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2026-07-08 - 06:49

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 792 highest latencies:
System rack9slot4s (updated Wed Jul 08, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213809912621221,38cyclictest26809-21kworker/0:019:27:330
209672591544,32sleep00-21swapper/019:21:120
212802508464,29sleep10-21swapper/119:24:311
21381999183,5cyclictest0-21swapper/119:27:331
139732850,7sleep12138199cyclictest21:55:121
97252640,4sleep0111rcuc/023:10:010
183322450,7sleep12138199cyclictest20:40:141
183322450,7sleep12138199cyclictest20:40:141
21380993910,13cyclictest2225-21dbus-daemon23:33:460
21381993619,6cyclictest22-21ksoftirqd/123:36:381
33312351,31sleep13332-21cron00:17:001
2138199356,11cyclictest3286-21runrttasks22:12:341
2138099356,17cyclictest6395-21fschecks_count23:00:150
2138099351,11cyclictest81rcu_preempt20:09:120
49262341,4sleep15004-21hddtemp_smartct21:30:181
244632341,29sleep12695-21snmpd23:47:421
21381993417,5cyclictest40250irq/92-i91522:45:121
21381993412,7cyclictest0-21swapper/120:56:581
2138099342,16cyclictest17159-21python20:35:270
21380993414,7cyclictest27906-21grep23:55:280
2138099341,21cyclictest11429-21taskset23:14:140
2138099341,11cyclictest81rcu_preempt20:33:120
2138199322,16cyclictest11896-21munin-run21:50:011
2138099329,10cyclictest0-21swapper/020:55:420
2138099328,10cyclictest20551-21tr22:10:260
2138099324,4cyclictest81rcu_preempt21:20:220
21380993213,6cyclictest2400-21/usr/sbin/munin22:50:140
34682310,3sleep13472-21ntp_states21:25:261
249342313,4sleep081rcu_preempt23:50:130
235462311,3sleep023759-21iostat19:30:030
21381993113,6cyclictest3286-21runrttasks21:17:231
21380993121,6cyclictest7639-21wget00:30:110
21380993112,6cyclictest5541-21munin-run00:25:010
129922311,25sleep112996-21irqstats20:25:181
271412301,5sleep10-21swapper/121:03:331
2138199304,11cyclictest6590-21munin-run20:10:001
2138199302,6cyclictest3286-21runrttasks23:01:091
2138199301,26cyclictest0-21swapper/119:34:321
2138099306,12cyclictest21169-21unixbench_singl20:45:310
2138099303,24cyclictest0-21swapper/023:25:100
2138099303,14cyclictest0-21swapper/000:35:450
2138099302,15cyclictest23264-21df_inode23:45:140
2138099301,4cyclictest81rcu_preempt19:56:010
154772301,5sleep00-21swapper/021:58:310
109782301,5sleep10-21swapper/100:38:161
96342291,5sleep00-21swapper/021:41:150
78732291,5sleep10-21swapper/121:37:401
320782291,5sleep10-21swapper/100:08:401
315412291,5sleep10-21swapper/119:50:021
290952291,5sleep10-21swapper/121:09:231
231492291,4sleep10-21swapper/120:51:151
225672291,5sleep00-21swapper/023:42:300
2138199291,4cyclictest81rcu_preempt20:04:451
2138199291,4cyclictest81rcu_preempt00:49:201
2138099299,16cyclictest18292chrt22:48:150
2138099297,11cyclictest0-21swapper/022:36:360
2138099293,12cyclictest0-21swapper/019:45:170
2138099292,14cyclictest0-21swapper/022:20:280
2138099292,14cyclictest0-21swapper/021:36:340
2138099292,13cyclictest26745-21ntp_states19:35:250
2138099291,4cyclictest81rcu_preempt21:07:390
2138099291,15cyclictest6805-21/usr/sbin/munin20:10:120
2138099291,15cyclictest30918-21/usr/sbin/munin22:40:120
21380992911,5cyclictest15631-21http_loadtime00:50:170
21380992911,5cyclictest0-21swapper/022:32:170
