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2026-01-07 - 03:31

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 Wed Jan 07, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2084224072208,147sleep00-21swapper19:09:260
21909916214,124cyclictest23068-21apt-get21:15:040
21909916016,21cyclictest5145-21df19:25:270
21909916010,23cyclictest5536-21apt-get22:46:490
21909915918,25cyclictest15641-21apt-get20:31:070
21909915912,123cyclictest23127-21find00:30:560
21909915834,99cyclictest10546-21cron23:15:000
21909915817,116cyclictest14575-21munin-run23:40:020
21909915811,121cyclictest25718-21apt-get21:31:590
21909915711,26cyclictest4843-21/usr/sbin/munin22:40:360
21909915613,119cyclictest4973-21cat19:25:040
21909915611,122cyclictest19389-21apt00:10:010
21909915520,21cyclictest0-21swapper21:45:000
21909915518,111cyclictest18000-21df00:00:240
21909915515,96cyclictest8072-21grep19:41:020
21909915512,30cyclictest28649-21uname21:45:390
21909915428,21cyclictest16769-21apt-get20:35:170
21909915417,24cyclictest29952-21apt21:55:010
21909915417,114cyclictest23068-21apt-get21:16:060
21909915416,23cyclictest14012-21munin-run20:20:070
21909915415,116cyclictest17781-21munin-run00:00:030
21909915414,98cyclictest11453-21wc23:20:060
21909915413,21cyclictest8147-21apt-get19:46:360
21909915413,117cyclictest12483-21apt-get20:10:200
21909915413,116cyclictest2493-21cat19:10:420
21909915313,117cyclictest17692-21df_inode20:40:280
21909915311,118cyclictest15123-21irqstats20:25:410
21909915310,102cyclictest9457-21/usr/sbin/munin19:50:460
21909915218,109cyclictest25128-21df21:25:250
21909915212,28cyclictest21564-21wc21:05:060
21909915210,119cyclictest3695-21mailstats22:30:560
21909915139,91cyclictest1745-21df_inode22:20:310
21909915121,24cyclictest14267-21diskstats20:20:350
21909915117,112cyclictest21683-21df21:05:260
21909915116,108cyclictest3092-21munin-node00:10:120
21909915113,100cyclictest15416-21cat23:45:040
21909915112,24cyclictest32308-21sed22:06:020
21909915112,115cyclictest9759-21cron23:10:000
21909915039,23cyclictest20338-21processes20:55:540
21909915018,29cyclictest16283-21/usr/sbin/munin23:50:520
21909915016,35cyclictest10170-21df19:55:250
21909915016,25cyclictest20286-21apt-get00:15:170
21909914918,20cyclictest0-21swapper23:00:460
21909914917,23cyclictest2996-21munin-node19:15:090
21909914911,115cyclictest11305-21grep20:00:550
21909914816,26cyclictest24339-21df_inode21:20:370
21909914816,26cyclictest11683-21/usr/sbin/munin20:05:470
21909914815,36cyclictest19171-21/usr/sbin/munin20:50:330
21909914814,23cyclictest8157-21munin-run23:00:000
21909914813,23cyclictest5945-21df_inode19:30:280
21909914813,105cyclictest15589-21df23:45:250
21909914811,26cyclictest6663-21munin-node22:50:120
21909914733,18cyclictest0-21swapper20:50:050
21909914728,22cyclictest0-21swapper22:10:580
21909914713,24cyclictest26956-21df_inode21:35:360
21909914711,113cyclictest24164-21sshd00:36:070
21909914710,115cyclictest7094-21cut19:35:560
21909914618,103cyclictest21913-21apt-get00:25:160
21909914617,28cyclictest30054-21/usr/sbin/munin21:55:330
21909914616,28cyclictest11806-21ntp_states23:20:520
21909914615,104cyclictest2433-21/usr/sbin/munin22:25:360
21909914613,25cyclictest1556-21cat22:20:040
21909914610,30cyclictest21116-21/usr/sbin/munin00:20:510
21909914610,111cyclictest31196-21/usr/sbin/munin22:00:530
21909914510,23cyclictest4200-21uname22:35:390
21909914420,20cyclictest13254-21irqstats23:30:400
21909914412,30cyclictest12773-21mailstats23:25:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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