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2026-05-26 - 14:14

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Tue May 26, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13794224382198,94sleep00-21swapper07:09:240
139049917013,133cyclictest21154-21sort11:06:010
139049916318,120cyclictest25457-21memory08:16:190
139049916218,26cyclictest5077-21/usr/sbin/munin09:30:530
139049916113,123cyclictest25869-21tr11:36:270
139049915918,118cyclictest21369-21apt-get11:10:190
139049915835,99cyclictest22983-21sort11:20:070
139049915814,122cyclictest14713-21munin-node07:15:060
139049915812,102cyclictest15503-21grep07:16:120
139049915811,123cyclictest2589-21wc12:30:530
139049915742,21cyclictest14644-21latency_hist10:30:040
139049915719,110cyclictest29872-21apt-get12:00:190
139049915622,28cyclictest22943-21ntp_states08:00:510
139049915614,119cyclictest17033-21apt-get10:46:360
139049915612,37cyclictest29740-21modprobe12:00:010
139049915414,116cyclictest29303-21apt-get08:40:320
139049915410,118cyclictest17869-21wc07:30:230
139049915333,23cyclictest12275-21latency_hist10:15:050
139049915316,38cyclictest16016-21apt-get07:20:270
139049915315,24cyclictest20473-21apt11:05:010
139049915312,49cyclictest27091-21users11:41:130
139049915312,118cyclictest16219-21munin-run10:40:010
139049915311,122cyclictest28090-21apt-get11:50:190
139049915310,25cyclictest12784-21systemd-journal12:40:010
139049915215,28cyclictest2006-21if_eth009:10:360
139049915142,87cyclictest24419-21unixbench_singl11:26:020
139049915117,28cyclictest23531-21df_inode08:05:320
139049915116,25cyclictest22505-21munin-run08:00:030
139049915116,23cyclictest1540-21diskstats12:25:300
139049915113,114cyclictest6578-21modprobe09:40:000
139049915112,115cyclictest28462-21apt-get08:35:190
139049915110,24cyclictest28354-21modprobe08:35:000
139049915110,118cyclictest7597-21df_inode09:45:270
139049915042,85cyclictest895-21unixbench_singl09:01:040
139049915042,85cyclictest18357-21kernelversion10:50:480
139049915035,21cyclictest12784-21systemd-journal10:22:170
139049915021,102cyclictest633-21apt-get12:20:210
139049915019,25cyclictest4414-21/usr/sbin/munin09:25:360
139049915018,22cyclictest513-21munin-run12:20:010
139049915017,25cyclictest10703-21apt-get10:05:170
139049915017,109cyclictest21702-21munin-run07:55:020
139049915015,21cyclictest31461-21apt-get12:10:190
139049915015,112cyclictest25282-21apt-get11:35:040
139049915014,112cyclictest24393-21/usr/sbin/munin08:10:410
139049915012,111cyclictest2654-21/usr/sbin/munin09:15:360
139049915010,26cyclictest17033-21sh10:45:010
139049915010,116cyclictest20639-21find07:45:580
139049914928,98cyclictest12784-21systemd-journal09:40:070
139049914919,29cyclictest30968-21users08:46:130
139049914919,27cyclictest26872-21apt-get08:25:210
139049914916,109cyclictest19296-21readlink07:40:020
139049914916,107cyclictest18956-21apt-get10:55:160
139049914915,109cyclictest27227-21/usr/sbin/munin11:45:260
139049914913,27cyclictest31900-21/usr/sbin/munin08:55:290
139049914912,96cyclictest26725-21sed08:21:080
139049914910,24cyclictest10598-21sh10:05:010
13904991488,42cyclictest13109-21grep10:20:070
139049914816,21cyclictest31108-21apt-get08:50:140
139049914814,26cyclictest23693-21munin-run11:25:000
139049914812,112cyclictest1194-21/usr/sbin/munin09:05:350
139049914716,105cyclictest14721-21apt-get10:30:170
139049914712,110cyclictest20104-21cron07:45:010
139049914710,26cyclictest9140-21/usr/sbin/munin09:55:220
139049914619,25cyclictest17106-21df_inode07:25:350
139049914613,21cyclictest8492-21cat09:50:410
139049914518,25cyclictest4146-21users09:21:050
139049914510,109cyclictest30663-21/usr/sbin/munin12:06:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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