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2026-08-02 - 07:13

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 Aug 02, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20274219769,1954sleep315724-21kworker/3:200:30:383
32137210339,1007sleep326563-1kworker/3:0H21:42:483
3143296320,921sleep33267-21sshd23:37:393
22427283417,800sleep321489-21/usr/sbin/munin22:53:113
46862597557,26sleep04688-21sshd23:40:380
25412258316,439sleep125428-21ls21:22:361
250632420250,147sleep125156-21fschecks_time19:38:021
294192353157,179sleep129458-21fschecks_count23:17:591
749822819,255sleep0195-21jbd2/mmcblk2p2-22:07:520
749822819,255sleep0195-21jbd2/mmcblk2p2-22:07:520
15251227723,233sleep015354-21unixbench_multi20:48:120
9574227051,198sleep10-21swapper/123:57:391
9574227051,198sleep10-21swapper/123:57:391
25462227018,237sleep325467-21latency_hist21:22:383
30949224753,167sleep131089-21latency_hist19:57:391
20477223614,206sleep320518-21idleruntime-cro21:07:373
2303223238,173sleep12343-21proc_pri23:34:061
15052221124,167sleep115125-21sshd22:32:391
11988221014,181sleep112075-21timerandwakeup00:03:121
11988221014,181sleep112075-21timerandwakeup00:03:121
24644219914,169sleep124686-21awk19:37:371
18176219817,160sleep118303-21latency_hist22:42:401
18176219817,160sleep118303-21latency_hist22:42:401
14996219218,21sleep10-21swapper/119:08:021
2854621869,160sleep128041-21/usr/sbin/munin19:48:071
23078218317,149sleep123161-21mailstats21:13:081
15399217913,151sleep115497-21fschecks_time22:32:591
12352169132,17sleep10-21swapper/121:47:471
19618216816,138sleep119658-21grep21:03:031
16072216619,130sleep016066-21apt-get00:17:520
7006215715,129sleep17091-21cut20:23:071
2877721578,55sleep10-21swapper/121:32:501
11805215618,114sleep10-21swapper/120:38:041
31682215310,127sleep131772-21apt-config21:42:381
26165215317,27sleep10-21swapper/121:23:051
19938215116,31sleep119948-21acpi22:47:481
2510421498,51sleep10-21swapper/123:03:061
2510421498,51sleep10-21swapper/123:03:061
18016214915,114sleep118104-21sshd19:17:391
9452214815,35sleep19538-21wc20:32:391
29695214824,99sleep229711-21sort19:52:562
21097214742,90sleep121144-21ntp_kernel_pll_00:33:021
16255214612,109sleep10-21swapper/120:52:581
35962145104,18sleep10-21swapper/120:13:011
35962145104,18sleep10-21swapper/120:13:011
29090214519,109sleep129206-21latency_hist23:17:391
3133621448,121sleep00-21swapper/021:38:460
3318214213,22sleep10-21swapper/121:53:081
1021214112,66sleep11112-21sort21:47:391
6750213710,61sleep10-21swapper/123:47:541
7987213413,104sleep28057-21sed23:52:392
22354213014,100sleep122516-21latency_hist21:12:391
10838213019,93sleep10-21swapper/122:17:581
32236212911,21sleep132390-21modprobe23:27:401
2435621299,107sleep124385-21munin-run23:02:371
2435621299,107sleep124385-21munin-run23:02:371
3275212312,95sleep03315-21ps21:53:070
18148212312,44sleep117640-21/usr/sbin/munin20:58:061
18148212312,44sleep117640-21/usr/sbin/munin20:58:061
1079721239,38sleep10-21swapper/120:34:291
30057212025,76sleep030085-21munin-run21:37:370
18878211923,72sleep018891-21cron00:27:370
9846211820,80sleep29344-21apt-get20:32:482
26510211810,14sleep10-21swapper/119:42:501
20026211810,96sleep116121-21munin-node19:22:481
13059211810,45sleep113068-21diskstats20:42:571
3087921177,16sleep10-21swapper/123:22:511
19333211713,16sleep00-21swapper/000:27:570
8522211615,79sleep38529-21/usr/sbin/munin20:28:053
18982211610,92sleep219007-21sed21:02:392
18982211610,92sleep219007-21sed21:02:392
555211510,34sleep10-21swapper/120:03:001
20034211516,79sleep320040-21/usr/sbin/munin22:47:543
32135211318,76sleep231650-21apt-get21:42:472
2577211322,68sleep02724-21grep20:08:120
1653421139,41sleep116568-21ps00:18:051
13222211322,75sleep313251-21fschecks_count19:02:563
4652211250,34sleep04675-21ls20:17:370
4652211250,34sleep04675-21ls20:17:370
1841221125,13sleep00-21swapper/019:17:420
1218621127,15sleep10-21swapper/122:22:541
580521109,29sleep10-21swapper/123:43:101
31188211011,34sleep10-21swapper/119:57:521
19585211011,38sleep10-21swapper/100:28:021
487521088,29sleep10-21swapper/123:42:371
466221089,14sleep10-21swapper/121:58:001
2899210821,66sleep32929-21fschecks_count21:52:583
2724821087,38sleep10-21swapper/121:27:491
2114521080,13sleep20-21swapper/200:33:022
16841210826,57sleep216860-21apt-get22:37:482
16841210826,57sleep216860-21apt-get22:37:482
1768210715,17sleep00-21swapper/023:32:550
30350210616,74sleep230355-21sort21:37:472
1376921066,32sleep10-21swapper/100:08:081
1376921066,32sleep10-21swapper/100:08:081
30635210411,76sleep030679-21date23:22:380
2272721048,29sleep10-21swapper/122:57:001
2146021045,28sleep10-21swapper/119:27:401
1561521046,30sleep10-21swapper/120:50:151
1550521047,29sleep10-21swapper/100:14:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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