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2026-06-14 - 08:41

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Sun Jun 14, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22033224562205,96sleep00-21swapper19:07:140
223899916412,126cyclictest8739-21snmpd22:42:090
223899916322,114cyclictest30715-21apt-get23:10:170
223899916114,122cyclictest31956-21/usr/sbin/munin20:06:320
223899916015,22cyclictest17882-21diskstats21:55:370
223899916011,65cyclictest12784-21systemd-journal20:40:020
223899915913,119cyclictest3733-21/usr/sbin/munin20:31:590
223899915818,117cyclictest8838-21diskstats21:00:310
223899915812,120cyclictest13236-21awk21:26:260
223899915810,22cyclictest27177-21cron22:50:010
223899915717,98cyclictest26150-21diskstats19:30:310
223899915712,40cyclictest23014-21irqstats22:25:390
223899915616,41cyclictest24333-21munin-run19:20:010
223899915616,29cyclictest9637-21diskstats00:20:350
223899915612,119cyclictest31076-21cat20:00:070
223899915518,25cyclictest2625-21grep20:21:020
223899915515,23cyclictest11824-21munin-run21:20:020
223899915513,119cyclictest6100-21ls20:41:010
223899915512,19cyclictest2184-21sort23:35:030
223899915441,92cyclictest12474-21timerandwakeup00:36:020
223899915419,23cyclictest1969-21munin-run20:20:020
223899915418,97cyclictest30032-21diskstats23:05:320
223899915414,116cyclictest24326-21apt-get22:35:320
223899915413,119cyclictest8739-21snmpd20:00:210
223899915412,39cyclictest27553-21basename19:40:030
223899915411,120cyclictest24380-21grep22:35:070
223899915410,119cyclictest7785-21cron00:09:590
223899915315,20cyclictest28125-21apt-get22:55:280
223899915315,115cyclictest27534-21apt-get19:41:290
223899915313,29cyclictest18753-21apt-config22:00:290
223899915312,28cyclictest25782-21/usr/sbin/munin19:25:580
22389991529,120cyclictest31779-21sort23:15:450
223899915280,34cyclictest5482-21/usr/sbin/munin23:55:260
223899915219,110cyclictest8802-21diskstats00:15:320
223899915218,27cyclictest11774-21users00:31:070
223899915216,22cyclictest8594-21munin-run00:15:010
223899915216,112cyclictest9525-21apt-get21:05:190
223899915216,111cyclictest3125-21memory20:25:460
223899915215,25cyclictest14671-21diskstats21:35:320
223899915211,118cyclictest20520-21diskstats22:10:320
223899915211,100cyclictest23273-21cat19:15:080
223899915210,40cyclictest27985-21latency_hist22:55:040
223899915210,120cyclictest20307-21latency_hist22:10:000
223899915210,117cyclictest17398-21find21:50:570
223899915117,102cyclictest32585-21memory23:20:460
223899915116,23cyclictest6415-21diskstats00:00:310
223899915115,24cyclictest29128-21apt-get23:00:210
223899915110,118cyclictest6951-21grep20:46:120
223899915021,101cyclictest3894-21apt-get23:45:210
223899915011,99cyclictest5287-21sort23:51:040
223899914930,96cyclictest16946-21cat21:50:050
223899914916,96cyclictest3211-21diskstats23:40:310
223899914913,112cyclictest8604-21apt21:00:000
223899914815,37cyclictest10688-21wc21:10:560
223899914815,25cyclictest2271-21apt-get23:35:180
223899914811,113cyclictest12639-21munin-plugin-st21:25:010
223899914716,108cyclictest15624-21memory21:40:440
223899914713,107cyclictest22039-21apt-get22:20:130
223899914632,23cyclictest14381-21unixbench_singl21:31:090
223899914627,87cyclictest23619-1kworker/u3:219:45:160
223899914617,26cyclictest10863-21/usr/sbin/munin00:26:010
223899914613,111cyclictest21313-21df_inode22:15:310
22389991459,113cyclictest800-21entropy23:25:350
223899914516,21cyclictest7109-21apt-get20:50:200
223899914514,106cyclictest29577-21df19:50:280
223899914433,19cyclictest12784-21systemd-journal19:20:310
223899914414,24cyclictest1142-21sshd20:14:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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