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2024-07-19 - 05:20

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 Fri Jul 19, 2024 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311612150913,1479sleep019802-21kworker/u8:120:51:330
132262122730,1140sleep325422-1kworker/3:1H21:36:473
984329378,913sleep012744-1kworker/0:1H21:26:340
2623928519,827sleep210000-1kworker/2:1H20:36:332
3175260513,578sleep03200-21ntpq22:46:450
14862246270,27sleep30-21swapper/320:01:333
3195724346,413sleep331993-21ntpq00:16:453
1189124056,382sleep211935-21ntpq19:51:422
548823867,365sleep126384-21kworker/1:122:54:371
24802237510,353sleep024812-21ntpq22:11:450
30781237495,224sleep3313-21rs:main3
6181234026,176sleep36217-21cat22:56:413
21068226324,178sleep30-21swapper/322:01:393
17964225418,189sleep318006-21fschecks_count21:51:373
17964225418,189sleep318006-21fschecks_count21:51:373
6273224794,18sleep30-21swapper/321:16:243
28632224695,63sleep327078-21cyclictest19:06:253
232032227102,106sleep3288-21dbus-daemon23:51:213
3132122269,200sleep331402-21mailstats19:11:503
3132122269,200sleep331402-21mailstats19:11:503
1953422159,192sleep319634-21grep21:56:423
1953422159,192sleep319634-21grep21:56:423
5736221312,184sleep25879-21modprobe22:56:242
14595220412,175sleep314808-21sed20:01:253
6714220115,172sleep26823-21perl19:36:442
27050219342,73sleep327217-21latency_hist19:01:243
27050219342,73sleep327217-21latency_hist19:01:243
2027121925,143sleep00-21swapper/023:41:240
2027121925,143sleep00-21swapper/023:41:240
14952218316,146sleep314974-21basename23:26:213
801121819,160sleep38086-21cat23:01:503
801121819,160sleep38086-21cat23:01:503
4841217110,145sleep34905-21awk22:51:493
21421217111,146sleep321511-21fschecks_time20:21:403
208582169112,18sleep30-21swapper/323:41:483
208582169112,18sleep30-21swapper/323:41:483
31484216613,56sleep30-21swapper/322:31:543
24862216693,16sleep30-21swapper/322:11:483
2322821579,130sleep30-21swapper/322:07:003
28713215675,32sleep327078-21cyclictest00:06:433
17981215612,130sleep018000-21apt-get20:11:350
3116821548,80sleep331155-21apt-get20:51:363
11793215111,126sleep011851-21latency19:51:400
9538214429,76sleep39754-21latency_hist21:26:253
16580214410,17sleep30-21swapper/321:46:443
15594214225,95sleep315632-21fschecks_count23:27:023
11938214011,114sleep312086-21latency_hist23:16:243
3522213916,90sleep30-21swapper/322:46:523
3014213910,106sleep30-21swapper/319:26:233
23291213613,43sleep123349-21cut23:51:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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