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2026-06-01 - 01:50

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 Sun May 31, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13316224422210,87sleep00-21swapper07:09:200
134369915912,123cyclictest4028-21apt-get09:31:020
134369915912,121cyclictest31827-21apt-get12:21:010
134369915911,124cyclictest7448-21sshd09:46:330
134369915821,27cyclictest21365-21diskstats11:15:330
134369915732,22cyclictest2408-21modprobe09:20:020
134369915619,109cyclictest27768-21users11:51:060
134369915618,23cyclictest31659-21munin-run09:00:010
134369915614,118cyclictest25013-21apt-get08:21:350
134369915518,114cyclictest24371-21apt-get11:36:580
134369915515,25cyclictest23577-21munin-plugin-st11:30:000
134369915419,29cyclictest31436-21ntp_states12:15:510
134369915418,25cyclictest9283-21df10:00:250
134369915416,114cyclictest24480-21irqstats08:15:420
134369915415,21cyclictest1599-21modprobe09:15:000
134369915414,116cyclictest15302-21cut10:35:580
134369915410,115cyclictest10676-21munin-run10:10:010
134369915320,29cyclictest20303-21apt-get07:50:210
134369915318,112cyclictest28682-21diskstats08:40:350
134369915315,115cyclictest27063-21diskstats08:30:350
134369915313,24cyclictest12784-21systemd-journal08:39:350
134369915313,117cyclictest14286-21memory10:30:450
134369915312,116cyclictest28277-21wc11:55:530
13436991528,122cyclictest12784-21systemd-journal10:15:000
134369915220,27cyclictest18748-21munin-run11:00:020
134369915217,37cyclictest13642-21diskstats07:10:340
134369915217,24cyclictest23780-21df_inode11:30:290
134369915216,112cyclictest21754-21users07:56:070
134369915215,113cyclictest419-21apt-get12:25:450
134369915214,114cyclictest3461-21sshd09:25:350
134369915212,114cyclictest19564-21pluginstate11:05:030
134369915210,118cyclictest5843-21cron09:40:000
134369915138,93cyclictest8063-21/usr/sbin/munin09:50:580
134369915116,24cyclictest13907-21users10:26:060
134369915116,22cyclictest15377-21munin-run07:20:020
134369915115,113cyclictest16295-21apt-get07:25:180
134369915115,112cyclictest30161-21apt-get08:50:190
134369915114,113cyclictest11715-21df10:15:270
134369915040,22cyclictest644-21switchtime09:06:000
134369915021,25cyclictest21921-21apt-get08:00:170
134369915019,103cyclictest2540-21apt-get09:20:170
134369915018,106cyclictest30323-21apt-get12:10:160
134369915017,24cyclictest19617-21diskstats07:45:360
134369915017,23cyclictest17887-21apt-get07:35:140
134369915016,109cyclictest29637-21diskstats12:05:340
134369915014,112cyclictest26627-21awk08:26:060
134369915010,115cyclictest32326-21grep09:01:010
134369914920,24cyclictest29368-21apt-get08:45:130
134369914919,105cyclictest19664-21apt-get11:05:170
134369914917,25cyclictest17264-21irqstats07:30:390
134369914916,25cyclictest28729-21apt-get12:00:160
134369914817,107cyclictest2422-21df_inode12:35:290
134369914816,24cyclictest15494-21/usr/sbin/munin07:20:110
134369914812,24cyclictest2098-21grep12:31:060
134369914810,116cyclictest17075-21grep10:46:020
134369914716,23cyclictest22822-21df_inode08:05:300
134369914619,27cyclictest23511-21apt-get08:10:200
134369914616,24cyclictest12552-21df_inode10:20:270
134369914616,23cyclictest17347-21df10:50:250
134369914611,115cyclictest25527-21apt-get11:40:170
134369914610,24cyclictest22782-21modprobe11:25:020
134369914519,24cyclictest6080-21df09:40:260
134369914518,23cyclictest20699-21memory11:10:430
134369914510,30cyclictest8493-21/usr/sbin/munin09:55:340
134369914418,24cyclictest26418-21df11:45:270
134369914415,25cyclictest15836-21irqstats10:40:410
134369914415,106cyclictest18819-21df_inode07:40:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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