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2026-09-11 - 09:58

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 376 highest latencies:
System rack5slot7s.osadl.org (updated Fri Sep 11, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25428224402196,99sleep00-21swapper19:06:590
258139916311,129cyclictest19451-21ls21:45:220
258139916216,103cyclictest13197-21apt-get21:12:010
258139916117,119cyclictest2607-21apt-get20:02:030
258139916015,120cyclictest31978-21sshd19:45:250
258139916012,124cyclictest21866-21wc22:00:230
258139915914,116cyclictest28117-21systemctl22:40:020
258139915815,120cyclictest2187-21sort23:20:050
258139915717,112cyclictest30260-21apt-get19:35:170
258139915715,23cyclictest12216-21df00:20:240
258139915710,29cyclictest26186-21grep22:25:550
258139915613,120cyclictest1549-21grep19:56:040
258139915516,115cyclictest31329-21munin-run23:00:020
258139915415,37cyclictest5696-21apt-get23:40:250
258139915415,26cyclictest7939-21users23:51:060
258139915413,118cyclictest16812-21apt-get21:30:160
258139915410,121cyclictest14963-21grep21:16:110
258139915342,90cyclictest12121-21rt-features21:00:540
258139915321,28cyclictest5289-21apt-get20:20:200
258139915318,25cyclictest20977-21apt-get21:55:120
258139915311,26cyclictest29888-21find19:30:550
258139915224,32cyclictest17326-21kworker/u2:721:35:180
258139915219,27cyclictest28188-21ntp_states19:20:500
258139915219,106cyclictest12916-21apt-get00:25:170
258139915214,21cyclictest13808-21df00:30:240
258139915211,26cyclictest11999-21munin-run00:20:020
258139915211,119cyclictest10109-21awk00:05:550
258139915210,118cyclictest18824-21cat21:40:430
25813991518,25cyclictest5676-21cat23:40:060
25813991518,118cyclictest28855-21unixbench_singl22:41:020
258139915122,29cyclictest6490-21apt-get23:45:200
258139915120,25cyclictest29827-21apt-get22:50:210
258139915118,24cyclictest15952-21apt-get21:25:170
258139915118,106cyclictest10088-21apt-get20:50:200
258139915116,108cyclictest23389-21apt-get22:10:200
258139915114,98cyclictest4543-21munin-run23:35:000
258139915114,24cyclictest3291-21fgrep20:06:050
258139915112,23cyclictest15229-21cstates21:20:260
258139915111,97cyclictest25782-21latency_hist22:25:060
258139915110,24cyclictest6698-21head20:26:020
258139915016,40cyclictest8739-21memory20:40:430
258139915015,25cyclictest20355-21irqstats21:50:390
258139915015,113cyclictest527-21apt23:10:010
258139915014,37cyclictest8600-21cat23:56:010
258139915014,114cyclictest24360-21irqstats22:15:380
258139915013,108cyclictest27039-21/usr/sbin/munin19:15:570
258139915012,113cyclictest29197-21ls19:25:590
25813991499,23cyclictest13209-21grep21:10:060
258139914921,26cyclictest22767-21irqstats22:05:390
258139914920,102cyclictest10491-21apt-get00:10:230
258139914912,25cyclictest15208-21munin-run00:40:020
258139914911,27cyclictest11618-21sort21:00:050
258139914816,24cyclictest26149-21memory19:10:450
258139914814,26cyclictest5177-21sendmail20:20:020
258139914813,41cyclictest29209-21uname22:45:420
258139914811,97cyclictest2687-21sendmail_mailqu23:20:560
258139914811,114cyclictest8092-21zcat20:35:550
258139914717,21cyclictest8900-21apt-get00:00:170
25813991469,113cyclictest26986-21/usr/sbin/munin22:30:550
258139914618,23cyclictest31545-21df23:00:250
258139914615,105cyclictest9291-21/usr/sbin/munin20:45:370
258139914613,30cyclictest3556-21switchtime23:25:580
258139914519,102cyclictest725-21df23:10:240
258139914518,23cyclictest6992-21diskstats20:30:330
258139914515,24cyclictest3756-21df20:10:250
258139914513,110cyclictest32669-21/usr/sbin/munin19:50:220
258139914318,25cyclictest31196-21diskstats19:40:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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