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2026-05-18 - 23:28

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 Mon May 18, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3048029279,9sleep00-21swapper/007:06:180
3042029177,9sleep20-21swapper/207:05:312
3070228666,16sleep10-21swapper/107:09:121
3071428169,8sleep30-21swapper/307:09:223
3085699270,25cyclictest0-21swapper/009:12:110
3086299250,24cyclictest0-21swapper/210:26:552
30862992423,1cyclictest0-21swapper/211:00:332
3085699242,19cyclictest0-21swapper/009:59:100
3086299230,23cyclictest0-21swapper/211:55:192
3086299230,22cyclictest0-21swapper/211:54:002
30859992318,4cyclictest477-21rs:main1
3086599225,2cyclictest24092-21diskmemload10:58:033
30862992221,1cyclictest0-21swapper/210:12:332
3086299220,21cyclictest0-21swapper/210:46:492
3085999220,2cyclictest0-21swapper/112:19:031
30856992221,1cyclictest0-21swapper/009:35:470
3086299211,1cyclictest141rcu_preempt11:28:172
3086299210,2cyclictest0-21swapper/212:39:102
3086299210,18cyclictest0-21swapper/209:40:502
30859992121,0cyclictest0-21swapper/110:07:251
3085999210,1cyclictest0-21swapper/110:55:411
3085699210,1cyclictest0-21swapper/012:05:440
3086599201,18cyclictest0-21swapper/308:55:143
3086599200,1cyclictest0-21swapper/309:45:023
3086299200,20cyclictest0-21swapper/210:39:142
3086299200,20cyclictest0-21swapper/209:12:112
3085999200,1cyclictest0-21swapper/110:35:391
30856992017,2cyclictest13-21ksoftirqd/010:08:470
3085699200,19cyclictest0-21swapper/011:34:210
30865991915,4cyclictest21113-21kworker/3:112:33:223
3086599190,2cyclictest0-21swapper/309:56:063
3086299192,17cyclictest0-21swapper/209:55:322
30862991917,1cyclictest0-21swapper/211:34:202
3086299190,1cyclictest0-21swapper/211:20:022
3086299190,19cyclictest0-21swapper/209:18:312
3085999190,1cyclictest2655-21smart_sda07:15:261
3085999190,1cyclictest0-21swapper/111:49:551
3085999190,18cyclictest0-21swapper/110:47:461
30865991815,2cyclictest21113-21kworker/3:112:25:413
3086299181,14cyclictest0-21swapper/212:05:132
3086299181,10cyclictest0-21swapper/208:40:122
3086299180,18cyclictest0-21swapper/211:36:142
30859991817,0cyclictest0-21swapper/111:14:591
3085999181,1cyclictest0-21swapper/110:01:401
3085999180,1cyclictest0-21swapper/112:23:481
3085999180,17cyclictest0-21swapper/112:08:111
30856991817,1cyclictest0-21swapper/009:45:370
3085699180,18cyclictest0-21swapper/011:46:290
3085699180,17cyclictest0-21swapper/010:20:530
3085699180,12cyclictest0-21swapper/010:39:420
30862991716,1cyclictest0-21swapper/211:46:292
3086299170,17cyclictest0-21swapper/210:52:552
3085999176,10cyclictest0-21swapper/111:30:141
30856991715,1cyclictest0-21swapper/011:18:210
3085699170,17cyclictest0-21swapper/011:24:470
30865991614,2cyclictest21113-21kworker/3:112:37:523
30865991614,1cyclictest12058-21perf10:24:543
30865991611,3cyclictest17074-21grep11:40:123
30865991611,3cyclictest17074-21grep11:40:113
30862991612,3cyclictest0-21swapper/212:32:482
3086299160,16cyclictest0-21swapper/211:19:122
3086299160,15cyclictest0-21swapper/209:31:372
3086299160,0cyclictest0-21swapper/211:05:152
3085699160,15cyclictest0-21swapper/010:45:320
3086599155,3cyclictest1549-21apache_volume09:35:133
3086299152,7cyclictest0-21swapper/209:22:372
3086299152,7cyclictest0-21swapper/209:22:372
3086299152,13cyclictest0-21swapper/211:42:182
3086299152,13cyclictest0-21swapper/211:42:172
3086299150,15cyclictest0-21swapper/209:35:462
3085999157,5cyclictest8455-21apache212:01:221
30859991511,3cyclictest4090-21wc09:55:181
3085699150,1cyclictest141rcu_preempt11:38:150
146002150,0sleep00-21swapper/011:00:110
3086599144,3cyclictest225-21systemd-journal08:37:493
30865991410,3cyclictest26418-21wc09:10:273
30865991410,3cyclictest11611-21grep11:55:273
3086599140,13cyclictest22254-21sed07:55:263
3086299149,4cyclictest18811-21grep12:00:172
3086299140,8cyclictest0-21swapper/207:15:152
3086299140,4cyclictest0-21swapper/210:24:452
3086299140,2cyclictest0-21swapper/212:26:282
3086299140,14cyclictest0-21swapper/211:12:372
30859991413,1cyclictest0-21swapper/110:32:221
30859991413,0cyclictest0-21swapper/110:44:041
30859991412,2cyclictest0-21swapper/109:25:511
30859991412,1cyclictest0-21swapper/110:24:441
30859991410,3cyclictest25139-21ssh11:25:161
3085999140,13cyclictest11507-21cat08:40:251
3085699146,7cyclictest24092-21diskmemload12:23:310
3085699140,3cyclictest0-21swapper/009:54:360
3085699140,13cyclictest0-21swapper/012:35:150
3086599139,3cyclictest31200-21cut08:15:163
3086599139,2cyclictest15308-21cat11:20:003
3086599132,9cyclictest537-21snmpd10:48:173
3086599132,4cyclictest0-21swapper/309:25:153
30865991312,1cyclictest21113-21kworker/3:112:20:423
30865991310,2cyclictest7049-21sed10:35:263
30865991310,2cyclictest18055-21rm12:00:143
30865991310,2cyclictest1608-21grep11:30:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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