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2026-01-04 - 05:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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.

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 376 highest latencies:
System rack2slot7s.osadl.org (updated Sat Jan 03, 2026 19:55:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2337150995337,13cyclictest2469321-21spawn17:34:542
2337149995345,5cyclictest3138669-21sh18:10:011
2337149995344,5cyclictest2559948-21sh17:40:011
2337150995243,6cyclictest3136234-21rm18:09:542
2337150995138,9cyclictest2642908-21execl17:49:552
2337149995041,5cyclictest3168303-21multi.sh18:11:121
2337150994840,5cyclictest3200832-21sh18:12:292
2337150994739,5cyclictest2645431-21sort17:55:012
2337150994739,5cyclictest2343089-21kworker/u8:6+xprtiod17:42:232
2337150994739,5cyclictest2343089-21kworker/u8:6+xprtiod17:42:232
2337148994740,4cyclictest3148120-21multi.sh18:10:240
2337148994532,10cyclictest3068697-21sh18:07:120
2337149994436,5cyclictest2567056-21sh17:40:301
2337149994436,5cyclictest2567056-21sh17:40:301
2337148994436,6cyclictest2558762-21tee17:39:550
2337148994435,7cyclictest2643487-21needreboot17:49:500
2337150994336,4cyclictest2560018-21sh17:40:012
2337150994334,6cyclictest3011489-21spawn18:04:182
2337148994336,4cyclictest2605244-21sh17:42:040
2337148994336,4cyclictest2605244-21sh17:42:040
2337150994029,7cyclictest2646031-21pipe17:58:392
2337150994029,7cyclictest2646031-21pipe17:58:392
2337149994032,5cyclictest2772040-21spawn18:03:191
2337149994032,5cyclictest2338650-21grep17:10:001
2337149994032,5cyclictest2337205-21systemd-run17:05:011
2337149993931,6cyclictest2645961-21fstime17:56:101
2337149993931,6cyclictest2645961-21fstime17:56:101
2337149993931,5cyclictest2644351-21Run17:50:081
2337149993931,5cyclictest2642907-21execl17:49:521
2337148993932,5cyclictest2679372-21spawn18:02:580
2337150993732,2cyclictest0-21swapper/218:20:012
2337150993730,4cyclictest2344927-21sed17:30:012
2337150993628,6cyclictest2341860-21unixbench_singl17:20:022
2337149993629,4cyclictest2342130-21kworker/u8:1-rpciod17:23:241
2337149993626,5cyclictest2469321-21spawn17:34:561
2337149993611,9cyclictest28-21ksoftirqd/118:39:531
2337148993630,4cyclictest3222334-21unixbench-2d18:40:000
2337150993530,2cyclictest0-21swapper/217:15:012
2337150993529,3cyclictest0-21swapper/218:40:002
2337150993527,5cyclictest2337183-21tail17:05:012
2337149993524,8cyclictest2340154-21latency_hist17:15:011
2337148993529,4cyclictest2506652-21spawn17:34:530
2337150993426,5cyclictest3218284-21sshd18:26:142
2337150993426,5cyclictest1-21systemd18:25:022
2337149993425,7cyclictest3220894-21unixbench_multi18:35:011
2337148993428,4cyclictest2645720-21unixbench_multi17:55:030
2337150993327,3cyclictest0-21swapper/217:25:012
2337149993328,2cyclictest0-21swapper/118:20:011
2337149993323,8cyclictest2341226-21needreboot17:19:501
2337148993324,6cyclictest0-21swapper/017:10:000
2337148993320,8cyclictest2343693-21fstime17:28:230
2337150993223,6cyclictest563-21avahi-daemon17:07:062
2337148993221,8cyclictest0-21swapper/018:20:010
2337148993220,9cyclictest564-21dbus-daemon17:57:040
2337148993220,9cyclictest564-21dbus-daemon17:57:040
2337148993220,9cyclictest2343021-21cron17:25:010
2337148993124,4cyclictest1026348-21cups-browsed17:12:360
2337149993021,6cyclictest3217141-21fschecks_count18:24:451
233714999296,16cyclictest1167-21mta-sts-daemon17:29:551
233714999292,19cyclictest1026348-21cups-browsed18:29:551
2337148992824,2cyclictest0-21swapper/018:35:010
2337148992722,3cyclictest564-21dbus-daemon17:20:010
2337150992620,3cyclictest0-21swapper/218:35:012
2337148992619,5cyclictest0-21swapper/018:25:010
2337148992512,10cyclictest0-21swapper/018:29:550
233714899246,9cyclictest0-21swapper/017:05:000
233715299233,12cyclictest0-21swapper/317:49:523
233715299225,11cyclictest0-21swapper/317:56:143
233715299225,11cyclictest0-21swapper/317:56:143
233715299223,11cyclictest0-21swapper/317:39:533
233715299223,10cyclictest0-21swapper/318:03:543
233715299204,9cyclictest0-21swapper/318:09:463
233715299203,11cyclictest0-21swapper/317:53:363
233715299195,6cyclictest0-21swapper/317:24:573
233715299192,10cyclictest0-21swapper/317:34:503
233715299183,11cyclictest0-21swapper/318:11:273
233715299183,10cyclictest0-21swapper/317:40:033
233715299183,10cyclictest0-21swapper/317:40:033
233715299172,8cyclictest0-21swapper/317:09:503
233715299172,7cyclictest0-21swapper/318:24:513
233715299163,8cyclictest0-21swapper/317:15:023
233715299152,8cyclictest0-21swapper/317:05:013
233715299152,7cyclictest0-21swapper/318:19:513
233715299151,8cyclictest0-21swapper/318:34:543
233715299151,8cyclictest0-21swapper/318:30:013
233715299141,8cyclictest0-21swapper/318:39:523
233715299132,7cyclictest0-21swapper/317:19:523
233715299111,5cyclictest0-21swapper/317:26:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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