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2025-11-17 - 04:12

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 Mon Nov 17, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12551224542195,95sleep00-21swapper19:08:100
128039916113,48cyclictest25929-21head20:26:050
128039916012,42cyclictest24457-21grep20:20:060
128039915814,25cyclictest22162-21apt-get23:22:000
128039915716,116cyclictest22328-21memory20:05:480
128039915614,119cyclictest996-21apt-get21:15:380
128039915519,30cyclictest4072-21ntp_states21:30:520
128039915416,26cyclictest26499-21apt-get23:50:190
128039915414,41cyclictest16150-21cut19:25:580
128039915318,111cyclictest14185-21wc22:35:040
128039915315,99cyclictest31632-21munin-run21:05:040
128039915232,22cyclictest28910-21/usr/sbin/munin00:05:550
128039915217,112cyclictest31630-21apt-get21:06:020
128039915214,99cyclictest18393-21grep19:40:540
128039915212,113cyclictest3065-21df_inode21:25:310
128039915130,100cyclictest0-21swapper22:50:500
128039915117,24cyclictest24742-21users23:36:080
128039915116,23cyclictest21343-21munin-run23:20:030
128039915114,114cyclictest12532-21grep22:25:030
128039915114,112cyclictest25208-21munin-run20:25:010
128039915113,25cyclictest620-21ntpq21:11:010
128039915111,116cyclictest14489-21ntp_kernel_err22:35:490
128039915110,41cyclictest11755-21wc22:20:040
128039915018,25cyclictest24906-21apt-get23:40:210
128039915016,29cyclictest18558-21ntp_states23:00:530
128039915016,22cyclictest22992-21diskstats20:10:330
128039915014,24cyclictest21921-21head20:01:090
128039915010,23cyclictest29612-21grep20:50:480
12803991499,25cyclictest6380-21grep21:45:430
12803991499,25cyclictest16550-21expr19:30:270
12803991499,118cyclictest31870-21sort00:21:040
128039914929,19cyclictest18124-21munin-run23:00:010
128039914929,101cyclictest0-21swapper22:46:020
128039914920,26cyclictest32241-21df00:25:270
128039914920,20cyclictest28279-21/usr/sbin/munin00:00:370
128039914917,23cyclictest2406-21memory21:20:540
128039914916,25cyclictest7141-21irqstats21:50:410
128039914910,24cyclictest17960-21systemctl19:40:020
128039914910,117cyclictest1883-21sed00:36:050
128039914822,26cyclictest112-21systemd-journal21:41:490
128039914817,108cyclictest27011-21diskstats20:35:350
128039914817,103cyclictest30117-21apt-get20:55:170
128039914815,33cyclictest15130-21df22:40:260
128039914813,22cyclictest30793-21grep00:15:490
128039914813,113cyclictest22490-21/usr/sbin/munin23:25:570
128039914811,114cyclictest19332-21cut19:45:590
128039914810,116cyclictest30455-21wc00:15:030
128039914810,114cyclictest19831-21/usr/sbin/munin23:10:500
128039914719,29cyclictest23457-21irqstats23:30:430
128039914716,23cyclictest9486-21df22:05:290
128039914714,22cyclictest14031-21apt-get19:15:350
128039914714,110cyclictest112-21systemd-journal23:46:480
128039914713,24cyclictest20468-21/usr/sbin/munin19:55:490
128039914711,27cyclictest14866-21/usr/sbin/munin19:20:360
128039914627,21cyclictest0-21swapper22:25:220
128039914626,97cyclictest0-21swapper21:36:010
128039914619,99cyclictest28520-21apt-get20:45:220
128039914617,28cyclictest717-21memory00:30:500
128039914615,23cyclictest26760-21users20:31:090
128039914615,20cyclictest28000-21munin-run00:00:020
128039914612,111cyclictest8665-21wc22:00:270
128039914611,27cyclictest7761-21apt-get21:55:250
128039914610,112cyclictest13327-21find19:10:590
128039914514,24cyclictest10374-21cut22:10:430
128039914512,92cyclictest19655-21sed23:06:070
128039914510,112cyclictest19944-21sed19:50:470
128039914216,22cyclictest27725-21apt-get20:40:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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