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2026-06-08 - 15:58

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 Mon Jun 08, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27853210068,982sleep327940-21munin-node07:13:003
27853210068,982sleep327940-21munin-node07:13:003
1189326999,676sleep311938-21ntpq11:28:223
31977251916,489sleep131970-21apt-get12:33:111
31977251916,489sleep131970-21apt-get12:33:111
21485242610,404sleep321526-21awk11:58:213
21485242610,404sleep321526-21awk11:58:213
1546023864,371sleep325556-1kworker/3:0H09:58:313
30689237013,255sleep330846-21tail07:18:293
1441223379,313sleep314484-21cat08:12:593
5410232726,152sleep35497-21fschecks_time07:43:153
5410232726,152sleep35497-21fschecks_time07:43:153
5930232113,296sleep36017-21perl09:28:163
27016228619,243sleep027057-21awk12:17:560
1426226512,131sleep31447-21latency_hist10:57:583
8406223212,15sleep20-21swapper/211:18:192
11641221333,100sleep311703-21fschecks_time08:03:183
25516219911,171sleep325669-21sort12:12:593
27398219617,167sleep00-21swapper/010:35:300
1022218934,64sleep31059-21ntp_kernel_err07:28:223
1677218115,143sleep30-21swapper/310:58:143
20222218022,60sleep30-21swapper/311:53:333
28505217714,141sleep30-21swapper/307:13:163
13373217610,148sleep313422-21latency_hist09:52:583
28581217319,52sleep30-21swapper/310:38:283
1363921730,11sleep30-21swapper/309:53:133
30068217111,63sleep330165-21timerandwakeup10:43:283
31681216910,142sleep00-21swapper/012:32:500
9464216515,57sleep30-21swapper/309:38:253
331721606,142sleep33350-21grep11:03:183
1533221605,13sleep10-21swapper/109:58:001
27091215911,129sleep327102-21sort08:53:073
25889215723,110sleep125944-21gpgv07:07:571
437121549,61sleep30-21swapper/309:23:153
437121549,61sleep30-21swapper/309:23:153
31050214818,112sleep231178-21cat12:28:282
22969214516,114sleep30-21swapper/310:22:573
16988214322,105sleep30-21swapper/310:03:113
204221406,13sleep30-21swapper/309:13:433
3197421386,34sleep30-21swapper/312:33:093
3197421386,34sleep30-21swapper/312:33:093
17494213644,37sleep317508-21modprobe08:22:563
6582213127,81sleep06608-21awk07:47:560
6582213127,81sleep06608-21awk07:47:560
31690213110,87sleep331732-21true12:32:573
665212932,81sleep3636-21/usr/sbin/munin09:12:583
23952212910,102sleep324059-21latency_hist12:07:583
27291212213,87sleep30-21swapper/310:34:083
1979421227,98sleep30-21swapper/310:12:563
29742212118,47sleep30-21swapper/309:00:063
32654211818,11sleep30-21swapper/307:25:553
29893211717,12sleep30-21swapper/312:24:453
23445211715,50sleep30-21swapper/308:39:233
26856211631,76sleep327860-21munin-node12:15:533
24224211618,47sleep30-21swapper/310:24:393
3223021155,12sleep30-21swapper/310:52:333
17546211522,27sleep20-21swapper/208:22:592
10595211411,15sleep30-21swapper/311:24:223
18766211312,20sleep10-21swapper/110:08:181
15916211336,11sleep30-21swapper/308:17:553
735211115,79sleep2830-21cut07:28:162
16240211117,68sleep00-21swapper/008:18:130
30984210813,78sleep131049-21switchtime12:28:271
19020210813,77sleep019082-21/usr/sbin/munin10:08:250
3862210718,76sleep03893-21fschecks_count07:38:200
2409421079,43sleep323984-21/usr/sbin/munin08:43:143
12812210724,62sleep112834-21modprobe08:07:561
816321060,10sleep08155-21munin-run07:52:560
14994210611,74sleep115040-21/usr/sbin/munin11:38:251
30413210529,40sleep30-21swapper/309:03:173
32553210322,29sleep20-21swapper/210:53:122
9934210221,63sleep19439-21apt-get11:23:071
9001210222,44sleep30-21swapper/307:53:293
8792210210,15sleep30-21swapper/311:18:283
2608221028,46sleep326182-21sed10:32:583
25233210222,62sleep125269-21wc10:28:241
15023210118,61sleep114624-21/usr/sbin/munin08:13:211
16168210022,42sleep30-21swapper/311:43:113
808829918,13sleep30-21swapper/307:52:243
782629918,11sleep30-21swapper/311:17:483
782629918,11sleep30-21swapper/311:17:483
37752998,78sleep33766-21apt-get07:38:153
1566729919,11sleep30-21swapper/311:40:123
130482998,79sleep313038-21apt-get11:33:143
714329816,68sleep17226-21awk11:14:231
714329816,68sleep17226-21awk11:14:231
363129811,72sleep13655-21ntp_kernel_pll_11:03:241
2666529818,12sleep30-21swapper/308:50:533
1334029820,62sleep20-21swapper/208:08:172
835429718,12sleep30-21swapper/309:34:133
584029718,11sleep30-21swapper/311:10:213
584029718,11sleep30-21swapper/311:10:213
2836729718,11sleep30-21swapper/312:20:013
2771329719,62sleep027737-21latency_hist07:12:560
2771329719,62sleep027737-21latency_hist07:12:560
240429720,44sleep30-21swapper/307:33:183
190432978,17sleep30-21swapper/308:27:563
1831829717,54sleep20-21swapper/210:07:582
1794729728,51sleep017442-21apt-get11:48:090
1161229718,11sleep30-21swapper/309:45:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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