapper/000:30:310
13219992120,1cyclictest0-21swapper/223:26:502
1321999200,18cyclictest0-21swapper/222:30:042
1321699200,2cyclictest0-21swapper/123:59:481
13214992020,0cyclictest0-21swapper/000:12:270
13214992020,0cyclictest0-21swapper/000:12:260
1321999190,1cyclictest0-21swapper/200:04:532
1321999190,15cyclictest0-21swapper/220:55:132
13216991918,1cyclictest0-21swapper/122:47:471
1321699190,18cyclictest0-21swapper/121:48:491
1321499190,12cyclictest0-21swapper/021:42:420
13219991812,2cyclictest32-21ksoftirqd/223:15:182
1321999180,18cyclictest0-21swapper/221:31:432
1321699188,5cyclictest25-21ksoftirqd/122:17:331
1321699180,1cyclictest0-21swapper/122:30:031
13214991817,1cyclictest0-21swapper/023:55:120
13224991717,0cyclictest0-21swapper/322:55:593
13219991714,2cyclictest0-21swapper/223:04:052
13216991715,2cyclictest38150irq/131-snd_hda19:15:171
1321699171,1cyclictest141rcu_preempt23:25:581
1321699171,0cyclictest141rcu_preempt22:41:251
1321699170,15cyclictest0-21swapper/123:12:361
13214991710,6cyclictest8375-21apache223:37:230
183912160,0sleep20-21swapper/200:09:492
1322499165,5cyclictest26411-21runrttasks00:14:333
1322499165,5cyclictest26411-21runrttasks00:14:323
13224991612,2cyclictest17134-21sh21:35:183
1322499160,1cyclictest0-21swapper/322:52:443
1322499160,1cyclictest0-21swapper/300:22:023
1322499160,15cyclictest0-21swapper/321:43:083
13219991614,1cyclictest0-21swapper/223:07:152
1321999160,15cyclictest0-21swapper/200:30:102
1321699168,1cyclictest25-21ksoftirqd/123:41:281
1321699162,0cyclictest141rcu_preempt23:16:111
13216991611,4cyclictest23978-21hwlatdetect19:30:161
1321499160,0cyclictest0-21swapper/000:29:360
13224991514,1cyclictest0-21swapper/322:20:573
13224991512,2cyclictest9221-21apache_processe23:45:123
1322499150,1cyclictest0-21swapper/321:50:353
1322499150,15cyclictest0-21swapper/322:27:223
13219991513,1cyclictest32-21ksoftirqd/222:08:322
13219991512,2cyclictest32-21ksoftirqd/222:15:222
1321999150,1cyclictest0-21swapper/223:40:352
13216991513,1cyclictest25-21ksoftirqd/121:55:001
13216991512,2cyclictest25-21ksoftirqd/120:45:231
13216991511,3cyclictest4164-21wc19:55:251
1321699150,15cyclictest0-21swapper/121:25:521
1321699150,14cyclictest0-21swapper/121:41:381
1321699150,0cyclictest0-21swapper/100:03:321
1321499155,1cyclictest5952-21diskmemload21:37:020
1321499153,7cyclictest24300-21idleruntime-cro23:34:590
1321499151,7cyclictest25315-21perf19:35:000
13214991512,2cyclictest19181-21ssh23:50:220
13214991512,1cyclictest0-21swapper/023:25:370
1321499150,2cyclictest0-21swapper/000:01:470
1321499150,0cyclictest0-21swapper/000:19:370
13224991414,0cyclictest0-21swapper/300:03:343
13224991413,1cyclictest0-21swapper/323:50:113
13224991413,1cyclictest0-21swapper/321:45:343
13224991410,2cyclictest9499-21cat21:30:253
1322499140,12cyclictest32101-21grep21:25:143
13219991412,1cyclictest32-21ksoftirqd/223:30:072
13219991411,2cyclictest19558-21tail23:50:242
13219991411,2cyclictest15503-21sed21:15:152
13219991410,3cyclictest15991-21cut23:10:182
1321999140,14cyclictest0-21swapper/222:36:162
1321999140,13cyclictest27678-21sensors23:55:242
13216991413,1cyclictest0-21swapper/123:37:551
13216991412,1cyclictest25-21ksoftirqd/121:39:521
13216991412,1cyclictest0-21swapper/122:20:271
13216991412,1cyclictest0-21swapper/122:00:081
1321699140,13cyclictest3613-21basename00:20:131
1321699140,13cyclictest0-21swapper/123:02:361
1321499142,1cyclictest0-21swapper/020:20:130
1321499141,7cyclictest17977-21grep19:20:010
1321499140,1cyclictest0-21swapper/023:20:540
13224991310,2cyclictest28673-21grep19:40:143
13224991310,2cyclictest26753-21grep19:35:223
13224991310,2cyclictest25617-21head23:35:183
13224991310,2cyclictest21380-21sh22:35:183
13224991310,2cyclictest20344-21head20:30:173
1322499130,12cyclictest0-21swapper/321:20:363
1321999139,3cyclictest27208-21rm00:15:002
1321999139,3cyclictest27208-21rm00:15:002
1321999132,6cyclictest0-21swapper/222:14:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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