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2025-11-10 - 15:41

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 Nov 10, 2025 12:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175532711713,7091sleep017363-21kworker/0:211:28:500
90702398010,3950sleep36953-21kworker/u8:109:19:313
15672210124,974sleep32666-1kworker/3:0H09:39:423
15672210124,974sleep32666-1kworker/3:0H09:39:423
4499279017,758sleep24527-21users10:44:552
4499279017,758sleep24527-21users10:44:552
19036276017,726sleep119107-21/usr/sbin/munin07:59:371
24437251910,451sleep324490-21fschecks_count11:49:413
18754250625,465sleep218756-21/usr/sbin/munin09:49:392
18754250625,465sleep218756-21/usr/sbin/munin09:49:392
16419246988,201sleep30-21swapper/311:24:413
20221236312,335sleep220242-21apt-get09:54:312
312223570,8sleep30-21swapper/312:24:443
28850227855,201sleep328884-21proc_pri08:30:003
4465224158,103sleep34497-21munin-run07:14:193
985222921,22sleep30-21swapper/307:04:223
20622222870,57sleep30-21swapper/309:54:453
15171221975,127sleep315307-21gpgv09:39:223
18855221710,193sleep318996-21modprobe07:59:223
9052220724,126sleep30-21swapper/310:59:533
293021797,159sleep32966-21ntpq08:59:443
12569217713,144sleep312610-21ntp_kernel_err09:29:453
12569217713,144sleep312610-21ntp_kernel_err09:29:453
68821687,10sleep30-21swapper/312:15:333
14491216822,55sleep30-21swapper/307:44:403
30790216215,59sleep30-21swapper/308:39:373
24085215850,56sleep30-21swapper/308:14:453
3122921578,87sleep30-21swapper/312:09:513
526921559,128sleep35361-21fschecks_time10:49:403
526921559,128sleep35361-21fschecks_time10:49:403
12309215310,129sleep312417-21timerwakeupswit11:10:073
2372321509,119sleep30-21swapper/310:05:113
3029521487,127sleep330329-21ps10:24:493
749421418,12sleep20-21swapper/207:19:562
592214023,46sleep3623-21grep08:49:423
22133214052,50sleep322149-21cpu08:09:363
16625214012,48sleep316761-21grep07:49:533
410421397,120sleep34108-21acpi09:04:323
410421397,120sleep34108-21acpi09:04:323
13971213620,61sleep30-21swapper/307:43:113
6836213155,36sleep36909-21grep10:54:413
3948212619,86sleep04100-21sed07:09:520
7087212548,19sleep30-21swapper/309:14:223
184021259,56sleep31991-21sed10:39:223
1608221257,17sleep316091-21munin-run11:24:203
22266212414,47sleep322289-21munin-run11:44:203
27999212311,51sleep30-21swapper/311:59:503
13310212321,81sleep30-21swapper/311:14:393
2930921209,46sleep30-21swapper/312:04:433
2930921209,46sleep30-21swapper/312:04:433
31782211910,47sleep331825-21ntpq10:29:463
562821186,11sleep30-21swapper/312:30:593
562821186,11sleep30-21swapper/312:30:593
29040211822,76sleep029041-21cpu12:04:360
29040211822,76sleep029041-21cpu12:04:360
28680211843,27sleep30-21swapper/310:19:443
723421178,51sleep37360-21timerwakeupswit07:19:533
5388211622,81sleep15421-21idleruntime-cro09:09:191
5388211622,81sleep15421-21idleruntime-cro09:09:191
21621211526,79sleep3362-21snmpd08:06:293
32192211443,48sleep032230-21grep06:59:390
479321136,11sleep30-21swapper/310:48:113
479321136,11sleep30-21swapper/310:48:113
23018211329,70sleep323066-21cat11:45:083
5696211175,19sleep30-21swapper/307:15:003
2274211152,21sleep32318-21cat10:39:433
9948211012,83sleep110010-21wc07:29:441
231721105,10sleep30-21swapper/307:06:563
231721105,10sleep30-21swapper/307:06:563
18671211051,16sleep30-21swapper/309:49:363
18671211051,16sleep30-21swapper/309:49:363
2591210730,63sleep32642-21wc12:24:213
22768210618,72sleep222280-21apt-get11:44:312
14858210615,78sleep014934-21systemctl07:44:500
18147210540,50sleep30-21swapper/311:29:423
17478210517,72sleep117514-21cpu07:54:361
12421210555,32sleep012562-21/usr/sbin/munin11:10:080
26559210422,17sleep30-21swapper/310:14:233
24909210434,29sleep10-21swapper/110:09:211
11255210425,67sleep311292-21grep07:34:393
2647210212,74sleep02797-21modprobe12:24:220
2058121026,10sleep30-21swapper/311:37:333
454121010,7sleep10-21swapper/112:29:221
454121010,7sleep10-21swapper/112:29:221
2992921015,11sleep30-21swapper/308:34:403
12239210113,76sleep212308-21switchtime11:10:062
10800210133,26sleep30-21swapper/309:24:443
2817129823,47sleep128302-21grep11:59:521
279932988,34sleep30-21swapper/308:28:143
1392429822,45sleep014072-21grep11:14:530
1040429821,61sleep210548-21unixbench_singl07:29:532
2661429712,46sleep326770-21latency_hist08:24:223
2079229714,64sleep020858-21/usr/sbin/munin09:54:500
137029618,55sleep21403-21fschecks_count12:19:392
1353829614,66sleep013665-21latency_hist09:34:220
1353829614,66sleep013665-21latency_hist09:34:220
1015429616,19sleep30-21swapper/307:29:503
277542955,34sleep30-21swapper/310:16:133
2690529515,63sleep126989-21fschecks_time08:24:411
820529418,48sleep00-21swapper/007:24:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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