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2026-03-24 - 21:23

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 highest latencies:
System rack9slot4s (updated Tue Mar 24, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67219911971187,7cyclictest0-21swapper/107:27:161
67209911431112,17cyclictest0-21swapper/007:26:430
64242564518,31sleep00-21swapper/007:22:280
64172460417,29sleep10-21swapper/107:22:251
229532860,8sleep0672099cyclictest12:38:470
252422850,6sleep125244-21sort11:00:221
113262830,4sleep0111rcuc/010:12:350
121612740,4sleep0111rcuc/012:27:030
267392670,5sleep026714-21fschecks_time09:55:170
32652611,31sleep13388-21sed09:30:291
89522460,6sleep0672099cyclictest11:50:210
6720994422,5cyclictest3-21ksoftirqd/012:32:350
6720994323,5cyclictest3-21ksoftirqd/011:59:130
6720994323,5cyclictest3-21ksoftirqd/011:47:580
320742431,25sleep132087-21ntp_states10:00:261
6720994225,5cyclictest3-21ksoftirqd/012:04:230
6720994222,5cyclictest3-21ksoftirqd/012:09:540
6720994222,5cyclictest3-21ksoftirqd/010:51:110
6720994125,6cyclictest3-21ksoftirqd/012:45:300
6720994125,5cyclictest3-21ksoftirqd/011:00:230
6720994125,4cyclictest3-21ksoftirqd/009:35:010
6720994121,5cyclictest3-21ksoftirqd/012:21:140
6721994022,13cyclictest22-21ksoftirqd/110:27:311
6720994024,6cyclictest3-21ksoftirqd/010:49:430
6720994023,5cyclictest3-21ksoftirqd/008:27:500
6720994022,6cyclictest3-21ksoftirqd/012:52:280
672099401,36cyclictest0-21swapper/007:43:350
265042400,3sleep00-21swapper/009:20:550
6720993923,5cyclictest3-21ksoftirqd/009:37:420
188532391,34sleep118863-21ssh12:34:501
6720993823,4cyclictest3-21ksoftirqd/009:53:090
6720993822,6cyclictest3-21ksoftirqd/009:03:420
6720993822,5cyclictest3-21ksoftirqd/011:39:100
6720993822,5cyclictest3-21ksoftirqd/011:07:480
6720993822,5cyclictest3-21ksoftirqd/009:16:330
6720993820,6cyclictest3-21ksoftirqd/011:40:150
6720993812,5cyclictest258052sort08:10:290
672199371,15cyclictest0-21swapper/111:22:031
6720993723,12cyclictest0-21swapper/011:12:360
6720993722,5cyclictest3-21ksoftirqd/011:26:340
6720993722,5cyclictest3-21ksoftirqd/011:15:360
6720993722,5cyclictest3-21ksoftirqd/010:42:560
6720993722,5cyclictest3-21ksoftirqd/010:21:090
6720993722,5cyclictest3-21ksoftirqd/009:42:180
6720993722,5cyclictest3-21ksoftirqd/007:47:400
6720993720,6cyclictest3-21ksoftirqd/012:13:340
6720993712,13cyclictest1081-21tr10:35:250
301502374,6sleep122-21ksoftirqd/112:45:301
236422371,32sleep123656-21ssh09:18:501
672199367,3cyclictest14771-21diskmemload10:32:211
672199365,4cyclictest81rcu_preempt11:09:321
6720993621,5cyclictest3-21ksoftirqd/010:26:180
6720993621,5cyclictest3-21ksoftirqd/010:01:370
6720993621,5cyclictest3-21ksoftirqd/009:26:280
6720993620,6cyclictest3-21ksoftirqd/011:22:330
6720993616,5cyclictest3-21ksoftirqd/010:33:470
672199352,5cyclictest0-21swapper/109:55:351
672199352,29cyclictest0-21swapper/110:38:151
672099358,13cyclictest19866-21sh09:48:060
6720993519,5cyclictest3-21ksoftirqd/011:30:190
6720993514,5cyclictest3-21ksoftirqd/010:18:160
672199346,4cyclictest81rcu_preempt12:35:091
672199344,4cyclictest81rcu_preempt12:13:051
672199342,29cyclictest0-21swapper/110:16:161
672199341,6cyclictest29878-21ssh11:39:051
