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2025-12-05 - 07:45

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 Fri Dec 05, 2025 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1176521997935,13cyclictest272-21dbus-daemon21:40:011
1176521997935,13cyclictest272-21dbus-daemon21:40:001
117651799787,31cyclictest0-21swapper/019:30:020
1176521997630,5cyclictest306-21in:imuxsock19:50:011
1176517997513,31cyclictest1-21systemd00:01:270
1176517997513,31cyclictest1-21systemd00:01:270
117652199724,4cyclictest131rcu_preempt20:00:031
117652199724,4cyclictest131rcu_preempt20:00:021
1176521997231,10cyclictest235-21systemd-journal21:42:271
1176526997024,12cyclictest235-21systemd-journal21:10:012
1176521996925,17cyclictest272-21dbus-daemon19:15:001
1176517996933,31cyclictest1192554-21sshd00:18:140
1176530996820,17cyclictest1179661-21latency_hist20:10:013
1176530996416,10cyclictest37-21ksoftirqd/323:40:013
1176530996416,10cyclictest37-21ksoftirqd/323:40:003
117651799639,14cyclictest1-21systemd20:45:000
1176517996319,15cyclictest1187091-21sshd22:30:270
1176517996318,13cyclictest1179269-21date20:00:030
1176517996318,13cyclictest1179269-21date20:00:020
1176517996124,4cyclictest1190784-21munin-run23:45:010
1176521996040,14cyclictest1-21systemd20:35:001
1176517996022,34cyclictest363-21snmpd19:35:160
1176517995919,36cyclictest0-21swapper/020:28:260
1176517995737,16cyclictest1189438-21sshd23:18:270
1176517995712,22cyclictest1176511-21cyclictest20:05:010
1176517995618,34cyclictest1179817-21sshd20:13:260
1176517995618,34cyclictest1179817-21sshd20:13:250
1176517995615,36cyclictest363-21snmpd23:46:050
1176517995526,6cyclictest1187385-21latency_hist22:40:020
1176530995434,14cyclictest272-21dbus-daemon20:15:023
1176530995434,14cyclictest272-21dbus-daemon20:15:013
1176517995437,14cyclictest1177232-21sshd19:22:250
1176517995433,17cyclictest1185812-21sshd22:09:260
1176517995420,11cyclictest1176616-21latency_hist19:10:020
1176530995338,11cyclictest1180845-21sshd20:30:253
1176530995320,5cyclictest1177512-21munin-run19:30:003
1176530995311,11cyclictest1192643-21sed00:20:023
1176517995335,14cyclictest1189164-21sshd23:11:270
1176517995317,32cyclictest0-21swapper/023:40:010
1176517995317,32cyclictest0-21swapper/023:40:000
1176530995237,11cyclictest1184514-21sshd21:42:453
1176517995236,13cyclictest1186929-21cat22:30:030
1176517995236,12cyclictest1186060-21sshd22:13:280
1176530995137,11cyclictest1177746-21sshd19:34:263
1176521995134,13cyclictest272-21dbus-daemon19:40:001
1176521995113,27cyclictest1182162-21modprobe21:00:001
1176517995136,11cyclictest1182929-21sshd21:10:270
1176517995135,13cyclictest1178515-21sshd19:46:260
1176530995036,10cyclictest1183192-21cron21:16:593
1176530995035,11cyclictest1191824-21munin-run00:05:023
1176530995035,11cyclictest1191824-21munin-run00:05:023
1176530995035,11cyclictest1186385-21munin-run22:20:013
1176530995034,12cyclictest1188377-21sshd22:55:263
1176530995034,12cyclictest1184768-21sshd21:47:453
1176530995034,11cyclictest1-21systemd22:15:013
1176530995034,11cyclictest1177021-21munin-run19:20:013
1176530995032,14cyclictest1193077-21sshd00:26:283
1176517995037,10cyclictest1183981-21sshd21:32:280
1176517995035,12cyclictest1182428-21sshd21:02:380
1176517995035,11cyclictest1181887-21sshd20:51:250
1176530994935,11cyclictest1189467-21munin-run23:20:013
1176530994933,12cyclictest1188126-21sshd22:50:283
1176530994931,15cyclictest1178510-21sshd19:45:263
1176526994910,27cyclictest1189184-21kworker/u8:023:25:022
1176521994930,14cyclictest272-21dbus-daemon00:10:011
1176517994936,10cyclictest363-21snmpd23:21:000
1176517994935,10cyclictest1184302-21munin-run21:40:020
1176517994935,10cyclictest1184302-21munin-run21:40:010
1176517994913,31cyclictest0-21swapper/021:55:270
117653099488,6cyclictest131rcu_preempt00:15:003
117653099485,6cyclictest131rcu_preempt19:45:013
1176530994834,10cyclictest1180392-21munin-run20:25:013
1176530994834,10cyclictest1180392-21munin-run20:25:013
1176530994833,12cyclictest1192027-21sshd00:05:263
1176530994833,12cyclictest1191021-21munin-run23:49:593
1176530994833,11cyclictest1178799-21munin-run19:55:003
1176530994832,12cyclictest1189171-21sshd23:12:593
117652699485,6cyclictest131rcu_preempt20:32:272
1176526994826,16cyclictest1-21systemd20:15:022
1176526994826,16cyclictest1-21systemd20:15:022
1176521994833,10cyclictest23-21ksoftirqd/122:39:591
1176517994834,11cyclictest1192045-21sshd00:09:270
1176517994833,12cyclictest1187884-21sshd22:47:270
1176517994833,12cyclictest1183479-21sshd21:22:270
1176517994833,12cyclictest1183479-21sshd21:22:260
1176517994833,11cyclictest1179584-21munin-run20:10:000
117651799482,14cyclictest1180310-21latency_hist20:20:020
1176517994813,30cyclictest1191558-21lockfile-remove00:00:000
1176530994734,10cyclictest363-21snmpd19:55:203
1176530994734,10cyclictest363-21snmpd19:55:193
1176530994734,10cyclictest1191286-21munin-run23:55:013
1176530994734,10cyclictest1184230-21sshd21:36:263
1176530994734,10cyclictest1184230-21sshd21:36:263
1176530994734,10cyclictest1176688-21sshd19:12:233
1176530994733,10cyclictest1185257-21sshd21:55:273
1176530994733,10cyclictest1182942-21sshd21:12:403
1176530994732,9cyclictest37-21ksoftirqd/322:40:023
1176530994732,11cyclictest1188910-21sshd23:05:263
117652699477,3cyclictest131rcu_preempt21:50:012
1176526994731,12cyclictest30-21ksoftirqd/200:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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