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2025-11-24 - 03:16

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 Mon Nov 24, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1379224412199,97sleep00-21swapper19:07:180
1725991639,132cyclictest5894-21wc19:31:010
17259916342,99cyclictest21839-21latency_hist21:10:040
17259915931,19cyclictest24966-21unixbench_singl21:26:040
17259915930,19cyclictest0-21swapper21:15:590
17259915817,116cyclictest16763-21apt-get20:40:500
17259915642,24cyclictest16914-21processes23:55:550
17259915622,107cyclictest7915-21diskstats19:45:360
17259915617,114cyclictest20213-21munin-run21:00:030
17259915540,23cyclictest17829-21swap00:01:030
17259915518,39cyclictest3839-21apt-get22:41:050
17259915517,114cyclictest13769-21munin-run23:40:060
17259915512,118cyclictest28105-21/usr/sbin/munin21:46:010
1725991549,119cyclictest12748-21grep20:15:040
17259915421,32cyclictest13917-21memory20:20:480
17259915421,107cyclictest12954-21diskstats20:15:360
17259915416,25cyclictest2519-21munin-run19:15:010
17259915416,114cyclictest24255-21munin-run21:25:020
17259915413,117cyclictest323-21grep22:15:560
17259915318,25cyclictest10678-21apt-get23:20:210
17259915314,115cyclictest22618-21memory00:30:430
17259915313,116cyclictest19623-21apt-get00:15:370
17259915312,25cyclictest16470-21cat23:55:040
17259915311,27cyclictest4071-21ntp_kernel_err19:20:480
1725991529,102cyclictest29384-21grep21:55:430
17259915235,36cyclictest26882-21sh21:40:300
17259915233,21cyclictest6607-21find19:35:560
17259915212,21cyclictest10276-21apt-get20:00:260
17259915126,104cyclictest20787-21apt-get00:20:120
17259915119,27cyclictest18128-21apt-get00:05:240
17259915117,24cyclictest8490-21tr23:05:460
17259915117,112cyclictest3839-21apt-get22:40:030
17259915113,115cyclictest29982-21/usr/sbin/munin22:00:590
17259915111,115cyclictest18923-21/usr/sbin/munin00:10:570
17259915111,115cyclictest1547-21kworker/u2:722:45:150
1725991509,26cyclictest10221-21wc23:15:540
17259915029,20cyclictest0-21swapper22:50:550
17259915022,100cyclictest21928-21apt-get21:10:210
17259915015,111cyclictest10098-21munin-run20:00:040
17259915015,110cyclictest12382-21diskstats23:30:330
17259915014,111cyclictest28474-21/usr/sbin/munin21:50:290
17259915012,38cyclictest5223-21unixbench_singl19:26:050
17259914921,28cyclictest11475-21apt-get23:25:210
17259914917,106cyclictest2954-21/usr/sbin/munin19:16:030
17259914916,104cyclictest25947-21apt-get21:35:180
17259914911,60cyclictest13941-21apt-get23:40:140
17259914910,115cyclictest2830-21cut22:30:580
1725991489,117cyclictest112-21systemd-journal20:35:300
17259914821,99cyclictest1543-21apt-get22:25:190
17259914819,28cyclictest9109-21df_inode23:10:320
17259914818,103cyclictest14473-21apt-get20:25:170
17259914817,107cyclictest7109-21df19:40:340
17259914814,25cyclictest11361-21diskstats20:05:390
17259914813,113cyclictest18145-21sort20:45:490
17259914813,110cyclictest21990-21ps00:25:560
17259914812,29cyclictest9255-21/usr/sbin/munin19:51:040
17259914811,113cyclictest15830-21sort20:31:030
17259914718,105cyclictest20509-21irqstats21:00:420
17259914714,22cyclictest18713-21apt-get20:50:150
17259914714,21cyclictest23417-21cat00:35:440
17259914714,109cyclictest8104-21latency_hist23:05:030
17259914621,99cyclictest31686-21diskstats22:10:330
17259914615,38cyclictest31434-21users22:06:050
17259914615,109cyclictest7290-21munin-run23:00:030
17259914513,24cyclictest1402-21users22:21:090
17259914513,22cyclictest25418-21sort21:30:460
17259914412,111cyclictest14920-21apt-get23:45:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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