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2025-11-18 - 19:09

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 highest latencies:
System rack5slot7s.osadl.org (updated Tue Nov 18, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19009224352196,96sleep00-21swapper07:06:360
194389916515,24cyclictest23830-21apt-get07:32:010
194389916018,119cyclictest12914-21df_inode09:45:330
194389915911,123cyclictest30218-21mailstats08:10:590
19438991588,124cyclictest7634-21apt-get09:16:550
194389915817,116cyclictest26817-21diskstats11:10:310
19438991578,122cyclictest10675-21grep09:30:490
194389915730,19cyclictest29927-21/usr/sbin/munin11:30:100
194389915719,114cyclictest633-21apt-get11:51:340
194389915717,115cyclictest5459-21diskstats09:00:350
194389915714,26cyclictest7399-21/usr/sbin/munin12:31:070
194389915617,112cyclictest575-21apt-get11:47:240
194389915616,114cyclictest25221-21diskstats11:00:340
194389915535,21cyclictest25448-21/usr/sbin/munin07:40:580
194389915516,23cyclictest22995-21munin-run07:30:040
194389915515,117cyclictest23158-21apt-get10:50:370
194389915515,116cyclictest24389-21df10:55:340
194389915514,117cyclictest6033-21cat12:20:440
194389915513,118cyclictest5791-21cat12:20:050
194389915428,92cyclictest31411-21cron11:40:010
194389915414,39cyclictest21620-21/usr/sbin/munin07:20:340
194389915413,117cyclictest31977-21wc11:40:570
194389915413,115cyclictest8822-21head12:36:070
194389915410,106cyclictest6411-21ls09:05:480
194389915323,30cyclictest19644-21diskstats07:10:440
194389915319,24cyclictest16139-21diskstats10:05:340
194389915315,26cyclictest7431-21/usr/sbin/munin09:11:000
194389915312,25cyclictest29417-21grep11:25:500
194389915311,117cyclictest9899-21awk09:25:480
194389915310,42cyclictest21123-21cut07:16:140
194389915310,119cyclictest11900-21tr09:40:020
194389915236,22cyclictest2639-21switchtime08:41:020
194389915228,104cyclictest20682-21grep10:31:040
194389915217,112cyclictest24830-21munin-run07:40:030
194389915217,110cyclictest4637-21diskstats08:55:370
194389915215,95cyclictest15225-21apt-get10:00:220
194389915215,23cyclictest14512-21diskstats09:55:340
194389915213,24cyclictest13886-21grep09:50:470
194389915211,117cyclictest32290-21sshd08:25:340
194389915211,117cyclictest31863-21snmpd08:16:010
194389915210,26cyclictest9338-21awk09:21:120
194389915210,119cyclictest1375-21cstates08:35:250
19438991519,24cyclictest21548-21modprobe10:40:020
194389915113,23cyclictest112-21systemd-journal11:20:000
194389915111,118cyclictest27928-21wc07:56:040
194389915028,99cyclictest943-21wc08:30:560
194389915020,103cyclictest17728-21diskstats10:15:360
194389915014,38cyclictest3836-21diskstats08:50:340
194389915014,115cyclictest3221-21grep12:01:050
194389914933,96cyclictest26841-21ntpq07:50:480
194389914910,24cyclictest17248-21find10:10:570
194389914838,21cyclictest28986-21cpu08:05:240
194389914828,99cyclictest3455-21cat08:46:080
194389914818,25cyclictest3383-21apt-get12:05:190
194389914815,23cyclictest28596-21awk08:00:580
194389914811,38cyclictest7382-21cat12:30:060
194389914718,29cyclictest22705-21memory10:45:480
194389914716,27cyclictest28334-21/usr/sbin/munin11:20:510
194389914712,113cyclictest32079-21munin-plugin-st08:25:010
194389914711,114cyclictest18683-21/usr/sbin/munin10:20:430
19438991469,27cyclictest26670-21wc11:10:040
194389914615,25cyclictest21774-21df_inode10:40:330
194389914613,111cyclictest26255-21wc07:45:590
194389914523,103cyclictest1763-21apt-get11:55:190
194389914515,108cyclictest4289-21diskstats12:10:330
194389914514,109cyclictest12118-21df_inode09:40:300
194389914514,106cyclictest19943-21latency_hist10:30:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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