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2026-04-06 - 16:11

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 Apr 06, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155652189819,1863sleep314629-1kworker/3:1H11:17:223
7190213165,1300sleep218729-1kworker/2:1H12:32:192
23935254018,506sleep023969-21/usr/sbin/munin11:42:190
13351242520,384sleep013400-21unin-run11:11:490
2608123578,334sleep226157-21awk10:07:182
2608123578,334sleep226157-21awk10:07:182
157223207,303sleep213441-21snmpd08:50:162
5033229416,259sleep35142-21sed12:26:513
27859226375,90sleep20-21swapper/210:12:352
14883225466,172sleep215007-21timerwakeupswit07:47:212
28712223389,71sleep20-21swapper/210:17:032
5109222758,48sleep20-21swapper/207:18:212
18309222676,129sleep20-21swapper/209:42:182
13873222621,184sleep214015-21unixbench_singl09:27:202
13873222621,184sleep214015-21unixbench_singl09:27:202
9625222315,193sleep09679-21grep07:32:080
24466220873,124sleep224479-21awk08:17:222
24466220873,124sleep224479-21awk08:17:222
450422058,181sleep24669-21cat07:16:512
4119220338,87sleep24162-21ntpq12:22:142
3103622037,182sleep215920-21kworker/u8:008:41:442
27943219912,169sleep328085-21sed11:56:513
25554219543,85sleep224996-21/usr/sbin/munin11:47:172
29967219214,135sleep230031-21latency12:02:112
25619216626,53sleep225691-21sendmail_mailtr08:22:182
25619216626,53sleep225691-21sendmail_mailtr08:22:182
3947216559,88sleep24107-21gpgv10:41:512
17735216413,89sleep217782-21ntpq07:57:142
20437216263,53sleep20-21swapper/208:07:042
20602215812,132sleep020682-21sendmail_mailtr11:32:170
20602215812,132sleep020682-21sendmail_mailtr11:32:170
19537215416,123sleep119586-21basename09:47:101
5943214210,48sleep20-21swapper/212:27:192
24049214216,62sleep20-21swapper/211:42:212
4928214027,91sleep20-21swapper/210:42:242
717321378,117sleep27264-21cut09:07:172
412021377,118sleep24191-21cat08:57:192
16131213618,57sleep216176-21ntpq07:52:132
17559213413,104sleep317590-21latency_hist09:41:503
1468521348,34sleep20-21swapper/209:32:042
8673213351,20sleep28820-21grep07:27:212
8673213351,20sleep28820-21grep07:27:212
297621328,111sleep00-21swapper/008:53:250
217521327,30sleep20-21swapper/212:17:052
13142213157,59sleep013193-21/usr/sbin/munin07:42:180
577213019,14sleep20-21swapper/212:12:042
3133321309,87sleep20-21swapper/208:42:052
15157212929,60sleep215330-21cat11:16:522
1155321296,63sleep20-21swapper/209:21:592
23248212630,52sleep20-21swapper/208:16:492
23248212630,52sleep20-21swapper/208:16:492
1311212631,25sleep2876-21/usr/sbin/munin10:32:142
31997212530,84sleep028388-1kworker/0:1H07:02:040
16256212548,42sleep20-21swapper/209:37:012
1307621245,29sleep20-21swapper/211:08:162
3216212316,89sleep13369-21awk10:37:221
12659212328,22sleep2928-21cyclictest07:42:042
1290212119,86sleep11310-21/usr/sbin/munin10:32:131
20199212013,85sleep20-21swapper/208:06:512
22357211910,19sleep20-21swapper/211:37:522
5594211713,14sleep10-21swapper/109:02:191
2874621178,95sleep228842-21cat11:57:192
9249211618,30sleep19250-21cron07:31:491
9249211618,30sleep19250-21cron07:31:491
31893211611,83sleep20-21swapper/210:27:092
954721158,89sleep20-21swapper/209:16:502
11224211516,86sleep311374-21unixbench_multi11:02:203
2148211415,23sleep10-21swapper/112:17:001
21339211411,46sleep20-21swapper/211:36:272
21339211411,46sleep20-21swapper/211:36:272
1696211458,15sleep20-21swapper/207:07:182
19115211329,62sleep20-21swapper/211:27:182
6531211235,60sleep20-21swapper/207:22:082
3582211213,84sleep03652-21sendmail_mailtr07:12:210
31160211124,75sleep20-21swapper/212:06:512
29173211116,73sleep328687-21/usr/sbin/munin10:17:163
28846211128,66sleep20-21swapper/208:32:202
11167211034,43sleep211178-21munin-run09:21:512
3320210927,67sleep23392-21latency_hist08:56:502
17937210915,78sleep318018-21cat07:57:193
2790321088,84sleep227941-21latency_hist11:56:502
7972210715,72sleep08000-21latency_hist09:11:510
28396210714,78sleep028467-21sh10:16:490
9663210612,80sleep09777-21timerwakeupswit10:57:200
20614210620,66sleep020645-21idleruntime-cro09:51:490
10876210626,58sleep20-21swapper/207:36:512
21365210515,72sleep021385-21/usr/sbin/munin09:52:170
27092210423,17sleep20-21swapper/208:27:152
14149210414,74sleep00-21swapper/011:12:180
7414210313,22sleep20-21swapper/210:52:052
2449521038,85sleep224532-21ps10:02:172
2449521038,85sleep224532-21ps10:02:172
19958210314,69sleep320048-21timerandwakeup09:47:203
544210116,57sleep10-21swapper/112:11:591
31625210014,71sleep331669-21ntpq12:07:133
20656210019,17sleep20-21swapper/209:51:512
534929816,67sleep15353-21diskstats12:27:051
379129831,45sleep01-21systemd10:41:490
1372229812,68sleep113723-21/usr/sbin/munin11:12:071
2397029716,22sleep10-21swapper/111:42:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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