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2025-12-07 - 11:32

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 Dec 07, 2025 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
299299240,23cyclictest2698-21tr21:19:593
299299240,23cyclictest0-21swapper/322:10:023
2991992422,1cyclictest0-21swapper/222:00:002
299199240,23cyclictest0-21swapper/219:38:262
2990992422,1cyclictest15131-21munin-run20:40:001
299099240,23cyclictest27831-21turbostat00:20:001
2989992423,1cyclictest8520-21apt-get22:38:280
2989992421,2cyclictest7541-21munin-run21:30:010
2992992323,0cyclictest0-21swapper/323:23:253
2992992323,0cyclictest0-21swapper/320:38:273
2992992321,1cyclictest25173-21cron22:05:003
299299230,22cyclictest28585-21apt-get23:18:253
299299230,22cyclictest25631-21cron23:10:003
2990992320,2cyclictest7695-21sendmail-msp23:40:001
299099231,21cyclictest598-21rs:main1
299099230,22cyclictest596-21in:imuxsock00:15:001
299099230,22cyclictest32309-21ls21:15:001
299099230,22cyclictest17525-21perf20:44:591
298999230,2cyclictest29921-21wc21:10:000
298999230,2cyclictest25674-21idleruntime-cro23:10:000
298999230,22cyclictest593-21dbus-daemon20:00:000
298999230,22cyclictest27847-21ls00:20:000
298999230,22cyclictest0-21swapper/022:03:290
299299220,21cyclictest13459-21apt-get23:53:283
299299220,1cyclictest18464-21apt-get00:00:013
2991992222,0cyclictest0-21swapper/222:43:302
2991992222,0cyclictest0-21swapper/222:35:012
2991992220,1cyclictest0-21swapper/219:55:032
2991992219,2cyclictest596-21in:imuxsock22:15:012
299199220,21cyclictest733-21apt-get00:33:282
299199220,21cyclictest583-21avahi-daemon20:09:592
299199220,21cyclictest19974-21sh21:55:002
299199220,21cyclictest19915-21apt-get20:50:012
299199220,21cyclictest0-21swapper/221:03:282
299199220,21cyclictest0-21swapper/219:53:262
2990992219,2cyclictest25055-21munin-plugin-st19:55:011
299099220,21cyclictest5149-21munin-run21:25:001
299099220,21cyclictest28585-21apt-get23:18:271
299099220,21cyclictest16182-21apt-get22:53:271
299099220,21cyclictest10086-21latency_hist23:45:001
299099220,21cyclictest0-21swapper/122:23:281
299099220,21cyclictest0-21swapper/100:33:281
299099220,21cyclictest0-21swapper/100:28:261
299099220,1cyclictest7460-21cat20:25:001
299099220,1cyclictest12373-21idleruntime-cro21:40:001
2989992221,0cyclictest30774-21apt-get20:08:260
2989992217,4cyclictest0-21swapper/022:33:270
298999220,21cyclictest32323-21apt-get21:15:000
298999220,21cyclictest0-21swapper/022:10:000
298999220,21cyclictest0-21swapper/020:53:260
298999220,21cyclictest0-21swapper/000:08:290
298999220,1cyclictest30469-21sendmail-msp23:20:000
298999220,1cyclictest20481-21basename23:00:000
298999220,1cyclictest15032-21apt-get19:35:020
2992992121,0cyclictest0-21swapper/321:43:293
2992992121,0cyclictest0-21swapper/321:23:283
2992992121,0cyclictest0-21swapper/319:35:023
2992992120,1cyclictest12869-21turbostat22:45:003
2992992120,0cyclictest15879-21apt-get22:50:023
2992992120,0cyclictest15853-21apt-get23:58:263
299299210,20cyclictest30451-21apt-get21:13:293
299299210,20cyclictest0-21swapper/320:43:303
299299210,0cyclictest0-21swapper/319:28:273
2991992120,1cyclictest10709-21apt-get19:28:272
2991992120,0cyclictest28049-21apt-get21:08:272
2991992119,1cyclictest10780-21apt-get20:33:282
299199210,21cyclictest0-21swapper/223:50:022
299199210,21cyclictest0-21swapper/221:13:302
299199210,20cyclictest0-21swapper/223:23:262
299199210,20cyclictest0-21swapper/219:13:272
299199210,0cyclictest30770-21apt-get00:28:262
2990992121,0cyclictest28379-21apt-get20:03:271
2990992121,0cyclictest10617-21apt-get23:48:301
2990992121,0cyclictest0-21swapper/119:58:271
2990992121,0cyclictest0-21swapper/119:35:021
2990992120,0cyclictest0-21swapper/123:53:281
2990992118,2cyclictest22-21ksoftirqd/123:00:001
299099210,20cyclictest8055-21apt-get21:33:281
299099210,20cyclictest736-21apt-get20:13:281
2989992119,1cyclictest0-21swapper/021:50:000
2989992119,1cyclictest0-21swapper/021:00:000
298999210,21cyclictest0-21swapper/020:18:280
298999210,20cyclictest8313-21apt-get19:23:260
298999210,20cyclictest0-21swapper/023:53:280
298999210,20cyclictest0-21swapper/022:48:270
298999210,20cyclictest0-21swapper/021:33:270
298999210,20cyclictest0-21swapper/021:15:020
298999210,20cyclictest0-21swapper/020:23:270
298999210,0cyclictest3326-21apt-get22:28:260
298999210,0cyclictest0-21swapper/022:18:270
298999210,0cyclictest0-21swapper/020:33:270
298999210,0cyclictest0-21swapper/019:13:270
298999210,0cyclictest0-21swapper/000:33:280
2992992020,0cyclictest0-21swapper/322:48:283
2992992020,0cyclictest0-21swapper/321:48:273
2992992020,0cyclictest0-21swapper/321:03:293
2992992020,0cyclictest0-21swapper/320:18:273
2992992020,0cyclictest0-21swapper/319:53:263
2992992020,0cyclictest0-21swapper/300:38:293
2992992020,0cyclictest0-21swapper/300:18:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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