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2026-08-05 - 17:26

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 all highest latencies:
System rack9slot4s (updated Wed Aug 05, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16539911251113,10cyclictest14603-21kworker/0:307:29:460
14672516471,30sleep00-21swapper/007:23:400
12982505458,32sleep10-21swapper/107:21:531
165499141132,6cyclictest0-21swapper/107:29:461
1267421210,2sleep012672-21wc12:15:260
74782471,34sleep12021-21cgmanager10:36:371
165399419,20cyclictest2225-21dbus-daemon10:36:310
1653993924,5cyclictest3-21ksoftirqd/012:54:370
1653993923,6cyclictest3-21ksoftirqd/012:08:530
1653993923,6cyclictest3-21ksoftirqd/009:35:570
1653993923,5cyclictest3-21ksoftirqd/008:19:310
1653993915,8cyclictest3-21ksoftirqd/009:22:420
1653993821,6cyclictest3-21ksoftirqd/009:08:360
1653993816,7cyclictest3-21ksoftirqd/008:06:290
165399378,7cyclictest353-21udevd11:54:040
1653993722,5cyclictest3-21ksoftirqd/008:49:250
1653993721,6cyclictest3-21ksoftirqd/008:51:100
1653993721,6cyclictest3-21ksoftirqd/008:27:310
1653993721,5cyclictest3-21ksoftirqd/009:45:020
1653993614,7cyclictest3-21ksoftirqd/010:01:350
1653993612,8cyclictest3-21ksoftirqd/009:13:460
165499352,16cyclictest6691-21iostat_ios12:00:221
165399359,14cyclictest2438-21ntpdc10:25:230
1653993521,5cyclictest3-21ksoftirqd/008:00:210
1653993514,7cyclictest3-21ksoftirqd/010:56:550
1653993513,7cyclictest3-21ksoftirqd/009:15:350
1653993512,7cyclictest3-21ksoftirqd/009:59:140
211532341,4sleep021162-21df_inode09:50:100
165399347,9cyclictest2225-21dbus-daemon10:42:140
165399345,18cyclictest0-21swapper/007:43:180
1653993413,7cyclictest3-21ksoftirqd/009:43:500
1653993411,8cyclictest1651-21cyclictest10:47:280
1653993316,7cyclictest27700-21grep10:05:300
1653993316,6cyclictest1354-21ls11:45:290
1653993311,7cyclictest3-21ksoftirqd/011:55:320
165399329,8cyclictest1651-21cyclictest12:20:120
165399326,7cyclictest2-21kthreadd11:39:130
1653993217,5cyclictest31984-21unixbench_multi11:40:290
1653993216,5cyclictest11363-21pidof08:35:010
1653993214,5cyclictest3701-21aten_r4power_vo10:30:140
1653993212,6cyclictest3-21ksoftirqd/007:31:410
165399321,19cyclictest24826-21/usr/sbin/munin12:50:010
1653993211,12cyclictest1651-21cyclictest12:03:040
1653993210,8cyclictest3-21ksoftirqd/008:20:450
1653993210,12cyclictest1651-21cyclictest11:32:050
160682321,28sleep016229-21perl11:00:160
107132321,27sleep110715-21irqstats10:45:201
316202311,5sleep10-21swapper/110:16:121
165499314,4cyclictest81rcu_preempt12:53:151
165499313,25cyclictest2743-21iostat_ios11:50:191
1654993120,7cyclictest14475-21munin-plugin-st09:00:011
165499311,4cyclictest81rcu_preempt09:22:421
165499311,4cyclictest81rcu_preempt08:06:291
165399319,8cyclictest3-21ksoftirqd/007:57:500
165399319,12cyclictest1651-21cyclictest12:10:460
165399317,5cyclictest0-21swapper/009:00:000
165399317,12cyclictest14603-21kworker/0:307:49:280
1653993114,5cyclictest32289-21cpu10:20:120
1653993112,6cyclictest19352-21cron11:10:010
165399311,22cyclictest0-21swapper/012:26:430
1653993110,7cyclictest3-21ksoftirqd/011:24:050
149412311,5sleep10-21swapper/109:03:211
95592301,5sleep10-21swapper/110:40:561
49822301,5sleep10-21swapper/110:31:411
165499301,4cyclictest81rcu_preempt10:56:551
