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2026-03-24 - 07:54

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 all highest latencies:
System rack5slot7s.osadl.org (updated Tue Mar 24, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14808224382195,97sleep00-21swapper19:05:120
160689916818,125cyclictest32083-21apt-get00:00:150
160689916113,28cyclictest19850-21apt-get19:31:490
160689915919,117cyclictest29725-21apt-get20:31:060
160689915816,113cyclictest5877-21apt-get21:20:170
160689915715,117cyclictest12624-21df_inode22:00:280
160689915712,121cyclictest20515-21awk22:46:060
160689915712,121cyclictest10477-21grep21:45:550
160689915711,122cyclictest19156-21/usr/sbin/munin19:25:110
160689915618,39cyclictest6671-21apt-get21:25:150
160689915618,37cyclictest16045-21apt-get19:11:250
160689915617,114cyclictest24894-21munin-run20:00:020
160689915617,101cyclictest18187-21users19:16:280
160689915616,116cyclictest5152-21df_inode21:15:310
160689915613,121cyclictest29830-21irqstats23:45:400
160689915610,27cyclictest111-21systemd-journal20:40:010
160689915610,103cyclictest7364-21apt-get21:31:360
16068991559,123cyclictest15578-21vmstat22:16:150
160689915519,108cyclictest18364-21apt-get19:20:200
160689915517,114cyclictest1526-21df00:10:270
160689915516,38cyclictest2934-21munin-run00:20:030
160689915511,44cyclictest12466-21grep22:00:050
160689915511,119cyclictest8909-21grep21:36:020
160689915421,29cyclictest28349-21diskstats20:20:360
160689915413,115cyclictest27292-21modprobe20:15:010
160689915316,21cyclictest3122-21apt-get21:06:350
160689915314,115cyclictest25534-21munin-run23:20:020
160689915311,116cyclictest27397-21/usr/sbin/munin20:16:010
160689915237,93cyclictest25610-21timerwakeupswit20:01:030
160689915236,96cyclictest1480-21vmstat20:51:100
160689915217,48cyclictest24133-21df_inode23:10:290
160689915217,29cyclictest20982-21apt-get19:35:250
160689915215,37cyclictest22492-21df23:00:280
160689915118,24cyclictest5537-21df00:35:280
160689915117,111cyclictest22269-21munin-run23:00:020
160689915117,107cyclictest22117-21ntp_states19:40:500
160689915115,112cyclictest28739-21munin-run23:40:030
160689915112,25cyclictest4101-21sort00:25:470
160689915111,98cyclictest29724-21latency_hist20:30:000
160689915041,86cyclictest19833-21uptime22:41:100
160689915017,24cyclictest30563-21diskstats23:50:350
160689915013,25cyclictest11659-21cat21:55:050
160689915013,114cyclictest32136-21cut20:40:560
160689915011,113cyclictest18029-21apt-get22:35:340
16068991499,26cyclictest26025-21/usr/sbin/munin20:05:410
160689914921,28cyclictest32586-21diskstats20:45:360
160689914919,105cyclictest28861-21apt-get23:40:170
160689914914,113cyclictest31948-21/usr/sbin/munin00:00:060
160689914914,113cyclictest18031-21munin-run22:35:010
160689914913,22cyclictest23335-21df_inode23:05:270
160689914912,114cyclictest14214-21df22:10:270
160689914910,24cyclictest15740-21/usr/sbin/munin22:20:370
16068991488,117cyclictest23151-21sort19:46:030
160689914830,96cyclictest0-21swapper22:25:220
160689914820,28cyclictest27244-21apt-get23:30:200
160689914813,25cyclictest3371-21ntpq00:20:520
160689914721,27cyclictest13316-21apt-get22:05:190
160689914714,23cyclictest4687-21mailstats21:11:050
160689914713,19cyclictest23472-21wc19:50:220
160689914712,29cyclictest26919-21systemctl23:25:580
160689914618,35cyclictest4746-21df00:30:260
160689914617,23cyclictest1606-21apt-get20:55:170
160689914614,24cyclictest9514-21/usr/sbin/munin21:40:410
160689914611,43cyclictest25652-21/usr/sbin/munin23:20:370
160689914573,48cyclictest272-21snmpd22:51:020
160689914515,25cyclictest1291-21/usr/sbin/munin00:06:160
160689914431,20cyclictest0-21swapper21:00:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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