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2026-07-13 - 09:58

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 Mon Jul 13, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
195999912671232,25cyclictest0-21swapper/019:28:100
194552795749,31sleep10-21swapper/119:24:011
195072455409,31sleep00-21swapper/019:24:360
19600999486,5cyclictest0-21swapper/119:28:101
88642800,4sleep0111rcuc/023:10:270
19600995419,4cyclictest22-21ksoftirqd/100:53:581
19600995212,3cyclictest22-21ksoftirqd/100:13:021
19600995019,4cyclictest22-21ksoftirqd/123:25:471
19600995015,6cyclictest22-21ksoftirqd/122:09:011
19600994915,6cyclictest22-21ksoftirqd/120:46:221
19600994815,6cyclictest22-21ksoftirqd/122:50:451
19600994815,6cyclictest22-21ksoftirqd/121:51:331
19600994815,5cyclictest22-21ksoftirqd/123:55:031
19600994815,5cyclictest22-21ksoftirqd/100:23:481
19600994814,6cyclictest22-21ksoftirqd/123:52:281
19600994814,6cyclictest22-21ksoftirqd/120:55:371
19600994814,6cyclictest22-21ksoftirqd/100:33:031
19600994814,5cyclictest22-21ksoftirqd/121:11:291
19600994725,11cyclictest22-21ksoftirqd/122:30:111
19600994725,11cyclictest22-21ksoftirqd/119:35:111
19600994715,6cyclictest22-21ksoftirqd/120:44:531
19600994715,6cyclictest22-21ksoftirqd/120:25:241
19600994715,6cyclictest22-21ksoftirqd/100:17:491
19600994715,5cyclictest22-21ksoftirqd/123:49:571
19600994715,5cyclictest22-21ksoftirqd/119:48:491
19600994714,6cyclictest22-21ksoftirqd/123:11:591
19600994714,6cyclictest22-21ksoftirqd/122:44:531
19600994714,6cyclictest22-21ksoftirqd/122:16:531
19600994714,6cyclictest22-21ksoftirqd/121:55:241
19600994714,6cyclictest22-21ksoftirqd/121:42:411
19600994714,6cyclictest22-21ksoftirqd/120:52:331
19600994714,6cyclictest22-21ksoftirqd/100:26:511
19600994714,6cyclictest22-21ksoftirqd/100:00:001
19600994714,5cyclictest22-21ksoftirqd/123:41:151
19600994714,5cyclictest22-21ksoftirqd/123:31:071
19600994714,5cyclictest22-21ksoftirqd/123:15:451
19600994714,5cyclictest22-21ksoftirqd/121:16:271
19600994714,5cyclictest22-21ksoftirqd/121:08:531
19600994714,5cyclictest22-21ksoftirqd/119:55:261
19600994714,5cyclictest22-21ksoftirqd/119:31:271
19600994714,5cyclictest22-21ksoftirqd/100:36:571
19600994713,5cyclictest22-21ksoftirqd/122:12:331
19600994615,6cyclictest22-21ksoftirqd/122:40:011
19600994615,6cyclictest22-21ksoftirqd/122:00:141
19600994614,6cyclictest22-21ksoftirqd/119:50:311
19600994614,5cyclictest22-21ksoftirqd/123:37:431
19600994614,5cyclictest22-21ksoftirqd/123:20:091
19600994614,5cyclictest22-21ksoftirqd/122:22:311
19600994614,5cyclictest22-21ksoftirqd/121:02:131
19600994515,4cyclictest22-21ksoftirqd/120:08:431
19600994514,5cyclictest22-21ksoftirqd/121:45:401
19600994514,5cyclictest22-21ksoftirqd/100:46:141
19600994514,3cyclictest22-21ksoftirqd/119:44:311
19600994513,6cyclictest22-21ksoftirqd/122:26:351
19600994513,5cyclictest22-21ksoftirqd/121:39:441
19600994422,10cyclictest22-21ksoftirqd/120:00:211
19600994415,9cyclictest22-21ksoftirqd/120:10:191
19600994415,9cyclictest22-21ksoftirqd/120:10:191
19600994414,6cyclictest22-21ksoftirqd/100:43:251
19600994413,4cyclictest22-21ksoftirqd/123:05:371
19600994412,5cyclictest22-21ksoftirqd/121:20:451
19600994310,4cyclictest81rcu_preempt20:19:221
19600994212,4cyclictest22-21ksoftirqd/123:04:251
1960099416,6cyclictest22-21ksoftirqd/120:35:161
19600994122,4cyclictest40250irq/92-i91521:30:111
19600994026,4cyclictest22-21ksoftirqd/122:55:151
