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2026-07-24 - 08:23

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 792 highest latencies:
System rack4slot6s.osadl.org (updated Fri Jul 24, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1752522520,3sleep017524-21wc23:50:250
589522450,2sleep05898-21latency21:00:170
2766922120,3sleep027672-21wc00:30:170
2682221430,2sleep026823-21awk20:15:230
930721300,3chrt9308-21modprobe23:20:000
1907221260,3chrt19069-21ntp_states19:45:220
2145421240,3sleep021455-21if_err_eth019:55:160
431121200,3chrt4247-21latency_hist20:55:010
8728211519,78sleep08808-21processes19:05:220
1249821150,2sleep012499-21ntp_states21:25:230
945721100,3sleep09473-21awk21:15:000
1596721100,4sleep015886-21/usr/sbin/munin23:45:150
1224521090,3sleep012246-21latency_hist19:20:020
3158121040,3sleep031621-21df22:40:120
303402970,4sleep030395-21awk22:35:150
236882820,3sleep023689-21latency_hist22:10:010
6112790,4sleep0655-21ntpq22:45:210
9633997347,15cyclictest26624-21/usr/sbin/munin00:25:250
9633997328,15cyclictest19743-21latency_hist00:00:010
9633997232,29cyclictest10229-21/usr/sbin/munin19:10:270
9633997039,19cyclictest6112-21/usr/sbin/munin23:05:280
9633996943,15cyclictest22484-21irqstats00:10:170
9633996942,17cyclictest25534-21awk00:20:300
9633996942,15cyclictest2107-21ntp_states20:45:260
9633996845,12cyclictest26272-21pluginstate22:20:020
9633996842,16cyclictest15944-21runrttasks19:34:090
9633996842,15cyclictest15941-21/usr/sbin/munin21:40:010
316342680,2sleep031635-21latency_hist20:35:020
9633996742,15cyclictest31862-21memory20:35:180
9633996741,16cyclictest13674-21memory21:30:180
9633996739,16cyclictest26757-21/usr/sbin/munin22:20:250
9633996738,18cyclictest13892-21awk19:25:220
9633996642,14cyclictest22710-21df_inode20:00:140
9633996642,13cyclictest7435-21users23:10:300
9633996641,15cyclictest28371-21cat20:20:250
9633996641,15cyclictest11193-21mailstats23:25:250
9633996638,15cyclictest28848-21df_inode00:35:130
9633996629,22cyclictest2269-21users22:50:310
9633996539,15cyclictest17078-21runrttasks19:37:530
9633996539,14cyclictest7556-21/usr/sbin/munin21:05:300
9633996539,13cyclictest288-21snmpd19:20:410
9633996537,18cyclictest18750-21date19:45:020
9633996442,13cyclictest29570-21users22:30:290
9633996441,13cyclictest20073-21/usr/sbin/munin21:55:170
9633996441,12cyclictest24863-21latency_hist00:20:020
9633996440,17cyclictest3104-21irqstats22:55:170
9633996440,15cyclictest1223-21runrttasks20:41:160
9633996440,14cyclictest4770-21/usr/sbin/munin20:55:260
9633996440,13cyclictest13342-21/usr/sbin/munin23:35:100
9633996437,16cyclictest15403-21runrttasks23:42:050
9633996435,16cyclictest12606-21users23:30:300
9633996341,11cyclictest4767-21switchtime23:00:300
9633996329,21cyclictest20592-21runrttasks19:50:290
9633996239,14cyclictest18699-21df21:50:140
9633996238,14cyclictest27879-21memory22:25:180
9633996238,14cyclictest21169-21cat00:05:180
9633996238,13cyclictest24575-21seq22:11:490
9633996236,16cyclictest17055-21runrttasks21:43:350
9633996229,20cyclictest9597-21/usr/sbin/munin21:15:160
9633996136,14cyclictest1-21systemd20:14:180
9633996135,16cyclictest11240-21/usr/sbin/munin21:20:280
9633996026,22cyclictest29106-21/usr/sbin/munin20:25:160
9633996025,22cyclictest24131-21memory20:05:180
9633995925,21cyclictest9587-21irqstats23:20:170
9633995911,14cyclictest17519-21sshd21:45:170
9633995836,14cyclictest18743-21runrttasks23:55:220
9633995831,16cyclictest22392-21modprobe22:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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