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2026-04-29 - 19:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Wed Apr 29, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20062119108,6sleep20-21swapper/207:08:422
20402115104,6sleep30-21swapper/307:09:073
1400211498,11sleep10-21swapper/107:06:001
2096211291,16sleep00-21swapper/007:09:480
54812820,1sleep00-21swapper/008:35:160
139642740,1sleep213965-21sh08:56:022
2143993717,18cyclictest0-21swapper/208:05:132
214299360,2cyclictest0-21swapper/107:55:121
2142993213,1cyclictest0-21swapper/107:20:111
2142993213,1cyclictest0-21swapper/107:20:111
214499290,2cyclictest0-21swapper/309:45:123
214499251,2cyclictest0-21swapper/307:55:123
87172230,1sleep1221ktimersoftd/107:25:141
214299231,16cyclictest0-21swapper/112:30:041
214299230,2cyclictest0-21swapper/111:26:041
214299225,2cyclictest4824-21apt-get09:30:041
214199221,19cyclictest0-21swapper/009:10:110
214199220,13cyclictest0-21swapper/008:10:170
214499210,19cyclictest0-21swapper/309:00:113
2143992118,2cyclictest28464-21kworker/u8:208:18:002
2141992111,8cyclictest0-21swapper/009:35:170
214199210,2cyclictest8789-21apt-get08:45:110
214199210,2cyclictest0-21swapper/012:30:270
214199210,2cyclictest0-21swapper/012:24:030
214199210,2cyclictest0-21swapper/012:18:450
214199210,2cyclictest0-21swapper/012:08:350
214199210,2cyclictest0-21swapper/011:00:350
214199210,2cyclictest0-21swapper/010:38:350
214199210,2cyclictest0-21swapper/010:30:190
214199210,2cyclictest0-21swapper/010:28:270
214199210,2cyclictest0-21swapper/010:12:350
214199210,2cyclictest0-21swapper/009:30:390
214199210,2cyclictest0-21swapper/009:27:190
214199210,19cyclictest0-21swapper/010:54:370
214199210,19cyclictest0-21swapper/009:45:160
2143992017,2cyclictest8914-21kworker/u8:012:35:042
2143992017,2cyclictest21428-21kworker/u8:109:57:032
2143992017,2cyclictest11827-21kworker/u8:109:08:032
2142992017,2cyclictest6775-21kworker/u8:108:44:041
2142992017,2cyclictest29822-21kworker/u8:107:11:041
2142992017,2cyclictest20344-21kworker/u8:108:02:041
214299200,2cyclictest0-21swapper/108:25:121
214199200,2cyclictest22661-21ssh10:23:270
214199200,2cyclictest0-21swapper/012:36:230
214199200,2cyclictest0-21swapper/012:26:430
214199200,2cyclictest0-21swapper/012:10:070
214199200,2cyclictest0-21swapper/012:02:030
214199200,2cyclictest0-21swapper/011:55:390
214199200,2cyclictest0-21swapper/011:53:350
214199200,2cyclictest0-21swapper/011:46:590
214199200,2cyclictest0-21swapper/011:41:110
214199200,2cyclictest0-21swapper/011:35:190
214199200,2cyclictest0-21swapper/011:30:550
214199200,2cyclictest0-21swapper/011:26:190
214199200,2cyclictest0-21swapper/011:23:150
214199200,2cyclictest0-21swapper/011:15:150
214199200,2cyclictest0-21swapper/011:12:030
214199200,2cyclictest0-21swapper/011:06:350
214199200,2cyclictest0-21swapper/010:57:350
214199200,2cyclictest0-21swapper/010:45:470
214199200,2cyclictest0-21swapper/010:40:470
214199200,2cyclictest0-21swapper/010:15:030
214199200,2cyclictest0-21swapper/010:08:310
214199200,2cyclictest0-21swapper/010:00:070
214199200,2cyclictest0-21swapper/009:55:110
214199200,2cyclictest0-21swapper/009:50:470
214199200,2cyclictest0-21swapper/009:42:230
214199200,2cyclictest0-21swapper/009:20:020
214199200,2cyclictest0-21swapper/009:16:510
214199200,2cyclictest0-21swapper/007:10:150
214199200,18cyclictest16836-21munin-node0
214199200,18cyclictest0-21swapper/007:35:170
214499191,2cyclictest0-21swapper/308:25:123
2143991916,2cyclictest7270-21kworker/u8:211:18:042
2143991916,2cyclictest31625-21kworker/u8:011:08:042
2143991916,2cyclictest28798-21kworker/u8:211:47:042
2143991916,2cyclictest2252-21kworker/u8:208:34:042
2143991916,2cyclictest20344-21kworker/u8:108:25:042
2143991916,2cyclictest20344-21kworker/u8:108:12:012
2143991916,2cyclictest1971-21kworker/u8:207:37:042
2143991916,2cyclictest1971-21kworker/u8:207:18:042
2142991916,2cyclictest7270-21kworker/u8:211:19:041
2142991916,2cyclictest4417-21kworker/u8:008:37:041
2142991916,2cyclictest31625-21kworker/u8:011:20:041
2142991916,2cyclictest28464-21kworker/u8:208:18:051
2142991916,2cyclictest2729-21kworker/u8:110:52:041
2142991916,2cyclictest11827-21kworker/u8:109:23:061
214299191,2cyclictest23-21ksoftirqd/111:34:041
214299191,2cyclictest0-21swapper/111:13:031
214299191,2cyclictest0-21swapper/110:20:041
214299190,15cyclictest0-21swapper/109:26:041
214199190,2cyclictest0-21swapper/008:55:190
214199190,2cyclictest0-21swapper/008:41:030
214199190,2cyclictest0-21swapper/008:30:150
214199190,2cyclictest0-21swapper/008:25:190
214199190,2cyclictest0-21swapper/008:05:140
214199190,2cyclictest0-21swapper/008:00:110
214199190,2cyclictest0-21swapper/007:30:590
2143991815,2cyclictest7620-21kworker/u8:310:47:042
2143991815,2cyclictest6775-21kworker/u8:108:41:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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