165499301,4cyclictest81rcu_preempt09:39:151
165399308,8cyclictest3-21ksoftirqd/011:15:310
165399308,8cyclictest3-21ksoftirqd/008:11:260
1653993014,12cyclictest2225-21dbus-daemon10:19:350
1653993010,7cyclictest3-21ksoftirqd/012:42:520
104612300,8sleep1165499cyclictest12:10:191
68092291,5sleep10-21swapper/107:58:101
46872291,5sleep10-21swapper/107:42:191
34932291,5sleep10-21swapper/107:33:251
165499295,4cyclictest81rcu_preempt12:08:341
165499294,19cyclictest27120-21iostat_ios10:05:201
165499294,19cyclictest21469-21iostat_ios09:50:161
1654992917,9cyclictest22-21ksoftirqd/109:29:551
165499291,4cyclictest81rcu_preempt10:01:351
165499291,4cyclictest81rcu_preempt09:45:491
165499291,4cyclictest81rcu_preempt09:15:351
1654992913,9cyclictest17936-21diskstats11:05:161
165399299,6cyclictest3-21ksoftirqd/012:36:210
165399298,7cyclictest3286-21runrttasks08:41:300
165399298,6cyclictest3-21ksoftirqd/010:13:310
1653992918,9cyclictest0-21swapper/009:33:460
1653992914,5cyclictest21121-21runrttasks11:13:560
1653992914,5cyclictest0-21swapper/009:26:590
1653992913,8cyclictest0-21swapper/010:50:280
116402291,5sleep10-21swapper/108:36:321
99072281,5sleep10-21swapper/108:22:521
90402281,5sleep10-21swapper/108:15:251
88222281,5sleep10-21swapper/108:14:411
72042281,5sleep10-21swapper/108:00:361
282972281,5sleep10-21swapper/111:30:311
236972281,23sleep123706-21iostat_ios12:45:201
189922281,5sleep00-21swapper/012:33:250
170492281,5sleep10-21swapper/111:00:371
1654992816,7cyclictest22271-21ps11:15:291
165499281,4cyclictest81rcu_preempt09:59:141
165499281,4cyclictest81rcu_preempt09:43:501
165499281,23cyclictest18834-21cron09:35:001
165399289,6cyclictest3-21ksoftirqd/007:50:070
165399282,17cyclictest0-21swapper/007:36:240
165399282,17cyclictest0-21swapper/007:36:240
1653992813,4cyclictest2225-21dbus-daemon11:25:360
160742281,5sleep10-21swapper/109:12:101
151582281,5sleep10-21swapper/112:22:321
125652281,5sleep10-21swapper/108:44:341
58022271,4sleep10-21swapper/111:58:591
41652271,5sleep10-21swapper/107:38:331
41652271,5sleep10-21swapper/107:38:321
297652271,5sleep10-21swapper/110:11:291
206382271,5sleep10-21swapper/112:36:021
191152271,4sleep10-21swapper/112:34:421
165499274,3cyclictest81rcu_preempt10:26:451
1654992719,5cyclictest16757-21grep12:25:291
1654992717,6cyclictest1173-21find11:45:271
165499271,4cyclictest81rcu_preempt09:05:221
1654992712,11cyclictest0-21swapper/112:15:261
1653992711,8cyclictest0-21swapper/009:00:270
136682271,5sleep10-21swapper/108:53:091
13362271,5sleep10-21swapper/110:24:051
115422271,5sleep00-21swapper/008:35:300
104642271,5sleep10-21swapper/108:27:111
226582261,4sleep10-21swapper/112:42:211
165499264,4cyclictest81rcu_preempt11:38:121
165499262,4cyclictest81rcu_preempt07:50:061
1654992613,7cyclictest11565-21gdbus11:10:221
165499253,4cyclictest81rcu_preempt10:52:061
1654992515,6cyclictest26693-21runrttasks11:28:091
1654992417,4cyclictest22-21ksoftirqd/111:20:311
1654992416,4cyclictest22-21ksoftirqd/108:33:361
1654992414,6cyclictest5121-21runrttasks07:45:211
165499241,14cyclictest0-21swapper/108:46:591
1654992314,6cyclictest30802-21runrttasks11:40:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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