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2026-06-30 - 08:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 376 highest latencies:
System rack9slot4s (updated Tue Jun 30, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33589911621152,7cyclictest0-21swapper/119:25:561
31532587541,31sleep00-21swapper/019:23:330
31712561518,29sleep10-21swapper/119:23:451
335799156131,22cyclictest0-21swapper/019:25:570
238882910,4sleep0335799cyclictest20:15:250
213202800,2sleep121322-21which23:00:251
290652480,4sleep0111rcuc/023:20:290
228972440,7sleep00-21swapper/000:30:290
3358994225,12cyclictest16960-21/usr/sbin/munin21:25:321
281522420,2sleep128153-21iostat00:45:201
3358994027,9cyclictest2695-21snmpd20:02:221
3357993922,6cyclictest3-21ksoftirqd/000:12:410
3357993822,6cyclictest3-21ksoftirqd/021:18:120
3357993822,5cyclictest3-21ksoftirqd/021:42:530
3357993722,6cyclictest3-21ksoftirqd/020:28:380
3357993721,6cyclictest3-21ksoftirqd/021:00:060
3357993721,6cyclictest3-21ksoftirqd/020:04:230
3357993720,6cyclictest3-21ksoftirqd/023:28:460
3357993720,6cyclictest3-21ksoftirqd/000:27:530
3357993621,5cyclictest3-21ksoftirqd/022:21:240
3357993621,4cyclictest3-21ksoftirqd/000:21:150
3357993620,6cyclictest3-21ksoftirqd/021:55:520
3357993620,6cyclictest3-21ksoftirqd/020:22:540
3357993619,6cyclictest3-21ksoftirqd/023:41:530
335799354,19cyclictest0-21swapper/019:42:090
3357993519,6cyclictest3-21ksoftirqd/023:38:510
3357993519,6cyclictest3-21ksoftirqd/020:42:160
3357993518,6cyclictest3-21ksoftirqd/023:48:510
3357993518,6cyclictest3-21ksoftirqd/021:48:470
64892340,2sleep06487-21ntp_states20:55:260
335899344,26cyclictest16784-21cat21:24:561
3357993420,5cyclictest3-21ksoftirqd/022:47:480
3357993418,6cyclictest3-21ksoftirqd/023:16:310
3357993418,5cyclictest3-21ksoftirqd/023:13:380
3357993417,6cyclictest3-21ksoftirqd/019:34:020
335899334,6cyclictest81rcu_preempt20:58:011
335899331,28cyclictest2221-21cron22:29:591
335799335,25cyclictest8898-21cat22:29:550
3357993319,4cyclictest3-21ksoftirqd/019:49:150
3357993318,5cyclictest3-21ksoftirqd/020:13:420
3357993315,6cyclictest11565-21gdbus23:02:290
301172331,4sleep011564-21packagekitd20:33:040
110742331,5sleep10-21swapper/121:09:221
335799329,8cyclictest3-21ksoftirqd/022:16:250
335799322,7cyclictest11565-21gdbus20:48:050
335799322,4cyclictest13759-21cpuspeed_turbos19:50:120
3357993218,4cyclictest3-21ksoftirqd/023:33:120
3357993217,5cyclictest3-21ksoftirqd/020:37:380
3357993216,5cyclictest3-21ksoftirqd/022:52:340
3357993215,6cyclictest3-21ksoftirqd/021:33:410
3357993212,6cyclictest3-21ksoftirqd/022:34:120
3357993211,7cyclictest3-21ksoftirqd/023:58:100
182282320,9sleep0335799cyclictest21:25:310
335899315,4cyclictest81rcu_preempt23:32:511
3358993122,5cyclictest20004-21grep21:30:281
3358993115,12cyclictest22-21ksoftirqd/119:35:241
335799317,8cyclictest0-21swapper/022:01:330
335799317,13cyclictest40250irq/92-i91500:00:220
3357993117,5cyclictest3-21ksoftirqd/022:44:590
3357993117,5cyclictest3-21ksoftirqd/019:57:540
3357993117,4cyclictest3-21ksoftirqd/000:35:020
3357993114,13cyclictest2221-21cron00:45:000
107062314,5sleep00-21swapper/021:05:340
335899305,21cyclictest29068-21awk23:20:291
335899303,22cyclictest0-21swapper/120:10:241
