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2026-03-26 - 19:20

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 Thu Mar 26, 2026 12:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121509912271217,7cyclictest0-21swapper/007:27:030
121519912261217,6cyclictest0-21swapper/107:27:231
120422579533,31sleep00-21swapper/007:24:260
119922460417,28sleep10-21swapper/107:23:561
1994321080,2sleep00-21swapper/009:42:200
45682770,2sleep00-21swapper/011:40:210
176882580,8sleep11215199cyclictest11:20:221
93532440,10sleep0111rcuc/008:40:120
12150994420,7cyclictest3-21ksoftirqd/011:45:040
12150994420,7cyclictest3-21ksoftirqd/011:45:030
304602420,4sleep1211ktimersoftd/109:20:131
12150994226,5cyclictest3-21ksoftirqd/009:36:190
12150994222,5cyclictest3-21ksoftirqd/011:07:450
12150994222,5cyclictest3-21ksoftirqd/010:44:180
207712410,4sleep120767-21perl10:50:171
12150994125,5cyclictest3-21ksoftirqd/012:15:120
12150994125,5cyclictest3-21ksoftirqd/010:34:310
12150994124,5cyclictest3-21ksoftirqd/011:00:210
12150994123,6cyclictest3-21ksoftirqd/010:10:180
12150994120,5cyclictest3-21ksoftirqd/011:11:370
12150994024,5cyclictest3-21ksoftirqd/011:51:420
12150994023,5cyclictest3-21ksoftirqd/009:10:290
12150994020,5cyclictest3-21ksoftirqd/010:16:290
1215099394,18cyclictest20757-21ntp_states12:30:270
12150993924,4cyclictest3-21ksoftirqd/010:05:120
12150993922,6cyclictest3-21ksoftirqd/010:37:100
12150993920,4cyclictest3-21ksoftirqd/011:35:060
12150993919,4cyclictest3-21ksoftirqd/012:26:230
257382380,3sleep0111rcuc/010:21:310
1215199388,4cyclictest20196-21diskmemload09:47:531
1215199385,4cyclictest81rcu_preempt10:10:061
12150993823,5cyclictest3-21ksoftirqd/010:29:020
12150993822,5cyclictest3-21ksoftirqd/009:31:420
12150993821,5cyclictest3-21ksoftirqd/009:25:300
12150993817,5cyclictest3-21ksoftirqd/011:55:390
1215099381,23cyclictest14791-21ntp_states07:30:060
299402371,4sleep130109-21grep11:00:121
12151993728,5cyclictest1734-21fschecks_count08:20:161
1215099372,4cyclictest40550irq/92-i91512:49:160
12150993722,5cyclictest3-21ksoftirqd/011:21:110
12150993719,6cyclictest3-21ksoftirqd/008:04:190
12150993716,5cyclictest3-21ksoftirqd/010:01:490
94872361,10sleep10-21swapper/110:38:511
1215199363,31cyclictest0-21swapper/108:00:561
12151993627,5cyclictest10650-21hddtemp_smartct12:20:151
1215199362,30cyclictest0-21swapper/109:38:561
12150993622,4cyclictest3-21ksoftirqd/012:40:570
12150993621,5cyclictest3-21ksoftirqd/012:01:070
12150993621,5cyclictest3-21ksoftirqd/011:17:370
12150993621,5cyclictest3-21ksoftirqd/010:50:270
12150993619,5cyclictest3-21ksoftirqd/012:51:200
1215099361,31cyclictest32046-21diskstats09:55:160
1215099361,14cyclictest18465-21cron07:40:000
1215199357,4cyclictest20196-21diskmemload11:44:261
1215199352,5cyclictest81rcu_preempt09:58:231
1215199352,30cyclictest0-21swapper/111:38:551
1215199351,9cyclictest0-21swapper/110:42:561
1215199351,5cyclictest8272-21ssh10:04:151
12151993510,5cyclictest233462rm09:12:341
12150993521,4cyclictest3-21ksoftirqd/009:20:570
12150993520,5cyclictest3-21ksoftirqd/012:37:400
1215099351,5cyclictest5103-21kworker/0:010:47:150
12150993510,4cyclictest0-21swapper/010:57:260
311232341,28sleep120196-21diskmemload12:40:491
1215199347,22cyclictest0-21swapper/110:22:491
1215199346,4cyclictest81rcu_preempt12:10:251
1215199345,4cyclictest81rcu_preempt11:19:061
1215199344,5cyclictest81rcu_preempt10:05:061
