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2026-05-02 - 18:52

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 May 02, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1174229949,44sleep20-21swapper/207:05:242
1109729884,9sleep00-21swapper/007:05:180
1235228666,9sleep30-21swapper/307:06:543
1228028467,13sleep10-21swapper/107:05:551
12686993129,1cyclictest6118-21diskmemload12:24:253
1268699290,1cyclictest0-21swapper/311:30:133
1267999270,23cyclictest0-21swapper/111:33:181
1267999250,0cyclictest0-21swapper/111:58:391
1267999240,24cyclictest0-21swapper/110:55:471
1267999230,2cyclictest0-21swapper/107:20:001
1267299230,23cyclictest0-21swapper/011:58:460
12679992219,2cyclictest94-21kswapd009:36:521
12679992219,2cyclictest5007-21cut10:45:231
1267999220,2cyclictest0-21swapper/112:01:511
12672992220,1cyclictest75592sleep012:24:190
12686992119,1cyclictest24460-21cat11:55:183
12682992119,1cyclictest14208-21cut11:10:202
12682992118,2cyclictest11044-21aten2_r7power_p10:30:142
12679992119,1cyclictest8399-21fschecks_count09:30:201
12679992119,1cyclictest15200-21aten2_r7power_c09:15:121
1267999211,13cyclictest0-21swapper/109:55:131
12672992119,1cyclictest9223-21df_abs09:50:150
1267299210,20cyclictest0-21swapper/009:13:440
103472210,1sleep210351-21latency_hist10:30:002
12686992019,1cyclictest0-21swapper/312:17:283
12686992019,1cyclictest0-21swapper/309:40:193
12682992017,2cyclictest13955-21cut11:30:132
1267999201,2cyclictest17680-21kworker/1:212:22:031
1267299200,20cyclictest0-21swapper/011:42:470
39842190,2sleep20-21swapper/210:05:532
12686991918,1cyclictest0-21swapper/311:46:543
12682991917,1cyclictest11967-21cut10:50:142
1268299190,18cyclictest0-21swapper/209:18:252
12679991918,1cyclictest0-21swapper/110:32:111
12679991916,2cyclictest3182-21tail10:25:181
1267999190,1cyclictest6118-21diskmemload10:23:361
12672991917,1cyclictest3121-21perl10:25:170
12686991814,3cyclictest3425-21kworker/3:009:30:333
1268299183,6cyclictest0-21swapper/210:00:132
1268299183,3cyclictest0-21swapper/210:57:332
1267999180,18cyclictest0-21swapper/110:38:061
1267999180,17cyclictest0-21swapper/109:20:531
12672991818,0cyclictest0-21swapper/011:12:370
12672991817,1cyclictest0-21swapper/010:13:390
12672991814,4cyclictest5060-21apache211:30:300
12682991714,2cyclictest6514-21aten2_r7power_c11:45:142
12682991714,2cyclictest4619-21aten2_r7power_v11:05:152
1268299171,1cyclictest141rcu_preempt10:42:272
1268299170,1cyclictest28535-21ssh11:19:392
12679991716,1cyclictest0-21swapper/111:39:061
1267999170,1cyclictest0-21swapper/112:26:011
1267999170,16cyclictest0-21swapper/111:15:381
1267299175,10cyclictest6118-21diskmemload11:50:000
1268699162,9cyclictest0-21swapper/309:15:133
1268699161,14cyclictest0-21swapper/308:35:133
1268699160,3cyclictest0-21swapper/311:14:243
1268299162,8cyclictest0-21swapper/211:55:132
12679991616,0cyclictest0-21swapper/111:51:351
12679991614,1cyclictest0-21swapper/111:43:351
12679991613,2cyclictest0-21swapper/107:20:181
12672991614,1cyclictest215092sleep009:38:140
12686991514,1cyclictest0-21swapper/312:25:073
12686991512,2cyclictest23715-21tr09:20:153
1268299153,11cyclictest23743-21sensors11:35:222
1267999159,5cyclictest24400-21taskset10:18:501
1267999150,1cyclictest0-21swapper/107:35:141
1267999150,15cyclictest0-21swapper/111:47:581
1267299156,8cyclictest8125-21munin-run09:50:000
12672991513,1cyclictest1565-21aten2_r7power_p10:05:140
1268699146,4cyclictest0-21swapper/311:21:513
12686991413,1cyclictest0-21swapper/308:05:163
12686991411,2cyclictest28362-21grep10:20:253
12686991410,3cyclictest30483-21grep11:00:263
12686991410,3cyclictest24747-21cron07:35:003
1268299148,5cyclictest7343-21ssh12:05:002
1268299146,7cyclictest21878-21ssh12:13:152
1268299141,4cyclictest0-21swapper/209:54:532
12682991411,2cyclictest0-21swapper/212:21:212
12682991410,3cyclictest18080-21grep08:25:262
12682991410,3cyclictest15456-21cron09:35:002
1267999147,6cyclictest0-21swapper/111:28:411
1267999142,10cyclictest38150irq/131-snd_hda08:50:131
1267999141,12cyclictest6118-21diskmemload10:40:261
1267999141,11cyclictest31051-21wc07:45:211
12679991410,3cyclictest29072-21grep07:40:271
12679991410,2cyclictest5181-21sort11:25:001
1267999140,1cyclictest0-21swapper/111:11:001
1267299149,2cyclictest13-21ksoftirqd/010:55:120
1267299145,8cyclictest12668-21cyclictest10:18:540
1267299144,6cyclictest5060-21apache210:34:120
1267299141,9cyclictest22934-21idleruntime-cro09:20:000
12672991412,2cyclictest13-21ksoftirqd/010:35:130
12672991410,3cyclictest25134-21idleruntime-cro12:35:010
1267299140,2cyclictest0-21swapper/009:59:360
1268699139,3cyclictest32001-21ssh12:00:153
1268699139,3cyclictest22158-21kworker/3:111:54:233
1268699133,3cyclictest1075-21ls09:25:263
12686991312,1cyclictest3425-21kworker/3:010:07:533
12686991310,2cyclictest29465-21sort08:50:173
12686991310,2cyclictest26081-21cat10:20:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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