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2026-08-29 - 10:52

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 Sat Aug 29, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
61859911131092,18cyclictest0-21swapper/119:35:001
58872565520,30sleep10-21swapper/119:22:281
52862494441,32sleep00-21swapper/019:20:260
2373521040,5sleep023736-21munin-plugin-st20:10:000
2373521040,5sleep023736-21munin-plugin-st20:10:000
61849910180,18cyclictest10641-21date19:35:000
6184994023,6cyclictest3-21ksoftirqd/020:25:260
6184994022,7cyclictest3-21ksoftirqd/000:25:160
6184993924,4cyclictest3-21ksoftirqd/020:45:280
6184993822,6cyclictest3-21ksoftirqd/023:08:310
6184993822,5cyclictest3-21ksoftirqd/023:50:290
6184993821,6cyclictest3-21ksoftirqd/022:44:400
294932380,3sleep10-21swapper/120:25:001
618499379,13cyclictest2225-21dbus-daemon20:30:020
6184993721,6cyclictest3-21ksoftirqd/020:11:430
6184993721,5cyclictest3-21ksoftirqd/021:59:060
6184993721,5cyclictest3-21ksoftirqd/021:05:030
6184993720,6cyclictest3-21ksoftirqd/000:10:400
6184993714,7cyclictest3-21ksoftirqd/020:24:080
618499371,13cyclictest0-21swapper/023:45:280
618499371,13cyclictest0-21swapper/023:45:270
171872371,31sleep117268-21users21:15:281
6922350,5sleep0111rcuc/023:25:180
6184993520,5cyclictest3-21ksoftirqd/020:02:340
6184993520,5cyclictest3-21ksoftirqd/000:53:570
6184993518,6cyclictest3-21ksoftirqd/022:54:500
6184993518,6cyclictest3-21ksoftirqd/000:47:390
618499351,21cyclictest26432-21munin-run00:35:000
316452351,5sleep131732-21sensors_temp23:20:281
6184993419,5cyclictest3-21ksoftirqd/020:19:530
6184993418,5cyclictest3-21ksoftirqd/022:23:240
6184993418,5cyclictest3-21ksoftirqd/021:31:430
6184993418,4cyclictest3-21ksoftirqd/019:46:580
6184993417,6cyclictest3-21ksoftirqd/023:15:470
6184993413,6cyclictest3-21ksoftirqd/021:15:280
177522341,28sleep111565-21gdbus19:51:381
116092341,5sleep111564-21packagekitd22:28:441
6184993318,4cyclictest3-21ksoftirqd/020:42:260
618499331,13cyclictest0-21swapper/022:45:200
180072331,28sleep118041-21hddtemp_smartct22:45:191
113182331,27sleep111401-21memory19:35:211
6185993220,7cyclictest9673-21sed20:55:331
6185993213,15cyclictest5169-21ntpq22:10:221
618499327,13cyclictest3500-21python22:05:280
618499322,9cyclictest8043-21munin-run19:30:000
618499322,18cyclictest4595-21ls22:10:110
6184993218,5cyclictest3-21ksoftirqd/019:39:240
6184993217,5cyclictest3-21ksoftirqd/019:57:090
34672321,9sleep10-21swapper/123:31:081
309832321,5sleep130987-21irqstats00:45:191
618599314,20cyclictest12907-21diskstats19:40:141
618499318,12cyclictest40250irq/92-i91521:00:190
618499314,4cyclictest29217-21taskset00:40:230
618499311,8cyclictest0-21swapper/021:45:200
6184993117,4cyclictest3-21ksoftirqd/021:39:200
6184993116,4cyclictest3-21ksoftirqd/022:57:350
6184993115,6cyclictest3-21ksoftirqd/021:10:430
6184993114,6cyclictest3-21ksoftirqd/020:50:230
6184993114,6cyclictest3-21ksoftirqd/000:16:420
141272311,4sleep00-21swapper/019:42:580
618599304,4cyclictest81rcu_preempt00:07:501
618599304,17cyclictest0-21swapper/123:35:301
618599301,5cyclictest81rcu_preempt20:55:001
6185993011,15cyclictest2585-21sendmail20:40:011
618599300,4cyclictest81rcu_preempt23:05:521
618499301,8cyclictest490-21munin-node22:00:100
6184993016,5cyclictest3-21ksoftirqd/022:18:480
6184993016,5cyclictest3-21ksoftirqd/022:18:480
