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2025-12-27 - 07:08

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Sat Dec 27, 2025 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
177457399694,19cyclictest238-21systemd-journal00:05:001
1774573996818,12cyclictest275-21dbus-daemon20:55:011
1774573996818,12cyclictest275-21dbus-daemon20:55:011
1774573996721,41cyclictest1791605-21cron00:40:001
1774582996612,12cyclictest37-21ksoftirqd/321:14:593
177457399666,24cyclictest1790553-21modprobe00:20:001
1774573996622,40cyclictest1785101-21sshd22:33:211
1774578996548,14cyclictest1786385-21sshd22:58:202
1774573996522,37cyclictest238-21systemd-journal00:30:031
1774573996517,10cyclictest1779789-21cat20:50:021
177458299644,7cyclictest37-21ksoftirqd/319:20:003
177457399644,11cyclictest1780173-21cron21:00:001
177457399642,16cyclictest1789261-21munin-run23:55:011
1774573996421,4cyclictest1785649-21latency_hist22:45:001
1774573996416,39cyclictest1779534-21cat20:45:011
1774578996345,13cyclictest1784631-21munin-run22:25:012
1774578996344,15cyclictest1787691-21sshd23:20:202
1774578996344,15cyclictest1776817-21sshd19:53:202
177457399634,9cyclictest1777077-21cron20:00:011
177457399634,9cyclictest1777077-21cron20:00:001
177457399633,18cyclictest1784330-21modprobe22:20:011
177457399633,17cyclictest1784099-21latency_hist22:15:011
177457399633,11cyclictest1775298-21modprobe19:25:001
177457399631,17cyclictest1778253-21cat20:20:021
177456899634,9cyclictest12-21ksoftirqd/021:00:000
1774578996247,8cyclictest30-21ksoftirqd/220:45:022
1774578996244,15cyclictest1782524-21sshd21:42:212
1774578996244,13cyclictest1776098-21munin-run19:40:012
177457399625,10cyclictest1788746-21modprobe23:45:001
177457399623,12cyclictest1787990-21munin-run23:30:001
177457399622,14cyclictest1780600-21latency_hist21:05:011
1774578996145,12cyclictest1789022-21munin-run23:50:012
1774578996145,11cyclictest1774991-21cron19:17:002
1774578996144,11cyclictest1787161-21sshd23:11:482
1774578996143,14cyclictest1778890-21sshd20:34:222
1774578996143,14cyclictest1778890-21sshd20:34:222
1774578996143,13cyclictest1788228-21munin-run23:35:012
1774578996142,15cyclictest1781529-21munin-run21:25:022
177457399618,12cyclictest238-21systemd-journal19:30:031
1774573996144,14cyclictest1773952-21kworker/1:219:10:021
177457399613,18cyclictest1-21systemd22:05:021
177457399613,18cyclictest1-21systemd22:05:011
177457399613,13cyclictest1777618-21munin-plugin-st20:10:001
177457399613,10cyclictest1780700-21cron21:10:001
177457399612,17cyclictest1783308-21systemctl22:00:011
1774573996113,8cyclictest1-21systemd00:25:011
1774573996111,44cyclictest0-21swapper/121:40:001
1774578996045,12cyclictest1790052-21munin-run00:10:012
1774578996045,12cyclictest1778657-21munin-run20:30:002
1774578996045,11cyclictest1791100-21munin-run00:30:022
1774578996045,11cyclictest1787413-21sshd23:16:502
1774578996045,11cyclictest1787413-21sshd23:16:502
1774578996044,12cyclictest1788442-21sshd23:35:222
1774578996044,12cyclictest1788442-21sshd23:35:212
1774578996044,12cyclictest1783049-21munin-run21:55:012
1774578996044,12cyclictest1780157-21sshd20:56:272
1774578996044,12cyclictest1779167-21munin-run20:40:002
1774578996043,12cyclictest1777379-21munin-run20:05:002
1774578996042,13cyclictest1777867-21munin-run20:15:002
1774578996015,13cyclictest1784051-21sshd22:11:412
177457399604,16cyclictest1-21systemd21:25:001
177457399602,20cyclictest1776590-21munin-plugin-st19:50:001
177457399602,20cyclictest1-21systemd19:55:001
1774578995945,11cyclictest1779915-21sshd20:53:222
1774578995945,11cyclictest1779915-21sshd20:53:212
1774578995944,11cyclictest1785917-21munin-run22:50:012
1774578995944,11cyclictest1785917-21munin-run22:50:002
1774578995943,12cyclictest1788771-21munin-run23:45:002
1774578995943,12cyclictest1776349-21munin-run19:45:012
1774578995943,11cyclictest1785415-21munin-run22:40:012
1774573995924,30cyclictest1789494-21sshd23:59:221
1774573995922,34cyclictest1783811-21sshd22:09:211
177456899595,8cyclictest12-21ksoftirqd/023:30:020
1774578995851,4cyclictest1780720-21munin-run21:10:012
1774578995845,10cyclictest364-21snmpd23:01:302
1774578995844,11cyclictest1790852-21munin-run00:25:002
1774578995844,10cyclictest1784884-21munin-run22:30:012
1774578995844,10cyclictest1780465-21munin-run21:05:002
1774578995843,11cyclictest1789242-21sshd23:54:212
1774578995843,11cyclictest1783591-21munin-run22:05:022
1774578995843,11cyclictest1783591-21munin-run22:05:022
1774578995843,11cyclictest1781204-21cron21:16:592
1774578995842,13cyclictest1784307-21cron22:17:012
1774578995842,12cyclictest1786936-21munin-run23:10:002
1774578995841,13cyclictest1782798-21munin-run21:50:012
1774578995839,4cyclictest30-21ksoftirqd/219:10:012
1774578995831,22cyclictest238-21systemd-journal22:55:012
177457399586,10cyclictest1786416-21systemctl23:00:011
177457399585,17cyclictest1776068-21munin-plugin-st19:40:001
177457399583,18cyclictest1776334-21munin-plugin-st19:44:591
177457399582,11cyclictest1783148-21latency_hist21:55:021
1774573995814,11cyclictest275-21dbus-daemon20:05:001
1774578995744,9cyclictest1791360-21munin-run00:35:002
1774578995742,11cyclictest1775819-21munin-run19:35:002
177457399575,16cyclictest1787446-21modprobe23:20:011
177457399575,16cyclictest1787446-21modprobe23:20:001
177457399573,16cyclictest1778931-21grep20:35:021
177457399573,16cyclictest1778931-21grep20:35:011
177457399573,13cyclictest238-21systemd-journal22:40:011
177457399573,13cyclictest1775030-21munin-plugin-st19:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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