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2024-09-19 - 22:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 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 50 highest latencies:
System rack7slot3s.osadl.org (updated Thu Sep 19, 2024 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2732522530,1sleep10-21swapper/107:09:021
185912860,3sleep318587-21fschecks_time10:18:533
95702850,2sleep10-21swapper/112:23:501
78062840,4sleep37797-21if_wlan009:13:563
114152830,3sleep111417-21proc_pri07:54:001
28303997511,27cyclictest0-21swapper/010:33:430
2830399733,32cyclictest0-21swapper/009:38:490
281002730,3sleep30-21swapper/307:13:373
159292710,1sleep20-21swapper/211:49:012
2830399671,38cyclictest17658-21modprobe08:13:370
28303996527,6cyclictest0-21swapper/007:58:470
28303996424,7cyclictest101ktimersoftd/009:43:480
272842636,9sleep00-21swapper/007:09:020
28303995926,8cyclictest0-21swapper/008:28:490
28303995828,14cyclictest7950irq/56-dwc_otg12:04:050
178912570,2sleep00-21swapper/008:13:480
178912570,2sleep00-21swapper/008:13:480
2830399557,42cyclictest4750irq/17-3f00b88010:33:070
2830399551,44cyclictest29331-21/usr/sbin/munin11:23:500
28303995427,14cyclictest0-21swapper/010:00:500
28303995422,9cyclictest5266-21chrt12:18:380
28303995334,5cyclictest7950irq/56-dwc_otg07:29:050
28303995235,10cyclictest101ktimersoftd/008:18:510
28303995227,10cyclictest1384-21latency_hist07:28:370
28303995219,8cyclictest0-21swapper/009:13:500
2830399521,48cyclictest0-21swapper/007:48:500
2830399521,33cyclictest6244-21ssh12:19:010
2830399521,30cyclictest0-21swapper/011:53:510
28303995139,3cyclictest0-21swapper/007:54:040
2830399512,6cyclictest29616-21kworker/0:107:18:380
2830399511,47cyclictest12274-21latency_hist10:58:370
28303995110,23cyclictest0-21swapper/010:14:080
2830399504,19cyclictest9-21ksoftirqd/010:03:480
28303995033,4cyclictest7950irq/56-dwc_otg10:43:530
28303995029,6cyclictest7950irq/56-dwc_otg11:08:500
28303995025,7cyclictest20427-21sh10:21:070
2830399502,38cyclictest21688-21kworker/0:209:38:140
2830399502,29cyclictest0-21swapper/009:33:370
2830399502,29cyclictest0-21swapper/009:33:370
28303995022,17cyclictest0-21swapper/011:49:040
28303994926,6cyclictest7950irq/56-dwc_otg09:24:060
2830399492,44cyclictest6802-21sh07:43:360
28303994921,15cyclictest3757-21wc09:03:520
2830399491,7cyclictest30228-21/usr/sbin/munin07:18:490
2830399491,30cyclictest13-21rcuc/008:23:560
28306994818,27cyclictest1436850wget08:03:493
2830399489,25cyclictest0-21swapper/011:13:570
28303994837,5cyclictest11866-21cut10:08:540
28303994827,6cyclictest7950irq/56-dwc_otg12:39:050
28303994827,5cyclictest13607-21ssh12:28:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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