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2026-04-15 - 23:23

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 Wed Apr 15, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8908224372193,98sleep00-21swapper07:08:260
91289916311,127cyclictest9817-21apt-get10:31:370
91289916216,24cyclictest26540-21df_inode12:10:290
91289916116,121cyclictest9935-21munin-node07:15:040
91289916033,23cyclictest24226-21cat11:55:490
91289915917,117cyclictest16220-21apt-get07:50:130
91289915818,115cyclictest15218-21memory11:00:440
91289915814,118cyclictest23766-21apt-get11:52:040
91289915811,24cyclictest6366-21apt-get10:11:380
91289915717,112cyclictest10953-21apt-get10:35:260
91289915714,41cyclictest30908-21cut12:35:580
91289915616,25cyclictest21278-21apt11:40:010
91289915616,115cyclictest5856-21uname10:05:390
91289915614,119cyclictest12087-21df07:25:240
91289915613,23cyclictest27989-21tr09:00:460
91289915417,113cyclictest26327-21munin-run12:10:010
91289915416,115cyclictest8808-21cut10:20:560
91289915415,116cyclictest13474-21apt-get07:36:160
91289915414,28cyclictest1552-21modprobe09:40:020
91289915413,119cyclictest18498-21users08:01:070
91289915411,118cyclictest28641-21sort12:21:010
91289915410,27cyclictest16101-21sshd07:49:120
91289915316,94cyclictest22948-21sshd11:50:080
91289915316,26cyclictest11189-21/usr/sbin/munin07:20:420
91289915316,22cyclictest18703-21apt-get08:05:280
91289915216,110cyclictest30800-21munin-run09:20:020
91289915214,31cyclictest28798-21ntpq09:05:480
91289915213,113cyclictest20454-21/usr/sbin/munin08:15:550
91289915134,94cyclictest1668-21munin-node09:40:100
91289915122,19cyclictest9811-21modprobe10:30:000
91289915115,21cyclictest5549-21sshd10:01:120
91289915112,114cyclictest3257-21/usr/sbin/munin09:50:110
91289915111,41cyclictest19837-21uname08:10:480
91289915021,101cyclictest27226-21apt-get12:15:220
91289915018,27cyclictest30918-21/usr/sbin/munin09:21:070
91289915017,104cyclictest24838-21/usr/sbin/munin12:01:080
91289915016,91cyclictest12783-21apt-get07:30:160
91289915015,108cyclictest4058-21apt-get09:55:170
91289915011,30cyclictest11072-21systemctl07:20:020
91289915010,119cyclictest306-21wc09:30:450
91289914937,18cyclictest0-21swapper07:40:480
91289914918,105cyclictest18196-21apt-get11:20:110
91289914917,24cyclictest31824-21df_inode09:25:290
91289914916,24cyclictest18075-21munin-run11:20:020
91289914916,24cyclictest17720-21munin-run08:00:030
91289914915,28cyclictest7490-21/usr/sbin/munin10:15:530
91289914911,113cyclictest22290-21grep08:25:410
9128991489,117cyclictest20408-21unixbench_singl11:31:020
91289914816,23cyclictest3159-21munin-run09:50:020
91289914815,25cyclictest16570-21apt-get11:10:170
91289914813,48cyclictest13066-21/usr/sbin/munin10:46:000
91289914813,23cyclictest24016-21awk08:35:510
91289914812,111cyclictest14924-21wc11:00:050
91289914810,26cyclictest25495-21cat08:45:400
91289914810,22cyclictest29989-21munin-run09:15:020
91289914720,101cyclictest24602-21df_inode08:40:310
91289914718,106cyclictest19090-21df11:25:250
91289914711,111cyclictest29647-21/usr/sbin/munin12:30:470
91289914614,26cyclictest28958-21df12:25:270
91289914614,106cyclictest22876-21/usr/sbin/munin08:30:240
91289914613,26cyclictest21973-21modprobe08:25:000
91289914610,25cyclictest16209-21awk11:05:560
9128991459,115cyclictest27653-21cat09:00:070
91289914516,24cyclictest11874-21df10:40:260
91289914513,37cyclictest21405-21/usr/sbin/munin11:40:360
91289914417,25cyclictest13820-21mailstats10:50:570
91289914315,24cyclictest26194-21df_inode08:50:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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