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2025-12-17 - 08:53

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 Wed Dec 17, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1625399290,1cyclictest313-21systemd-journal00:15:010
1625399270,23cyclictest29647-21apt-get19:39:320
1626799240,23cyclictest20716-21munin-plugin-st20:25:003
1626599240,23cyclictest0-21swapper/220:59:332
1626599240,0cyclictest0-21swapper/220:24:362
1626399240,23cyclictest15087-21idleruntime-cro21:20:001
16267992320,2cyclictest11059-21grep20:05:013
1626799230,22cyclictest0-21swapper/321:05:033
16265992321,1cyclictest28422-21munin-run22:55:002
1626599231,1cyclictest0-21swapper/221:35:012
1626599230,2cyclictest15826-21dump-pmu-power20:15:012
1626599230,22cyclictest30184-21ls00:05:012
1626599230,22cyclictest0-21swapper/220:10:012
16263992322,1cyclictest0-21swapper/122:49:341
1626399230,22cyclictest211rcuc/122:25:011
1626399230,22cyclictest18299-21apt20:20:011
1626399230,22cyclictest11419-21apt-get23:29:341
1626399230,22cyclictest0-21swapper/123:49:341
1625399230,22cyclictest4966-21apt-get00:20:010
16267992222,0cyclictest0-21swapper/323:59:323
16267992220,1cyclictest4338-21sh22:05:003
16267992220,1cyclictest3812-21cron19:50:003
16267992220,1cyclictest32564-21apt-get21:59:333
16267992220,1cyclictest19973-21awk21:30:013
16267992220,1cyclictest12693-21munin-run21:15:003
16267992220,1cyclictest0-21swapper/323:10:023
16267992220,1cyclictest0-21swapper/319:54:353
1626799220,21cyclictest24755-21sendmail-msp21:40:013
1626799220,21cyclictest0-21swapper/322:54:333
1626799220,21cyclictest0-21swapper/321:55:013
16265992219,2cyclictest23109-21munin-run20:30:002
1626599220,21cyclictest30827-21cron23:00:002
1626599220,21cyclictest2049-21apt-get19:49:332
1626599220,21cyclictest0-21swapper/221:59:332
1626599220,21cyclictest0-21swapper/220:44:342
1626599220,1cyclictest0-21swapper/221:29:332
16263992221,1cyclictest26626-21sh19:30:001
16263992220,1cyclictest16366-21munin-run22:30:011
16263992220,1cyclictest12684-21dump-pmu-power21:15:001
16263992220,1cyclictest0-21swapper/121:50:011
1626399220,21cyclictest890-21apt-get20:54:341
1626399220,21cyclictest8430-21perf23:20:011
1626399220,21cyclictest26106-21apt-get20:39:341
1626399220,21cyclictest0-21swapper/123:39:341
1626399220,1cyclictest28525-21apt-get20:44:341
1626399220,1cyclictest10803-21latency_hist23:25:011
16253992222,0cyclictest18691-21apt-get23:44:350
16253992222,0cyclictest0-21swapper/021:09:340
1625399220,21cyclictest6842-21apt-get19:59:350
1625399220,21cyclictest5999-21perf23:15:010
1625399220,21cyclictest5057-21cron21:00:010
1625399220,21cyclictest24855-21apt-get19:29:330
1625399220,21cyclictest23482-21apt-get23:54:340
1625399220,21cyclictest18923-21apt-get20:24:370
1625399220,21cyclictest15611-21perf23:35:010
1625399220,21cyclictest0-21swapper/020:09:330
1625399220,21cyclictest0-21swapper/019:34:340
1625399220,1cyclictest18169-21apt-get21:29:330
1625399220,1cyclictest0-21swapper/023:05:000
16267992121,0cyclictest21836-21apt-get22:44:353
16267992121,0cyclictest0-21swapper/300:04:343
16267992120,0cyclictest0-21swapper/320:54:343
16267992119,1cyclictest5715-21apt-get21:04:333
1626799210,21cyclictest0-21swapper/320:19:323
1626799210,20cyclictest5979-21apt-get00:24:333
1626799210,20cyclictest0-21swapper/323:39:343
1626799210,20cyclictest0-21swapper/322:49:343
1626799210,20cyclictest0-21swapper/322:29:343
1626799210,20cyclictest0-21swapper/319:24:343
1626799210,0cyclictest0-21swapper/323:49:343
1626799210,0cyclictest0-21swapper/321:49:353
16265992121,0cyclictest0-21swapper/223:19:342
16265992121,0cyclictest0-21swapper/220:04:342
16265992120,1cyclictest16162-21apt-get19:10:022
16265992120,1cyclictest13299-21apt-get21:19:352
16265992120,1cyclictest0-21swapper/221:54:332
16265992120,1cyclictest0-21swapper/220:39:342
16265992119,1cyclictest24239-21cron19:25:012
16265992119,1cyclictest0-21swapper/219:55:012
1626599210,21cyclictest0-21swapper/200:30:002
1626599210,20cyclictest31439-21apt-get23:04:332
1626599210,1cyclictest16215-21apt-get23:39:342
16263992121,0cyclictest9258-21apt-get20:04:341
16263992120,0cyclictest4967-21apt-get22:09:351
16263992119,1cyclictest24783-21awk21:40:011
16263992118,2cyclictest14968-21perf00:40:001
1626399210,21cyclictest0-21swapper/122:44:351
1626399210,20cyclictest0-21swapper/120:59:321
1626399210,20cyclictest0-21swapper/100:14:351
1626399210,0cyclictest3169-21apt-get00:19:341
1626399210,0cyclictest0-21swapper/123:59:321
16253992121,0cyclictest0-21swapper/022:49:340
16253992121,0cyclictest0-21swapper/022:29:340
16253992120,0cyclictest16215-21apt-get23:39:340
16253992119,1cyclictest25489-21latency_hist20:35:000
1625399210,21cyclictest0-21swapper/021:14:350
1625399210,21cyclictest0-21swapper/000:04:340
1625399210,20cyclictest0-21swapper/022:19:340
1625399210,20cyclictest0-21swapper/020:04:340
1625399210,0cyclictest0-21swapper/020:54:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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