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2026-03-14 - 20:31

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 Sat Mar 14, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21955210165,31sleep00-21swapper/007:07:380
2193529342,46sleep10-21swapper/107:07:231
2183828859,9sleep30-21swapper/307:06:093
2202428068,8sleep20-21swapper/207:08:332
22222992522,2cyclictest25-21ksoftirqd/111:28:081
2222099250,5cyclictest0-21swapper/012:04:360
2222999240,1cyclictest0-21swapper/312:29:123
2222099242,21cyclictest0-21swapper/009:41:590
2222099240,0cyclictest0-21swapper/009:29:020
2222299233,17cyclictest0-21swapper/111:55:121
22222992219,1cyclictest0-21swapper/112:14:121
22220992219,2cyclictest22430-21sensors10:50:240
2222099220,2cyclictest0-21swapper/010:38:510
2222999212,19cyclictest0-21swapper/310:07:003
2222699210,20cyclictest0-21swapper/212:14:552
26862200,0chrt0-21swapper/109:20:581
22229992013,5cyclictest22653-21sh11:30:083
2222699201,18cyclictest0-21swapper/210:46:592
2222699201,18cyclictest0-21swapper/210:46:592
2222099202,18cyclictest0-21swapper/009:52:160
31092190,2sleep10-21swapper/110:58:531
2222699191,3cyclictest0-21swapper/207:25:132
2222699190,1cyclictest141rcu_preempt11:53:012
2222699190,19cyclictest0-21swapper/210:34:122
2222699190,10cyclictest15227-21diskmemload09:20:132
2222299191,13cyclictest15227-21diskmemload11:40:151
2222299190,2cyclictest0-21swapper/111:46:491
2222099192,17cyclictest0-21swapper/010:42:230
2222999180,1cyclictest0-21swapper/309:33:173
2222699180,18cyclictest0-21swapper/210:37:512
2222699180,17cyclictest0-21swapper/210:23:072
2222699180,11cyclictest0-21swapper/207:20:132
22222991815,2cyclictest25-21ksoftirqd/112:25:271
22220991817,1cyclictest0-21swapper/010:04:160
2222999170,17cyclictest0-21swapper/311:07:373
2222699170,17cyclictest0-21swapper/210:04:302
22222991713,3cyclictest3650-21aten2_r7power_e08:45:131
2222299170,1cyclictest141rcu_preempt10:49:281
2222299170,1cyclictest141rcu_preempt10:49:281
2222099174,11cyclictest17359-21ssh12:25:130
2222099173,5cyclictest0-21swapper/011:55:120
2222099170,5cyclictest0-21swapper/010:07:130
22229991616,0cyclictest0-21swapper/312:34:263
22229991616,0cyclictest0-21swapper/309:29:493
22229991615,1cyclictest0-21swapper/311:45:153
22229991613,2cyclictest39-21ksoftirqd/308:00:203
2222999160,16cyclictest0-21swapper/312:35:413
2222999160,16cyclictest0-21swapper/311:38:553
2222699160,15cyclictest0-21swapper/210:50:242
22222991612,1cyclictest25-21ksoftirqd/110:08:021
2222299160,15cyclictest22532-21df_abs11:10:141
2222099163,7cyclictest15227-21diskmemload09:32:500
22220991613,2cyclictest4100-21idleruntime-cro07:39:590
2222999153,6cyclictest24689-21entropy09:15:153
2222999152,13cyclictest0-21swapper/310:51:313
22229991511,2cyclictest39-21ksoftirqd/309:55:363
22229991511,2cyclictest29964-21ntpq08:30:213
2222999150,2cyclictest0-21swapper/310:49:443
2222999150,2cyclictest0-21swapper/310:49:443
2222699150,3cyclictest0-21swapper/211:36:562
2222299152,8cyclictest15227-21diskmemload11:52:141
22222991511,1cyclictest25-21ksoftirqd/109:54:521
22222991510,1cyclictest25-21ksoftirqd/109:17:231
2222099153,9cyclictest15227-21diskmemload11:51:510
2222099151,4cyclictest0-21swapper/011:25:130
2222999141,3cyclictest141rcu_preempt09:45:183
2222999140,1cyclictest0-21swapper/310:44:253
2222999140,13cyclictest0-21swapper/311:22:113
22226991412,2cyclictest32-21ksoftirqd/210:06:382
2222699140,14cyclictest0-21swapper/212:39:512
2222299149,4cyclictest9143-21tr12:20:141
2222299144,9cyclictest3768-21taskset10:20:161
2222299142,10cyclictest0-21swapper/110:10:131
22222991412,1cyclictest11403-21ssh10:44:361
2222299141,1cyclictest25630-21ssh12:30:131
22222991411,2cyclictest17157-21wc09:10:211
22222991410,3cyclictest8090-21munin-plugin-st08:55:001
22222991410,3cyclictest5492-21ssh12:36:581
22222991410,3cyclictest26061-21tr07:15:221
22222991410,3cyclictest19407-21cut08:10:161
22222991410,2cyclictest711-21grep07:30:181
22222991410,2cyclictest3406-21wc08:45:001
2222299140,1cyclictest0-21swapper/110:39:371
2222299140,13cyclictest13171-21tail07:55:271
2222099148,5cyclictest9170-21sh10:23:470
2222099140,0cyclictest0-21swapper/009:21:060
311682130,1sleep015227-21diskmemload09:38:450
2222999139,3cyclictest14871-21perf11:45:003
2222999139,3cyclictest1149-21cat09:20:203
22229991310,2cyclictest9795-21awk10:05:003
22229991310,2cyclictest6200-21grep08:50:133
22229991310,2cyclictest5128-21grep07:40:183
22229991310,2cyclictest31961-21grep08:35:173
22229991310,2cyclictest3022-21ssh10:20:133
22229991310,2cyclictest29755-21cron11:15:003
22229991310,2cyclictest25884-21head09:35:193
22229991310,2cyclictest25619-21grep12:10:163
22229991310,2cyclictest24754-21cat07:15:013
2222999130,12cyclictest21760-21ssh11:29:373
2222999130,12cyclictest0-21swapper/310:56:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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