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2026-08-03 - 08:59

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 50 highest latencies:
System rackbslot7s.osadl.org (updated Mon Aug 03, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187872796125,7925sleep317219-21kworker/3:021:00:263
62072279112,2766sleep018363-1kworker/0:1H22:02:500
138882169319,1659sleep326563-1kworker/3:0H00:07:583
126432137511,1352sleep018363-1kworker/0:1H22:22:450
7229296717,933sleep07231-21ntp_states20:23:000
7229296717,933sleep07231-21ntp_states20:23:000
7567269410,672sleep37613-21ntpq23:48:033
16155262821,529sleep316294-21grep00:13:073
19457255928,514sleep219514-21/usr/sbin/munin21:02:562
9762245210,426sleep19768-21ntpq22:13:001
13377228614,258sleep113412-21ntpq20:43:001
13088226822,187sleep313102-21fschecks_count20:42:543
2312022380,7sleep20-21swapper/221:14:212
1869322247,203sleep318765-21sh19:17:343
1311222118,190sleep21422-21sed23:28:042
1311222118,190sleep21422-21sed23:28:042
14306221822,177sleep314337-21fschecks_count22:27:523
19515221112,149sleep319551-21latency21:02:573
22650220933,138sleep322797-21grep00:33:103
22650220933,138sleep322797-21grep00:33:103
21765220944,114sleep30-21swapper/322:52:353
27098220454,137sleep327221-21latency_hist21:27:363
18544220321,60sleep30-21swapper/300:22:443
13384220313,65sleep313522-21unixbench_multi22:23:283
8118220151,84sleep30-21swapper/320:27:363
8118220151,84sleep30-21swapper/320:27:363
31110219835,144sleep331144-21ps21:38:063
32112219729,43sleep30-21swapper/319:58:083
24846219559,66sleep324850-21modprobe23:02:333
881521918,46sleep38888-21tr20:28:043
11096216962,40sleep30-21swapper/322:17:553
17855216240,103sleep317933-21mailstats22:38:023
17855216240,103sleep317933-21mailstats22:38:023
12709216210,138sleep312739-21awk20:42:343
1185215927,45sleep30-21swapper/320:03:053
2896721578,67sleep328449-21/usr/sbin/munin23:13:033
7462215412,129sleep37496-21idleruntime-cro22:07:333
23879215330,64sleep323936-21unin-run21:17:343
699215231,58sleep30-21swapper/323:27:483
699215231,58sleep30-21swapper/323:27:483
5015215072,34sleep34384-21/usr/sbin/munin21:58:043
1948121508,82sleep319563-21switchtime22:43:023
4657214711,122sleep00-21swapper/020:14:240
27819214554,24sleep30-21swapper/321:28:043
1744521458,78sleep317552-21latency_hist20:57:363
8276214112,73sleep38352-21cut22:08:023
11212214026,56sleep311247-21cat23:58:053
26425213917,96sleep026578-21grep21:23:090
14308213917,109sleep014346-21cat20:47:350
25454213725,74sleep30-21swapper/323:02:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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