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2026-07-12 - 11:37

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 Jul 12, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14786224702226,97sleep00-21swapper19:09:430
148629916715,106cyclictest30603-21/usr/sbin/munin20:47:010
148629916640,106cyclictest895-21latency_hist00:20:100
148629916539,19cyclictest18308-21apt-get22:51:370
148629916016,120cyclictest27821-21df23:45:280
148629916015,101cyclictest20233-21df19:40:260
148629915914,20cyclictest800-21apt-get00:20:410
148629915635,100cyclictest12784-21systemd-journal22:50:010
148629915617,114cyclictest4243-21munin-run00:40:030
148629915512,117cyclictest8670-21apt21:50:020
148629915417,26cyclictest20953-21munin-run23:05:010
148629915414,37cyclictest31857-21df00:10:270
148629915412,26cyclictest10979-21cat22:01:020
148629915316,114cyclictest2439-21df21:10:250
148629915315,115cyclictest13486-21munin-run22:20:020
148629915313,100cyclictest2639-21modprobe00:30:000
148629915311,117cyclictest23350-21apt-get23:20:360
148629915310,118cyclictest19583-21/usr/sbin/munin19:35:470
148629915229,103cyclictest0-21swapper22:45:040
148629915216,25cyclictest15059-21df19:10:260
148629915215,115cyclictest23350-21apt23:20:020
148629915215,110cyclictest21844-21/usr/sbin/munin23:10:100
148629915213,115cyclictest6793-21mailstats21:35:550
148629915212,115cyclictest18814-21grep19:30:500
148629915211,102cyclictest25122-21grep23:26:090
148629915210,118cyclictest21738-21modprobe23:10:010
148629915118,106cyclictest24136-21apt-get20:05:190
148629915115,113cyclictest15300-21df22:30:250
148629915113,116cyclictest12784-21systemd-journal23:40:000
148629915113,111cyclictest15786-21latency19:15:130
148629915112,115cyclictest26443-21munin-run20:20:030
148629915110,99cyclictest31670-21wc20:50:320
148629915110,117cyclictest4064-21df21:20:240
148629915032,24cyclictest440-21switchtime20:56:000
148629915028,24cyclictest3828-21cron21:20:010
148629915017,27cyclictest11184-21apt-get22:05:170
148629915016,106cyclictest5876-21ntp_states21:30:510
148629915014,109cyclictest11973-21/usr/sbin/munin22:10:190
148629915013,24cyclictest9467-21munin-run21:55:010
148629915010,97cyclictest26032-21cat23:35:040
148629915010,24cyclictest4759-21/usr/sbin/munin21:25:570
148629914917,110cyclictest7155-21snmpd20:12:010
148629914915,23cyclictest17822-21df19:25:290
148629914914,32cyclictest17208-21ntpq19:20:490
148629914914,110cyclictest14691-21awk22:25:480
148629914913,114cyclictest21356-21find19:45:560
148629914840,88cyclictest1682-21if_err_eth021:05:390
148629914829,22cyclictest0-21swapper20:25:550
148629914822,19cyclictest19439-21apt-get22:55:160
148629914816,27cyclictest31135-21irqstats00:05:380
148629914816,27cyclictest23442-21df20:00:290
148629914816,21cyclictest27606-21munin-run23:45:010
148629914816,110cyclictest28647-21df23:50:240
148629914815,24cyclictest7292-21diskstats21:40:320
148629914813,37cyclictest7155-21snmpd20:40:570
148629914718,26cyclictest1447-21munin-run21:05:020
148629914717,26cyclictest28268-21diskstats20:30:340
148629914716,105cyclictest28948-21/usr/sbin/munin20:35:260
148629914714,38cyclictest22614-21df19:55:250
148629914714,111cyclictest22378-21users19:51:070
148629914635,18cyclictest13603-21/usr/sbin/munin22:20:220
148629914620,99cyclictest30164-21/usr/sbin/munin00:01:100
148629914616,22cyclictest16096-21df22:35:240
148629914612,23cyclictest29811-21mailstats23:55:590
148629914418,101cyclictest26563-21apt-get20:20:170
148629914417,102cyclictest2921-21irqstats00:30:410
148629914414,28cyclictest9829-21grep21:55:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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