6184993016,4cyclictest3-21ksoftirqd/020:39:060
6184993016,4cyclictest3-21ksoftirqd/000:39:050
6184993015,5cyclictest3-21ksoftirqd/000:08:030
6184993014,6cyclictest26776-21runrttasks21:41:110
6184993011,6cyclictest3-21ksoftirqd/023:42:150
618499301,15cyclictest12910-21python22:30:280
44912300,5sleep0618499cyclictest23:35:150
272302301,5sleep10-21swapper/120:17:281
226732301,5sleep10-21swapper/122:56:311
145842301,5sleep00-21swapper/022:35:240
618599295,4cyclictest81rcu_preempt00:53:221
618599292,24cyclictest0-21swapper/122:05:121
6185992916,10cyclictest22-21ksoftirqd/123:55:121
6185992915,11cyclictest22-21ksoftirqd/120:00:121
6185992915,10cyclictest7281-21cat19:25:271
618599291,4cyclictest81rcu_preempt20:10:081
618599291,4cyclictest81rcu_preempt19:56:021
618599291,4cyclictest81rcu_preempt00:19:031
618599291,24cyclictest9953-21diskstats23:50:151
618599291,24cyclictest6929-21memory22:15:221
618599291,24cyclictest6929-21memory22:15:221
618599291,24cyclictest22718-21/usr/sbin/munin20:05:201
618599291,24cyclictest22718-21/usr/sbin/munin20:05:191
618599291,24cyclictest15527-21grep22:40:011
618499296,12cyclictest13712-21df00:00:140
6184992915,5cyclictest3-21ksoftirqd/023:59:320
6184992915,4cyclictest3-21ksoftirqd/023:24:120
6184992914,5cyclictest3-21ksoftirqd/023:04:590
37752291,5sleep00-21swapper/023:34:200
233642291,5sleep10-21swapper/121:35:001
193872291,5sleep10-21swapper/121:22:371
162682291,24sleep116351-21load22:40:201
618599287,5cyclictest40250irq/92-i91522:55:001
618599286,18cyclictest0-21swapper/120:40:171
618599285,4cyclictest81rcu_preempt21:12:241
618599284,4cyclictest81rcu_preempt00:23:351
618599284,18cyclictest23129-21diskstats00:25:151
618599283,11cyclictest0-21swapper/120:45:271
618599281,4cyclictest81rcu_preempt22:34:251
618599281,24cyclictest0-21swapper/100:04:261
618599281,13cyclictest17184-21/usr/sbin/munin00:10:231
618499289,15cyclictest30767-21chrt21:53:430
618499287,6cyclictest3-21ksoftirqd/021:21:130
6184992814,4cyclictest3-21ksoftirqd/021:25:570
6184992814,4cyclictest3-21ksoftirqd/020:59:370
618499281,14cyclictest16715-21/usr/sbin/munin19:50:150
306662281,5sleep10-21swapper/121:52:401
302522281,5sleep10-21swapper/123:17:041
299772281,5sleep10-21swapper/100:42:531
282662281,5sleep10-21swapper/100:39:461
282612281,5sleep00-21swapper/023:10:550
618599275,4cyclictest81rcu_preempt21:46:351
618599274,17cyclictest13074-21ntp_states21:05:231
618599273,4cyclictest1355-21/usr/sbin/munin22:00:251
618599273,3cyclictest81rcu_preempt21:25:091
618599272,21cyclictest0-21swapper/122:20:261
618599272,21cyclictest0-21swapper/120:31:591
6185992717,7cyclictest22-21ksoftirqd/123:00:131
6185992717,7cyclictest22-21ksoftirqd/119:45:261
618599271,4cyclictest81rcu_preempt21:55:211
618599270,4cyclictest81rcu_preempt20:25:121
282292271,5sleep10-21swapper/123:10:341
224482271,4sleep00-21swapper/000:22:440
15592271,5sleep10-21swapper/123:26:561
117262271,5sleep10-21swapper/121:01:151
72132261,5sleep10-21swapper/123:40:511
618599269,13cyclictest22-21ksoftirqd/121:35:151
618599263,8cyclictest25001-21diskstats00:30:141
6185992617,6cyclictest0-21swapper/123:48:361
6185992617,6cyclictest0-21swapper/123:48:351
268952261,4sleep10-21swapper/121:42:271
618499252,5cyclictest10822-21ntpdc22:25:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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