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2025-05-09 - 05:45

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 May 09, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273203998516,27cyclictest285944-21modprobe23:20:002
27319699756,37cyclictest0-21swapper/021:20:020
27319699756,37cyclictest0-21swapper/021:20:020
27319899746,16cyclictest23-21ksoftirqd/122:35:001
27320699726,17cyclictest276709-21modprobe20:20:003
273203996921,14cyclictest274405-21latency_hist19:35:012
273206996829,12cyclictest37-21ksoftirqd/323:55:003
27320699674,26cyclictest283648-21munin-run22:35:003
273206996618,14cyclictest1-21systemd20:45:013
273196996636,26cyclictest284403-21sshd22:48:250
273196996419,11cyclictest275196-21unin-run19:50:010
273196996338,19cyclictest12-21ksoftirqd/000:05:020
273198995937,16cyclictest235-21systemd-journal20:00:011
273196995935,4cyclictest288045-21munin-run00:00:020
273203995814,31cyclictest273192-21cyclictest20:00:022
273196995826,27cyclictest277643-21latency_hist20:35:020
273196995739,14cyclictest286961-21cron23:40:000
273196995714,38cyclictest274932-21modprobe19:45:010
273196995641,11cyclictest274126-21sshd19:25:250
273196995641,11cyclictest274126-21sshd19:25:250
273198995512,8cyclictest23-21ksoftirqd/121:25:001
273196995548,4cyclictest16950irq/224-800000023:00:000
273196995518,33cyclictest616-21sendmail-mta21:24:250
27319899544,13cyclictest23-21ksoftirqd/123:40:001
27319899542,16cyclictest23-21ksoftirqd/100:40:001
27319699543,8cyclictest283897-21sh22:40:010
273196995413,13cyclictest1-21systemd21:47:250
273206995339,9cyclictest235-21systemd-journal20:15:003
273206995339,9cyclictest235-21systemd-journal20:14:593
273198995311,6cyclictest131rcu_preempt21:10:011
27319699535,8cyclictest131rcu_preempt23:50:030
273196995340,8cyclictest274373-21sshd19:30:250
273196995338,11cyclictest274640-21sshd19:39:250
273196995337,12cyclictest273358-21sshd19:14:250
273203995237,11cyclictest288296-21munin-run00:05:012
273203995237,11cyclictest273390-21munin-run19:15:012
273203995235,13cyclictest290040-21sshd00:38:252
273203995232,16cyclictest283869-21sshd22:36:252
27319899522,5cyclictest131rcu_preempt20:50:011
273196995238,10cyclictest279046-21munin-run21:05:010
273196995238,10cyclictest278013-21munin-run20:45:000
273196995212,36cyclictest289029-21modprobe00:19:590
273206995131,14cyclictest235-21systemd-journal20:00:013
273203995138,10cyclictest273922-21munin-run19:25:002
273203995137,10cyclictest287501-21munin-run23:50:002
273203995136,12cyclictest282084-21sshd22:00:262
273203995134,13cyclictest288753-21sshd00:11:252
273203995122,23cyclictest276667-21modprobe20:15:022
27320399511,9cyclictest283646-21munin-plugin-st22:35:002
273196995137,10cyclictest279256-21sshd21:07:250
273206995034,12cyclictest272-21dbus-daemon22:40:013
273203995038,9cyclictest274139-21sshd19:28:252
273203995038,9cyclictest274139-21sshd19:28:252
273203995037,9cyclictest48-21kcompactd023:30:382
273203995037,10cyclictest288504-21sshd00:06:252
273203995037,10cyclictest280785-21sshd21:35:252
273203995037,10cyclictest277718-21sshd20:39:252
273203995037,10cyclictest276184-21sshd20:08:262
273203995036,10cyclictest287720-21sshd23:51:262
273203995036,10cyclictest285212-21munin-run23:05:012
273203995036,10cyclictest284438-21munin-run22:50:012
273203995035,12cyclictest282830-21sshd22:15:252
273203995035,11cyclictest282592-21sshd22:13:252
273203995035,11cyclictest280072-21munin-run21:25:002
273203995033,13cyclictest277461-21sshd20:32:252
273203995032,13cyclictest286231-21munin-run23:25:012
27319899505,10cyclictest23-21ksoftirqd/123:50:021
273198995038,9cyclictest23-21ksoftirqd/121:40:011
273198995015,6cyclictest131rcu_preempt22:00:001
273196995036,11cyclictest276969-21sshd20:23:250
273196995036,10cyclictest276426-21sshd20:11:250
273196995036,10cyclictest276426-21sshd20:11:250
273196995036,10cyclictest275957-21munin-run20:05:000
273196995033,14cyclictest287218-21sshd23:40:250
273196995033,14cyclictest287218-21sshd23:40:250
273196995033,13cyclictest285165-21sshd23:00:250
273206994936,6cyclictest306-21in:imuxsock21:00:013
273203994940,6cyclictest281314-21sshd21:46:252
273203994936,8cyclictest281107-21munin-run21:45:012
273203994936,10cyclictest284176-21munin-run22:45:012
273203994936,10cyclictest283374-21sshd22:27:252
273203994936,10cyclictest283125-21sshd22:22:262
273203994936,10cyclictest281813-21sshd21:57:252
273203994936,10cyclictest281592-21munin-run21:55:002
273203994936,10cyclictest278227-21sshd20:45:252
273203994935,10cyclictest287223-21sshd23:41:252
273203994935,10cyclictest287223-21sshd23:41:252
273203994935,10cyclictest278765-21munin-run20:59:592
273203994935,10cyclictest275433-21munin-run19:55:002
273203994934,12cyclictest279521-21sshd21:14:252
273203994933,12cyclictest273676-21munin-run19:20:022
273203994933,11cyclictest48-21kcompactd023:11:462
273198994921,8cyclictest23-21ksoftirqd/123:55:011
273198994919,15cyclictest23-21ksoftirqd/123:20:301
273196994936,10cyclictest287716-21sshd23:50:250
273196994936,10cyclictest281574-21sshd21:54:250
273196994935,11cyclictest280791-21sshd21:36:250
273196994934,10cyclictest278260-21munin-run20:50:010
273196994933,12cyclictest278477-21sshd20:50:250
273196994931,14cyclictest363-21snmpd22:04:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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