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2026-01-11 - 23:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot7s.osadl.org (updated Sun Jan 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94202366913,3643sleep027806-21kworker/0:210:31:250
161002138815,1359sleep131588-1kworker/1:2H09:10:361
7960212768,1254sleep37694-1kworker/3:1H10:27:413
14224212425,1211sleep131588-1kworker/1:2H12:35:081
7195210455,1030sleep131588-1kworker/1:2H12:11:141
1531926107,592sleep222605-1kworker/2:0H12:38:492
19983257713,549sleep020056-21users07:40:140
2476325557,539sleep222605-1kworker/2:0H11:22:262
1063825328,513sleep03953-1kworker/0:1H08:55:170
28798245337,400sleep128853-21find11:35:091
11235243611,417sleep37694-1kworker/3:1H10:36:453
988624228,405sleep03953-1kworker/0:1H08:53:150
18408234715,315sleep318511-21unin-run09:19:433
13740227521,226sleep013938-21latency_hist12:34:430
2474226315,123sleep10-21swapper/110:10:111
1136422587,240sleep1378-21sshd10:38:251
859122477,227sleep37694-1kworker/3:1H12:16:413
18276224556,78sleep118293-21modprobe09:19:411
4935223529,152sleep14938-21cron12:04:401
757221871,88sleep10-21swapper/110:05:061
27254221313,151sleep127337-21mailstats11:30:091
14223221331,129sleep10-21swapper/109:05:111
26479219158,120sleep126507-21latency_hist11:29:401
1308321899,81sleep113223-21unixbench_singl12:30:121
17763218615,155sleep317821-21cat10:59:423
17683218634,83sleep117686-21cron10:59:401
1342321768,153sleep113570-21cat09:04:431
1342321768,153sleep113570-21cat09:04:431
15097217321,98sleep115203-21ls07:25:131
1162821678,17sleep10-21swapper/107:15:081
17588216110,30sleep10-21swapper/107:35:021
28618215862,49sleep10-21swapper/109:50:091
473621486,11sleep00-21swapper/008:35:180
3119821489,83sleep10-21swapper/111:44:421
7170214521,13sleep10-21swapper/110:25:331
1996721458,124sleep37694-1kworker/3:1H09:23:063
1996721458,124sleep37694-1kworker/3:1H09:23:063
22339214424,105sleep122372-21fschecks_count07:50:001
3210021419,120sleep132163-21sendmail_mailqu08:20:131
21276214147,37sleep10-21swapper/107:45:121
2970821386,14sleep10-21swapper/109:54:571
1731121388,120sleep117341-21unin-run07:34:421
10306213810,75sleep110439-21latency_hist08:54:451
6485213731,56sleep16526-21http12:09:411
25063213222,85sleep025068-21modprobe07:59:400
2120221318,14sleep00-21swapper/007:45:110
9693213047,65sleep19705-21munin-run10:34:411
3141021267,104sleep131557-21cut08:19:441
3141021267,104sleep131557-21cut08:19:441
29974212614,98sleep229999-21grep11:39:592
17063212611,98sleep03953-1kworker/0:1H09:15:000
8428212110,55sleep18612-21latency_hist08:49:441
21587211911,89sleep121647-21find11:10:101
20459211910,51sleep10-21swapper/107:44:431
355621186,96sleep10-21swapper/110:14:591
314821177,98sleep00-21swapper/010:14:050
18003211713,43sleep19200-21cyclictest10:59:571
23498211614,78sleep223499-21192.168.115.60-07:54:292
10051211616,85sleep210139-21systemd-run08:54:422
16481211513,86sleep316492-21ntpq07:30:083
1990221145,93sleep10-21swapper/109:22:151
1990221145,93sleep10-21swapper/109:22:151
25841211322,36sleep10-21swapper/108:00:101
11751211210,88sleep311783-21/usr/sbin/munin07:15:103
500210817,71sleep0644-21cat08:24:440
1280121085,92sleep10-21swapper/110:41:361
2508210712,35sleep10-21swapper/111:55:071
2492321065,58sleep10-21swapper/107:57:561
9594210551,15sleep10-21swapper/107:10:071
9594210551,15sleep10-21swapper/107:10:071
12105210534,56sleep112212-21latency_hist12:29:431
5535210414,75sleep25558-21/usr/sbin/munin10:20:092
5535210414,75sleep25558-21/usr/sbin/munin10:20:092
1186121047,63sleep111868-21munin-run08:59:421
16191210323,59sleep20-21swapper/209:10:372
12938210342,21sleep112931-21apt-get07:19:561
2233221028,14sleep00-21swapper/007:49:590
13099210215,64sleep312912-21/usr/sbin/munin07:20:023
196921015,84sleep00-21swapper/008:29:320
13039210113,75sleep013086-21systemd-run10:44:420
32549210042,24sleep11-21systemd10:04:421
20245210039,23sleep120390-21sed11:05:131
2474229912,21sleep324771-21munin-run09:39:413
170029819,55sleep21825-21latency_hist10:09:432
2877829710,15sleep00-21swapper/011:35:080
391729634,16sleep10-21swapper/108:35:021
319932967,66sleep00-21swapper/010:00:130
275702965,81sleep10-21swapper/109:45:531
1492029632,42sleep214954-21munin-run09:09:402
58382957,31sleep10-21swapper/108:40:071
2978129512,19sleep00-21swapper/008:14:420
2978129512,19sleep00-21swapper/008:14:420
53829410,68sleep10-21swapper/111:49:551
26242940,11sleep30-21swapper/310:10:123
2119129414,13sleep30-21swapper/311:10:003
921729310,55sleep30-21swapper/312:19:483
3792938,16sleep00-21swapper/010:04:530
320442928,68sleep10-21swapper/111:45:101
12762927,13sleep10-21swapper/108:25:131
1126329219,26sleep00-21swapper/012:25:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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