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2026-09-06 - 21:27

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 the 100 highest latencies:
System rack5slot7s.osadl.org (updated Sun Sep 06, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24535224582197,98sleep00-21swapper07:08:330
247409916416,123cyclictest13040-21apt-get09:20:340
247409916216,41cyclictest2654-21/usr/sbin/munin11:31:070
247409916213,119cyclictest3558-21cron11:40:010
247409916119,118cyclictest3874-21irqstats11:40:410
247409915915,102cyclictest7219-21munin-run12:00:020
247409915815,118cyclictest22856-21users10:16:070
247409915715,120cyclictest955-21apt-get11:26:140
247409915715,116cyclictest4328-21/usr/sbin/munin08:25:500
247409915710,121cyclictest25548-21sshd07:15:080
247409915633,101cyclictest26115-21grep10:36:030
247409915518,24cyclictest4393-21apt-get11:46:130
247409915432,43cyclictest26645-21ntp_kernel_err07:20:550
247409915416,39cyclictest21778-21/usr/sbin/munin10:10:550
247409915413,39cyclictest13116-21latency_hist09:20:080
247409915411,119cyclictest6210-21sshd11:52:070
247409915317,96cyclictest31651-21timerandwakeup11:11:000
247409915317,108cyclictest8928-21apt-get12:10:180
247409915314,22cyclictest29380-21munin-run11:00:020
247409915314,115cyclictest7276-21grep08:41:010
247409915312,27cyclictest5734-21sed08:31:010
247409915312,121cyclictest15675-21modprobe09:35:010
247409915311,116cyclictest1650-21awk08:05:590
247409915236,22cyclictest31953-21/usr/sbin/munin07:55:560
247409915219,94cyclictest25544-21munin-node07:15:140
247409915216,96cyclictest28578-21munin-run10:55:020
247409915216,113cyclictest20712-21df10:05:270
247409915214,25cyclictest30991-21munin-run11:10:010
247409915212,116cyclictest19276-21grep09:55:480
247409915140,91cyclictest4302-21latency_hist08:25:050
247409915120,28cyclictest16610-21apt-get09:40:210
247409915113,116cyclictest29163-21grep07:35:560
247409915111,116cyclictest678-21grep11:20:570
247409915018,31cyclictest24913-21memory10:30:440
247409915018,25cyclictest17406-21apt-get09:45:200
247409915018,107cyclictest10557-21apt-get12:20:200
247409915016,26cyclictest29502-21apt-get11:00:180
247409915014,109cyclictest7534-21/usr/sbin/munin08:45:350
247409915013,39cyclictest3114-21awk08:15:540
247409914936,91cyclictest32577-21cron11:20:020
247409914931,23cyclictest30816-21mailstats07:45:580
247409914919,27cyclictest23938-21diskstats10:25:310
247409914916,24cyclictest11396-21users09:06:060
247409914915,108cyclictest7338-21/usr/sbin/munin12:00:550
247409914911,22cyclictest12142-21/usr/sbin/munin12:30:460
247409914819,29cyclictest27090-21apt-get10:45:200
247409914815,26cyclictest9963-21memory12:15:430
247409914814,19cyclictest11352-21apt-get12:25:170
247409914814,112cyclictest13186-21memory12:35:470
247409914814,111cyclictest16488-21munin-run09:40:020
247409914812,37cyclictest9743-21grep08:56:050
247409914811,114cyclictest8380-21wc12:05:460
247409914811,112cyclictest8897-21timerwakeupswit08:51:000
247409914726,21cyclictest0-21swapper07:25:570
247409914721,99cyclictest310-21apt-get08:00:210
247409914721,99cyclictest28607-21users07:31:030
247409914718,29cyclictest6574-21users08:36:080
247409914711,26cyclictest2431-21grep08:11:000
247409914710,24cyclictest14563-21grep09:25:580
247409914619,27cyclictest26400-21df_inode10:40:310
247409914614,107cyclictest10054-21df_inode09:00:290
247409914610,101cyclictest30263-21munin-plugin-st07:45:010
247409914514,26cyclictest31157-21/usr/sbin/munin07:51:030
247409914512,22cyclictest12082-21wc09:11:040
247409914419,24cyclictest18892-21munin-run09:55:010
247409914417,21cyclictest23207-21irqstats10:20:390
247409914412,26cyclictest20010-21cut10:00:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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