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2026-07-26 - 19:14

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Sun Jul 26, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32060224392200,97sleep00-21swapper07:08:440
322469916717,125cyclictest27671-21munin-run10:00:060
322469916214,24cyclictest2104-21munin-run10:40:020
322469916113,119cyclictest10782-21threads11:31:010
322469916023,109cyclictest18741-21apt-get12:20:310
322469916018,30cyclictest15336-21users11:56:050
322469916012,123cyclictest7927-21/usr/sbin/munin07:56:290
322469915719,114cyclictest19050-21df_inode09:05:280
322469915632,22cyclictest11115-21apt-get11:35:200
322469915615,116cyclictest4237-21apt-get07:35:170
322469915517,24cyclictest597-21munin-node07:15:080
322469915516,115cyclictest6753-21df07:50:270
322469915515,99cyclictest1734-21munin-run07:20:030
322469915514,119cyclictest30205-21sort10:11:030
322469915512,120cyclictest27855-21apt-get10:00:260
322469915511,27cyclictest10203-21/usr/sbin/munin08:10:320
322469915434,102cyclictest24194-21mailstats09:35:580
322469915418,29cyclictest21480-21diskstats09:20:330
322469915416,113cyclictest23220-21/usr/sbin/munin09:30:480
322469915415,23cyclictest11969-21apt-get11:41:390
322469915411,24cyclictest11585-21modprobe08:20:010
322469915318,108cyclictest16300-21apt-get12:05:170
322469915316,24cyclictest7128-21df11:10:280
322469915314,25cyclictest5541-21df_inode11:00:280
322469915313,118cyclictest21238-21apt-get12:36:070
322469915236,96cyclictest18483-21ls12:16:030
322469915226,22cyclictest32166-1kworker/u3:310:30:210
322469915223,23cyclictest8563-21latency_hist11:20:030
322469915217,26cyclictest6554-21munin-run07:50:010
322469915217,112cyclictest22268-21df09:25:300
322469915215,113cyclictest9450-21apt-get11:25:180
322469915215,113cyclictest18029-21munin-run09:00:010
322469915213,23cyclictest14215-21df_inode08:35:290
322469915127,19cyclictest13096-21apt-get11:45:200
322469915116,92cyclictest13416-21df08:30:280
322469915115,97cyclictest31933-21munin-run10:25:010
322469915114,23cyclictest11825-21df_inode08:20:290
322469915113,18cyclictest31931-21apt-get10:25:400
322469915112,24cyclictest20525-21cat12:30:050
322469915033,23cyclictest15835-21df_inode08:45:290
322469915019,24cyclictest4612-21apt-get10:55:220
322469915017,36cyclictest0-21swapper07:25:240
322469915015,47cyclictest20056-21ntp_states09:10:550
322469915014,39cyclictest24687-21df_inode09:40:300
322469914932,34cyclictest28819-21apt-get10:05:190
322469914919,29cyclictest30509-21df_inode10:15:300
322469914917,103cyclictest3020-21apt-get10:45:180
322469914916,109cyclictest3550-21diskstats07:30:290
322469914913,117cyclictest9983-21kworker/u2:008:10:010
322469914912,25cyclictest17089-21ls08:51:020
322469914910,113cyclictest12980-21cut08:25:590
322469914816,107cyclictest8757-21df_inode11:20:290
322469914815,30cyclictest2507-21users07:21:070
322469914814,91cyclictest21180-21grep12:31:040
322469914814,20cyclictest21026-21cut09:15:590
322469914813,111cyclictest26138-21wc09:50:050
322469914812,29cyclictest6231-21/usr/sbin/munin11:05:370
322469914812,111cyclictest18247-21df09:00:270
322469914810,25cyclictest2734-21grep10:41:020
322469914720,27cyclictest3928-21diskstats10:50:360
322469914720,101cyclictest15616-21diskstats12:00:360
322469914719,102cyclictest26414-21memory09:50:450
322469914718,36cyclictest5163-21df_inode07:40:280
322469914714,25cyclictest14932-21/usr/sbin/munin08:40:320
322469914620,25cyclictest8505-21apt-get08:00:270
322469914613,27cyclictest17738-21grep12:11:040
32246991458,22cyclictest13996-21df_inode11:50:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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