19600994026,4cyclictest22-21ksoftirqd/120:20:121
19600994025,5cyclictest22-21ksoftirqd/120:30:121
19600994025,4cyclictest22-21ksoftirqd/100:05:111
19600994021,4cyclictest22-21ksoftirqd/121:25:121
19600993925,4cyclictest22-21ksoftirqd/122:45:361
19599993819,6cyclictest20759-21sed20:50:230
110652361,31sleep011086-21ntp_states21:50:250
1959999351,10cyclictest81rcu_preempt20:03:120
19599993510,12cyclictest4717-21wget21:35:120
95552341,28sleep09565-21ntp_states20:20:250
1959999342,20cyclictest11564-21packagekitd22:48:190
1959999332,5cyclictest81rcu_preempt22:00:000
19599993313,6cyclictest16114-21sendmail-msp20:40:000
1959999326,12cyclictest11565-21gdbus20:57:450
1959999324,4cyclictest81rcu_preempt21:45:150
19599993210,6cyclictest15165-21ls00:55:010
3572311,8sleep00-21swapper/022:50:060
1959999316,12cyclictest21395-21munin-run22:20:000
1959999315,4cyclictest81rcu_preempt20:15:170
1959999312,16cyclictest19807-21perl23:40:170
1959999311,14cyclictest2171-21taskset21:26:580
1959999308,6cyclictest10575-21memory23:15:220
1959999304,4cyclictest81rcu_preempt20:10:010
1959999304,4cyclictest81rcu_preempt20:10:010
1959999302,4cyclictest81rcu_preempt00:27:380
1959999301,4cyclictest81rcu_preempt23:35:120
1959999301,4cyclictest81rcu_preempt20:26:510
19599993014,5cyclictest30648-21aten_r4power_en00:10:120
1959999301,21cyclictest0-21swapper/000:19:530
19599993010,7cyclictest27863-21python00:00:310
95502291,5sleep00-21swapper/000:40:090
252192291,5sleep00-21swapper/021:02:070
1959999295,4cyclictest81rcu_preempt20:07:530
1959999292,15cyclictest29996-21/usr/sbin/munin21:15:190
1959999292,14cyclictest28801-21/usr/sbin/munin00:05:120
1959999291,4cyclictest81rcu_preempt22:36:050
1959999291,4cyclictest81rcu_preempt19:48:550
19599992912,4cyclictest0-21swapper/022:30:130
19599992911,6cyclictest13728-21sed20:30:310
1959999291,15cyclictest12600-21/usr/sbin/munin23:20:240
1959999291,14cyclictest8903-21unixbench_singl00:35:300
139892291,5sleep00-21swapper/022:00:030
40402281,5sleep00-21swapper/021:30:500
196092281,5sleep00-21swapper/020:47:310
1959999289,6cyclictest29822-21aten_r4power_en19:50:120
1959999286,4cyclictest81rcu_preempt23:00:210
1959999283,4cyclictest81rcu_preempt22:08:470
19599992819,6cyclictest13720-21aten_r4power_en23:25:120
1959999281,4cyclictest81rcu_preempt23:56:100
1959999281,4cyclictest81rcu_preempt22:24:330
1959999281,3cyclictest81rcu_preempt23:51:470
19599992811,5cyclictest29957-21proc_pri22:40:250
1959999281,10cyclictest22825-21if_eth019:30:170
19599992810,5cyclictest16369-21ntp_states23:30:260
178752281,5sleep00-21swapper/020:44:040
326092271,5sleep00-21swapper/021:20:390
1959999279,6cyclictest26004-21fschecks_count21:05:170
19599992711,4cyclictest0-21swapper/019:35:200
1959999271,13cyclictest81rcu_preempt00:30:130
1959999271,13cyclictest18956-21grep22:10:300
1959999271,12cyclictest22300-21timerandwakeup23:45:280
1959999268,6cyclictest2488-21tr22:55:130
1959999265,4cyclictest81rcu_preempt21:10:280
1959999261,16cyclictest0-21swapper/019:55:020
1959999261,13cyclictest6786-21df21:40:140
1959999260,4cyclictest81rcu_preempt00:46:360
19599992515,6cyclictest7525-21runrttasks23:06:390
1959999251,15cyclictest0-21swapper/019:40:300
1959999251,13cyclictest0-21swapper/022:25:270
1959999251,12cyclictest0-21swapper/000:20:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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