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2026-04-15 - 09:54

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 376 highest latencies:
System rack5slot7s.osadl.org (updated Wed Apr 15, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16273224272194,89sleep00-21swapper19:08:470
164519917119,124cyclictest21930-21munin-run23:00:010
164519916311,130cyclictest26987-21apt-get23:31:110
164519916216,23cyclictest26417-21munin-run20:10:020
164519916134,34cyclictest5430-21apt-get21:22:020
164519915915,119cyclictest2342-21apt-get21:00:140
164519915913,119cyclictest26415-21apt-get20:11:330
164519915815,99cyclictest8274-21apt21:35:010
164519915811,113cyclictest5750-1kworker/u3:121:27:030
164519915719,23cyclictest2932-21users00:16:040
164519915614,119cyclictest18722-21munin-run22:40:020
164519915524,102cyclictest1486-21apt-get00:10:220
164519915517,114cyclictest16535-21df_inode22:25:280
164519915516,117cyclictest17258-21munin-node19:15:060
164519915515,22cyclictest32181-21apt-get00:00:270
16451991549,123cyclictest27610-21/usr/sbin/munin20:15:300
164519915420,29cyclictest18628-21diskstats19:20:350
164519915414,119cyclictest20001-21apt19:30:020
164519915333,23cyclictest21085-21/usr/sbin/munin22:51:020
164519915323,29cyclictest22625-21diskstats19:45:330
164519915317,37cyclictest25961-21apt-get23:26:140
164519915317,23cyclictest9076-21munin-run21:40:020
164519915316,110cyclictest28383-21apt-get20:20:170
164519915313,26cyclictest29605-21munin-run23:45:010
164519915312,117cyclictest25248-21latency_hist23:20:050
164519915217,23cyclictest4596-21apt-get00:31:140
164519915216,25cyclictest21599-21munin-run19:40:020
164519915215,34cyclictest20575-21plymouth19:30:580
164519915214,27cyclictest22732-21cron23:05:010
164519915210,119cyclictest13029-21head22:01:010
16451991519,118cyclictest30659-21cron20:35:010
164519915117,25cyclictest3246-21diskstats21:05:330
164519915117,109cyclictest11587-21apt-get21:55:170
164519915114,116cyclictest31471-21irqstats23:55:410
164519915110,118cyclictest3801-21apt00:25:010
164519915028,20cyclictest6507-21date00:40:060
164519915022,28cyclictest21723-21apt-get19:40:220
164519915015,97cyclictest14695-21munin-run22:15:020
164519915012,115cyclictest23868-21sort23:10:420
164519915012,101cyclictest23561-21ls19:50:440
164519915010,119cyclictest272-21snmpd00:25:590
164519914916,24cyclictest31469-21munin-run20:40:020
164519914914,113cyclictest111-21systemd-journal21:50:010
164519914912,114cyclictest1334-21grep20:51:020
164519914911,114cyclictest111-21systemd-journal20:50:010
16451991489,115cyclictest25007-21wc20:00:230
164519914828,96cyclictest0-21swapper21:10:100
164519914816,47cyclictest15110-21ntp_states22:15:510
164519914816,109cyclictest790-21df00:05:340
164519914815,111cyclictest31193-21apt23:55:010
164519914814,97cyclictest17451-21diskstats19:15:190
164519914814,27cyclictest13858-21/usr/sbin/munin22:06:050
164519914812,114cyclictest9270-21cstates21:40:230
164519914810,29cyclictest29679-21switchtime20:25:590
164519914733,18cyclictest30397-21munin-plugin-st23:50:010
164519914717,107cyclictest17918-21apt22:35:010
164519914714,24cyclictest1824-21grep20:55:490
164519914713,111cyclictest11154-21grep21:50:520
164519914712,39cyclictest25695-21wc23:20:560
164519914711,27cyclictest20376-21grep22:50:040
164519914622,98cyclictest22846-21apt-get23:05:170
164519914616,24cyclictest28090-21apt-get23:35:120
164519914612,108cyclictest24417-21ntpq19:55:490
164519914610,26cyclictest31587-21sshd20:40:110
164519914516,24cyclictest4898-21irqstats21:15:400
164519914516,21cyclictest15631-21apt-get22:20:180
164519914213,105cyclictest18905-21cstates22:40:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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