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2025-11-09 - 05:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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: 100 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 50 highest latencies:
System rack2slot7s.osadl.org (updated Sun Nov 09, 2025 00:39:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1496091995341,7cyclictest0-21swapper/122:09:091
1496092994940,5cyclictest422-21dbus-daemon21:25:022
149609099493,36cyclictest3736783-21cups-browsed22:49:030
1496091994838,6cyclictest3736783-21cups-browsed22:56:341
1496091994636,4cyclictest0-21swapper/122:24:121
1496091994635,7cyclictest421-21avahi-daemon23:44:131
149609199463,33cyclictest1567053-21ssh21:59:051
1496090994638,6cyclictest422-21dbus-daemon00:25:010
1496091994436,5cyclictest1557335-21cron21:45:011
1496091994436,3cyclictest0-21swapper/123:15:011
1496090994439,3cyclictest1667306-21munin-plugin-st00:20:010
1496090994431,5cyclictest422-21dbus-daemon23:25:010
1496091994335,5cyclictest1589185-21systemd-run22:30:011
149609199432,33cyclictest1591859-21ssh22:34:141
149609099433,31cyclictest1567021-21ssh21:59:040
1496092994234,5cyclictest1677038-21cut00:35:012
1496092994233,5cyclictest1532135-21diskmemload23:15:012
1496091994235,3cyclictest0-21swapper/119:19:051
1496091994235,3cyclictest0-21swapper/119:19:051
1496091994234,4cyclictest1493564-21kworker/u8:6-xprtiod19:45:011
1496091994230,8cyclictest0-21swapper/122:44:121
149609299414,26cyclictest1645428-21ssh23:49:082
1496092994132,5cyclictest1669173-21aten_r2power_en00:23:532
149609299411,31cyclictest1652552-21ssh23:59:062
1496091994133,5cyclictest1564458-21munin-plugin-st21:55:011
1496090994133,5cyclictest1530651-21systemd-run21:05:010
1496090994132,5cyclictest1615793-21aten_r2power_fr23:08:540
1496090994130,9cyclictest1679097-21needreboot00:39:050
1496092994032,5cyclictest1592662-21systemd-run22:35:012
1496092994031,5cyclictest0-21swapper/221:40:022
1496092994029,8cyclictest1575346-21latency_hist22:10:032
1496092994022,7cyclictest959-21mta-sts-daemon00:38:502
1496091994031,6cyclictest657-21snmpd19:15:011
1496091994031,6cyclictest657-21snmpd19:15:011
1496091994031,6cyclictest266-21systemd-journal00:20:011
1496091994029,8cyclictest1596111-21cron22:40:011
1496092993931,5cyclictest1628122-21cron23:25:012
1496092993930,4cyclictest0-21swapper/223:34:082
1496092993925,8cyclictest266-21systemd-journal23:04:082
149609299392,25cyclictest1623480-21ssh23:19:042
1496091993931,5cyclictest1560543-21tail21:49:181
1496092993830,4cyclictest0-21swapper/221:29:062
1496091993829,5cyclictest1549943-21unixbench_singl21:34:171
1496090993830,5cyclictest1-21systemd22:40:020
1496090993826,9cyclictest0-21swapper/000:00:030
1496092993729,5cyclictest1630665-21sh23:29:012
1496092993726,7cyclictest437-21mta-sts-daemon00:14:022
149609199376,26cyclictest1669827-21ssh00:24:041
1496091993730,5cyclictest1483199-21kworker/u8:13+xprtiod19:25:011
1496091993730,3cyclictest0-21swapper/123:49:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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