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2026-06-29 - 15:51

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Mon Jun 29, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
508221350,4sleep05081-21wc10:25:280
3117321320,2sleep031172-21switchtime07:55:270
189819912635,15cyclictest21589-21/usr/sbin/munin11:30:200
2852421230,3sleep028520-21find07:45:230
189819912327,16cyclictest11190-21/usr/sbin/munin10:50:200
1898721210,3sleep018989-21latency_hist07:10:030
189819911928,15cyclictest16844-21/usr/sbin/munin09:05:280
3071121180,4chrt30709-21grep10:00:170
189819911629,14cyclictest29676-21/usr/sbin/munin12:00:310
189819911527,15cyclictest23958-21runrttasks07:28:410
18981991149,31cyclictest26852-21memory09:45:180
189819911328,15cyclictest6609-21runrttasks10:31:590
189819911327,15cyclictest8285-21runrttasks08:33:470
189819911327,15cyclictest15886-21runrttasks09:02:270
189819911327,14cyclictest19696-21runrttasks07:10:320
189819911228,15cyclictest6157-21/usr/sbin/munin12:35:280
189819911128,16cyclictest11887-21runrttasks08:46:290
189819911127,14cyclictest3942-21runrttasks12:27:380
189819911127,13cyclictest9958-21/usr/sbin/munin10:45:200
189819911111,14cyclictest4856-21irqstats08:20:150
18981991099,18cyclictest25250-21runrttasks09:40:000
18981991099,15cyclictest17913-21/usr/sbin/munin11:15:270
18981991098,14cyclictest17746-21if_eth009:10:170
189819910828,15cyclictest26237-21runrttasks07:36:180
189819910823,16cyclictest16447-21ntp_states11:10:240
189819910811,20cyclictest30956-21users12:05:280
18981991078,12cyclictest2226-21ntp_states10:15:240
18981991077,14cyclictest22892-21ntp_states11:35:230
189819910727,15cyclictest29937-21runrttasks09:56:190
18981991067,15cyclictest24160-21/usr/sbin/munin11:40:180
18981991067,13cyclictest39322chrt10:21:020
18981991059,13cyclictest1118-21seq08:05:220
18981991058,15cyclictest833-21load10:10:160
189819910510,15cyclictest13439-21munin-run11:00:000
18981991049,13cyclictest223542sleep007:21:000
18981991047,15cyclictest31909-21ntpq12:10:190
18981991047,14cyclictest8690-21tr10:40:220
18981991046,14cyclictest14009-21/usr/sbin/munin11:00:240
18981991039,17cyclictest27121-21ntpq07:40:220
18981991037,12cyclictest23298-21ls09:30:290
18981991028,16cyclictest8861-21ntp_states08:35:250
18981991027,12cyclictest157072sleep011:07:260
18981991018,14cyclictest25508-21seq07:35:020
18981991009,14cyclictest276-21runrttasks08:02:160
1898199998,15cyclictest21386-21idleruntime-cro09:25:010
1898199997,13cyclictest20931-21sed07:15:280
110222990,3sleep011031-21cron08:45:000
1898199988,14cyclictest19196-21sh09:15:220
9032860,4sleep0971-21switchtime12:15:260
18981996035,16cyclictest7437-21/usr/sbin/munin10:35:250
1898199599,14cyclictest2116-21/usr/sbin/munin08:10:270
1898199598,18cyclictest1791-21/usr/sbin/munin12:20:140
1898199589,16cyclictest19074-21/usr/sbin/munin11:20:230
1898199589,15cyclictest27949-21/usr/sbin/munin09:50:200
18981995834,16cyclictest13912-21/usr/sbin/munin08:55:190
18981995833,17cyclictest22095-21/usr/sbin/munin09:25:270
1898199579,16cyclictest27764-21/usr/sbin/munin11:55:270
1898199579,15cyclictest32025-21/usr/sbin/munin10:05:200
1898199577,18cyclictest288-21snmpd11:49:160
18981995732,16cyclictest26576-21/usr/sbin/munin11:50:130
18981995730,17cyclictest4495-21/usr/sbin/munin12:30:140
1898199568,17cyclictest25377-21/usr/sbin/munin09:40:230
1898199559,16cyclictest4578-21munin-run08:20:010
1898199559,16cyclictest29404-21/usr/sbin/munin07:50:150
1898199559,14cyclictest12627-21memory08:50:160
18981995410,13cyclictest20036-21/usr/sbin/munin11:25:180
1898199527,17cyclictest5999-21/usr/sbin/munin08:25:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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