335899302,3cyclictest81rcu_preempt23:37:361
335899302,3cyclictest40250irq/92-i91522:06:121
335899301,4cyclictest81rcu_preempt22:16:251
335799307,8cyclictest3-21ksoftirqd/023:05:580
335799307,8cyclictest3-21ksoftirqd/000:16:530
335799306,8cyclictest3-21ksoftirqd/021:22:290
335799306,7cyclictest28086-21watchsnmpd21:55:000
335799306,5cyclictest0-21swapper/020:05:150
335799305,5cyclictest0-21swapper/022:06:120
335799302,8cyclictest0-21swapper/019:35:290
3357993018,7cyclictest21006-21diskstats21:35:150
3357993016,8cyclictest29734-21diskstats00:50:150
3357993012,6cyclictest29271-21cron00:50:000
3357993011,5cyclictest3-21ksoftirqd/022:14:250
273722301,5sleep10-21swapper/123:16:351
200532301,5sleep00-21swapper/022:58:410
162752301,5sleep10-21swapper/122:48:231
149392301,5sleep10-21swapper/119:51:441
125322301,5sleep10-21swapper/122:38:411
335899294,5cyclictest81rcu_preempt21:00:241
335899293,19cyclictest8999-21diskstats23:55:141
3358992921,5cyclictest30574-21aten_r4power_vo20:35:111
335899291,4cyclictest81rcu_preempt21:45:441
335899291,4cyclictest81rcu_preempt20:23:261
3358992913,8cyclictest16602-21/usr/sbin/munin22:50:331
3358992911,4cyclictest81rcu_preempt00:30:231
335899290,4cyclictest81rcu_preempt00:14:561
3357992915,4cyclictest3-21ksoftirqd/000:06:290
3357992913,4cyclictest3-21ksoftirqd/023:52:520
296112291,5sleep10-21swapper/121:56:341
257892291,5sleep10-21swapper/123:14:381
243032291,5sleep10-21swapper/121:44:541
175332291,5sleep10-21swapper/100:15:491
13852291,4sleep10-21swapper/120:42:401
127752291,5sleep10-21swapper/121:12:291
46482281,4sleep10-21swapper/123:43:341
335899287,4cyclictest81rcu_preempt21:55:011
335899286,4cyclictest81rcu_preempt22:03:461
335899284,8cyclictest10894-21diskstats00:00:131
335899284,18cyclictest13081-21iostat_ios00:05:261
335899284,17cyclictest7655-21ntp_states23:50:241
3358992821,4cyclictest22-21ksoftirqd/119:35:011
3358992818,5cyclictest24833-21cat00:35:291
3358992811,13cyclictest22-21ksoftirqd/119:49:031
335899280,4cyclictest81rcu_preempt23:05:571
335799281,7cyclictest12370-21cat21:10:290
3357992814,4cyclictest3-21ksoftirqd/022:38:250
299302281,5sleep10-21swapper/120:31:091
245642281,5sleep10-21swapper/120:19:051
110702281,5sleep10-21swapper/119:40:341
106412281,5sleep10-21swapper/122:33:351
62732271,5sleep10-21swapper/123:45:561
335899274,17cyclictest20297-21diskstats00:25:151
335899272,12cyclictest0-21swapper/122:21:591
3358992720,4cyclictest20112-21processes20:05:261
3358992717,6cyclictest22-21ksoftirqd/100:51:311
3358992717,6cyclictest21428-21ls21:35:231
335899271,4cyclictest81rcu_preempt00:42:421
335899271,21cyclictest18768-21diskstats22:55:151
3357992710,4cyclictest0-21swapper/020:50:360
28652271,4sleep10-21swapper/122:11:081
335899264,4cyclictest81rcu_preempt20:51:181
335899264,4cyclictest81rcu_preempt19:58:001
335899263,17cyclictest18427-21diskstats00:20:171
335899262,17cyclictest13473-21df_inode21:15:151
335899261,3cyclictest81rcu_preempt23:28:111
335899261,11cyclictest13728-21wc22:40:261
3358992518,4cyclictest22-21ksoftirqd/120:45:101
3358992518,4cyclictest22-21ksoftirqd/120:25:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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