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2025-12-03 - 09:20

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 highest latencies:
System rack9slot8s.osadl.org (updated Wed Dec 03, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324821240,0sleep02653-21kworker/u2:519:04:580
38939910982,0cyclictest31183-21diskmemload22:35:470
38939910770,0cyclictest14685-21rm00:18:520
38939910366,0cyclictest22692-21diskmemload22:21:510
38939910280,0cyclictest1169-21ssh22:40:590
38939910163,0cyclictest28726-21ssh22:30:430
38939910161,0cyclictest1255-21kworker/u2:019:19:520
38939910078,0cyclictest16410-21ssh00:22:230
38939910070,0cyclictest2860-21ssh21:36:170
38939910067,0cyclictest24662-21seq00:40:010
38939910064,0cyclictest11998-21ssh00:13:090
3893999981,0cyclictest25551-21ssh23:33:050
3893999980,0cyclictest31703-21ssh21:28:490
3893999978,0cyclictest12070-21ssh21:55:400
3893999977,0cyclictest22934-21runrttasks23:27:350
3893999967,0cyclictest32416-21sendmail-mta23:47:460
3893999966,0cyclictest4508-21ssh22:48:150
3893999966,0cyclictest15763-21ssh22:03:320
3893999880,0cyclictest9694-21munin-run19:44:520
3893999878,0cyclictest11016-21ssh23:02:060
3893999877,0cyclictest26962-21ssh22:27:020
3893999876,0cyclictest7587-21ssh22:54:560
3893999870,0cyclictest27093-21ssh21:19:100
3893999866,0cyclictest7289-21http19:30:030
3893999862,0cyclictest12972-21kworker/u2:120:09:520
3893999859,0cyclictest28639-21ssh23:39:470
3893999766,0cyclictest9396-21ssh00:07:450
3893999765,0cyclictest22096-21ssh22:16:480
3893999764,0cyclictest3851-21ssh23:55:590
3893999763,0cyclictest20795-21runrttasks00:31:410
3893999759,0cyclictest17486-21ssh23:15:540
3893999679,0cyclictest9299-21ssh22:58:330
3893999678,0cyclictest10441-21ssh21:52:180
3893999675,0cyclictest8774-21ssh21:48:510
3893999675,0cyclictest28796-21ssh21:22:380
3893999674,0cyclictest15782-21ssh23:12:190
3893999673,0cyclictest8007-21munin-run00:05:010
3893999666,0cyclictest23669-21ssh21:11:500
3893999664,0cyclictest19558-21ssh23:20:150
3893999660,0cyclictest1261-21ssh21:33:000
3893999579,0cyclictest14879-21apt20:19:530
3893999576,0cyclictest30587-21ssh23:43:540
3893999576,0cyclictest15640-21apt-get20:25:130
3893999571,0cyclictest7274-21apt-get19:29:520
3893999564,0cyclictest18214-21ssh00:26:110
3893999562,0cyclictest6177-21ssh21:43:210
3893999562,0cyclictest11904-21munin-run19:59:530
3893999478,0cyclictest21762-21munin-run21:04:540
3893999463,0cyclictest14182-21ssh23:09:000
3893999463,0cyclictest1222-21ssh23:50:200
3893999374,0cyclictest21759-21apt-get21:05:230
3893999373,0cyclictest17804-21sshd20:38:120
3893999372,0cyclictest16616-21ssh22:05:100
3893999271,0cyclictest18920-21ssh22:10:030
3893999270,0cyclictest8940-21munin-run19:39:520
3893999173,0cyclictest15643-21munin-run20:24:540
3893999173,0cyclictest11167-21modprobe19:54:520
3893999173,0cyclictest10432-21modprobe19:49:520
3893999170,0cyclictest21013-21munin-run20:59:550
3893999167,0cyclictest4619-21basename19:14:510
3893999073,0cyclictest20169-21sshd20:54:140
3893998973,0cyclictest14127-21munin-run20:14:530
3893998971,0cyclictest12657-21munin-run20:04:530
3893998967,0cyclictest16829-21sshd20:31:110
3893998966,0cyclictest15184-21lldpd20:44:130
3893998770,0cyclictest6540-21munin-run19:24:510
3893998669,0cyclictest19196-21chrt20:47:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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