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2026-03-26 - 01:07

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 Mar 25, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19202224452211,92sleep00-21swapper07:07:300
195279916718,123cyclictest24202-21date10:50:060
195279916518,119cyclictest3006-21apt08:40:010
195279916318,120cyclictest32219-21apt-get08:20:270
195279916015,102cyclictest19944-21/usr/sbin/munin10:25:050
195279915917,119cyclictest32027-21apt08:20:010
195279915913,121cyclictest18652-21awk10:15:480
195279915912,24cyclictest29213-21modprobe11:20:000
195279915842,23cyclictest9470-21latency_hist09:20:040
195279915817,23cyclictest21470-21apt-get07:20:420
195279915718,96cyclictest6626-21apt12:20:020
195279915716,102cyclictest21475-21munin-run07:20:020
195279915614,121cyclictest23382-21munin-run10:45:000
195279915614,118cyclictest8342-21apt-get12:30:190
195279915614,117cyclictest26954-21df07:50:270
195279915612,119cyclictest17463-21munin-plugin-st10:10:010
195279915522,106cyclictest13561-21apt-get09:45:170
195279915520,113cyclictest19942-21apt-get10:26:360
195279915516,114cyclictest24344-21apt-get10:50:260
195279915514,24cyclictest2022-21df_inode11:50:300
195279915512,22cyclictest13130-21wc09:40:540
195279915512,117cyclictest3512-21latency_hist12:00:080
195279915511,120cyclictest1416-21munin-plugin-st08:30:010
195279915431,19cyclictest0-21swapper10:00:220
195279915417,23cyclictest5223-21df_inode12:10:280
195279915416,23cyclictest8587-21users09:11:060
195279915415,24cyclictest21309-21/usr/sbin/munin10:30:460
195279915412,40cyclictest20431-21munin-node07:55:120
195279915318,24cyclictest9135-21apt-get12:35:150
195279915316,114cyclictest21967-21df_inode10:35:270
195279915311,25cyclictest26820-21munin-run11:05:010
195279915310,103cyclictest30831-21apt-get11:31:390
195279915231,98cyclictest15395-21missed_timers09:55:430
195279915216,113cyclictest6445-21df_inode09:00:280
195279915213,26cyclictest1514-21/usr/sbin/munin08:30:350
195279915212,117cyclictest25062-21apt-get07:40:300
19527991519,24cyclictest3415-21grep08:40:470
195279915172,51cyclictest24209-21apt-get07:35:170
195279915118,110cyclictest1222-21df_inode11:45:280
195279915118,105cyclictest11148-21apt-get09:30:170
195279915113,95cyclictest29401-21apt-get08:06:090
195279915113,115cyclictest4026-21df08:45:280
19527991509,41cyclictest12575-21sed09:36:040
195279915032,96cyclictest4427-21df_inode12:05:270
195279915019,104cyclictest316-21apt-get11:40:160
195279915015,35cyclictest29403-21munin-run08:05:050
195279915012,56cyclictest25305-21apt-get10:55:180
195279915010,27cyclictest22987-21wc07:25:590
195279914932,19cyclictest0-21swapper12:00:400
195279914917,107cyclictest19740-21diskstats07:10:340
195279914915,112cyclictest24109-21munin-run07:35:020
195279914913,22cyclictest7238-21df_inode09:05:280
195279914912,23cyclictest9984-21find09:20:580
195279914815,24cyclictest27028-21df_inode11:05:290
195279914813,110cyclictest30136-21/usr/sbin/munin11:25:590
195279914810,26cyclictest26188-21fw_packets07:45:420
195279914810,23cyclictest10616-21grep09:25:460
195279914734,93cyclictest28399-21modprobe11:15:000
195279914716,109cyclictest32663-21munin-run11:40:020
195279914716,109cyclictest17669-21df_inode10:10:280
195279914715,110cyclictest5376-21users08:51:060
195279914713,28cyclictest8013-21mailstats12:25:590
195279914618,26cyclictest6172-21/usr/sbin/munin08:56:030
195279914616,105cyclictest30527-21apt-get08:10:240
195279914434,90cyclictest7363-21grep12:21:040
195279914415,21cyclictest29346-21apt-get11:20:160
195279914310,34cyclictest15117-21latency_hist09:55:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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