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2025-12-11 - 12:07

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 Thu Dec 11, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310299260,20cyclictest19781-21sh23:04:591
310299260,1cyclictest593-21dbus-daemon21:15:011
309899250,21cyclictest29420-21apt-get21:13:460
310799240,1cyclictest14805-21apt-get20:42:323
310499242,21cyclictest0-21swapper/220:18:502
310299240,0cyclictest0-21swapper/122:13:481
3098992424,0cyclictest28695-21apt-get22:18:450
3098992421,2cyclictest31822-21apt-get21:18:460
310799230,22cyclictest4652-21basename23:39:593
3104992323,0cyclictest28878-21perf21:10:002
3104992323,0cyclictest0-21swapper/221:23:482
3104992322,1cyclictest0-21swapper/222:13:472
3104992320,2cyclictest1276-21awk21:20:002
3102992321,1cyclictest24037-21sendmail-msp21:00:001
3102992320,2cyclictest0-21swapper/123:43:481
3102992319,3cyclictest0-21swapper/100:33:481
310299230,2cyclictest1147-21perf00:40:001
3098992321,1cyclictest0-21swapper/022:50:000
309899230,22cyclictest10102-21apt-get20:33:480
3107992221,0cyclictest20333-21apt-get23:08:483
3107992220,1cyclictest20896-21plymouth22:00:003
3107992220,1cyclictest16725-21cron00:05:003
3107992220,1cyclictest16084-21basename21:49:593
3107992220,1cyclictest0-21swapper/319:43:473
310799220,22cyclictest6486-21perf21:30:003
310799220,21cyclictest19758-21apt-get20:53:463
310799220,1cyclictest0-21swapper/321:55:003
310499229,12cyclictest15938-21ntpq00:03:522
3104992220,1cyclictest5370-21munin-run22:35:002
3104992220,1cyclictest11309-21munin-run21:40:002
3104992219,2cyclictest31147-21turbostat00:35:002
310499221,0cyclictest28-21ksoftirqd/222:18:492
310499220,21cyclictest0-21swapper/221:33:482
310499220,21cyclictest0-21swapper/200:23:502
310499220,1cyclictest0-21swapper/220:40:002
3102992221,0cyclictest0-21swapper/122:53:471
310299220,22cyclictest0-21swapper/123:18:481
310299220,21cyclictest26912-21apt-get00:28:471
310299220,21cyclictest0-21swapper/122:33:491
310299220,21cyclictest0-21swapper/100:03:471
310299220,1cyclictest7874-21munin-plugin-st19:20:001
310299220,1cyclictest23293-21basename22:05:011
310299220,1cyclictest13222-21apt-get19:33:471
310299220,1cyclictest0-21swapper/100:08:471
3098992222,0cyclictest7606-21apt-get23:48:480
3098992221,0cyclictest0-21swapper/019:28:490
3098992220,1cyclictest0-21swapper/021:35:000
309899220,21cyclictest6008-21apt-get19:18:470
309899220,21cyclictest23963-21perf00:20:000
309899220,21cyclictest15519-21apt-get22:58:480
309899220,21cyclictest0-21swapper/023:38:490
309899220,21cyclictest0-21swapper/023:10:000
309899220,21cyclictest0-21swapper/020:03:480
309899220,21cyclictest0-21swapper/019:33:470
309899220,1cyclictest0-21swapper/021:53:490
3107992119,1cyclictest612-21gdbus20:50:003
3107992119,1cyclictest14353-21apt20:40:003
310799210,20cyclictest31708-21apt-get00:38:513
310799210,20cyclictest12402-21apt-get23:58:493
310799210,20cyclictest0-21swapper/322:18:443
310799210,20cyclictest0-21swapper/319:38:463
310799210,20cyclictest0-21swapper/300:28:473
310799210,1cyclictest5303-21apt-get20:23:453
310799210,1cyclictest17304-21apt-get00:08:483
310799210,0cyclictest2885-21apt-get20:18:493
310799210,0cyclictest0-21swapper/322:58:483
3104992121,0cyclictest23304-21perf22:05:012
3104992121,0cyclictest0-21swapper/219:53:482
310499210,20cyclictest0-21swapper/221:28:502
310499210,20cyclictest0-21swapper/220:23:452
310499210,1cyclictest593-21dbus-daemon19:25:002
310499210,0cyclictest0-21swapper/222:53:472
3102992121,0cyclictest0-21swapper/121:38:461
3102992120,1cyclictest7702-21apt-get20:28:481
3102992119,1cyclictest24573-21apt-get23:15:001
310299210,1cyclictest17363-21apt-get20:48:481
310299210,0cyclictest0-21swapper/120:08:451
3098992121,0cyclictest5910-21apt-get22:38:470
3098992121,0cyclictest5910-21apt-get22:38:470
3098992121,0cyclictest0-21swapper/020:28:480
3098992120,1cyclictest22158-21apt-get20:58:490
3098992120,0cyclictest0-21swapper/022:53:470
3098992120,0cyclictest0-21swapper/000:25:000
3098992119,1cyclictest22283-21apt-get19:50:000
3098992118,3cyclictest431-21apt-get20:13:490
309899210,21cyclictest0-21swapper/000:13:490
309899210,20cyclictest8424-21apt-get19:23:470
309899210,20cyclictest1831-21apt-get21:23:480
309899210,20cyclictest0-21swapper/023:15:010
309899210,1cyclictest0-21swapper/023:58:480
309899210,1cyclictest0-21swapper/022:43:480
3107992020,0cyclictest26244-21apt-get22:13:483
3107992020,0cyclictest0-21swapper/322:43:493
3107992020,0cyclictest0-21swapper/321:23:493
3107992020,0cyclictest0-21swapper/319:53:483
3107992020,0cyclictest0-21swapper/319:13:463
3107992018,1cyclictest327-21apt-get23:33:463
310799200,20cyclictest0-21swapper/322:38:483
310799200,20cyclictest0-21swapper/322:38:483
310799200,20cyclictest0-21swapper/320:58:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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