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2026-03-06 - 22:49

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 highest latencies:
System rack5slot7s.osadl.org (updated Fri Mar 06, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3910224252164,58sleep00-21swapper07:05:380
50039916217,105cyclictest17020-21munin-run08:20:030
50039916117,24cyclictest11273-21memory11:00:440
50039916117,119cyclictest24136-21/usr/sbin/munin12:21:010
50039916016,119cyclictest20718-21apt-get12:00:250
50039915919,113cyclictest1173-21apt-get10:00:220
50039915820,114cyclictest27225-21munin-run12:40:020
50039915820,111cyclictest14931-21memory08:06:190
50039915737,100cyclictest19296-21timerandwakeup08:31:020
50039915716,99cyclictest19589-21apt-get08:35:260
50039915617,22cyclictest32473-21apt-get09:57:010
50039915613,117cyclictest6230-21cat10:30:470
50039915612,118cyclictest5167-21/usr/sbin/munin07:11:460
50039915514,117cyclictest6136-21munin-node10:45:110
50039915513,24cyclictest18188-21munin-run11:45:000
50039915416,113cyclictest28817-21memory09:30:450
50039915413,25cyclictest13302-21find07:55:550
50039915411,99cyclictest32581-21dpkg09:55:090
50039915411,27cyclictest10364-21modprobe07:40:020
50039915411,117cyclictest15493-21processes11:25:540
50039915410,26cyclictest26348-21grep12:31:040
50039915410,119cyclictest5790-21snmpd10:45:010
50039915334,99cyclictest110-21systemd-journal07:23:440
50039915328,21cyclictest19181-21df11:50:230
50039915316,110cyclictest3603-21/usr/sbin/munin10:15:200
50039915315,114cyclictest21894-21irqstats12:05:450
50039915314,114cyclictest110-21systemd-journal09:20:010
50039915313,25cyclictest14289-21/usr/sbin/munin11:20:220
5003991529,24cyclictest22798-21head08:51:020
50039915221,27cyclictest23879-21df09:00:270
50039915218,24cyclictest20578-21munin-run12:00:020
50039915218,107cyclictest25041-21diskstats12:25:340
50039915214,97cyclictest24810-21memory09:05:460
50039915214,23cyclictest12320-21memory07:50:440
50039915212,24cyclictest7013-21memory10:35:440
50039915212,117cyclictest23723-21zcat12:15:540
50039915211,24cyclictest9832-21grep10:51:040
50039915211,23cyclictest23206-21sort08:55:440
5003991518,118cyclictest14172-21munin-run11:20:010
50039915118,109cyclictest28438-21users09:26:060
50039915113,114cyclictest17313-21irqstats08:20:380
50039915112,41cyclictest25363-21/usr/sbin/munin09:10:550
50039915112,113cyclictest13319-21apt-config11:11:450
50039915017,29cyclictest6462-21apt-get07:15:400
50039914971,55cyclictest20886-21grep08:40:550
50039914935,93cyclictest11358-21cstates07:45:240
50039914916,25cyclictest11827-21apt-get11:05:120
50039914915,111cyclictest15830-21ntp_states08:10:570
50039914914,26cyclictest16771-21df11:35:240
50039914913,114cyclictest10381-21irqstats10:55:390
50039914912,36cyclictest5790-21snmpd07:40:140
50039914911,114cyclictest5547-21grep10:25:540
5003991489,23cyclictest13935-21memory08:00:440
5003991489,116cyclictest21834-21awk08:45:590
5003991489,112cyclictest30984-21/usr/sbin/munin09:45:420
50039914816,27cyclictest18395-21df_inode11:45:310
50039914815,35cyclictest27089-21df09:20:250
50039914815,110cyclictest2658-21munin-run10:10:020
50039914812,24cyclictest18380-21mailstats08:25:560
50039914811,28cyclictest23199-21modprobe12:15:010
50039914711,112cyclictest2977-21grep10:10:400
50039914710,113cyclictest4751-21ps10:20:540
50039914710,111cyclictest9117-21memory07:30:450
5003991468,26cyclictest8082-21/usr/sbin/munin07:25:350
50039914615,26cyclictest29368-21/usr/sbin/munin09:35:440
50039914610,38cyclictest30270-21wc09:40:240
50039914511,110cyclictest5790-21snmpd11:30:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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