21380992910,5cyclictest28824-21python19:40:270
21132291,5sleep10-21swapper/121:22:201
150052291,5sleep00-21swapper/023:22:080
120372291,5sleep00-21swapper/020:22:580
70282281,5sleep10-21swapper/100:26:111
51932281,5sleep15347-21awk22:55:301
51012281,5sleep10-21swapper/100:20:401
326602281,5sleep00-21swapper/021:17:200
321542281,5sleep10-21swapper/122:40:421
310452281,5sleep10-21swapper/119:46:201
284422281,5sleep10-21swapper/122:31:161
227982281,5sleep10-21swapper/122:16:221
226942281,4sleep10-21swapper/123:43:511
215292281,5sleep10-21swapper/120:48:551
2138199286,4cyclictest81rcu_preempt00:14:401
2138199285,4cyclictest81rcu_preempt23:09:031
2138199284,8cyclictest29650-21memory22:35:211
2138199284,8cyclictest16743-21iostat_ios20:35:201
2138199284,8cyclictest16104-21diskstats22:00:151
2138199284,8cyclictest0-21swapper/122:27:491
2138199284,4cyclictest81rcu_preempt23:13:321
2138199284,15cyclictest0-21swapper/120:33:411
2138199283,4cyclictest81rcu_preempt21:10:061
2138199282,4cyclictest81rcu_preempt20:11:241
2138199281,4cyclictest81rcu_preempt23:50:591
2138099287,4cyclictest40250irq/92-i91521:50:110
2138099282,14cyclictest0-21swapper/022:09:540
2138099282,13cyclictest3504-21/usr/sbin/munin21:25:270
2138099282,13cyclictest12880-21perl20:25:150
2138099281,4cyclictest81rcu_preempt23:37:060
2138099281,4cyclictest81rcu_preempt00:06:130
2138099281,15cyclictest5699-21/usr/sbin/munin00:25:120
2138099281,14cyclictest8719-21/usr/sbin/munin20:15:130
2138099281,13cyclictest21788-21fschecks_count22:15:170
2138099281,13cyclictest16612-21grep22:00:240
168952281,5sleep10-21swapper/123:27:181
132722281,5sleep10-21swapper/123:18:511
131152281,5sleep00-21swapper/023:17:110
90562271,5sleep10-21swapper/100:32:471
7852271,5sleep00-21swapper/019:54:460
300242271,4sleep00-21swapper/000:01:470
292642271,5sleep10-21swapper/119:42:201
25092271,4sleep10-21swapper/119:57:461
2138199276,4cyclictest81rcu_preempt23:55:561
21381992717,6cyclictest28973-21tune2fs00:00:171
2138199271,4cyclictest81rcu_preempt23:33:181
21381992711,5cyclictest81rcu_preempt19:35:121
21381992711,12cyclictest0-21swapper/120:15:281
2138099272,12cyclictest26330-21cut21:00:220
2138099271,14cyclictest14113-21/usr/sbin/munin00:45:260
2138099271,13cyclictest4979-21taskset22:55:250
2138099271,13cyclictest26321-21ls22:25:300
2138099271,13cyclictest19191-21sort20:40:290
2138099271,13cyclictest19191-21sort20:40:280
2138099271,13cyclictest12258-21/usr/sbin/munin00:40:260
2138099271,13cyclictest11565-21gdbus20:50:200
2138099271,12cyclictest4704-21cron20:05:000
164802271,5sleep10-21swapper/100:51:181
148712271,5sleep10-21swapper/123:20:461
135302271,4sleep10-21swapper/121:52:451
37032261,5sleep10-21swapper/122:52:051
2138199264,4cyclictest81rcu_preempt22:20:051
2138199261,3cyclictest81rcu_preempt00:44:321
2138099269,5cyclictest6029-21taskset21:32:590
2138099269,5cyclictest30613-21chrt21:10:340
2138099261,14cyclictest0-21swapper/021:48:560
2138099261,13cyclictest3572-21taskset00:19:280
2138199252,4cyclictest81rcu_preempt22:05:291
21381992517,5cyclictest22-21ksoftirqd/120:24:011
21381992416,5cyclictest8721-21fschecks_time21:40:161
2138099241,11cyclictest505-21grep00:10:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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