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2026-05-15 - 07:43

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 Fri May 15, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25755224442198,95sleep00-21swapper19:08:300
259689916211,124cyclictest27195-21/usr/sbin/munin19:16:270
259689916017,118cyclictest32196-21munin-run23:00:020
259689916015,122cyclictest1995-21apt-get20:00:130
259689915915,101cyclictest8664-21apt-config20:40:120
259689915817,118cyclictest17031-21apt-get21:30:570
259689915714,118cyclictest29514-21apt-get22:45:240
259689915710,124cyclictest5407-21sshd20:20:320
259689915611,120cyclictest13586-21modprobe21:10:020
259689915522,30cyclictest32424-21diskstats23:00:400
259689915514,117cyclictest10648-21irqstats20:50:390
259689915511,122cyclictest26528-21cut19:10:560
259689915511,121cyclictest3994-21processes20:10:540
259689915421,29cyclictest27133-21diskstats22:30:320
259689915418,112cyclictest22042-21munin-run22:00:020
259689915415,25cyclictest15804-21cut21:20:590
259689915412,40cyclictest6278-21/usr/sbin/munin23:40:120
259689915320,107cyclictest27820-21apt-get22:35:180
259689915318,25cyclictest5096-21munin-run20:20:030
259689915317,111cyclictest23006-21apt-get22:05:200
259689915316,114cyclictest31121-21munin-run19:40:040
259689915315,23cyclictest5553-21expr23:35:240
259689915312,39cyclictest18949-21/usr/sbin/munin21:40:100
259689915312,24cyclictest3799-21sort23:25:040
259689915310,121cyclictest32579-21grep19:46:010
259689915216,26cyclictest7246-21irqstats23:45:380
259689915215,95cyclictest9489-21apt-get00:00:100
259689915213,117cyclictest14253-21sort21:11:030
259689915115,34cyclictest1019-21sshd23:05:540
259689915115,113cyclictest26922-21munin-run22:30:010
259689915113,39cyclictest20386-21grep21:46:040
259689915113,112cyclictest7036-21/usr/sbin/munin20:30:390
259689915111,26cyclictest7831-21/usr/sbin/munin20:35:350
259689915040,21cyclictest26049-21awk22:21:000
259689915032,94cyclictest29540-21latency_hist19:30:030
259689915015,110cyclictest12784-21systemd-journal21:20:010
259689915013,113cyclictest28757-21wc19:25:040
259689915013,113cyclictest12790-21munin-run21:05:000
259689915011,97cyclictest31984-21grep19:45:040
259689915011,113cyclictest12508-21unixbench_singl00:16:030
259689915010,38cyclictest14998-21apt-get00:36:350
25968991498,117cyclictest18901-21sort21:40:050
259689914935,22cyclictest21068-21switchtime21:51:010
259689914921,28cyclictest30577-21diskstats22:50:400
259689914916,24cyclictest9923-21memory20:45:520
259689914916,111cyclictest5318-21users23:31:070
259689914915,50cyclictest8904-21memory23:55:450
259689914915,111cyclictest16485-21irqstats21:26:140
259689914913,23cyclictest29335-21latency_hist22:45:010
259689914912,25cyclictest3344-21sort20:06:030
259689914912,22cyclictest15079-21sort00:35:080
259689914910,118cyclictest24224-21sendmail_mailqu22:10:560
259689914816,25cyclictest11382-21diskstats20:55:340
259689914815,24cyclictest6353-21df_inode20:25:360
259689914815,24cyclictest20042-21snmpd23:18:500
259689914814,114cyclictest10655-21wc00:05:560
259689914812,39cyclictest741-21ps19:50:530
259689914737,90cyclictest24963-21proc_pri22:15:530
259689914720,99cyclictest1444-21apt-get23:10:220
259689914716,26cyclictest30083-21mailstats19:30:570
259689914712,48cyclictest13358-21grep00:21:030
259689914613,89cyclictest22162-21apt-get22:00:180
259689914519,101cyclictest11192-21diskstats00:10:340
259689914515,104cyclictest8108-21memory23:50:430
259689914512,96cyclictest1591-21grep19:55:550
259689914415,22cyclictest3978-21diskstats23:25:340
259689914313,29cyclictest14205-21munin-run00:30:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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