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2026-08-29 - 17:02

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 Sat Aug 29, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31312224562213,98sleep00-21swapper07:07:200
316529916519,25cyclictest32461-21munin-node07:15:090
316529916515,128cyclictest14666-21apt-get08:41:160
316529916514,128cyclictest22146-21latency_hist09:25:010
316529916220,119cyclictest27975-21apt10:00:010
316529916116,118cyclictest12138-21apt-get08:22:050
316529916011,123cyclictest15245-21find11:55:550
316529915718,21cyclictest4348-21apt-get07:40:450
316529915715,116cyclictest30559-21apt-get10:15:270
316529915713,104cyclictest8181-21sort11:11:030
316529915711,29cyclictest21929-21cron12:40:010
316529915616,115cyclictest8829-21/usr/sbin/munin11:15:580
316529915520,25cyclictest2576-21apt-get10:40:190
316529915518,113cyclictest24534-21apt09:40:020
316529915516,24cyclictest17268-21users08:51:070
316529915515,21cyclictest32460-21apt-get10:25:260
316529915515,117cyclictest6194-21apt-get07:51:150
316529915514,23cyclictest12316-21munin-run11:40:020
316529915512,117cyclictest3135-21grep07:30:470
316529915511,24cyclictest5835-21apt-get11:00:280
316529915418,113cyclictest8015-21munin-run08:00:030
316529915416,24cyclictest5057-21df10:55:250
316529915414,116cyclictest21333-21munin-run09:20:010
316529915333,99cyclictest13873-21unixbench_singl11:46:030
316529915321,30cyclictest3481-21diskstats10:45:360
316529915319,111cyclictest0-21swapper07:45:460
316529915313,26cyclictest32557-21munin-node12:20:110
316529915311,40cyclictest20433-21head09:11:020
316529915310,118cyclictest18741-21munin-run12:20:020
316529915236,21cyclictest14721-21munin-run11:55:010
316529915212,119cyclictest23407-21wc09:30:530
316529915212,116cyclictest13106-21awk11:41:070
316529915212,115cyclictest16262-21head12:01:010
316529915212,115cyclictest13019-21unixbench_singl08:26:110
316529915211,41cyclictest14685-21basename08:40:020
316529915135,20cyclictest17602-21grep12:10:530
316529915123,110cyclictest31049-1kworker/u3:110:20:160
316529915111,117cyclictest9551-21unixbench_singl08:06:030
31652991509,23cyclictest22496-21grep09:25:440
316529915016,111cyclictest24900-21memory09:40:440
316529915015,113cyclictest1140-21munin-run07:20:020
316529915013,113cyclictest19930-21cat12:25:490
316529915012,29cyclictest12784-21systemd-journal10:01:080
316529915012,114cyclictest2181-21wc10:35:580
316529915011,117cyclictest16306-21cut08:46:060
316529915010,116cyclictest26955-21grep09:55:050
316529914917,94cyclictest11231-21munin-run08:20:030
316529914917,109cyclictest30382-21munin-run10:15:020
316529914915,28cyclictest11498-21sshd11:33:070
316529914911,39cyclictest13609-21awk08:30:570
316529914911,26cyclictest8134-21/usr/sbin/munin08:00:490
316529914911,26cyclictest7092-21grep11:05:530
316529914819,26cyclictest9835-21diskstats08:10:350
316529914819,22cyclictest1914-21users07:21:070
316529914818,43cyclictest18336-21df_inode09:00:290
316529914817,105cyclictest17409-21apt-get08:55:200
316529914815,25cyclictest10022-21/usr/sbin/munin11:25:320
316529914815,110cyclictest20549-21df12:30:250
316529914814,106cyclictest25456-21apt-get09:45:170
316529914812,97cyclictest19605-21sort09:06:020
316529914812,110cyclictest4470-21latency_hist07:40:110
316529914810,97cyclictest2681-21grep07:26:030
316529914714,110cyclictest4275-21diskstats10:50:330
316529914711,21cyclictest1385-21find10:31:020
316529914633,21cyclictest17168-21latency_hist12:10:030
316529914517,26cyclictest29004-21diskstats10:05:330
316529914330,18cyclictest0-21swapper11:20:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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