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2025-10-20 - 07:18

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 Mon Oct 20, 2025 00:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
386197999821,2cyclictest0-21swapper/023:50:020
3861985997527,13cyclictest272-21dbus-daemon23:10:012
3861985997527,13cyclictest272-21dbus-daemon23:10:012
3861985997127,5cyclictest3871409-21latency_hist22:10:032
3861985997127,5cyclictest3871409-21latency_hist22:10:022
386198999682,40cyclictest3874658-21sshd23:11:413
3861979996825,8cyclictest306-21in:imuxsock20:24:590
386198999672,59cyclictest3878085-21munin-run00:20:003
3861985996723,10cyclictest235-21systemd-journal22:20:002
386198999663,58cyclictest3876262-21munin-run23:45:003
386198999651,57cyclictest1-21systemd22:20:013
3861979996553,6cyclictest16950irq/224-800000000:00:000
386198999642,57cyclictest3870047-21munin-run21:45:013
386198999642,57cyclictest3870047-21munin-run21:45:013
386198999642,57cyclictest3865076-21munin-run20:10:003
386198999642,56cyclictest3865875-21systemd-run20:25:013
386198999632,56cyclictest3874186-21munin-run23:05:003
386198999632,56cyclictest3872819-21sed22:35:023
386198999632,56cyclictest363-21snmpd21:27:003
386198999632,56cyclictest363-21snmpd21:27:003
386198999631,57cyclictest3864516-21sshd19:57:213
386198999622,55cyclictest3872128-21munin-run22:25:013
386198999622,55cyclictest3864799-21sshd20:02:413
386198999622,52cyclictest3862095-21wc19:10:023
386198999621,57cyclictest3863468-21sshd19:35:423
386198999621,56cyclictest3878837-21sshd00:33:553
386198999621,56cyclictest3876023-21munin-run23:40:013
386198999621,56cyclictest3873869-21sshd22:55:423
386198999613,3cyclictest131rcu_preempt20:55:023
386198999612,55cyclictest3868439-21sshd21:14:423
386198999612,55cyclictest363-21snmpd22:27:113
386198999612,53cyclictest3877034-40ogrotate00:00:013
386198999612,53cyclictest3870538-21munin-run21:55:003
386198999611,55cyclictest3866091-21sshd20:27:273
386198999611,55cyclictest3864269-21sshd19:53:413
386198999611,55cyclictest3864010-21sshd19:47:193
386198999611,55cyclictest363-21snmpd20:36:503
3861989996110,46cyclictest0-21swapper/320:41:513
3861985996143,15cyclictest1-21systemd22:35:012
3861985996121,6cyclictest0-21swapper/222:30:002
3861985996119,13cyclictest272-21dbus-daemon20:25:012
386198999602,54cyclictest3870830-21munin-run22:00:003
386198999602,54cyclictest3869728-21sshd21:37:423
386198999602,53cyclictest3874450-21munin-run23:10:013
386198999602,53cyclictest3874450-21munin-run23:10:013
386198999602,53cyclictest3873163-21munin-run22:45:013
386198999602,53cyclictest3867940-21munin-run21:05:013
386198399601,46cyclictest0-21swapper/121:30:021
386198399601,46cyclictest0-21swapper/121:30:021
386198999592,52cyclictest3871080-21munin-run22:05:013
386198999591,54cyclictest3875199-21sshd23:21:423
386198999591,53cyclictest363-21snmpd00:25:213
386198999591,52cyclictest3875744-21munin-run23:35:013
386198999582,52cyclictest3862710-21sshd19:20:413
386198999582,51cyclictest3873402-21munin-run22:50:003
386198999582,51cyclictest3869484-21sshd21:34:423
386198999582,50cyclictest3878317-21modprobe00:20:263
386198999581,6cyclictest3870254-21sshd21:46:423
386198999581,53cyclictest3871586-21munin-run22:15:013
386198999581,52cyclictest3868974-21sshd21:22:423
386198999581,52cyclictest3867160-21systemd-run20:50:003
386198999572,51cyclictest3866346-21sshd20:32:413
386198999572,51cyclictest363-21snmpd21:16:573
386198999572,50cyclictest3877317-21munin-run00:05:013
386198999571,52cyclictest3863216-21sshd19:30:413
386198999571,51cyclictest3874924-21sshd23:17:413
3861985995724,9cyclictest235-21systemd-journal19:17:132
3861985995724,9cyclictest235-21systemd-journal19:17:132
386198999562,50cyclictest363-21snmpd00:35:483
386198999561,52cyclictest3872844-21sshd22:37:423
386198999561,51cyclictest3862972-21sshd19:27:153
386198999561,51cyclictest3862330-21cat19:15:023
386198999561,51cyclictest363-21snmpd22:52:173
386198999561,51cyclictest363-21snmpd22:52:173
386198999561,50cyclictest363-21snmpd21:08:263
386198999552,50cyclictest3876526-21munin-run23:50:023
386198999552,49cyclictest3865566-21sshd20:18:413
386198999551,50cyclictest363-21snmpd00:06:183
386198999551,50cyclictest363-21snmpd00:06:183
386198999551,4cyclictest363-21snmpd19:41:403
386198999542,47cyclictest363-21snmpd20:10:063
386198999541,50cyclictest3867373-21sshd20:51:413
386198999541,47cyclictest3862596-21wc19:20:023
386198999541,47cyclictest3862596-21wc19:20:023
386198999532,46cyclictest3871293-21sshd22:07:423
386198999532,46cyclictest3871293-21sshd22:07:423
386198999531,6cyclictest3876735-21sshd23:51:413
3861979995334,13cyclictest1-21systemd19:20:010
3861979995334,13cyclictest1-21systemd19:20:000
386198999521,6cyclictest3877785-21sshd00:12:513
386198999513,43cyclictest0-21swapper/323:25:343
386197999507,5cyclictest131rcu_preempt19:15:020
3861979995039,7cyclictest3866608-21cron20:40:000
3861979995036,11cyclictest12-21ksoftirqd/000:20:000
3861985994932,12cyclictest235-21systemd-journal21:35:002
3861983994934,12cyclictest3868728-21systemctl21:20:001
3861985994832,11cyclictest235-21systemd-journal00:20:012
3861983994837,7cyclictest306-21in:imuxsock00:30:001
3861979994832,12cyclictest1-21systemd22:40:010
3861979994829,13cyclictest235-21systemd-journal22:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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