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2026-08-16 - 17:17

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 Aug 16, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19051224372198,96sleep00-21swapper07:08:000
193209916424,21cyclictest23683-21latency_hist07:35:030
193209916417,123cyclictest25045-21munin-run11:00:010
193209916410,131cyclictest7551-21date09:15:070
193209916218,120cyclictest6558-21df_inode12:20:290
193209916216,120cyclictest19527-21diskstats07:10:330
19320991619,127cyclictest23053-21tr10:45:510
193209916035,21cyclictest26186-21munin-node07:50:110
193209916014,122cyclictest20665-21entropy07:15:510
193209915913,119cyclictest3436-21apt-get08:50:270
193209915817,117cyclictest12150-21apt-get09:40:270
193209915816,118cyclictest2880-21munin-run12:00:020
193209915815,118cyclictest7671-21apt-get09:15:270
193209915814,119cyclictest3692-21latency_hist12:05:010
193209915812,123cyclictest28680-21apt-get11:20:320
193209915715,43cyclictest1652-21apt08:40:010
193209915713,103cyclictest28207-21sendmail_mailqu11:16:580
193209915618,99cyclictest22050-21df10:40:260
193209915615,24cyclictest21832-21munin-run10:40:020
193209915516,23cyclictest3894-21df12:05:270
193209915514,116cyclictest8542-21apt-get09:21:110
193209915513,24cyclictest17215-21df10:10:270
193209915512,120cyclictest9539-21munin-run12:40:020
193209915512,117cyclictest30254-21/usr/sbin/munin08:15:250
193209915511,122cyclictest5634-21zcat09:00:560
193209915412,118cyclictest7892-21grep12:26:020
193209915333,22cyclictest28436-21head08:01:070
193209915318,22cyclictest11158-21apt09:35:010
193209915317,27cyclictest15403-21munin-run10:00:030
193209915317,24cyclictest26057-21df11:05:260
193209915313,40cyclictest6706-21cron09:10:010
193209915313,118cyclictest27447-21apt11:15:000
193209915312,114cyclictest13359-21grep09:45:540
193209915311,25cyclictest29392-21/usr/sbin/munin08:10:530
193209915216,109cyclictest17910-21apt-get10:15:200
193209915215,114cyclictest1622-21memory11:50:460
193209915214,115cyclictest32537-21awk11:40:460
193209915213,115cyclictest11681-21grep09:35:550
193209915212,100cyclictest32132-21munin-run11:40:020
193209915211,99cyclictest29109-21grep08:05:590
193209915135,97cyclictest25679-21tr07:45:480
193209915115,24cyclictest30468-21/usr/sbin/munin11:31:480
193209915114,38cyclictest23874-21df07:35:270
193209915114,113cyclictest18839-21df10:20:260
193209915112,25cyclictest3116-21cat08:46:010
19320991508,116cyclictest4487-21apt-get12:11:370
193209915014,27cyclictest20332-21/usr/sbin/munin10:30:530
193209915014,114cyclictest441-21grep08:30:480
193209915012,115cyclictest17011-21apt10:10:010
193209914917,36cyclictest25861-21munin-run11:05:010
193209914915,22cyclictest31200-21irqstats08:20:430
193209914915,108cyclictest1341-21latency_hist11:50:040
193209914914,95cyclictest29615-21apt-get11:25:270
193209914911,46cyclictest27298-21ntp_states07:55:510
193209914816,26cyclictest16178-21users10:01:120
193209914816,105cyclictest31821-21apt-get08:25:170
193209914716,27cyclictest1774-21/usr/sbin/munin08:40:240
193209914712,22cyclictest20217-21sshd10:28:270
193209914617,22cyclictest24839-21memory07:40:450
193209914615,37cyclictest5101-21munin-run09:00:030
193209914612,28cyclictest23546-21apt-get10:50:150
193209914610,38cyclictest6335-21modprobe12:20:010
193209914525,23cyclictest0-21swapper07:25:540
193209914516,24cyclictest8042-21apt-get12:30:160
193209914415,26cyclictest21381-21/usr/sbin/munin07:20:370
193209914413,44cyclictest14482-21ls09:51:040
193209914410,23cyclictest10283-21unixbench_singl09:26:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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