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2025-09-17 - 00:01

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 Tue Sep 16, 2025 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27771224432193,97sleep00-21swapper07:06:300
282109916717,107cyclictest11274-21apt-get08:37:000
282109916215,123cyclictest21169-21munin-run09:40:030
282109916116,121cyclictest8795-21apt-get08:25:270
282109916115,121cyclictest5940-21df11:25:260
282109916015,28cyclictest24497-21/usr/sbin/munin10:00:420
282109915814,120cyclictest12324-21wc08:45:040
282109915721,111cyclictest112-21systemd-journal09:28:250
282109915720,26cyclictest7439-21apt-get11:35:170
282109915717,24cyclictest25613-21diskstats10:06:030
282109915715,99cyclictest14809-21munin-run12:20:030
282109915715,117cyclictest6770-21apt-get08:15:580
282109915712,24cyclictest837-21head07:36:000
28210991569,24cyclictest27832-21apt-get10:21:500
282109915638,96cyclictest8989-21latency_hist11:45:040
282109915631,17cyclictest0-21swapper12:37:270
282109915616,114cyclictest15167-21/usr/sbin/munin12:20:430
282109915615,24cyclictest10454-21munin-run08:35:020
282109915615,101cyclictest4132-21munin-run08:00:030
282109915538,22cyclictest6916-21/usr/sbin/munin11:30:500
282109915531,20cyclictest11804-21df12:00:260
282109915515,116cyclictest11587-21munin-run12:00:020
282109915513,117cyclictest22983-21df_inode09:50:260
282109915511,58cyclictest10377-21sh11:51:330
282109915416,23cyclictest31284-21munin-run10:40:060
282109915413,100cyclictest20375-21cat09:35:030
28210991539,121cyclictest30009-21ls10:30:420
282109915316,24cyclictest1563-21apt-get10:55:140
282109915315,22cyclictest17911-21munin-run09:20:020
282109915315,114cyclictest30387-21diskstats07:20:320
282109915314,115cyclictest16301-21apt09:10:010
282109915221,104cyclictest23787-21diskstats09:55:330
282109915219,29cyclictest32672-21memory10:45:540
282109915215,114cyclictest9758-21/usr/sbin/munin11:50:040
282109915215,113cyclictest28589-21ntpq07:10:480
282109915215,112cyclictest5122-21apt-get08:05:180
282109915213,23cyclictest8631-21munin-run08:25:020
282109915211,117cyclictest31280-21apt-get10:40:350
282109915121,27cyclictest4252-21apt-get08:00:200
282109915112,25cyclictest16420-21munin-run12:30:010
282109915019,26cyclictest13300-21apt-get12:10:170
282109915017,107cyclictest17206-21modprobe12:35:010
282109915016,25cyclictest31169-21df07:25:240
282109915015,37cyclictest4715-21/usr/sbin/munin11:16:000
282109915011,114cyclictest6077-21apt-get08:10:190
28210991499,116cyclictest27014-21modprobe10:15:010
282109914919,29cyclictest12506-21diskstats08:45:340
282109914916,110cyclictest5741-21munin-run11:25:010
282109914916,107cyclictest863-21df10:50:260
282109914914,106cyclictest22087-21apt-get09:45:160
282109914913,21cyclictest21399-21df_inode09:40:330
282109914913,112cyclictest29635-21unixbench_singl10:26:130
282109914911,41cyclictest18217-21uname09:20:400
282109914911,117cyclictest27537-21zcat10:15:560
282109914833,94cyclictest30156-21munin-run07:20:020
282109914818,28cyclictest14097-21diskstats08:55:350
282109914815,106cyclictest3414-21/usr/sbin/munin11:11:010
282109914813,23cyclictest15493-21cron09:05:000
282109914811,22cyclictest32564-21apt07:35:010
28210991469,96cyclictest2684-21ls11:05:220
282109914612,24cyclictest13187-21/usr/sbin/munin08:50:380
282109914543,81cyclictest16936-21/usr/sbin/munin09:11:010
282109914529,18cyclictest0-21swapper07:50:460
282109914517,25cyclictest1140-21df_inode07:40:310
282109914515,21cyclictest2527-21apt07:50:000
282109914511,27cyclictest12963-21grep12:05:590
282109914412,108cyclictest2565-21cat11:05:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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