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2026-05-17 - 21:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 100 highest latencies:
System rack7slot7s.osadl.org (updated Sun May 17, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
700921020,0sleep00-21swapper/010:46:360
1178329280,8sleep00-21swapper/007:07:020
1186329063,9sleep30-21swapper/307:08:053
1177928663,18sleep10-21swapper/107:06:591
1174828668,14sleep20-21swapper/207:06:362
281972720,1sleep013-21ksoftirqd/011:18:540
281972720,1sleep013-21ksoftirqd/011:18:540
152392620,1sleep10-21swapper/112:09:161
1209699290,28cyclictest0-21swapper/311:57:223
12087992928,1cyclictest0-21swapper/111:59:131
12086992827,1cyclictest0-21swapper/012:27:330
1208699270,4cyclictest0-21swapper/010:09:160
1209699241,11cyclictest0-21swapper/311:10:153
14642230,0sleep20-21swapper/212:20:152
1208799231,1cyclictest5162-21diskmemload09:44:311
1208799230,19cyclictest0-21swapper/109:10:471
1208699220,1cyclictest0-21swapper/011:07:320
1208799210,1cyclictest0-21swapper/112:00:301
1208799210,0cyclictest0-21swapper/111:31:071
12087992018,1cyclictest0-21swapper/111:15:171
12087992018,1cyclictest0-21swapper/111:15:171
1208799200,3cyclictest0-21swapper/111:25:141
1208699190,15cyclictest0-21swapper/010:56:590
297302180,0sleep10-21swapper/109:24:341
12096991816,2cyclictest0-21swapper/312:26:243
1208799182,15cyclictest12336-21apt-get07:10:151
12087991818,0cyclictest0-21swapper/110:53:551
1208799180,2cyclictest0-21swapper/111:06:131
12086991817,1cyclictest0-21swapper/011:04:070
12086991816,1cyclictest13-21ksoftirqd/010:20:580
12096991716,1cyclictest0-21swapper/310:10:153
1209699170,1cyclictest0-21swapper/310:18:503
1209199172,9cyclictest27007-21idleruntime-cro10:40:002
1208799170,17cyclictest0-21swapper/110:09:101
1208699175,7cyclictest13267-21awk08:20:000
1209699167,8cyclictest537-21snmpd09:29:553
12096991616,0cyclictest0-21swapper/311:06:503
1209699161,5cyclictest141rcu_preempt09:42:053
12096991613,1cyclictest0-21swapper/310:55:493
1209699160,1cyclictest0-21swapper/309:58:093
1209199163,5cyclictest0-21swapper/211:20:142
1209199161,9cyclictest26393-21apache_volume12:35:122
1209199160,14cyclictest0-21swapper/209:21:112
12087991614,1cyclictest0-21swapper/108:30:141
1208799160,2cyclictest0-21swapper/110:00:081
1208799160,2cyclictest0-21swapper/110:00:081
1208799160,16cyclictest0-21swapper/112:34:361
1208699166,3cyclictest141rcu_preempt10:36:300
1208699160,1cyclictest0-21swapper/009:33:030
1208699160,16cyclictest0-21swapper/012:01:560
1209199153,5cyclictest5162-21diskmemload10:55:102
1209199152,6cyclictest225-21systemd-journal11:45:002
12091991514,1cyclictest0-21swapper/208:00:162
1209199150,14cyclictest0-21swapper/212:03:352
1208799158,2cyclictest4666-21sed09:05:261
12087991512,2cyclictest0-21swapper/111:39:291
1208799151,14cyclictest0-21swapper/109:48:141
1208799150,15cyclictest0-21swapper/112:39:301
1208799150,15cyclictest0-21swapper/111:54:591
1208699150,2cyclictest0-21swapper/011:25:290
1208699150,1cyclictest0-21swapper/009:50:550
1209699141,9cyclictest0-21swapper/312:10:143
12096991413,1cyclictest0-21swapper/310:52:493
12096991412,1cyclictest0-21swapper/309:30:413
12096991410,3cyclictest9975-21wc09:50:253
12096991410,3cyclictest26467-21cat07:40:003
12096991410,3cyclictest16559-21grep11:30:303
1209699140,1cyclictest0-21swapper/310:40:153
1209699140,1cyclictest0-21swapper/310:32:583
1209699140,13cyclictest8350-21wc11:45:193
1209199149,3cyclictest18391-21ssh12:30:142
1209199146,6cyclictest31834-21apache210:26:272
1209199143,10cyclictest55750irq/128-enp2s0-09:12:372
12091991411,2cyclictest19918-21cron10:55:002
12091991410,2cyclictest16056-21fgrep11:30:242
1209199140,3cyclictest0-21swapper/212:29:442
1209199140,3cyclictest0-21swapper/211:19:362
1209199140,3cyclictest0-21swapper/211:19:362
1209199140,1cyclictest0-21swapper/212:16:542
1209199140,14cyclictest0-21swapper/209:48:362
1209199140,13cyclictest0-21swapper/211:29:052
1208799141,1cyclictest16041-21ssh11:10:571
1208799141,12cyclictest21168-21ssh09:57:131
1208799141,12cyclictest0-21swapper/110:55:371
12087991410,3cyclictest5567-21wc08:00:291
12087991410,3cyclictest31946-21ssh11:20:271
12087991410,2cyclictest513-21cron12:20:001
12087991410,2cyclictest31635-21tr07:50:141
12087991410,2cyclictest0-21swapper/112:12:521
1208699143,6cyclictest0-21swapper/007:10:150
1208699143,10cyclictest11984-21/usr/sbin/munin10:50:110
12086991412,1cyclictest0-21swapper/010:40:280
12086991410,3cyclictest23202-21tail09:20:160
1208699140,14cyclictest0-21swapper/011:55:200
1208699140,12cyclictest25484-21sort08:45:010
12096991310,2cyclictest21640-21head08:35:163
12096991310,2cyclictest18361-21wc07:20:213
12096991310,2cyclictest10445-21head08:10:283
1209699130,2cyclictest0-21swapper/312:17:233
1209699130,1cyclictest0-21swapper/309:19:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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