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2026-03-29 - 03:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack4slot6s.osadl.org (updated Sun Mar 29, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2811722610,2sleep028118-21cat19:25:150
1229222350,2sleep012293-21cat22:35:140
1808222000,3sleep018080-21grep20:50:280
447121230,4chrt4470-21wc00:10:190
327921190,3sleep03277-21egrep19:55:130
2007821150,3chrt20079-21/usr/sbin/munin23:05:160
240199911483,17cyclictest24333-21/usr/sbin/munin21:15:260
240199911383,18cyclictest26778-21memory21:25:180
240199911183,16cyclictest15246-21/usr/sbin/munin20:40:220
240199911181,18cyclictest8336-21munin-node22:20:100
240199911083,15cyclictest11197-21ntp_states22:30:220
240199911079,16cyclictest22974-21tr21:10:210
240199910983,15cyclictest16229-21seq20:45:050
240199910882,14cyclictest438-21/usr/sbin/munin23:55:130
240199910881,16cyclictest6161-21vmstat00:15:300
240199910878,17cyclictest29945-21runrttasks21:37:020
240199910779,16cyclictest6875-21/usr/sbin/munin00:20:260
240199910779,15cyclictest397-21seq19:43:370
240199910773,20cyclictest17422-21sshd22:55:150
240199910682,14cyclictest13942-21sh20:35:210
240199910681,15cyclictest7429-21ntpq20:10:210
240199910681,15cyclictest7083-21df_inode22:15:130
240199910679,15cyclictest27646-21date23:35:020
240199910678,17cyclictest10998-21latency_hist20:25:020
240199910676,21cyclictest1911-21df_inode21:55:140
240199910675,18cyclictest1614-21chrt19:48:020
240199910675,17cyclictest10756-21seq22:29:530
240199910671,21cyclictest29284-21/usr/sbin/munin19:30:150
240199910580,14cyclictest25904-21runrttasks23:26:580
240199910579,14cyclictest27973-21ntp_states23:35:220
240199910577,17cyclictest855-21ntp_states21:50:220
240199910577,17cyclictest27167-21run-parts19:20:260
240199910571,22cyclictest2988-21/usr/sbin/munin00:05:250
240199910569,21cyclictest31561-21/usr/sbin/munin23:50:300
240199910478,17cyclictest13619-21latency_hist20:35:020
240199910478,15cyclictest19399-21users20:55:290
240199910478,14cyclictest14844-21df_inode22:45:140
240199910379,13cyclictest8724-21runrttasks20:15:220
240199910379,13cyclictest32562-21runrttasks21:47:140
240199910379,13cyclictest25690-21ntp_states19:15:210
240199910378,15cyclictest2291-21users00:00:300
240199910378,14cyclictest26466-21latency_hist21:25:010
240199910378,14cyclictest25043-21cut23:25:010
240199910377,16cyclictest19070-21sendmail_mailst23:00:250
240199910376,16cyclictest11323-21ntp_states20:25:210
240199910373,18cyclictest9723-21ntp_states00:30:210
240199910278,15cyclictest24403-21ntp_states19:10:220
240199910278,14cyclictest21855-21/usr/sbin/munin21:05:300
240199910277,13cyclictest6156-21ntp_states20:05:220
240199910277,13cyclictest13784-21ntp_states22:40:220
240199910275,15cyclictest2393-21wc19:50:250
240199910178,14cyclictest10778-21df00:35:140
240199910177,14cyclictest30431-21latency23:45:170
240199910176,13cyclictest30855-21ntp_states19:35:210
240199910078,13cyclictest23122-21seq23:15:300
240199910067,20cyclictest28996-21/usr/sbin/munin23:40:140
240199910066,19cyclictest307-21munin-node22:05:100
240199910063,24cyclictest16063-21/usr/sbin/munin22:50:170
240199910060,27cyclictest8202-21egrep00:25:110
240199910060,18cyclictest114-21systemd-journal23:10:200
24019999976,13cyclictest28304-21grep21:30:250
24019999975,14cyclictest6025-21ntp_states22:10:220
24019999974,15cyclictest3226-21df_inode22:00:140
24019999967,16cyclictest30463-21/usr/sbin/munin21:40:140
24019999874,15cyclictest20914-21chrt21:02:020
24019999763,22cyclictest4581-21/usr/sbin/munin20:00:180
24019999361,18cyclictest24063-21wc19:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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