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2026-09-15 - 05:11

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 Tue Sep 15, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1882622670,3sleep018823-21cat22:00:020
1192122460,3sleep011919-21ls19:25:290
1366322440,3sleep013666-21latency_hist21:40:010
1964322220,3sleep019641-21grep19:55:280
1690521310,3chrt16906-21find19:45:250
1473321270,4chrt14734-21modprobe23:50:010
73599912431,15cyclictest8455-21/usr/sbin/munin23:25:110
2705021200,3chrt27049-21/usr/sbin/munin00:35:280
73599911928,15cyclictest26291-21runrttasks22:28:070
73599911829,15cyclictest28693-21runrttasks22:36:450
73599911824,14cyclictest24498-21/usr/sbin/munin20:15:200
73599911730,15cyclictest17175-21runrttasks21:52:340
73599911712,20cyclictest29431-21memory22:40:180
73599911629,15cyclictest19628-21runrttasks22:01:200
73599911627,17cyclictest1866-21runrttasks20:54:110
73599911611,21cyclictest6052-21df_inode21:10:150
73599911611,17cyclictest31868-21latency_hist20:45:010
633621160,3chrt6334-21grep23:15:250
7359991159,14cyclictest24370-21ntp_states22:20:210
73599911429,16cyclictest8455-21latency_hist21:20:000
73599911423,15cyclictest946-21ntpd20:05:200
73599911422,19cyclictest20822-21mailstats20:00:280
2730321140,3chrt27307-21swap20:25:260
1127521140,4chrt11271-21cat19:25:010
870921130,3sleep08706-21cat19:15:010
73599911329,12cyclictest29394-21runrttasks20:35:080
73599911327,15cyclictest9459-21runrttasks19:16:250
73599911326,16cyclictest11220-21runrttasks21:30:140
73599911326,13cyclictest5131-21mailstats21:05:250
73599911312,17cyclictest18078-21ntp_states19:50:240
7359991128,29cyclictest3231-21munin-node23:05:090
7359991127,17cyclictest15273-21df19:40:140
73599911227,14cyclictest22325-21runrttasks00:18:570
73599911225,15cyclictest14935-21latency_hist21:45:010
73599911225,14cyclictest23499-21runrttasks22:16:330
73599911224,15cyclictest5213-21runrttasks23:11:130
73599911222,15cyclictest13634-21runrttasks19:33:500
73599911210,15cyclictest3461-21/usr/sbin/munin21:00:130
7359991117,27cyclictest25846-21seq20:20:220
73599911121,21cyclictest23073-21if_eth020:10:170
73599911012,18cyclictest28413-21ntp_states20:30:250
73599911010,19cyclictest32284-21ntp_states20:45:240
7359991099,19cyclictest10038-21wc23:30:250
73599910925,14cyclictest15650-21runrttasks21:45:330
73599910922,14cyclictest7320-21missed_timers23:20:210
73599910912,18cyclictest11254-21ntp_states23:35:220
73599910911,18cyclictest625-21/usr/sbin/munin22:55:310
73599910911,18cyclictest24082-21memory00:25:160
7359991089,17cyclictest30816-21ntp_states22:45:210
7359991089,17cyclictest25321-21irqstats00:30:170
7359991088,29cyclictest17409-21ls00:00:020
73599910820,15cyclictest546-21cut22:55:020
73599910812,17cyclictest21671-21memory22:10:170
73599910810,17cyclictest2224-21ntpq23:00:210
73599910810,17cyclictest10172-21ntp_states21:25:240
7359991078,27cyclictest17725-21ntp_states00:00:220
7359991078,13cyclictest13960-21df19:35:120
73599910711,20cyclictest19713-21sshd00:08:380
7359991067,13cyclictest276-21runrttasks00:10:280
73599910625,15cyclictest15722-21runrttasks23:52:440
73599910522,12cyclictest2370-21ntpq20:55:190
73599910510,23cyclictest12609-21pluginstate23:40:230
73599910421,13cyclictest27119-21cut22:30:270
73599910411,21cyclictest20203-21/usr/sbin/munin22:05:200
73599910320,14cyclictest23005-21processes00:20:260
73599910211,17cyclictest8659-21df_inode21:20:140
731127620,31sleep07338-21munin-run19:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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