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2026-05-19 - 23:57

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 May 19, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2156429986,9sleep00-21swapper/007:09:460
2123429279,9sleep20-21swapper/207:05:302
2126528565,9sleep30-21swapper/307:05:543
2128528466,14sleep10-21swapper/107:06:091
43322550,0sleep00-21swapper/011:38:350
21676992626,0cyclictest0-21swapper/310:19:593
21676992321,2cyclictest39-21ksoftirqd/310:38:553
2167699231,20cyclictest0-21swapper/311:36:573
2167499230,23cyclictest0-21swapper/211:36:372
2167499230,23cyclictest0-21swapper/210:16:202
2166999230,3cyclictest0-21swapper/110:31:431
2166599210,17cyclictest0-21swapper/011:53:000
2167499200,20cyclictest0-21swapper/212:06:142
2167499200,19cyclictest0-21swapper/210:47:052
21669992018,1cyclictest0-21swapper/108:05:211
2166599200,2cyclictest0-21swapper/010:17:500
2167499190,19cyclictest0-21swapper/212:12:082
2167499190,18cyclictest0-21swapper/212:25:462
2166999193,2cyclictest141rcu_preempt11:05:091
2166999190,3cyclictest0-21swapper/111:04:231
2166599191,3cyclictest141rcu_preempt09:50:150
21669991815,2cyclictest25-21ksoftirqd/112:00:161
21669991815,2cyclictest25-21ksoftirqd/110:15:011
2166999180,3cyclictest141rcu_preempt10:43:591
2166999180,1cyclictest141rcu_preempt11:19:171
21665991818,0cyclictest0-21swapper/009:46:410
21665991818,0cyclictest0-21swapper/009:24:280
2166599180,0cyclictest0-21swapper/009:33:190
2167499170,3cyclictest0-21swapper/212:35:542
2167499170,1cyclictest0-21swapper/210:52:482
2167499170,13cyclictest0-21swapper/209:40:332
2166999179,7cyclictest16396-21grep12:05:131
2166999172,1cyclictest141rcu_preempt10:16:471
21669991716,1cyclictest14419-21diskmemload10:38:551
21669991712,4cyclictest25-21ksoftirqd/112:24:091
2166999170,17cyclictest0-21swapper/111:45:241
21665991715,1cyclictest722-21sed08:40:170
2166599171,0cyclictest141rcu_preempt10:46:160
2166599170,17cyclictest0-21swapper/010:56:100
193412170,1sleep30-21swapper/310:49:563
2167699162,12cyclictest9440-21sendmail09:00:003
2167699161,8cyclictest0-21swapper/311:10:143
2167699160,1cyclictest0-21swapper/312:05:213
2167699160,1cyclictest0-21swapper/310:53:253
2167699160,15cyclictest0-21swapper/311:26:353
21674991615,1cyclictest0-21swapper/209:28:272
21674991611,5cyclictest18772-21apache209:39:092
21669991614,1cyclictest13013-21latency_hist07:59:591
2166999160,16cyclictest0-21swapper/111:34:341
2166599161,1cyclictest0-21swapper/011:08:380
2167699155,8cyclictest449-21irqbalance11:51:223
21676991512,2cyclictest0-21swapper/309:30:393
2167699151,1cyclictest141rcu_preempt12:24:433
21676991511,2cyclictest1835-21grep12:35:173
21676991511,2cyclictest16334-21sleep09:50:003
2167499153,11cyclictest55550irq/126-enp2s0-12:00:142
2167499152,2cyclictest0-21swapper/211:41:322
21674991514,1cyclictest0-21swapper/210:43:442
2167499150,1cyclictest0-21swapper/210:56:032
2167499150,15cyclictest0-21swapper/211:53:362
2166999154,7cyclictest31918-21df_abs07:30:151
2166999150,7cyclictest0-21swapper/112:14:211
2166999150,13cyclictest0-21swapper/112:29:051
21676991411,2cyclictest31190-21cut11:15:223
21676991411,2cyclictest14920-21grep08:00:263
21676991410,3cyclictest8480-21cat12:20:003
21676991410,3cyclictest13914-21grep09:05:263
2167699140,14cyclictest0-21swapper/310:40:203
21674991414,0cyclictest0-21swapper/210:36:312
21674991414,0cyclictest0-21swapper/210:01:532
21674991412,1cyclictest3024-21tune2fs08:45:152
2167499141,0cyclictest0-21swapper/209:14:492
2167499140,14cyclictest0-21swapper/211:47:322
2167499140,12cyclictest27863-21tr08:30:132
21669991411,2cyclictest21528-21tr11:10:141
2166999141,11cyclictest5492-21ssh11:20:031
2166999140,1cyclictest141rcu_preempt11:40:371
2166599149,3cyclictest13497-21ssh12:22:350
2166599143,6cyclictest959-21munin-run12:35:000
21665991411,2cyclictest17772-21cron08:10:000
21665991410,3cyclictest25508-21awk07:15:230
2166599140,10cyclictest0-21swapper/012:25:130
2167699134,4cyclictest0-21swapper/312:00:143
21676991312,1cyclictest0-21swapper/311:01:533
21676991310,2cyclictest5919-21cat07:45:003
21676991310,2cyclictest39162sleep310:01:023
21676991310,2cyclictest32396-21grep09:20:153
21676991310,2cyclictest2517-21grep10:20:143
21676991310,2cyclictest23174-21grep08:20:143
21676991310,2cyclictest22955-21sleep11:50:003
21676991310,2cyclictest19300-21sed08:10:233
21676991310,2cyclictest18652-21grep10:10:163
21676991310,2cyclictest18627-21ssh12:25:223
21676991310,2cyclictest17248-21ssh09:50:143
21676991310,2cyclictest1242-21wc08:40:223
21676991310,2cyclictest1103-21cron07:34:593
2167699130,11cyclictest0-21swapper/309:16:253
2167499139,2cyclictest19320-21ls08:10:222
2167499131,1cyclictest14419-21diskmemload11:25:192
21674991311,1cyclictest21884-21ssh09:52:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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