672199341,30cyclictest0-21swapper/112:53:361
672199341,30cyclictest0-21swapper/110:06:161
672199341,29cyclictest1420-21ssh09:29:351
672099346,4cyclictest81rcu_preempt09:11:580
6720993419,5cyclictest3-21ksoftirqd/012:17:570
6720993418,6cyclictest3-21ksoftirqd/010:06:220
274962340,4sleep0111rcuc/008:15:300
84312331,28sleep18449-21diskstats11:50:131
672199334,4cyclictest81rcu_preempt11:29:071
672199334,4cyclictest81rcu_preempt10:11:021
6721993326,4cyclictest15121-21ssh10:50:161
6721993323,6cyclictest14262-21/usr/sbin/munin11:55:291
672199332,27cyclictest0-21swapper/109:10:551
672199332,18cyclictest31453-21iostat11:40:181
6721993317,12cyclictest22-21ksoftirqd/109:54:391
672199331,5cyclictest0-21swapper/108:38:561
672199331,30cyclictest0-21swapper/108:23:371
672199331,29cyclictest40550irq/92-i91510:59:031
672199331,29cyclictest0-21swapper/112:27:361
672099336,4cyclictest81rcu_preempt10:55:040
672099333,15cyclictest17670-21memory07:50:230
6720993318,4cyclictest3-21ksoftirqd/012:42:250
6720993312,7cyclictest14760-21cron09:10:000
672199328,4cyclictest81rcu_preempt09:49:541
672199326,5cyclictest81rcu_preempt10:20:191
672199325,5cyclictest81rcu_preempt12:40:211
6721993217,12cyclictest22-21ksoftirqd/112:16:431
672199321,5cyclictest0-21swapper/109:05:161
672199321,4cyclictest81rcu_preempt09:22:341
672199321,4cyclictest4833-21ssh11:45:351
260372321,5sleep10-21swapper/108:11:271
187302321,5sleep118778-21ntp_states12:00:251
672199314,4cyclictest81rcu_preempt12:23:141
672199312,4cyclictest81rcu_preempt09:36:181
6721993117,7cyclictest5813-21diskstats08:45:131
6721993116,8cyclictest19326-21diskstats07:55:161
672199311,4cyclictest81rcu_preempt10:49:401
672199311,4cyclictest81rcu_preempt08:05:041
672199311,28cyclictest0-21swapper/108:19:161
6721993111,6cyclictest22770-21seq11:30:461
6721993110,10cyclictest22-21ksoftirqd/112:05:221
672099319,7cyclictest30497-21gdbus08:38:130
6720993124,5cyclictest0-21swapper/008:40:550
672099312,15cyclictest3302-21runrttasks08:02:330
672099311,8cyclictest19740-21missed_timers07:55:230
672099311,5cyclictest0-21swapper/008:56:550
6720993115,5cyclictest3-21ksoftirqd/007:30:510
6720993112,6cyclictest11916-21iostat_ios07:35:190
51042311,5sleep10-21swapper/110:40:091
88522301,5sleep10-21swapper/108:52:201
672199306,4cyclictest81rcu_preempt08:30:491
672199305,4cyclictest81rcu_preempt08:58:351
6721993023,5cyclictest0-21swapper/108:03:351
6721993018,9cyclictest22-21ksoftirqd/111:10:411
672199301,4cyclictest81rcu_preempt09:43:431
672199301,4cyclictest81rcu_preempt08:28:041
6720993011,7cyclictest5797-21df08:45:120
183112300,9sleep1672199cyclictest07:50:331
133082301,5sleep113487-21cstates07:40:121
672199293,4cyclictest81rcu_preempt08:42:251
672099293,12cyclictest0-21swapper/008:20:280
672099292,14cyclictest23629-21ntp_states08:05:260
6720992915,4cyclictest3-21ksoftirqd/008:50:010
321892291,5sleep00-21swapper/008:30:060
672199284,4cyclictest81rcu_preempt07:38:121
672199283,4cyclictest81rcu_preempt09:04:591
672199280,26cyclictest111-21usb-storage07:33:381
6721992715,9cyclictest22-21ksoftirqd/111:19:191
165722261,5sleep10-21swapper/107:47:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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