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2025-11-19 - 02:39

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 Nov 18, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8185010290,0irq/46-4a10000010792-21runrttasks07:05:150
114079912030,0cyclictest18760-21apt-config07:54:560
114079912029,0cyclictest1377-21munin-run10:24:570
114079911931,0cyclictest18028-21munin-run10:59:580
114079911912,0cyclictest27726-21ssh11:20:120
114079911829,0cyclictest30596-21diskmemload09:33:080
114079911744,0cyclictest81850irq/46-4a10000009:55:460
114079911730,0cyclictest16868-21ssh12:06:120
114079911525,0cyclictest4686-21sh10:31:490
114079911431,0cyclictest30658-21ssh10:18:170
114079911414,0cyclictest13865-21apt12:00:000
114079911410,0cyclictest3346-21rm09:20:350
114079911311,0cyclictest27543-21sendmail-msp11:19:590
114079911228,0cyclictest17193-21munin-run09:49:560
114079911128,0cyclictest31929-21ssh09:12:380
114079911112,0cyclictest22622-21lockfile-create08:19:540
114079911034,0cyclictest81850irq/46-4a10000007:55:220
114079911021,0cyclictest29753-21grep09:04:580
114079910923,0cyclictest7002-21kworker/u2:010:37:300
114079910831,0cyclictest26663-21chrt08:45:210
114079910831,0cyclictest13213-21seq10:49:550
114079910824,0cyclictest17538-21kworker/u2:008:20:260
114079910813,0cyclictest1427-21rm09:16:400
114079910811,0cyclictest19003-21ssh12:10:270
114079910725,0cyclictest13190-21kworker/u2:209:44:560
114079910712,0cyclictest8478-21kworker/u2:311:10:000
114079910712,0cyclictest25934-21kworker/u2:708:44:580
114079910712,0cyclictest20353-21sh11:04:570
114079910625,0cyclictest25638-21latency_hist08:39:570
114079910621,0cyclictest81950irq/47-4a10000012:32:320
114079910618,0cyclictest4500-21sendmail-msp11:40:000
114079910538,0cyclictest81850irq/46-4a10000010:14:580
114079910530,0cyclictest16779-21sshd07:41:250
114079910529,0cyclictest81950irq/47-4a10000012:30:000
114079910525,0cyclictest25628-21sh10:07:390
114079910523,0cyclictest25707-21cron12:25:000
114079910430,0cyclictest14826-21in:imuxsock09:27:330
114079910426,0cyclictest8494-21kworker/u2:610:51:590
114079910425,0cyclictest18397-21seq09:52:240
114079910425,0cyclictest14826-21in:imuxsock11:13:370
114079910411,0cyclictest15627-21kworker/u2:010:04:590
114079910343,0cyclictest101ktimersoftd/012:04:020
114079910330,0cyclictest15201-21runrttasks08:54:560
114079910326,0cyclictest6992-21sh11:45:090
114079910326,0cyclictest23661-21kworker/u2:008:30:230
114079910326,0cyclictest14702-21seq07:27:470
114079910325,0cyclictest1481-21latency_hist10:25:000
114079910324,0cyclictest14826-21in:imuxsock11:40:370
114079910321,0cyclictest81950irq/47-4a10000007:39:530
114079910313,0cyclictest7537-21kworker/u2:011:51:110
114079910228,0cyclictest22957-21sh12:19:100
114079910226,0cyclictest9768-21sh10:42:320
114079910213,0cyclictest26418-21kworker/u2:012:37:060
114079910126,0cyclictest10527-21sh09:35:460
114079910028,0cyclictest22758-21kworker/u2:111:30:000
114079910026,0cyclictest11944-21seq07:13:300
114079910024,0cyclictest22758-21kworker/u2:111:33:150
114079910023,0cyclictest23462-21runrttasks08:24:570
114079910023,0cyclictest21173-21latency_hist08:09:550
11407999922,0cyclictest19232-21kworker/u2:108:14:520
11407999724,0cyclictest16794-21kworker/u2:307:49:410
11407999523,0cyclictest11403-21cyclictest08:01:090
11407999427,0cyclictest13261-21runrttasks07:19:460
11407999424,0cyclictest15469-21runrttasks07:32:550
11407999222,0cyclictest13995-21runrttasks07:23:000
11407995727,0cyclictest0-21swapper08:50:210
11407994731,0cyclictest29662-21apt09:04:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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