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2025-12-20 - 06:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack5slot7s.osadl.org (updated Sat Dec 20, 2025 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1014212680,6sleep029-1kworker/u3:017:56:060
95229916413,126cyclictest27729-21users00:16:030
95229916221,113cyclictest13170-21apt-get19:30:210
95229916212,123cyclictest2825-21/usr/sbin/munin21:46:000
95229915820,107cyclictest24695-21apt-get00:00:210
95229915816,117cyclictest20369-21apt-get20:15:140
95229915813,118cyclictest13317-21cstates22:50:220
95229915812,117cyclictest26224-21/usr/sbin/munin20:50:520
95229915742,24cyclictest21906-21processes23:40:560
95229915715,26cyclictest30393-21irqstats21:15:520
95229915613,108cyclictest9245-21kworker/u2:222:25:150
95229915518,96cyclictest11895-21memory22:40:520
95229915518,114cyclictest1674-21apt-get21:41:250
95229915514,118cyclictest12447-21apt-get22:45:180
95229915514,114cyclictest28151-21ntp_states21:00:500
95229915510,119cyclictest11258-21find22:35:570
95229915418,28cyclictest23584-21apt-get20:35:220
95229915414,40cyclictest14114-21apt-get22:55:280
95229915412,99cyclictest17866-21munin-run20:00:020
95229915411,103cyclictest7688-21cstates22:15:230
95229915410,40cyclictest30537-21missed_timers00:35:450
95229915332,22cyclictest25167-21latency_hist20:45:080
95229915317,112cyclictest24569-21apt00:00:010
95229915316,23cyclictest10327-21munin-node19:15:050
95229915314,23cyclictest20575-21munin-run23:35:010
95229915220,25cyclictest11690-21diskstats19:20:300
95229915219,28cyclictest5234-21apt-get22:00:160
95229915216,25cyclictest6682-21users22:06:030
95229915215,111cyclictest25505-21df_inode20:45:510
95229915214,115cyclictest15598-21sort23:01:080
95229915212,24cyclictest28947-21ntp_states21:05:510
95229915211,43cyclictest14663-21munin-plugin-st19:40:010
95229915117,26cyclictest18168-21apt23:20:010
95229915113,97cyclictest27020-21grep00:15:040
95229915110,117cyclictest803-21head21:31:030
9522991509,117cyclictest289-21snmpd22:15:010
95229915018,106cyclictest25599-21diskstats00:05:350
95229915013,114cyclictest1679-21/usr/sbin/munin21:40:070
95229915011,113cyclictest19289-21grep20:06:000
9522991499,25cyclictest11463-21systemctl19:20:010
95229914973,53cyclictest30120-21munin-run21:15:010
95229914920,103cyclictest21314-21diskstats20:20:350
95229914918,24cyclictest8685-21memory22:20:420
95229914917,25cyclictest21376-21munin-run23:40:030
95229914915,28cyclictest31049-21/usr/sbin/munin21:20:450
95229914913,111cyclictest18608-21grep20:01:030
95229914834,22cyclictest10354-21ntpq22:30:510
95229914821,26cyclictest15579-21apt-get19:45:220
95229914812,24cyclictest3933-21ntp_states21:50:510
95229914812,112cyclictest289-21snmpd20:25:510
95229914810,113cyclictest5059-21sed21:56:020
9522991479,96cyclictest16632-21grep19:50:450
9522991479,114cyclictest20211-21grep20:11:030
95229914774,50cyclictest32527-21sshd21:30:010
95229914716,28cyclictest12549-21irqstats19:25:440
95229914710,23cyclictest29381-21cron00:30:010
95229914617,24cyclictest27908-21apt-get00:20:220
95229914615,25cyclictest27016-21/usr/sbin/munin20:55:430
95229914614,24cyclictest22716-21find23:45:570
9522991458,113cyclictest18861-21sort23:21:000
95229914513,107cyclictest22915-21fw_packets20:30:360
95229914512,24cyclictest10421-21munin-node23:25:120
95229914415,25cyclictest29599-21/usr/sbin/munin00:30:290
95229914414,24cyclictest23413-21/usr/sbin/munin23:50:510
95229914413,109cyclictest14785-21apt-get19:40:200
95229914410,113cyclictest16668-21/usr/sbin/munin23:10:350
95229914327,94cyclictest0-21swapper23:05:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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