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2026-08-30 - 21:21

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 Sun Aug 30, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11353224492202,87sleep00-21swapper07:08:560
115189915918,113cyclictest27225-21apt-get08:45:170
115189915916,24cyclictest27916-21apt-get08:51:290
115189915911,24cyclictest20795-21apt-get08:05:150
115189915818,114cyclictest17070-21munin-run11:00:020
115189915816,112cyclictest17190-21apt-get11:00:200
115189915812,121cyclictest17552-21cat07:45:040
115189915738,21cyclictest22553-21timerandwakeup11:31:030
115189915714,121cyclictest11674-21df_inode10:25:300
115189915617,24cyclictest3987-21munin-run09:40:030
115189915617,109cyclictest24672-21users08:26:070
115189915612,27cyclictest26293-21modprobe08:40:010
115189915519,113cyclictest7197-21munin-run10:00:030
115189915511,119cyclictest32193-21apt-get09:16:490
115189915417,23cyclictest13460-21munin-run07:20:010
115189915321,26cyclictest29072-21users12:11:050
115189915319,111cyclictest29110-21apt-get12:16:250
115189915317,26cyclictest16665-21apt07:40:020
115189915317,115cyclictest905-21munin-run12:40:070
115189915314,115cyclictest30668-21grep09:05:230
115189915313,24cyclictest26117-21diskstats11:55:310
115189915311,44cyclictest19391-21head11:11:030
115189915311,118cyclictest15412-21grep10:46:030
115189915214,29cyclictest26939-21diskstats12:00:350
115189915213,95cyclictest24810-21apt-get08:30:150
115189915213,25cyclictest8217-21/usr/sbin/munin10:05:270
115189915213,117cyclictest8805-21apt-get10:10:370
115189915213,113cyclictest18396-21/usr/sbin/munin11:05:540
115189915126,20cyclictest9553-21kworker/u2:1210:15:130
115189915121,104cyclictest17590-21apt-get07:45:220
115189915118,23cyclictest14481-21df07:25:290
115189915115,112cyclictest15869-21munin-run07:35:020
115189915114,23cyclictest29148-21df_inode08:55:360
115189915113,116cyclictest18493-21diskstats07:50:290
115189915110,117cyclictest16261-21modprobe10:55:000
115189915028,21cyclictest0-21swapper08:40:540
115189915017,25cyclictest1140-21memory09:20:550
115189915015,25cyclictest21202-21apt-get11:25:190
115189915015,21cyclictest13153-21/usr/sbin/munin10:36:090
115189915013,22cyclictest23492-21latency_hist11:40:020
115189915011,115cyclictest3036-21sort09:31:020
115189915010,26cyclictest11615-21apt-get07:10:140
115189914934,22cyclictest31361-21grep12:25:490
115189914927,99cyclictest19572-21/usr/sbin/munin11:16:000
115189914915,30cyclictest31509-21cat09:10:240
115189914915,112cyclictest23725-21df_inode11:40:280
115189914914,23cyclictest24667-21sort11:45:460
115189914912,113cyclictest13980-21apt-get10:40:140
115189914911,26cyclictest20843-21mailstats11:20:560
11518991489,117cyclictest23938-21cat08:25:050
11518991489,114cyclictest20425-21fgrep08:00:570
115189914813,20cyclictest1695-21apt-get09:25:180
115189914813,20cyclictest12920-21cat10:31:020
115189914811,24cyclictest13844-21wc07:20:460
115189914811,113cyclictest19706-21switchtime07:56:000
115189914810,24cyclictest22964-21ls08:16:010
115189914715,109cyclictest11086-21/usr/sbin/munin10:20:530
115189914715,108cyclictest22244-21users08:11:040
115189914713,110cyclictest7846-21switchtime10:01:000
115189914711,95cyclictest30292-21wc09:00:550
115189914711,109cyclictest31860-21/usr/sbin/munin12:30:390
11518991468,113cyclictest248-21rs:main0
115189914628,20cyclictest5578-21sshd09:47:150
115189914616,24cyclictest25209-21apt-get11:50:180
115189914612,24cyclictest5768-21wc09:50:220
115189914610,26cyclictest30734-21cut12:21:030
115189914514,22cyclictest28277-21users12:06:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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