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2025-10-25 - 23:28

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 Sat Oct 25, 2025 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103242645320,6421sleep28246-21kworker/2:108:10:372
5575278517,752sleep35639-21/usr/sbin/munin07:55:323
5575278517,752sleep35639-21/usr/sbin/munin07:55:323
20061259845,504sleep120196-21grep10:21:171
24102234344,216sleep124251-21tail12:15:471
24102234344,216sleep124251-21tail12:15:471
26662233113,298sleep326735-21/usr/sbin/munin12:25:393
32458230011,272sleep332476-21/usr/sbin/munin11:00:293
26279229859,199sleep126326-21latency_hist12:25:171
14407229348,42sleep10-21swapper/111:45:431
22460228436,203sleep122511-21latency_hist08:50:181
5607228026,243sleep1362-21snmpd09:37:351
11513223810,183sleep10-21swapper/109:55:481
11513223810,183sleep10-21swapper/109:55:481
26749221220,91sleep10-21swapper/110:41:291
13378221055,99sleep113431-21cpuspeed08:20:381
3267220457,85sleep10-21swapper/109:30:401
22029220152,88sleep10-21swapper/112:10:391
31556219821,152sleep231704-21grep09:16:112
1879121969,147sleep118934-21grep08:35:481
16919219458,52sleep10-21swapper/111:55:161
16919219458,52sleep10-21swapper/111:55:161
20295219048,47sleep10-21swapper/108:40:571
12094218930,119sleep112164-21cat08:15:411
29834218843,56sleep10-21swapper/110:51:021
9418218727,116sleep10-21swapper/109:50:271
9418218727,116sleep10-21swapper/109:50:271
15197218229,112sleep115267-21cat08:25:421
15197218229,112sleep115267-21cat08:25:421
7521217030,99sleep17661-21apt-config09:45:181
7862216725,57sleep10-21swapper/109:45:261
7862216725,57sleep10-21swapper/109:45:261
43221667,147sleep1478-21ntpq11:00:431
7673216411,95sleep10-21swapper/108:00:471
7673216411,95sleep10-21swapper/108:00:471
25490216124,102sleep1362-21snmpd08:59:301
3069121588,92sleep130202-21/usr/sbin/munin07:30:511
3250521577,12sleep00-21swapper/009:20:410
29039215710,52sleep10-21swapper/109:10:371
8442215114,115sleep38469-21cat08:05:173
8442215114,115sleep38469-21cat08:05:173
2690214949,56sleep10-21swapper/109:30:161
23306214823,21sleep10-21swapper/107:10:191
6148214617,113sleep26193-21switchtime07:55:472
6148214617,113sleep26193-21switchtime07:55:472
2362721465,27sleep10-21swapper/110:31:391
29375214427,23sleep20-21swapper/212:35:152
23092214447,54sleep10-21swapper/108:50:421
19219214348,59sleep119283-21mailstats12:00:491
1832921435,93sleep10-21swapper/110:16:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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