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2025-12-31 - 16:21

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 all highest latencies:
System rack5slot7s.osadl.org (updated Wed Dec 31, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
468224032153,58sleep00-21swapper07:05:080
17319917518,27cyclictest12204-21apt-get11:30:260
17319915913,28cyclictest18339-21latency_hist08:50:010
17319915821,107cyclictest5472-21apt-get10:50:200
17319915711,122cyclictest22145-21grep12:30:030
17319915632,21cyclictest14425-21grep11:40:570
17319915628,33cyclictest0-21swapper11:16:000
17319915615,24cyclictest11982-21users11:26:050
1731991558,123cyclictest6166-21latency_hist10:55:090
17319915440,93cyclictest7584-21proc_pri07:40:510
17319915426,110cyclictest23509-21apt-get09:20:180
17319915412,119cyclictest22515-21/usr/sbin/munin09:16:290
17319915412,118cyclictest15629-21apt-get11:50:260
17319915318,24cyclictest16960-21diskstats08:40:300
17319915318,111cyclictest20170-21diskstats09:00:330
17319915317,108cyclictest13645-21apt-get08:20:170
17319915316,23cyclictest14440-21apt-get08:25:200
17319915315,99cyclictest7102-21munin-run07:40:040
17319915313,115cyclictest15459-21http11:50:040
17319915312,116cyclictest567-21basename10:20:020
17319915312,116cyclictest16447-21grep08:35:560
17319915310,26cyclictest13846-21munin-plugin-st11:40:020
17319915216,108cyclictest17401-21apt-get12:00:150
17319915212,28cyclictest2139-21diskstats07:10:570
1731991519,119cyclictest21645-21apt09:10:140
17319915137,22cyclictest8320-21ntp_offset07:45:460
17319915115,115cyclictest3842-21users07:16:300
17319915114,27cyclictest9373-21wc07:51:010
17319915114,114cyclictest2010-21threads10:26:010
17319915114,112cyclictest27002-21tr09:40:480
17319915112,115cyclictest6299-21latency_hist07:35:010
17319915111,116cyclictest8787-21awk11:06:070
17319915110,116cyclictest5290-21head10:46:020
17319915034,22cyclictest28129-21unixbench_singl09:46:020
17319915033,22cyclictest10669-21load08:00:430
17319915018,23cyclictest10534-21apt-get11:20:190
17319915018,109cyclictest17281-21munin-run12:00:030
17319915017,22cyclictest29793-21munin-run10:00:030
17319915017,106cyclictest5124-21ntp_states07:25:520
17319915012,114cyclictest13180-21ps08:15:540
17319914916,108cyclictest19955-21irqstats12:15:400
17319914912,22cyclictest11221-21/usr/sbin/munin08:05:360
17319914911,114cyclictest109-21systemd-journal10:15:010
17319914910,39cyclictest4126-21diskstats07:20:340
17319914875,50cyclictest30606-21latency_hist10:05:010
17319914832,21cyclictest3743-21cron10:40:000
17319914819,25cyclictest18987-21apt-get12:10:230
17319914818,24cyclictest25094-21apt-get09:30:190
17319914816,37cyclictest7423-21df11:00:340
17319914812,112cyclictest23700-21modprobe12:40:010
17319914811,99cyclictest9327-21grep11:10:570
17319914811,27cyclictest289-21snmpd10:23:520
17319914778,45cyclictest28295-21/usr/sbin/munin09:50:340
17319914735,91cyclictest18300-21df_inode12:05:300
17319914729,21cyclictest26591-21munin-run09:40:010
17319914716,26cyclictest24299-21/usr/sbin/munin09:25:400
17319914713,23cyclictest21071-21cut12:20:550
17319914713,110cyclictest19658-21rt-features08:55:560
17319914712,111cyclictest10306-21cat08:00:020
17319914711,114cyclictest22200-21apt-get12:30:180
17319914710,111cyclictest2342-21cstates10:30:250
17319914616,29cyclictest15887-21users08:31:050
17319914613,25cyclictest3987-21df_inode10:40:260
17319914613,23cyclictest31365-21/usr/sbin/munin10:06:070
17319914613,109cyclictest19136-21munin-run08:55:020
17319914511,49cyclictest12321-21awk08:10:480
17319914418,24cyclictest20951-21df09:05:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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