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2026-07-22 - 05:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Wed Jul 22, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17363522120,2sleep3481ktimers/323:37:473
4099849996354,6cyclictest4099699-21latency_hist19:10:011
4099847995142,6cyclictest56408-21latency_hist21:40:010
4099847995044,4cyclictest66116-21kworker/u8:0+events_unbound21:55:010
4099849994939,7cyclictest278-21systemd-journal21:05:021
4099849994436,6cyclictest66298-21latency_hist21:50:011
4099849994436,6cyclictest278-21systemd-journal21:07:441
4099847994438,4cyclictest66116-21kworker/u8:0+flush-8:000:05:010
4099847994434,8cyclictest4175930-21apt-get20:25:000
4099847994432,5cyclictest76238-21kworker/u8:2+events_unbound22:32:570
4099849994236,5cyclictest4099724-21kworker/u8:2+flush-8:020:12:431
4099849994133,6cyclictest278-21systemd-journal19:42:441
4099849994132,6cyclictest195132-21latency_hist00:00:011
1908302410,3chrt577-21kworker/3:2-events23:57:413
4099849994032,6cyclictest169885-21kworker/u8:1+flush-8:000:37:521
4099849993834,3cyclictest3272820-21kworker/u8:3+flush-8:019:37:431
4099849993833,4cyclictest4085034-21kworker/u8:1+flush-8:019:47:431
4099849993829,6cyclictest278-21systemd-journal20:52:441
4099847993833,4cyclictest3272820-21kworker/u8:3+flush-8:020:07:420
4099847993830,6cyclictest17271-21apt-get21:02:390
4099847993829,7cyclictest4121953-21/usr/sbin/munin19:32:500
4099849993732,4cyclictest4085034-21kworker/u8:1+flush-8:019:32:581
4099849993732,3cyclictest102337-21irqrtprio22:27:451
4099847993732,3cyclictest26537-21kworker/u8:2+events_unbound21:17:420
2312832370,9sleep239-21ksoftirqd/200:37:442
4099852993627,7cyclictest224819-21apt-get00:30:002
4099849993630,4cyclictest4171416-21apt-get20:22:391
4099847993629,5cyclictest170862-21apt-get23:37:370
4099849993526,6cyclictest4146253-21latency_hist19:55:011
4099847993531,3cyclictest3272820-21kworker/u8:3+flush-8:020:42:460
4099847993531,3cyclictest3272820-21kworker/u8:3+flush-8:020:42:460
4099847993525,9cyclictest86150-21systemd-run22:10:000
4099849993430,2cyclictest170401-21cron23:35:001
4099849993427,5cyclictest96469-21apt-get22:22:381
4099849993427,5cyclictest4085034-21kworker/u8:1+events_unbound19:27:521
4099849993425,7cyclictest44897-21kworker/u8:1+events_unbound21:52:571
4099847993430,3cyclictest4099724-21kworker/u8:2+flush-8:020:12:550
4099849993327,5cyclictest44897-21kworker/u8:1+flush-8:021:42:441
4099849993326,5cyclictest4151209-21latency_hist20:00:011
4099849993325,6cyclictest86579-21apt-get22:12:411
4099849993325,6cyclictest86579-21apt-get22:12:411
4099849993325,6cyclictest44897-21kworker/u8:1+flush-8:022:37:541
4099849993228,3cyclictest4146096-21kworker/u8:0+flush-8:020:57:581
4099849993226,5cyclictest155403-21kworker/u8:3+flush-8:023:22:581
4099849993226,4cyclictest169885-21kworker/u8:1+events_unbound00:12:561
4099849993222,8cyclictest4185377-21ntpq20:32:551
4099847993226,4cyclictest61926-21aten2_r5power_v21:47:410
4099847993225,5cyclictest135868-21kworker/u8:1+flush-8:023:02:440
409984799322,25cyclictest140800-21kworker/0:2+events00:10:230
4099852993127,3cyclictest4131442-21sendmail19:40:002
4099849993127,3cyclictest395-21dbus-daemon23:40:001
4099849993126,4cyclictest21170-21cron00:25:001
4099849993126,3cyclictest199894-21unixbench_multi00:02:571
4099847993126,4cyclictest278-21systemd-journal19:45:000
4099847993123,6cyclictest7828-21sshd20:52:440
409984799312,24cyclictest6930-21kworker/0:1+events22:51:000
409984799311,25cyclictest140800-21kworker/0:2+events23:31:070
409984799311,25cyclictest140800-21kworker/0:2+events00:25:030
4099849993026,3cyclictest66116-21kworker/u8:0+events_unbound23:12:411
4099849993025,4cyclictest26537-21kworker/u8:2+events_unbound21:17:531
4099849993025,3cyclictest0-21swapper/100:30:011
4099849993024,4cyclictest155403-21kworker/u8:3+events_unbound00:17:451
409984999301,27cyclictest1-21systemd20:50:011
409984999301,27cyclictest1-21systemd20:50:001
4099847993026,3cyclictest155403-21kworker/u8:3+events_unbound00:25:000
409984799301,24cyclictest4094831-21kworker/0:2+events19:20:070
409984799300,25cyclictest6930-21kworker/0:1+events21:31:270
4099849992925,2cyclictest0-21swapper/120:40:001
4099849992924,3cyclictest400-21mta-sts-daemon23:52:451
4099849992924,3cyclictest145496-21unixbench_multi23:08:001
4099849992924,3cyclictest139709-21kthreadcore23:02:501
4099849992922,5cyclictest51465-21cron21:35:001
4099849992921,6cyclictest76196-21latency_hist22:00:001
4099847992924,4cyclictest155403-21kworker/u8:3+events_unbound23:20:000
4099847992924,3cyclictest124470-21kworker/u8:3+events_unbound22:50:010
4099847992923,4cyclictest229990-21latency_hist00:35:010
409984799292,26cyclictest4094831-21kworker/0:2+events19:45:030
409985299280,9cyclictest146830-21irqcore23:12:442
409984999289,5cyclictest0-21swapper/120:44:281
409984999289,5cyclictest0-21swapper/120:44:271
4099849992824,2cyclictest0-21swapper/119:12:441
4099847992824,3cyclictest101150-21awk22:25:010
4099847992824,2cyclictest81193-21systemd-run22:05:000
4099847992820,6cyclictest278-21systemd-journal19:30:000
409984799280,27cyclictest22594-21sshd21:07:440
4099852992724,2cyclictest166261-21fschecks_time23:32:422
4099849992723,3cyclictest3272820-21kworker/u8:3+flush-8:021:13:011
4099849992723,2cyclictest111133-21systemd-run22:35:011
4099849992722,4cyclictest3272820-21kworker/u8:3+flush-8:020:17:541
4099849992721,4cyclictest95791-21unixbench_singl22:17:581
4099849992721,4cyclictest95791-21unixbench_singl22:17:581
409984799272,24cyclictest140800-21kworker/0:2+events23:56:030
409984799272,24cyclictest140800-21kworker/0:2+events23:05:150
4099847992722,3cyclictest4190984-21cron20:40:000
4099847992721,4cyclictest190383-21latency_hist23:55:000
4099847992718,6cyclictest205080-21latency_hist00:10:010
409984799271,25cyclictest140800-21kworker/0:2+events23:44:550
4099852992622,2cyclictest200945-21fschecks_time00:07:432
4099852992620,4cyclictest76238-21kworker/u8:2+flush-8:022:05:002
4099849992622,3cyclictest44897-21kworker/u8:1+events_unbound22:47:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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