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2026-09-17 - 00:36

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Wed Sep 16, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19502224552217,95sleep00-21swapper07:06:560
198919916015,117cyclictest1748-21/usr/sbin/munin08:35:140
198919915828,107cyclictest4520-21apt-key08:50:210
198919915819,31cyclictest7655-21/usr/sbin/munin12:27:120
198919915816,117cyclictest3185-21apt-get12:00:120
198919915812,115cyclictest26630-21sshd07:48:220
198919915714,24cyclictest18104-21cat10:10:410
198919915616,24cyclictest6906-21apt-get09:06:120
198919915615,116cyclictest25161-21apt-get07:40:200
198919915614,39cyclictest9455-21/usr/sbin/munin12:35:210
198919915614,121cyclictest17004-21munin-run10:05:010
198919915614,118cyclictest3264-21apt-get08:46:160
198919915531,99cyclictest23112-21ps07:25:550
198919915516,112cyclictest14456-21apt-get09:50:160
198919915512,28cyclictest21204-21cstates07:15:420
198919915510,120cyclictest8030-21/usr/sbin/munin09:11:000
19891991549,121cyclictest12747-21systemctl09:40:010
198919915430,19cyclictest0-21swapper09:40:580
198919915425,31cyclictest0-21swapper11:50:000
198919915420,107cyclictest21233-21diskstats10:30:360
198919915419,96cyclictest9363-21awk09:16:010
198919915415,23cyclictest19406-21munin-run10:20:030
198919915414,116cyclictest13833-21irqstats09:45:390
198919915412,35cyclictest28930-21sed11:16:010
198919915410,29cyclictest24756-21find10:50:550
198919915333,19cyclictest15316-21/usr/sbin/munin09:56:360
198919915317,24cyclictest20327-21apt-get10:25:170
198919915315,50cyclictest2887-21ntp_states08:40:530
198919915314,45cyclictest5229-21memory12:10:420
198919915312,114cyclictest619-21mailstats08:26:590
198919915310,24cyclictest26370-21fgrep11:00:580
198919915233,96cyclictest30132-21irqstats08:10:390
198919915213,27cyclictest16882-21snmpd07:50:470
198919915213,114cyclictest16882-21snmpd08:24:010
198919915212,25cyclictest17416-21grep10:05:490
198919915211,117cyclictest6724-21munin-run12:20:040
198919915211,117cyclictest11943-21munin-run09:35:010
198919915210,116cyclictest3175-21/usr/sbin/munin12:00:100
19891991519,118cyclictest32424-21/usr/sbin/munin11:40:210
198919915141,90cyclictest28213-21vmstat07:56:080
198919915121,103cyclictest30755-21apt-get08:15:220
198919915118,25cyclictest19988-21apt-get07:10:260
198919915117,27cyclictest9770-21diskstats09:20:340
198919915115,26cyclictest24212-21sshd10:49:210
198919915111,24cyclictest6793-21sort09:01:020
198919915030,22cyclictest28325-21latency_hist11:15:040
198919915021,28cyclictest22913-21irqstats10:40:410
198919915014,113cyclictest23765-21cat07:30:430
198919915013,115cyclictest30005-21apt-get11:25:130
198919914914,113cyclictest21950-21/usr/sbin/munin07:20:230
198919914914,112cyclictest19638-21diskstats10:20:320
198919914912,112cyclictest31592-21/usr/sbin/munin11:35:570
198919914816,25cyclictest4197-21apt-get12:05:170
198919914813,112cyclictest28621-21missed_timers08:00:470
198919914715,107cyclictest26847-21df_inode11:05:300
198919914629,99cyclictest6403-1kworker/u3:312:30:150
198919914616,26cyclictest7538-21munin-run12:25:020
198919914615,103cyclictest24340-21apt-get07:35:220
198919914612,23cyclictest957-21apt-get08:30:150
198919914516,25cyclictest1650-21df11:50:260
198919914513,110cyclictest29210-21apt-get11:20:200
198919914512,27cyclictest11207-21wc09:30:050
198919914510,24cyclictest22281-21wc10:35:550
198919914510,111cyclictest29265-21df08:05:250
198919914415,28cyclictest30972-21/usr/sbin/munin11:30:380
198919914414,23cyclictest5395-21sshd08:55:210
198919914312,26cyclictest25121-21/usr/sbin/munin10:55:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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