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2025-11-27 - 18:34

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 Thu Nov 27, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2116222370,2sleep021165-21idleruntime10:45:160
1055221930,3sleep010553-21grep12:10:010
2255021470,2sleep022551-21/usr/sbin/munin10:50:180
49621360,2sleep0497-21/usr/sbin/munin09:25:160
39421350,3chrt396-21idleruntime-cro07:20:000
588021300,4chrt5882-21sed07:40:200
1215721250,4chrt12155-21ntpq12:15:230
29365211819,77sleep029376-21ntp_states07:05:230
8482980,4sleep0906-21processes07:20:260
29602960,3sleep02962-21cpu09:35:080
316392906,11sleep031694-21ntpq11:25:230
189362880,2sleep018939-21mailstats10:35:290
42792856,12sleep04320-21memory11:45:190
146612858,63sleep014677-21sed12:25:180
30288996426,14cyclictest22558-21df08:45:150
30288996222,14cyclictest279-21sshd10:15:340
30288996135,16cyclictest4690-21/usr/sbin/munin09:40:270
30288996110,21cyclictest7277-21runrttasks07:45:220
3028899609,17cyclictest14785-21df_inode08:15:140
30288996034,16cyclictest1674-21/usr/sbin/munin11:35:160
30288996028,24cyclictest17101-21latency_hist10:30:020
30288996021,16cyclictest10671-21runrttasks07:59:460
30288996013,14cyclictest28737-21date11:15:010
30288996012,18cyclictest29999-21munin-run11:20:010
30288996010,16cyclictest26374-21/usr/sbin/munin09:00:180
3028899599,17cyclictest25243-21ntp_states11:00:230
3028899598,17cyclictest12153-21/usr/sbin/munin08:05:140
3028899597,15cyclictest5475-21df_inode11:50:130
30288995911,16cyclictest16332-21ntp_states08:20:220
3028899589,18cyclictest3102-21/usr/sbin/munin07:30:300
3028899587,17cyclictest9441-21/usr/sbin/munin10:00:300
3028899586,17cyclictest8007-21/usr/sbin/munin12:00:270
30288995833,17cyclictest17242-21/usr/sbin/munin10:30:110
30288995833,16cyclictest3792-21runrttasks11:43:180
30288995833,16cyclictest10700-21/usr/sbin/munin12:10:170
30288995824,10cyclictest0-21swapper09:58:050
30288995810,22cyclictest945-21seq11:31:120
30288995810,19cyclictest13482-21ntpq12:20:220
30288995810,16cyclictest19206-21users08:30:300
30288995810,15cyclictest6985-21ntp_states11:55:220
30288995810,15cyclictest14621-21/usr/sbin/munin10:20:260
3028899579,15cyclictest17329-21/usr/sbin/munin08:25:180
3028899579,14cyclictest17786-21seq12:36:350
3028899578,17cyclictest30884-21seq09:15:420
3028899577,17cyclictest6846-21/usr/sbin/munin09:50:280
30288995731,16cyclictest14695-21latency_hist08:15:010
30288995717,14cyclictest20489-21who08:35:270
30288995710,16cyclictest30654-21seq07:10:210
30288995710,16cyclictest21459-21/usr/sbin/munin08:40:190
3028899569,15cyclictest5562-21/usr/sbin/munin09:45:190
3028899569,15cyclictest16163-21find12:30:260
3028899568,16cyclictest10736-21/usr/sbin/munin10:05:250
3028899568,15cyclictest25504-21/usr/sbin/munin08:55:260
3028899567,17cyclictest5480-21chrt07:39:320
30288995634,14cyclictest19862-21/usr/sbin/munin10:40:140
30288995632,15cyclictest32018-21/usr/sbin/munin09:20:290
30288995617,11cyclictest12907-21seq10:12:490
30288995610,15cyclictest28169-21ls09:05:250
3028899558,16cyclictest8273-21/usr/sbin/munin07:50:310
3028899558,14cyclictest1816-21/usr/sbin/munin07:25:280
30288995532,14cyclictest30214-21/usr/sbin/munin11:20:160
30288995532,14cyclictest24333-21/usr/sbin/munin08:50:300
3028899549,16cyclictest10916-21df08:00:100
30288995430,15cyclictest29070-21/usr/sbin/munin09:10:140
30288995430,15cyclictest26249-21/usr/sbin/munin11:05:110
30288995412,15cyclictest23697-21df10:55:110
3028899539,15cyclictest1777-21/usr/sbin/munin09:30:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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