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2025-11-30 - 19:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Sun Nov 30, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3737992624,1cyclictest593-21dbus-daemon11:15:001
3739992523,1cyclictest31344-21apt11:25:003
373799250,24cyclictest19302-21cron11:00:001
3739992422,1cyclictest9280-21perf10:40:003
373699240,23cyclictest29598-21idleruntime-cro09:10:000
3739992323,0cyclictest0-21swapper/311:37:533
3739992320,2cyclictest12687-21apt-get09:40:023
373999230,22cyclictest593-21dbus-daemon12:40:003
3738992320,2cyclictest17249-21basename09:50:002
3737992321,1cyclictest0-21swapper/111:35:001
373799231,21cyclictest19833-21apt-get11:02:551
373799230,2cyclictest24464-21cron10:05:011
3736992323,0cyclictest0-21swapper/008:57:540
3736992320,2cyclictest8967-21latency_hist11:45:010
3739992220,1cyclictest21037-21awk12:10:003
3739992220,1cyclictest0-21swapper/309:12:533
373999220,21cyclictest9159-21apt-get07:20:023
373999220,21cyclictest3573-21apt-get08:17:523
373999220,21cyclictest14290-21apt-get11:57:543
373999220,1cyclictest2220-21apt-get11:32:533
3738992220,1cyclictest1999-21munin-run09:20:012
373899220,21cyclictest0-21swapper/207:22:512
373899220,1cyclictest4407-21latency_hist09:25:002
3737992221,1cyclictest7353-21apt-get10:37:551
3737992221,0cyclictest19181-21apt-get07:42:521
3737992220,1cyclictest15015-21apt-get10:52:541
3737992220,1cyclictest0-21swapper/110:20:001
373799220,21cyclictest562-21idleruntime-cro12:34:591
373799220,21cyclictest26862-21turbostat.cron10:10:011
373799220,21cyclictest24147-21grep11:10:001
373799220,21cyclictest20133-21apt-get09:57:531
373799220,21cyclictest14264-21apt-get07:32:521
373799220,21cyclictest0-21swapper/112:27:541
373799220,21cyclictest0-21swapper/107:47:541
373799220,1cyclictest11754-21munin-run10:45:001
373799220,1cyclictest0-21swapper/109:07:531
373699220,21cyclictest30138-21apt-get10:17:530
373699220,21cyclictest28958-21grep11:20:000
373699220,21cyclictest0-21swapper/012:37:550
373699220,21cyclictest0-21swapper/012:32:550
373699220,1cyclictest9293-21awk10:40:000
3739992121,0cyclictest0-21swapper/310:52:553
3739992121,0cyclictest0-21swapper/307:57:523
3739992120,1cyclictest1165-21apt-get08:12:553
3739992120,1cyclictest0-21swapper/309:02:523
3739992120,1cyclictest0-21swapper/308:27:533
373999210,20cyclictest0-21swapper/312:22:523
373999210,20cyclictest0-21swapper/311:42:543
373999210,20cyclictest0-21swapper/310:27:553
373999210,1cyclictest9769-21apt-get10:42:533
373999210,0cyclictest0-21swapper/309:57:523
373999210,0cyclictest0-21swapper/307:12:503
3738992121,0cyclictest4957-21apt-get10:32:542
3738992121,0cyclictest30070-21apt-get09:12:542
3738992121,0cyclictest1314-21apt-get11:30:022
3738992119,1cyclictest9443-21apt-get11:47:542
3738992118,2cyclictest21073-21cron07:45:002
373899210,20cyclictest12767-21perf08:35:002
373899210,20cyclictest0-21swapper/210:42:532
373899210,20cyclictest0-21swapper/208:27:532
373899210,0cyclictest1091-21apt-get12:37:542
373899210,0cyclictest0-21swapper/210:50:032
373899210,0cyclictest0-21swapper/210:12:512
3737992121,0cyclictest0-21swapper/108:42:541
3737992119,1cyclictest612-21gdbus12:05:001
3737992119,1cyclictest29261-21turbostat10:15:001
3737992119,1cyclictest0-21swapper/109:44:591
373799210,20cyclictest8398-21apt-get08:27:521
373799210,20cyclictest0-21swapper/108:07:531
373799210,20cyclictest0-21swapper/107:27:541
373799210,1cyclictest0-21swapper/109:35:001
373799210,0cyclictest0-21swapper/110:32:551
373799210,0cyclictest0-21swapper/108:52:531
373799210,0cyclictest0-21swapper/107:52:571
3736992120,1cyclictest31190-21apt-get08:07:540
3736992119,1cyclictest28308-21ls08:00:000
373699210,20cyclictest12218-21apt-get10:47:520
373699210,20cyclictest0-21swapper/008:32:530
373699210,0cyclictest0-21swapper/012:02:530
373699210,0cyclictest0-21swapper/011:37:520
373699210,0cyclictest0-21swapper/007:22:510
3739992019,0cyclictest0-21swapper/309:47:553
373999200,20cyclictest0-21swapper/308:57:543
373999200,20cyclictest0-21swapper/307:17:523
373999200,19cyclictest0-21swapper/308:02:513
373999200,0cyclictest0-21swapper/312:02:533
373999200,0cyclictest0-21swapper/311:47:543
373999200,0cyclictest0-21swapper/309:07:523
3738992020,0cyclictest0-21swapper/212:07:542
3738992020,0cyclictest0-21swapper/211:27:532
3738992020,0cyclictest0-21swapper/211:22:552
3738992020,0cyclictest0-21swapper/211:17:552
3738992020,0cyclictest0-21swapper/211:07:532
3738992020,0cyclictest0-21swapper/209:27:532
3738992020,0cyclictest0-21swapper/208:22:532
3738992020,0cyclictest0-21swapper/208:12:552
3738992019,1cyclictest28717-21apt-get12:27:552
3738992019,1cyclictest24948-21apt-get10:07:522
373899200,20cyclictest0-21swapper/209:52:522
373899200,0cyclictest6602-21apt-get07:17:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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