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2026-04-26 - 16:23

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 Sun Apr 26, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12422224212180,98sleep00-21swapper07:07:220
127609916214,28cyclictest9279-21gpg-connect-age10:05:320
127609916111,127cyclictest18724-21modprobe07:45:020
127609915914,119cyclictest20094-21apt-get11:10:270
127609915913,101cyclictest17213-21apt-get07:35:120
127609915911,121cyclictest14822-21/usr/sbin/munin07:20:590
127609915815,100cyclictest2397-21grep12:37:000
12760991578,123cyclictest8717-21mailstats10:00:560
127609915719,109cyclictest16882-21diskstats10:50:340
127609915716,116cyclictest25153-21munin-run08:25:010
127609915614,117cyclictest27546-21apt-get11:55:300
127609915517,114cyclictest13567-21munin-node07:15:090
127609915517,109cyclictest15620-21apt-get07:25:180
127609915516,116cyclictest26159-21diskstats08:30:310
127609915515,115cyclictest29202-21sort08:45:590
127609915514,116cyclictest14361-21/usr/sbin/munin10:35:300
127609915440,93cyclictest25415-21/usr/sbin/munin11:40:500
127609915420,107cyclictest22788-21diskstats11:25:340
127609915416,115cyclictest31624-21munin-run12:20:030
127609915414,23cyclictest13227-21apt-get10:31:060
127609915413,40cyclictest26741-21apt-get08:36:020
127609915411,116cyclictest14683-21cron07:20:010
127609915410,118cyclictest29430-21df_inode12:05:280
127609915317,24cyclictest20281-21users07:51:070
127609915315,99cyclictest8152-21sh10:00:000
127609915314,41cyclictest23878-21sort08:15:470
127609915312,99cyclictest31470-21proc_pri09:00:520
127609915312,25cyclictest27313-21head11:51:020
127609915218,108cyclictest29486-21apt-get08:50:190
127609915214,24cyclictest5731-21users09:41:080
127609915210,25cyclictest31013-21latency_hist09:00:040
127609915119,32cyclictest5871-21apt-get09:45:220
127609915118,107cyclictest6665-21apt-get09:50:180
127609915117,27cyclictest25891-21apt-get11:45:180
127609915116,107cyclictest12528-21apt-get10:25:200
127609915025,21cyclictest0-21swapper10:55:360
127609915021,101cyclictest2774-21diskstats09:25:340
127609915019,25cyclictest11733-21apt-get10:20:160
127609915015,24cyclictest24374-21df11:35:270
127609915014,95cyclictest16432-21cut10:45:570
127609915014,113cyclictest22606-21wc11:25:040
127609915014,112cyclictest11611-21munin-run10:20:020
127609915013,24cyclictest27897-21/usr/sbin/munin08:40:120
127609915012,39cyclictest9680-1kworker/u3:010:10:180
127609915012,24cyclictest15367-21uname10:40:400
127609915011,25cyclictest21704-21/usr/sbin/munin08:00:570
127609914936,18cyclictest0-21swapper12:04:070
127609914918,29cyclictest19884-21users11:06:050
127609914917,24cyclictest339-21diskstats09:10:340
127609914917,21cyclictest21765-21munin-run11:20:010
127609914917,107cyclictest1272-21/usr/sbin/munin09:15:430
127609914841,85cyclictest20738-21sh07:55:510
127609914820,27cyclictest19082-21apt-get11:04:520
127609914819,27cyclictest23587-21diskstats11:30:330
127609914818,105cyclictest31848-21df12:20:260
127609914815,23cyclictest22037-21apt-get08:05:180
127609914810,26cyclictest787-21wc12:30:040
127609914771,53cyclictest2491-21grep09:21:020
127609914735,91cyclictest30764-21grep12:11:040
127609914715,23cyclictest25357-21df_inode08:25:300
127609914714,110cyclictest4048-21cat09:31:000
127609914713,21cyclictest19587-21grep07:50:060
127609914711,24cyclictest16854-21awk07:30:550
127609914615,26cyclictest31902-21apt-get09:05:180
127609914516,104cyclictest4251-21/usr/sbin/munin09:36:030
127609914412,109cyclictest1492-21sed12:31:030
127609914211,105cyclictest22828-21/usr/sbin/munin08:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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