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2025-12-24 - 14:42

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 Wed Dec 24, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32291224142184,85sleep00-21swapper07:09:250
324019917418,125cyclictest2746-21apt-get10:40:190
324019917218,26cyclictest5471-21apt-get07:40:310
324019917018,30cyclictest3764-21irqstats07:30:390
324019916915,25cyclictest20326-21head09:06:010
324019916037,22cyclictest29606-21missed_timers10:05:450
324019916016,114cyclictest27720-21apt-get09:55:190
324019915713,120cyclictest13517-21memory08:26:190
324019915617,113cyclictest6063-21diskstats11:00:360
324019915614,117cyclictest15906-21df12:00:270
32401991559,123cyclictest11145-21latency_hist08:15:050
324019915518,97cyclictest25220-21munin-run09:40:020
32401991549,120cyclictest8334-21apt-get11:15:200
324019915440,23cyclictest11049-21/usr/sbin/munin11:30:320
324019915428,106cyclictest0-21swapper10:00:500
324019915413,119cyclictest9642-21apt-get08:05:190
324019915413,101cyclictest12171-21modprobe08:20:030
324019915412,120cyclictest109-21systemd-journal10:40:010
324019915412,119cyclictest9709-21cat11:21:000
324019915410,118cyclictest468-21ps10:25:520
32401991539,121cyclictest21227-21sed12:31:030
324019915379,52cyclictest6441-21apt-get07:45:230
324019915317,113cyclictest4331-21apt-get10:50:190
324019915316,23cyclictest4284-21apt-get07:36:560
324019915316,23cyclictest1021-21diskstats07:15:190
324019915316,110cyclictest14104-21apt-get08:30:410
324019915219,29cyclictest2246-21memory07:20:480
324019915216,22cyclictest15715-21apt-get08:40:140
324019915215,113cyclictest17394-21apt-get12:10:190
324019915213,96cyclictest9859-21apt-get11:25:400
324019915211,102cyclictest18879-21cron12:20:000
32401991519,119cyclictest32431-21sshd10:21:190
324019915138,23cyclictest16862-21proc_pri08:45:530
324019915120,27cyclictest27037-21diskstats09:50:340
324019915116,23cyclictest21506-21df_inode12:35:290
324019915116,113cyclictest793-21apt-get10:31:040
324019915112,115cyclictest30927-21apt-get10:15:190
324019915111,38cyclictest9604-21cat08:05:050
324019915029,20cyclictest22135-21apt-get09:20:210
324019915020,27cyclictest13395-21apt-get11:45:230
324019915019,102cyclictest24092-21munin-node07:15:030
324019915018,109cyclictest12710-21diskstats11:40:300
324019915016,23cyclictest20055-21memory12:25:440
324019915015,108cyclictest5129-21apt-get10:55:200
324019915012,97cyclictest8728-21munin-run08:00:020
324019915011,27cyclictest18566-21mailstats08:56:010
324019915011,114cyclictest15679-21apt12:00:000
32401991499,46cyclictest19557-21grep09:01:040
324019914917,26cyclictest23103-21irqstats09:25:390
324019914917,26cyclictest14894-21apt-get08:35:160
324019914915,19cyclictest16599-21apt-get12:05:190
324019914820,27cyclictest30130-21apt-get10:10:220
324019914819,103cyclictest12092-21ntp_states11:35:530
324019914813,113cyclictest109-21systemd-journal09:20:010
324019914727,21cyclictest0-21swapper09:40:240
324019914713,103cyclictest845-21munin-node09:30:130
324019914619,22cyclictest12941-21users08:21:110
324019914617,104cyclictest7232-21apt-get07:50:190
324019914614,106cyclictest2799-21apt-get07:25:170
324019914610,37cyclictest17791-21cut08:50:580
324019914534,19cyclictest0-21swapper11:50:320
324019914510,25cyclictest7305-21timerandwakeup11:06:000
324019914415,24cyclictest7652-21diskstats11:10:350
324019914414,26cyclictest6750irq/45-2188000.09:46:070
324019914412,109cyclictest20505-21/usr/sbin/munin09:10:480
324019914412,108cyclictest4090-21timerandwakeup10:45:590
324019914317,25cyclictest19119-21df12:20:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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