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2025-11-07 - 14:30

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 Fri Nov 07, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501610,0irq/47-4a10000015184-21lldpd19:06:090
220519912030,0cyclictest10795-21ssh23:33:200
220519911612,0cyclictest31562-21latency_hist20:09:530
220519911530,0cyclictest25449-21ssh22:55:280
220519911525,0cyclictest19602-21ssh21:33:530
220519911028,0cyclictest25704-21kworker/u2:623:09:590
220519911015,0cyclictest18600-21idleruntime-cro23:49:590
220519910938,0cyclictest81850irq/46-4a10000021:48:500
220519910922,0cyclictest474-21kworker/u2:700:03:560
220519910921,0cyclictest28449-21chrt23:01:550
220519910911,0cyclictest8737-21ssh22:19:590
220519910832,0cyclictest29603-21sh00:12:590
220519910831,0cyclictest13864-21rm22:30:420
220519910825,0cyclictest8198-21diskmemload22:27:360
220519910825,0cyclictest15359-21/usr/sbin/munin21:24:570
220519910817,0cyclictest2757-21munin-run00:25:000
220519910729,0cyclictest4112-21ssh22:09:590
220519910729,0cyclictest15201-21runrttasks22:01:280
220519910727,0cyclictest14826-21in:imuxsock23:42:190
220519910726,0cyclictest474-21kworker/u2:723:39:380
220519910638,0cyclictest81850irq/46-4a10000021:35:210
220519910628,0cyclictest11254-21diskmemload21:16:130
220519910627,0cyclictest27278-21sh00:08:010
220519910626,0cyclictest16188-21sh22:35:400
220519910625,0cyclictest15184-21lldpd23:50:500
220519910624,0cyclictest28153-21kworker/u2:019:49:520
220519910623,0cyclictest81950irq/47-4a10000022:52:200
220519910531,0cyclictest19220-21ssh22:42:110
220519910529,0cyclictest32288-21apt-config23:10:040
220519910526,0cyclictest29437-21seq19:55:010
220519910526,0cyclictest22019-21latency_hist19:09:520
220519910526,0cyclictest1590-21seq20:26:080
220519910525,0cyclictest29647-21kworker/u2:020:12:400
220519910525,0cyclictest14826-21in:imuxsock21:01:230
220519910524,0cyclictest23177-21rm21:41:120
220519910513,0cyclictest32538-21kworker/u2:220:19:560
220519910434,0cyclictest81850irq/46-4a10000022:50:000
220519910429,0cyclictest3151-21diskmemload23:17:080
220519910427,0cyclictest4322-21diskmemload00:28:210
220519910426,0cyclictest8814-21seq00:37:590
220519910426,0cyclictest2385-21kworker/u2:420:55:210
220519910426,0cyclictest15740-21sh21:25:340
220519910424,0cyclictest81950irq/47-4a10000020:54:550
220519910328,0cyclictest32538-21kworker/u2:220:24:030
220519910328,0cyclictest22621-21sh23:58:190
220519910325,0cyclictest5071-21sh23:21:010
220519910228,0cyclictest28863-21diskmemload21:53:330
220519910226,0cyclictest6996-21kworker/u2:721:10:180
220519910226,0cyclictest24316-21kworker/u2:619:41:500
220519910225,0cyclictest81950irq/47-4a10000000:15:260
220519910127,0cyclictest31188-21diskmemload21:58:310
220519910126,0cyclictest6248-21diskmemload00:32:260
22051999920,0cyclictest10901-21runrttasks22:24:310
22051999831,0cyclictest81850irq/46-4a10000019:19:510
22051999828,0cyclictest81950irq/47-4a10000023:25:050
22051999734,0cyclictest101ktimersoftd/020:44:550
2205199959,0cyclictest4195-21cat22:10:000
22051999522,0cyclictest9-21ksoftirqd/020:45:230
22051999426,0cyclictest7829-21runrttasks21:07:060
22051999222,0cyclictest22049-21cyclictest19:20:010
22051999032,0cyclictest15201-21runrttasks19:51:520
22051998828,0cyclictest15201-21runrttasks20:34:200
22051995443,0cyclictest81850irq/46-4a10000020:39:000
22051995039,0cyclictest81850irq/46-4a10000019:34:530
22051994939,0cyclictest101ktimersoftd/019:34:570
22051994938,0cyclictest81850irq/46-4a10000020:04:530
22051994733,0cyclictest22049-21cyclictest19:26:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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