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2026-04-26 - 14:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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.

Total number of samples: 50.5 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 highest latencies:
System rack5slot7s.osadl.org (updated Sun Apr 26, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22279224282193,91sleep00-21swapper19:09:320
223759916717,122cyclictest6779-21apt-get20:46:590
223759916113,122cyclictest12746-21ls00:36:010
223759915916,120cyclictest10262-21apt-get00:26:260
223759915916,115cyclictest15946-21apt-get21:45:210
223759915915,119cyclictest1282-21wc23:30:460
223759915912,122cyclictest28893-21grep23:00:430
22375991589,122cyclictest24316-21apt-get19:21:430
223759915814,120cyclictest26718-21munin-run22:50:010
223759915813,120cyclictest9012-21/usr/sbin/munin00:16:360
223759915716,40cyclictest31767-21munin-run23:20:020
223759915715,118cyclictest5889-21apt-get00:00:260
223759915710,25cyclictest19985-21sort22:07:050
223759915617,43cyclictest25231-21apt-get22:40:180
223759915615,117cyclictest10264-21/usr/sbin/munin00:25:060
223759915614,24cyclictest3316-21sshd23:44:150
223759915517,26cyclictest28903-21/usr/sbin/munin19:45:530
223759915517,22cyclictest24304-21apt22:35:020
223759915417,20cyclictest8357-21apt-get00:15:050
223759915416,23cyclictest31972-21users20:01:070
223759915415,116cyclictest26162-21apt-get19:30:360
223759915415,115cyclictest8006-21df20:55:260
223759915415,115cyclictest26888-21apt-get22:50:270
22375991539,121cyclictest20248-21apt-get22:10:380
223759915342,19cyclictest31080-21timerwakeupswit19:56:010
223759915340,21cyclictest959-21switchtime20:11:000
223759915317,112cyclictest30013-21ntp_states19:50:510
223759915315,24cyclictest2079-21apt-get20:20:190
223759915313,116cyclictest21425-21/usr/sbin/munin22:15:490
223759915312,25cyclictest12636-21munin-run21:25:000
223759915310,118cyclictest30144-21sshd23:09:070
22375991529,119cyclictest17168-21find21:50:560
223759915215,38cyclictest32580-21apt23:25:020
223759915215,23cyclictest24319-21latency_hist19:20:020
223759915215,112cyclictest2515-21munin-run23:40:030
223759915213,25cyclictest301-21users20:06:070
22375991519,119cyclictest28262-21zcat22:56:030
223759915121,28cyclictest22128-21diskstats22:20:360
223759915118,27cyclictest3433-21apt-get23:45:180
223759915116,26cyclictest4465-21apt-get20:35:200
223759915114,24cyclictest14189-21users21:31:080
223759915111,24cyclictest5754-21mailstats20:40:560
223759915036,21cyclictest11523-21zcat21:15:560
223759915026,105cyclictest7113-21apt-get20:50:160
223759915020,28cyclictest3671-21apt-get20:30:210
223759915017,26cyclictest22474-21apt-get19:10:200
223759915013,112cyclictest7166-21awk00:05:550
223759915010,115cyclictest10074-21/usr/sbin/munin21:06:070
223759914930,97cyclictest0-21swapper21:15:010
223759914916,29cyclictest22813-21/usr/sbin/munin22:25:230
223759914914,113cyclictest11906-21cat00:31:080
223759914912,29cyclictest18359-21/usr/sbin/munin22:00:270
223759914911,25cyclictest26202-21apt-config19:30:060
223759914910,28cyclictest14887-21grep21:36:010
223759914816,106cyclictest24578-21irqstats22:35:380
223759914813,95cyclictest27990-21munin-run19:40:030
223759914810,113cyclictest4226-21/usr/sbin/munin23:50:210
22375991479,25cyclictest18238-21munin-plugin-st22:00:020
223759914720,101cyclictest9381-21users21:01:070
223759914713,113cyclictest855-21sed23:26:020
223759914615,22cyclictest5023-21apt-get23:55:180
223759914612,29cyclictest3140-21missed_timers20:25:460
223759914523,32cyclictest0-21swapper20:20:000
223759914421,25cyclictest12735-21/usr/sbin/munin21:26:090
223759914417,104cyclictest15249-21df21:40:240
223759914413,28cyclictest28104-21modprobe19:40:080
223759914412,22cyclictest30568-21grep23:10:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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