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2026-04-17 - 21:49

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 Fri Apr 17, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4305224322193,90sleep00-21swapper07:09:340
43979916317,24cyclictest21481-21apt-get08:48:520
43979916214,123cyclictest5347-21apt-get10:25:260
43979916017,121cyclictest20906-21apt-get12:00:360
43979915921,30cyclictest12757-21apt-get11:10:200
43979915918,99cyclictest24739-21apt-get09:06:590
43979915915,118cyclictest14258-21apt-get11:21:410
43979915914,25cyclictest29418-21apt-get09:36:450
43979915816,118cyclictest13947-21apt-get08:05:260
43979915815,56cyclictest9148-21df07:35:420
43979915813,24cyclictest27920-21grep09:25:420
43979915811,124cyclictest272-21snmpd09:30:120
43979915810,101cyclictest18642-21wc08:30:460
43979915722,27cyclictest8069-21diskstats10:40:340
43979915714,29cyclictest6282-21users07:16:230
43979915713,120cyclictest12582-21head11:06:010
43979915634,20cyclictest24969-21apt-get09:11:560
43979915623,31cyclictest20108-21diskstats08:40:350
43979915616,99cyclictest7836-21munin-run10:40:020
43979915615,117cyclictest11046-21munin-run11:00:030
43979915536,22cyclictest9859-21ntp_offset10:50:500
43979915535,94cyclictest16436-21munin-run08:20:030
43979915512,119cyclictest19170-21/usr/sbin/munin08:36:090
43979915419,29cyclictest1955-21users10:01:030
43979915412,119cyclictest16585-21apt-get08:20:290
43979915411,119cyclictest23958-21grep09:05:050
43979915410,100cyclictest22098-21awk08:50:550
43979915316,99cyclictest3859-21irqstats10:15:400
43979915316,37cyclictest26778-21apt09:20:010
43979915316,27cyclictest20209-21apt-get11:55:150
43979915315,26cyclictest6340-21munin-node10:30:110
43979915315,23cyclictest17703-21munin-run11:40:030
43979915313,115cyclictest24576-21cstates12:20:230
43979915311,25cyclictest26489-21grep12:30:560
43979915311,117cyclictest23267-21zcat12:10:540
43979915217,41cyclictest14263-21munin-run11:20:020
43979915217,107cyclictest11279-21diskstats11:00:330
43979915211,117cyclictest27565-21munin-plugin-st12:40:010
4397991519,26cyclictest4918-21find07:10:550
4397991519,119cyclictest2205-21sh10:05:300
43979915138,92cyclictest3484-21timerwakeupswit10:11:010
43979915115,114cyclictest7152-21apt07:25:020
43979915113,24cyclictest19690-21/usr/sbin/munin11:50:470
43979915013,26cyclictest27187-21tr09:20:480
43979915013,117cyclictest19310-21apt11:50:000
43979915012,115cyclictest8748-21/usr/sbin/munin10:45:420
43979914937,92cyclictest776-21grep09:55:510
43979914917,31cyclictest30658-21diskstats09:40:380
43979914915,108cyclictest5297-21munin-node07:55:490
43979914914,110cyclictest13803-21munin-run08:05:020
43979914912,98cyclictest24358-21munin-run12:20:010
43979914911,99cyclictest11664-21irqstats07:50:400
43979914812,42cyclictest15414-21apt-get11:25:180
43979914811,111cyclictest399-21grep09:55:040
43979914719,24cyclictest15171-21memory08:10:530
43979914717,25cyclictest16318-21diskstats11:30:320
43979914716,26cyclictest22334-21/usr/sbin/munin12:05:530
43979914715,22cyclictest4522-21apt-get10:20:180
43979914713,26cyclictest8746-21dpkg07:35:010
43979914710,24cyclictest22727-21tr08:55:500
4397991469,24cyclictest25709-21awk12:25:570
43979914616,23cyclictest10513-21head07:41:100
43979914612,24cyclictest17999-21zcat08:26:020
43979914512,110cyclictest31940-21cat09:46:020
43979914418,25cyclictest17926-21df11:40:270
43979914331,18cyclictest0-21swapper07:45:580
43979914218,23cyclictest7496-21memory07:25:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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