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2025-12-28 - 07:54

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 Sun Dec 28, 2025 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
533022440,3sleep05331-21readlink00:25:270
868622150,2sleep08687-21latency_hist00:40:020
387221150,4chrt3871-21/usr/sbin/munin00:20:180
883421140,3chrt8829-21latency_hist22:35:000
1436821120,4chrt14102-21/usr/sbin/munin22:55:210
246521100,4chrt2463-21sshd20:04:290
3271021090,4chrt32711-21awk22:00:290
1204121090,3chrt12042-21cat22:45:260
818821070,3chrt8190-21processes20:25:270
1295321050,3chrt12957-21interrupts22:50:160
313652980,3sleep031397-21/usr/sbin/munin21:55:260
39622950,3sleep03970-21grep22:15:190
264322950,3sleep026506-21mailstats19:30:260
235732916,11sleep023576-21df_inode19:20:150
25472868,65sleep02553-21df_inode22:10:140
232202840,4sleep023159-21/usr/sbin/munin23:30:160
179562790,3sleep017955-21sort23:10:010
1988527219,30sleep019898-21ntp_states19:05:230
20809996128,21cyclictest20808-21runrttasks21:15:140
20809996111,15cyclictest10254-21/usr/sbin/munin22:40:200
20809996034,17cyclictest26161-21/usr/sbin/munin21:35:210
20809996010,18cyclictest9491-21/usr/sbin/munin22:35:280
2080999596,19cyclictest24793-21/usr/sbin/munin19:25:140
20809995920,15cyclictest276-21runrttasks23:27:230
170802590,3sleep017078-21cat21:00:190
2080999589,16cyclictest222822sleep019:15:160
2080999587,18cyclictest6463-21ntpq00:30:200
20809995834,16cyclictest24649-21/usr/sbin/munin23:35:190
20809995834,15cyclictest30570-21runrttasks21:52:000
20809995833,16cyclictest2820-21/usr/sbin/munin00:15:270
20809995832,16cyclictest2725-21/usr/sbin/munin20:05:160
20809995821,13cyclictest24624-21/usr/sbin/munin21:30:280
2080999579,14cyclictest27645-21ntp_states19:35:220
2080999578,18cyclictest27216-21/usr/sbin/munin21:40:290
2080999578,17cyclictest22063-21/usr/sbin/munin21:20:160
2080999578,16cyclictest11707-21/usr/sbin/munin20:40:170
2080999578,16cyclictest10398-21/usr/sbin/munin20:35:200
2080999577,17cyclictest23342-21/usr/sbin/munin21:25:280
20809995732,18cyclictest30358-21/usr/sbin/munin19:45:270
20809995732,17cyclictest16583-21runrttasks20:59:000
20809995732,16cyclictest29154-21/usr/sbin/munin19:40:280
20809995732,16cyclictest20446-21runrttasks21:13:430
20809995732,15cyclictest19147-21idleruntime-cro23:15:000
20809995731,17cyclictest29741-21/usr/sbin/munin23:55:160
20809995728,21cyclictest32104-21latency_hist00:05:010
20809995712,19cyclictest29480-21munin-run23:55:000
20809995710,17cyclictest18442-21ntp_states21:05:230
20809995710,15cyclictest6199-21seq22:24:390
2080999569,15cyclictest285-21sshd23:43:300
2080999568,17cyclictest3947-21/usr/sbin/munin20:10:280
2080999567,17cyclictest1209-21/usr/sbin/munin22:05:170
2080999567,16cyclictest9325-21/usr/sbin/munin20:30:220
2080999567,16cyclictest6547-21/usr/sbin/munin20:20:300
20809995632,16cyclictest16345-21runrttasks23:03:090
20809995632,16cyclictest13933-21runrttasks20:48:180
20809995630,16cyclictest21187-21sshd23:20:300
20809995630,15cyclictest5340-21/usr/sbin/munin20:15:150
20809995629,16cyclictest32568-21/usr/sbin/munin19:55:120
20809995627,19cyclictest32256-21/usr/sbin/munin00:05:140
20809995620,13cyclictest31446-21missed_timers19:50:190
20809995610,15cyclictest14417-21chrt20:50:170
2080999559,12cyclictest20911-21/usr/sbin/munin19:10:160
2080999558,18cyclictest1319-21chrt00:10:230
2080999557,16cyclictest28503-21/usr/sbin/munin21:45:120
20809995510,13cyclictest19317-21grep23:15:120
20809995432,15cyclictest27781-21runrttasks23:46:390
20809995410,14cyclictest6661-21ntp_states22:25:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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