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2026-03-10 - 19:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Tue Mar 10, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26636402254184,58sleep20-21swapper/207:05:462
26636352247185,50sleep60-21swapper/607:05:426
26636602243171,57sleep40-21swapper/407:06:044
26637372222185,24sleep70-21swapper/707:07:127
26637302216183,21sleep00-21swapper/007:07:050
26638842214183,20sleep30-21swapper/307:09:173
26636812211178,21sleep50-21swapper/507:06:215
26636572202174,18sleep10-21swapper/107:06:011
2664191993332,1cyclictest2802815-21fwupd11:08:287
266419199319,4cyclictest0-21swapper/710:02:467
266419199319,4cyclictest0-21swapper/708:56:527
266419199279,0cyclictest0-21swapper/709:07:517
266419199269,0cyclictest0-21swapper/711:52:367
266419199253,4cyclictest0-21swapper/708:34:547
266418699250,24cyclictest0-21swapper/508:45:135
266418099250,24cyclictest2802815-21fwupd11:08:293
266418099250,1cyclictest2835142-21apt-get12:05:123
266417899250,24cyclictest0-21swapper/211:50:122
266417899250,24cyclictest0-21swapper/208:05:132
266418999240,2cyclictest2777244-21perf10:25:006
2664186992423,1cyclictest2690507-21perf07:55:015
266418699240,23cyclictest2711014-21packagekitd08:30:005
266418099240,2cyclictest2759728-21apt-get09:55:103
2664189992321,1cyclictest2834724-21munin-run12:05:006
2664189992321,1cyclictest2812033-21apt-get11:25:126
266418699230,22cyclictest2805888-21munin-run11:15:005
266418699230,22cyclictest2774110-21munin-run10:20:005
266418699230,22cyclictest0-21swapper/512:30:005
266418699230,22cyclictest0-21swapper/510:40:015
266418699230,22cyclictest0-21swapper/510:30:115
2664184992323,0cyclictest0-21swapper/410:00:124
266418499230,23cyclictest0-21swapper/408:30:024
266418499230,22cyclictest2797659-21apt-get11:00:124
266418499230,22cyclictest2797659-21apt-get11:00:124
266418499230,22cyclictest0-21swapper/412:20:114
266418499230,22cyclictest0-21swapper/409:50:114
266418499230,22cyclictest0-21swapper/409:25:124
266418099230,22cyclictest2786235-21apt-get10:40:113
2664178992322,1cyclictest2791933-21apt-get10:50:102
2664178992320,2cyclictest2747882-21dump-pmu-power09:35:002
266417899230,22cyclictest2840843-21apt-get12:15:122
266417899230,22cyclictest2704792-21turbostat08:20:012
266417899230,22cyclictest0-21swapper/212:35:182
266417899230,22cyclictest0-21swapper/210:55:132
266417899230,22cyclictest0-21swapper/210:55:132
266417899230,22cyclictest0-21swapper/207:35:132
266417899230,1cyclictest0-21swapper/210:00:122
2664175992321,1cyclictest2753607-21munin-plugin-st09:45:001
266417599230,23cyclictest2774301-21awk10:20:001
2664173992321,1cyclictest2711178-21apt-get08:30:110
2664191992221,1cyclictest2748308-21apt-get09:35:127
2664191992221,1cyclictest0-21swapper/710:05:127
2664191992221,0cyclictest0-21swapper/708:25:137
2664191992220,2cyclictest2734026-21apt-get09:10:117
2664191992220,1cyclictest2803404-21apt-get11:10:117
2664191992220,1cyclictest2707649-21awk08:25:007
266419199220,21cyclictest2745039-21munin-run09:30:007
266418999220,22cyclictest2837595-21basename12:10:006
266418999220,22cyclictest2774099-21idleruntime-cro10:20:006
266418999220,21cyclictest0-21swapper/611:20:136
266418999220,21cyclictest0-21swapper/610:40:116
266418999220,21cyclictest0-21swapper/610:25:126
266418999220,21cyclictest0-21swapper/609:55:106
266418999220,21cyclictest0-21swapper/608:25:136
266418999220,21cyclictest0-21swapper/608:15:116
266418999220,21cyclictest0-21swapper/608:10:126
266418999220,1cyclictest2780508-21apt-get10:30:116
266418699220,22cyclictest0-21swapper/507:35:015
266418699220,21cyclictest2811614-21munin-run11:25:005
266418699220,21cyclictest2759302-21turbostat.cron09:55:005
266418699220,21cyclictest0-21swapper/509:00:005
266418699220,1cyclictest2767874-21apt-get10:10:015
2664184992221,1cyclictest0-21swapper/411:05:114
2664184992220,1cyclictest2808747-21munin-run11:20:004
266418499220,21cyclictest2682368-21apt-get07:40:124
266418499220,21cyclictest0-21swapper/409:40:134
266418499220,21cyclictest0-21swapper/409:20:114
266418499220,21cyclictest0-21swapper/408:40:114
266418499220,21cyclictest0-21swapper/408:35:124
266418499220,21cyclictest0-21swapper/407:55:124
266418499220,21cyclictest0-21swapper/407:30:124
266418499220,1cyclictest0-21swapper/410:10:124
2664180992221,1cyclictest0-21swapper/307:15:013
2664180992220,1cyclictest0-21swapper/307:55:013
266418099220,21cyclictest0-21swapper/309:35:123
266418099220,21cyclictest0-21swapper/309:05:123
266418099220,1cyclictest2803404-21apt-get11:10:113
266418099220,1cyclictest2670922-21apt-get07:20:113
266418099220,0cyclictest0-21swapper/308:20:123
2664178992222,0cyclictest0-21swapper/207:55:122
2664178992221,1cyclictest0-21swapper/210:45:142
2664178992220,1cyclictest2802979-21latency_hist11:10:002
266417899220,21cyclictest0-21swapper/211:35:122
266417899220,21cyclictest0-21swapper/208:30:112
266417899220,1cyclictest2714032-21apt-get08:35:122
266417899220,1cyclictest2676212-21perf07:30:012
266417899220,1cyclictest0-21swapper/210:15:002
266417899220,1cyclictest0-21swapper/209:40:002
266417899220,1cyclictest0-21swapper/207:50:012
2664175992220,2cyclictest2747889-21awk09:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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