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2026-07-07 - 15:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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.

Total number of samples: 50 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 rack9slot8s.osadl.org (updated Tue Jul 07, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501860,0irq/46-4a10000027786-21kworker/0:019:07:090
302669912327,0cyclictest32189-21sendmail-msp19:20:030
302669912227,0cyclictest6916-21sendmail-msp23:40:020
302669911831,0cyclictest5100-21kworker/u2:120:15:020
302669911825,0cyclictest28899-21sshd22:30:260
302669911629,0cyclictest13298-21latency_hist20:50:020
302669911541,0cyclictest94750irq/33-mmc023:42:440
302669911511,0cyclictest23347-21dpkg21:55:070
302669911326,0cyclictest10562-21kworker/u2:320:35:020
302669911324,0cyclictest1699-21apt23:05:010
302669911234,0cyclictest28811-21latency_hist22:30:020
302669911228,0cyclictest9588-21munin-run20:25:020
302669911227,0cyclictest29635-21sshd22:35:270
302669911224,0cyclictest12232-21sshd00:14:380
302669911220,0cyclictest9297-21cron23:55:010
302669911220,0cyclictest26307-21latency_hist22:15:010
302669911127,0cyclictest16803-21sshd21:13:260
302669911125,0cyclictest18664-21apt-key21:25:070
302669911122,0cyclictest13834-21latency_hist00:25:030
302669911121,0cyclictest23150-21apt-get21:55:030
302669911121,0cyclictest21839-21sshd21:45:270
302669910912,0cyclictest9860-21sshd23:58:380
302669910819,0cyclictest30982-21munin-run22:45:000
302669910810,0cyclictest26300-21kworker/u2:422:20:050
302669910742,0cyclictest81950irq/46-4a10000019:30:030
302669910627,0cyclictest4628-21kworker/u2:019:55:010
302669910625,0cyclictest32724-21sshd19:22:030
302669910624,0cyclictest82050irq/47-4a10000023:30:010
302669910624,0cyclictest31011-21munin-node19:15:030
302669910623,0cyclictest17757-21sh21:20:010
302669910622,0cyclictest18522-21awk21:25:010
302669910621,0cyclictest13701-21sshd20:52:260
302669910620,0cyclictest6152-21kworker/u2:220:04:070
302669910527,0cyclictest82050irq/47-4a10000000:40:010
302669910520,0cyclictest27448-21kworker/u2:522:20:370
302669910518,0cyclictest4374-21apt19:50:010
302669910430,0cyclictest4662-21cron23:25:000
302669910429,0cyclictest20182-21apt21:35:010
302669910428,0cyclictest11625-21in:imuxsock23:18:370
302669910426,0cyclictest21214-21chrt21:41:230
302669910421,0cyclictest542-21runrttasks22:57:060
302669910418,0cyclictest2892-21munin-run19:40:020
302669910343,0cyclictest81950irq/46-4a10000000:34:590
302669910325,0cyclictest5501-1kworker/0:0H20:17:230
302669910321,0cyclictest31823-21sshd22:49:270
302669910321,0cyclictest2869-21kworker/u2:219:45:000
302669910321,0cyclictest15127-21kworker/u2:621:05:010
302669910311,0cyclictest25577-21munin-run22:10:010
302669910226,0cyclictest2027-21kworker/u2:223:34:420
302669910224,0cyclictest31561-21kworker/u2:122:50:270
302669910223,0cyclictest15127-21kworker/u2:621:05:430
302669910220,0cyclictest82050irq/47-4a10000000:20:010
302669910212,0cyclictest5346-21sshd19:56:060
302669910124,0cyclictest12477-21sshd20:44:270
302669910121,0cyclictest82050irq/47-4a10000000:30:010
302669910118,0cyclictest82050irq/47-4a10000023:15:010
302669910110,0cyclictest30512-1kworker/u3:219:30:010
302669910025,0cyclictest14371-21runrttasks20:56:550
302669910013,0cyclictest10323-21munin-run20:30:020
30266999927,0cyclictest11459-21sshd20:37:270
30266999923,0cyclictest30264-21cyclictest00:10:010
30266999923,0cyclictest1999-21seq23:06:350
30266999921,0cyclictest24888-21date22:05:020
30266999919,0cyclictest6808-21seq20:05:490
30266999919,0cyclictest12113-21runrttasks21:36:430
30266999820,0cyclictest0-21swapper00:03:120
30266999615,0cyclictest7929-21sed23:45:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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