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2025-11-17 - 20:01

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Mon Nov 17, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31796224232188,95sleep00-21swapper07:08:070
320539916333,23cyclictest28553-21mailstats10:00:590
320539915913,23cyclictest8092-21apt-get11:10:260
320539915838,101cyclictest8105-21timerandwakeup07:56:090
320539915816,117cyclictest4486-21munin-run10:50:030
320539915816,117cyclictest3062-21df10:40:400
320539915812,119cyclictest4661-21/usr/sbin/munin10:51:300
320539915620,110cyclictest32654-21apt-get10:25:240
320539915616,24cyclictest2628-21irqstats07:25:410
320539915614,119cyclictest15721-21latency_hist08:45:010
320539915614,119cyclictest13979-21apt-get11:45:330
320539915612,119cyclictest21574-21systemctl09:20:020
320539915610,47cyclictest6537-21/usr/sbin/munin07:51:320
320539915516,115cyclictest9765-21munin-run11:20:030
320539915514,39cyclictest8236-21apt-get08:01:350
320539915416,24cyclictest19646-21munin-run12:20:000
320539915415,24cyclictest29843-21munin-run10:10:020
320539915339,22cyclictest23437-21if_eth009:30:380
320539915338,95cyclictest1974-21/usr/sbin/munin07:20:510
320539915321,105cyclictest13408-21apt-get08:30:230
320539915242,89cyclictest13152-21timerandwakeup08:26:020
320539915221,30cyclictest30381-21memory10:11:340
320539915217,24cyclictest5777-21diskstats07:45:340
320539915217,111cyclictest379-21munin-run07:15:040
320539915217,109cyclictest18319-21apt-get09:00:280
320539915215,24cyclictest10426-21cat11:21:000
320539915210,22cyclictest13797-21munin-run11:45:010
320539915116,111cyclictest10290-21diskstats08:10:330
320539915115,27cyclictest15819-21/usr/sbin/munin08:45:250
320539915112,115cyclictest17588-21/usr/sbin/munin08:55:390
320539915111,26cyclictest20064-21/usr/sbin/munin09:11:040
320539915018,33cyclictest7341-21diskstats11:05:330
320539915014,111cyclictest16649-21diskstats12:00:330
320539915012,24cyclictest7129-21munin-run11:05:010
320539915011,24cyclictest16449-21grep12:00:040
320539914915,24cyclictest11696-21munin-run08:20:030
320539914915,111cyclictest26606-21diskstats09:50:330
320539914915,110cyclictest3361-21diskstats07:30:330
320539914914,114cyclictest20464-21munin-plugin-st12:25:000
320539914914,112cyclictest12575-21grep11:35:500
320539914913,22cyclictest14628-21sendmail_mailqu08:35:580
320539914913,18cyclictest9389-21apt-get08:05:170
320539914912,27cyclictest11476-21/usr/sbin/munin11:30:140
320539914912,24cyclictest1480-21/usr/sbin/munin07:16:210
320539914912,116cyclictest25811-21diskstats09:45:320
320539914911,97cyclictest12489-21sshd08:21:340
320539914911,115cyclictest31774-21/usr/sbin/munin10:20:590
320539914911,115cyclictest24832-21wc09:40:050
320539914910,116cyclictest25205-21tr09:40:500
320539914910,116cyclictest17049-21find08:50:570
320539914836,22cyclictest4491-21mailstats07:36:000
320539914834,92cyclictest27463-21/usr/sbin/munin09:55:410
320539914818,28cyclictest2644-21munin-run10:40:030
320539914814,113cyclictest15828-1kworker/u3:309:05:220
320539914812,114cyclictest30465-1kworker/u3:110:15:190
320539914718,28cyclictest5115-21memory07:40:490
320539914716,111cyclictest6300-21kworker/u2:1111:00:010
320539914716,107cyclictest17438-21df12:05:280
320539914710,96cyclictest22418-21wc09:25:030
320539914623,105cyclictest3284-1kworker/u3:011:50:150
320539914615,38cyclictest22591-21df_inode09:25:290
320539914613,36cyclictest11209-21switchtime11:26:000
320539914613,22cyclictest1350-21cat10:30:490
320539914610,25cyclictest22045-21cron12:34:590
320539914514,27cyclictest18133-21/usr/sbin/munin12:10:370
320539914411,111cyclictest22155-21/usr/sbin/munin12:35:260
320539914210,23cyclictest20988-21sendmail_mailqu12:25:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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