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2026-06-14 - 16:43

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 Jun 14, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2260422470,3sleep022605-21which11:40:260
962022390,2sleep09622-21missed_timers08:45:190
2499322090,3sleep024991-21grep11:50:190
1844221430,3sleep018439-21cat09:20:020
285621330,5chrt2832-21munin-run08:20:010
2026521130,4sleep019935-21/usr/sbin/munin07:20:260
172309911384,18cyclictest15926-21/usr/sbin/munin09:10:130
172309911384,16cyclictest14397-21cpu11:10:100
172309911382,20cyclictest14575-21/usr/sbin/munin09:05:130
172309911183,15cyclictest19233-21chrt11:28:170
172309911181,16cyclictest17290-21ntp_states11:20:220
172309911082,17cyclictest23726-21/usr/sbin/munin09:40:140
172309911082,15cyclictest22085-21chrt09:34:100
172309911081,18cyclictest30674-21chrt12:11:530
172309910879,17cyclictest369-21/usr/sbin/munin10:15:180
172309910873,24cyclictest3826-21latency_hist12:35:020
172309910782,14cyclictest28176-21seq09:56:130
172309910781,15cyclictest31844-21ntpq08:05:250
172309910779,16cyclictest9093-21chrt08:43:290
172309910683,13cyclictest288-21snmpd07:34:210
172309910682,15cyclictest13362-21forks09:00:130
172309910681,14cyclictest7100-21ntp_states08:35:210
172309910680,15cyclictest17624-21ntp_states07:10:210
172309910677,16cyclictest3120-21/usr/sbin/munin10:25:260
172309910581,13cyclictest28898-21ntp_states12:05:220
172309910580,15cyclictest4073-21memory12:35:170
172309910578,14cyclictest31370-21/usr/sbin/munin12:15:180
172309910576,17cyclictest19617-21df11:30:100
172309910480,15cyclictest7902-21latency_hist10:45:010
172309910479,15cyclictest13782-21runrttasks11:05:570
172309910479,14cyclictest4844-21/usr/sbin/munin08:25:290
172309910479,14cyclictest27948-21ntp_states07:50:220
172309910478,16cyclictest12111-21/usr/sbin/munin08:55:140
172309910478,15cyclictest2728-21cat10:25:010
172309910478,14cyclictest22191-21sshd07:28:340
172309910477,17cyclictest32687-21/usr/sbin/munin12:20:170
172309910477,16cyclictest11402-21seq10:57:490
172309910477,15cyclictest6556-21chrt08:33:570
172309910476,17cyclictest9688-21grep10:50:250
172309910474,16cyclictest19756-21/usr/sbin/munin09:25:250
172309910470,21cyclictest10943-21ntpq08:50:190
172309910459,20cyclictest23448-21/usr/sbin/munin11:45:250
172309910459,17cyclictest18683-21wc09:20:190
172309910377,14cyclictest22508-21memory09:35:170
172309910375,16cyclictest16286-21seq11:15:280
172309910374,16cyclictest1508-21seq12:25:160
172309910278,15cyclictest4655-21users10:30:250
172309910278,15cyclictest25154-21df_inode07:40:130
172309910277,14cyclictest8820-21seq10:47:410
172309910276,15cyclictest22029-21munin-run11:40:010
172309910276,15cyclictest19795-21munin-run07:20:020
172309910273,17cyclictest23780-21/usr/sbin/munin07:35:170
172309910179,13cyclictest25101-21memory09:45:170
172309910177,14cyclictest26536-21sed07:45:170
172309910174,15cyclictest27186-21/usr/sbin/munin12:00:020
172309910173,14cyclictest29318-21processes07:55:250
172309910167,20cyclictest32100-21sshd10:11:330
172309910074,16cyclictest762-21runrttasks08:10:260
172309910073,15cyclictest3573-21sshd08:20:290
172309910068,20cyclictest26198-21/usr/sbin/munin09:50:260
172309910065,21cyclictest30483-21ps10:05:290
172309910064,22cyclictest27325-21/usr/sbin/munin12:00:170
17230999974,14cyclictest313872sleep008:04:500
17230999971,15cyclictest5541-21memory10:35:170
17230999875,14cyclictest29076-21ntp_states10:00:210
17230999664,19cyclictest11822-21/usr/sbin/munin11:00:200
17230999564,20cyclictest17255-21date07:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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