1215199343,5cyclictest81rcu_preempt09:19:431
1215199342,4cyclictest0-21swapper/111:46:161
1215199342,4cyclictest0-21swapper/111:46:151
1215199341,4cyclictest81rcu_preempt12:07:341
1215199341,4cyclictest81rcu_preempt10:30:261
12150993426,6cyclictest0-21swapper/008:23:150
12150993419,4cyclictest3-21ksoftirqd/012:11:040
12150993418,6cyclictest3-21ksoftirqd/009:51:490
12150993418,6cyclictest3-21ksoftirqd/009:51:490
12150993418,5cyclictest3-21ksoftirqd/009:45:160
227092331,5sleep122818-21awk11:25:281
1215199337,22cyclictest0-21swapper/111:12:461
1215199334,4cyclictest81rcu_preempt09:25:081
1215199332,4cyclictest81rcu_preempt12:16:331
12151993317,4cyclictest40550irq/92-i91508:45:011
12151993315,15cyclictest22-21ksoftirqd/111:56:381
1215199331,4cyclictest22536-21ssh10:18:561
12151993312,4cyclictest81rcu_preempt11:50:331
1215099335,25cyclictest29383-21ssh11:32:350
12150993317,5cyclictest3-21ksoftirqd/012:09:030
12150993316,5cyclictest3-21ksoftirqd/008:29:530
1215099331,5cyclictest0-21swapper/008:13:150
1215199324,4cyclictest81rcu_preempt11:33:531
1215199323,4cyclictest81rcu_preempt11:07:421
12151993224,4cyclictest17555-21diskstats09:40:161
1215199322,26cyclictest23473-21tune2fs12:00:161
12151993219,4cyclictest22-21ksoftirqd/110:55:171
1215199321,5cyclictest0-21swapper/107:56:561
1215199321,5cyclictest0-21swapper/107:52:561
1215199321,29cyclictest0-21swapper/108:15:161
1215099326,14cyclictest81rcu_preempt08:50:310
1215099326,13cyclictest0-21swapper/009:16:000
12150993215,6cyclictest3-21ksoftirqd/008:06:180
135132311,3sleep00-21swapper/012:23:190
1215199317,4cyclictest81rcu_preempt12:35:111
1215199312,4cyclictest81rcu_preempt12:49:521
1215199311,9cyclictest0-21swapper/108:58:271
1215199311,27cyclictest0-21swapper/109:30:551
1215199311,16cyclictest16373-21ntp_states10:45:261
1215099317,5cyclictest26180-21awk08:00:000
12150993115,6cyclictest3-21ksoftirqd/009:00:030
12150993114,5cyclictest7771-21irqstats08:35:210
12150993111,6cyclictest6559-21users08:30:300
12150993111,6cyclictest6559-21users08:30:290
210352300,8sleep11215199cyclictest12:30:301
1215199305,11cyclictest40550irq/92-i91508:25:281
12151993025,3cyclictest0-21swapper/107:42:361
1215199301,4cyclictest81rcu_preempt08:06:421
1215199301,27cyclictest0-21swapper/112:52:151
1215199301,26cyclictest0-21swapper/107:35:151
12151993012,5cyclictest30497-21gdbus12:27:131
1215199301,16cyclictest11138-21cut08:45:111
12150993016,4cyclictest3-21ksoftirqd/007:49:130
1215099301,5cyclictest0-21swapper/008:55:470
12150993014,5cyclictest3-21ksoftirqd/007:41:340
12150993010,6cyclictest22548-21cut11:25:240
122852291,5sleep00-21swapper/008:46:060
1215199299,6cyclictest18922-21fschecks_time09:05:151
1215199295,4cyclictest81rcu_preempt09:02:191
12151992917,9cyclictest22-21ksoftirqd/110:27:151
1215199291,6cyclictest27195-21ssh09:50:151
1215199291,6cyclictest27195-21ssh09:50:141
12151992914,11cyclictest14542-21turbostat08:55:001
1215199291,3cyclictest81rcu_preempt08:38:591
1215199291,14cyclictest15932-21cat07:30:271
12150992913,5cyclictest3-21ksoftirqd/007:52:230
199432281,4sleep00-21swapper/009:07:340
10682281,5sleep00-21swapper/008:18:240
1215199274,17cyclictest20813-21diskstats07:45:161
1215199264,8cyclictest5592-21diskstats08:30:151
1215199264,8cyclictest5592-21diskstats08:30:141
1215199243,5cyclictest30446-21grep08:10:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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