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2025-12-02 - 03:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot7s.osadl.org (updated Tue Dec 02, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1776210390,9sleep30-21swapper/319:08:583
1854210288,9sleep10-21swapper/119:09:561
160128565,15sleep20-21swapper/219:06:452
179328370,9sleep00-21swapper/019:09:110
261762610,0sleep30-21swapper/322:15:373
1945993231,1cyclictest0-21swapper/322:02:383
194599321,2cyclictest14060-21gltestperf23:15:183
1945993129,1cyclictest0-21swapper/322:33:183
1945993029,1cyclictest0-21swapper/323:35:183
1945993028,1cyclictest9838-21ssh22:26:583
1945993028,1cyclictest0-21swapper/323:20:383
193299300,1cyclictest0-21swapper/021:20:000
194599290,29cyclictest0-21swapper/321:54:383
194399290,28cyclictest0-21swapper/221:51:452
1945992826,1cyclictest13747-21ssh22:07:383
1945992826,1cyclictest0-21swapper/322:13:583
193299281,25cyclictest1708-21sh21:15:000
193299280,27cyclictest0-21swapper/022:24:450
1945992726,1cyclictest0-21swapper/322:24:383
1945992725,1cyclictest0-21swapper/322:58:183
193299270,23cyclictest32756-21timerwakeupswit21:35:260
193299270,1cyclictest27216-21diskmemload23:18:400
193299270,1cyclictest0-21swapper/021:41:520
1945992625,1cyclictest0-21swapper/323:42:583
1945992625,1cyclictest0-21swapper/322:49:583
194399260,26cyclictest0-21swapper/222:55:552
193299261,24cyclictest27216-21diskmemload00:17:070
193299260,21cyclictest27216-21diskmemload21:30:080
1945992524,1cyclictest0-21swapper/323:49:383
1945992524,1cyclictest0-21swapper/323:07:583
1945992524,1cyclictest0-21swapper/300:13:583
194399250,25cyclictest0-21swapper/222:52:392
1945992423,1cyclictest0-21swapper/300:34:183
1945992423,1cyclictest0-21swapper/300:34:183
193899244,12cyclictest0-21swapper/100:10:151
193299246,17cyclictest136692sleep000:25:130
193299241,22cyclictest0-21swapper/022:25:190
193299240,23cyclictest27216-21diskmemload22:42:040
193299240,1cyclictest27216-21diskmemload22:15:530
193299240,1cyclictest0-21swapper/023:13:180
1945992322,1cyclictest0-21swapper/323:11:383
1945992322,1cyclictest0-21swapper/322:42:183
1945992322,1cyclictest0-21swapper/300:19:383
194399230,23cyclictest0-21swapper/222:15:482
193299232,20cyclictest27216-21diskmemload23:04:380
193299231,21cyclictest27216-21diskmemload23:35:510
193299231,21cyclictest0-21swapper/022:30:150
193299231,20cyclictest26056-21ssh00:10:080
193299230,22cyclictest27216-21diskmemload21:50:250
193299230,18cyclictest27216-21diskmemload23:48:450
1945992221,1cyclictest0-21swapper/323:58:183
1945992221,1cyclictest0-21swapper/323:54:583
1945992221,1cyclictest0-21swapper/321:10:383
1945992221,1cyclictest0-21swapper/300:22:383
194399222,19cyclictest24300-21apt-get23:00:162
194399220,22cyclictest0-21swapper/200:03:312
193299222,19cyclictest16496-21basename19:40:000
193299222,18cyclictest27216-21diskmemload21:24:420
193299221,20cyclictest26801-21aten2_r7power_v00:35:160
193299220,2cyclictest0-21swapper/023:20:120
193299220,1cyclictest0-21swapper/023:42:420
193299220,1cyclictest0-21swapper/023:06:460
193299220,0cyclictest0-21swapper/022:00:130
194399210,21cyclictest0-21swapper/221:17:102
1938992111,10cyclictest0-21swapper/122:18:161
193299213,17cyclictest27216-21diskmemload23:26:310
193299212,18cyclictest23207-21http21:30:000
193299212,15cyclictest0-21swapper/000:34:010
193299212,15cyclictest0-21swapper/000:34:010
193299211,18cyclictest3497-21latency23:30:210
193299211,18cyclictest27262-21cat21:10:000
193299210,20cyclictest0-21swapper/022:10:320
193299210,1cyclictest0-21swapper/022:55:180
193299210,1cyclictest0-21swapper/019:55:150
193299210,19cyclictest11155-21latency22:50:190
193299210,19cyclictest0-21swapper/023:57:380
193299210,0cyclictest0-21swapper/023:50:220
194399200,1cyclictest0-21swapper/223:33:122
193299202,17cyclictest0-21swapper/000:05:130
193299201,18cyclictest12996-21sh21:45:130
193299201,17cyclictest0-21swapper/000:00:050
193299201,15cyclictest0-21swapper/020:42:560
193299200,1cyclictest14466-21ssh22:08:190
193299200,18cyclictest0-21swapper/021:55:080
193299191,17cyclictest8571-21rm22:49:020
193299190,3cyclictest21144-21expr22:35:170
193299190,15cyclictest7978-21ssh00:20:140
32932181,1sleep23336-21ntp_states19:10:212
1945991816,1cyclictest0-21swapper/300:00:383
194599180,2cyclictest0-21swapper/300:37:083
194399181,16cyclictest29225-21sensors_fan21:10:232
193299181,16cyclictest11616-21date19:30:000
193299181,14cyclictest0-21swapper/020:55:170
193299180,1cyclictest0-21swapper/020:35:140
193299172,14cyclictest18735-21tail20:50:180
193299170,1cyclictest0-21swapper/019:40:280
193299170,1cyclictest0-21swapper/019:40:280
194399168,6cyclictest10041-21tune2fs21:20:172
194399163,4cyclictest31786-21munin-run00:40:002
1943991614,2cyclictest0-21swapper/200:08:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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