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2025-09-18 - 20:09

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 all highest latencies:
System rack5slot7s.osadl.org (updated Thu Sep 18, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29014224342177,99sleep00-21swapper07:08:260
292349916613,129cyclictest2045-21wc10:55:050
292349916234,22cyclictest12314-21wc11:55:550
292349916117,100cyclictest16869-21apt-get09:12:020
292349915915,24cyclictest4441-21/usr/sbin/munin07:55:590
292349915716,118cyclictest4652-21irqstats11:10:380
292349915617,24cyclictest2176-21diskstats10:55:370
292349915519,27cyclictest11265-21diskstats11:50:350
292349915422,23cyclictest31310-21apt-get10:35:180
292349915415,22cyclictest12630-21apt-get08:45:560
292349915414,115cyclictest31662-21ps07:20:540
292349915412,119cyclictest30033-21sed07:15:020
292349915410,43cyclictest7608-21apt-get11:30:300
292349915321,27cyclictest10631-21ntp_states08:30:490
292349915315,23cyclictest2957-21df_inode07:45:300
292349915313,119cyclictest31178-21munin-run07:20:020
292349915222,103cyclictest32204-21diskstats07:25:390
292349915214,114cyclictest994-21cat10:46:000
292349915213,37cyclictest7564-21munin-run08:15:020
292349915212,115cyclictest1592-21ps07:35:530
29234991519,117cyclictest17881-21ntpq12:30:460
292349915139,22cyclictest15391-21cpu09:00:200
292349915119,26cyclictest19038-21apt-get09:20:240
292349915118,107cyclictest9042-21ntp_states08:21:000
292349915117,111cyclictest8184-21ntp_states08:16:350
292349915116,24cyclictest6821-21latency_hist11:25:030
292349915115,112cyclictest16967-21irqstats12:25:390
292349915113,113cyclictest9288-21sort11:36:060
292349915112,113cyclictest14161-21timerwakeupswit12:06:040
292349915110,98cyclictest11035-21sshd11:47:380
292349914932,95cyclictest13469-21apt12:05:010
292349914920,28cyclictest15818-21users12:16:040
292349914918,25cyclictest14367-21apt-get12:10:150
292349914917,24cyclictest22418-21irqstats09:40:400
292349914917,23cyclictest24013-21irqstats09:50:380
292349914916,38cyclictest28562-21apt-get10:21:260
292349914914,24cyclictest16334-21/usr/sbin/munin12:20:560
292349914913,114cyclictest6597-21grep08:06:010
292349914911,29cyclictest14965-21rt-features08:55:550
29234991489,115cyclictest16544-21wc09:05:540
292349914820,28cyclictest28093-21memory10:15:460
292349914816,35cyclictest17899-21apt-get09:16:370
292349914816,107cyclictest430-21apt-get07:30:120
292349914815,114cyclictest112-21systemd-journal10:42:090
292349914815,108cyclictest12632-21munin-run08:45:030
292349914815,106cyclictest26257-21/usr/sbin/munin10:05:380
292349914813,111cyclictest3964-21/usr/sbin/munin11:05:470
29234991479,113cyclictest3536-21head11:01:020
292349914715,110cyclictest11225-21diskstats08:35:340
292349914636,88cyclictest26085-21grep10:01:030
292349914632,21cyclictest0-21swapper08:00:400
292349914620,27cyclictest29819-21df10:25:340
292349914618,93cyclictest0-21swapper10:31:010
292349914614,26cyclictest27051-21/usr/sbin/munin10:10:330
292349914612,110cyclictest21052-21wc09:31:000
292349914518,101cyclictest19832-21apt-get09:25:180
292349914516,25cyclictest23214-21irqstats09:45:370
292349914515,107cyclictest2162-21diskstats07:40:320
292349914511,111cyclictest3644-21/usr/sbin/munin07:50:280
292349914510,111cyclictest9934-21grep08:25:520
292349914418,25cyclictest7018-21df_inode11:25:320
292349914416,106cyclictest13871-21diskstats08:50:380
292349914317,22cyclictest18566-21irqstats12:35:460
292349914314,45cyclictest24745-21df_inode09:55:300
292349914311,22cyclictest9979-21grep11:40:560
292349914311,106cyclictest21421-21/usr/sbin/munin09:36:080
292349914211,28cyclictest5388-21diskstats11:15:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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