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2026-08-12 - 20:57

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 Aug 12, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26332224572223,88sleep00-21swapper07:08:070
265899916618,107cyclictest15476-21apt-get09:16:370
265899916430,23cyclictest11929-21latency_hist12:10:080
265899916123,29cyclictest18301-21apt-get09:30:330
265899915940,100cyclictest744-21/usr/sbin/munin07:45:240
265899915934,105cyclictest27383-21munin-run07:15:010
265899915917,25cyclictest12974-21apt09:00:110
265899915814,121cyclictest15630-21memory12:30:460
265899915731,23cyclictest11836-21apt-get12:11:290
265899915711,24cyclictest27492-21munin-node10:50:120
265899915616,101cyclictest354-21munin-run11:00:020
265899915517,111cyclictest12040-21munin-run08:55:020
265899915510,62cyclictest11220-21awk08:46:060
265899915417,21cyclictest3164-21apt-get08:00:280
265899915416,22cyclictest30191-21munin-run07:30:040
265899915413,27cyclictest14663-21sshd09:07:450
265899915413,117cyclictest7767-21fgrep08:25:580
265899915411,119cyclictest28692-21wc10:31:010
265899915318,111cyclictest10451-21munin-run08:45:010
265899915317,109cyclictest13798-21apt-get12:20:180
265899915316,23cyclictest5813-21df08:15:280
265899915315,22cyclictest6156-21apt-get11:35:270
265899915312,115cyclictest19889-21sed09:36:100
265899915310,102cyclictest15208-21sendmail_mailqu09:10:550
26589991529,28cyclictest2019-21grep11:10:040
265899915227,16cyclictest0-21swapper07:40:490
265899915218,37cyclictest31628-21diskstats07:36:070
265899915218,27cyclictest21787-21diskstats09:50:340
265899915217,109cyclictest10227-21munin-run12:00:020
265899915215,25cyclictest30193-1kworker/u3:307:31:500
265899915215,114cyclictest13138-21irqstats12:15:450
265899915215,112cyclictest16882-21snmpd12:40:020
265899915214,114cyclictest3157-21awk11:15:470
265899915213,117cyclictest12655-21sort08:56:000
265899915212,39cyclictest14900-21ntpq12:25:490
265899915212,118cyclictest28534-21munin-run07:20:020
265899915212,116cyclictest2976-21munin-run08:00:020
265899915210,26cyclictest26395-21sh10:20:010
265899915115,24cyclictest8991-21cat11:50:470
265899915114,22cyclictest31205-21sshd10:49:050
265899915113,111cyclictest7934-21/usr/sbin/munin11:45:230
265899915018,30cyclictest10460-21diskstats12:00:350
265899915017,105cyclictest17439-21apt-get09:25:180
265899915013,117cyclictest27559-21memory10:25:440
265899915011,39cyclictest24396-21awk10:05:510
265899915011,115cyclictest9184-21ls08:35:450
265899914920,29cyclictest2314-21memory11:10:440
265899914916,23cyclictest6718-21irqstats08:20:410
265899914914,96cyclictest5612-21apt08:15:000
265899914913,28cyclictest27492-21munin-node11:20:120
265899914911,23cyclictest20509-21fgrep09:40:570
265899914910,48cyclictest23293-21/usr/sbin/munin10:00:420
265899914819,28cyclictest16644-21apt-get09:20:280
265899914813,113cyclictest25109-21wc10:10:400
265899914812,40cyclictest30103-21grep10:40:540
265899914812,112cyclictest5982-21latency_hist11:35:020
265899914716,23cyclictest7573-21/usr/sbin/munin11:41:030
265899914713,110cyclictest8136-21apt-get08:30:200
26589991467,116cyclictest16882-21snmpd11:26:030
265899914615,104cyclictest483-21apt-get11:00:180
265899914610,109cyclictest29063-21processes07:20:560
265899914521,24cyclictest4439-21ntp_states08:05:570
265899914517,104cyclictest21054-21irqstats09:45:390
265899914419,98cyclictest26520-21apt-get10:20:230
265899914417,26cyclictest29016-21df_inode10:35:290
265899914416,28cyclictest23162-21modprobe10:00:010
26589991439,25cyclictest2161-21cron07:55:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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