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2026-07-12 - 20:13

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 Sun Jul 12, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2806622500,2sleep028067-21latency_hist09:15:010
3112222200,3sleep031120-21grep09:25:240
1137621600,4sleep011444-21/usr/sbin/munin12:20:250
2019621590,3sleep020195-21latency_hist10:50:020
28229214020,30sleep028240-21latency_hist07:10:010
1169321190,3chrt11690-21grep10:15:260
2413821070,4sleep024163-21munin-run09:00:000
141752960,4sleep014186-21ls08:20:190
126682936,9sleep012672-21irqstats10:20:180
23422915,11sleep02392-21df07:35:120
217762890,3sleep021804-21idleruntime08:50:160
271232880,3sleep027185-21switchtime11:15:280
76232875,9sleep07643-21irqstats07:55:170
325842820,3sleep032587-21proc_pri07:25:230
309992800,2sleep031000-21grep07:20:110
152702795,63sleep015320-21df08:25:120
178902784,8sleep017896-21df_inode08:35:130
21312775,60sleep02148-21/usr/sbin/munin11:45:170
13222775,59sleep01394-21/usr/sbin/munin09:35:280
182182745,57sleep018271-21users10:40:280
322222710,2sleep032223-21/usr/sbin/munin11:35:240
297752700,3sleep029776-21/usr/sbin/munin09:20:220
28253996711,19cyclictest5040-21ntp_states09:50:210
2825399608,18cyclictest6039-21/usr/sbin/munin09:55:150
28253996026,24cyclictest9653-21latency_hist12:15:010
28253996020,13cyclictest23126-21ntp_states11:00:220
2825399599,16cyclictest21548-21seq08:49:470
2825399599,15cyclictest12632-21ntp_states12:25:250
2825399597,17cyclictest14064-21ntpq10:25:180
28253995911,18cyclictest16517-21irqstats10:35:170
28253995910,18cyclictest9096-21ntp_states08:00:210
2825399589,17cyclictest11387-21/usr/sbin/munin08:10:280
2825399589,15cyclictest1310-21users11:40:300
2825399588,17cyclictest25413-21/usr/sbin/munin11:10:190
2825399588,17cyclictest13868-21sendmail08:20:000
2825399588,16cyclictest3655-21/usr/sbin/munin07:40:260
2825399588,16cyclictest30707-21sshd07:19:190
28253995833,17cyclictest4348-21runrttasks11:54:180
28253995811,19cyclictest6083-21sort12:00:190
2825399579,19cyclictest28278-21awk11:20:200
2825399578,19cyclictest288-21snmpd09:30:180
2825399578,15cyclictest10102-21/usr/sbin/munin08:05:190
28253995734,15cyclictest7702-21/usr/sbin/munin12:05:280
28253995733,16cyclictest26180-21/usr/sbin/munin09:05:270
28253995733,16cyclictest24244-21/usr/sbin/munin11:05:160
28253995729,18cyclictest3444-21latency_hist09:45:020
2825399569,14cyclictest9967-21/usr/sbin/munin10:10:120
2825399569,14cyclictest21376-21sshd10:54:520
2825399568,16cyclictest21531-21/usr/sbin/munin10:55:230
2825399568,15cyclictest4709-21sshd11:55:150
2825399568,15cyclictest3733-21ntpq09:45:190
2825399568,14cyclictest8920-21/usr/sbin/munin10:05:210
28253995633,15cyclictest5277-21/usr/sbin/munin07:45:240
28253995632,16cyclictest16633-21/usr/sbin/munin08:30:160
28253995630,16cyclictest28953-21runrttasks09:16:570
28253995612,15cyclictest1114-21df07:30:130
2825399559,18cyclictest24772-21grep09:00:280
2825399559,15cyclictest28614-21ntpq07:10:210
2825399559,15cyclictest19144-21/usr/sbin/munin08:40:160
28253995532,15cyclictest7422-21/usr/sbin/munin10:00:160
28253995532,15cyclictest6812-21runrttasks07:50:290
28253995530,15cyclictest10001-21/usr/sbin/munin12:15:210
28253995528,17cyclictest29627-21/usr/sbin/munin11:25:230
28253995525,20cyclictest0-21swapper12:30:090
28253995427,15cyclictest15578-21runrttasks12:36:040
28253995330,14cyclictest15798-21runrttasks10:31:200
28253995329,14cyclictest31483-21runrttasks11:32:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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