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2025-07-13 - 11:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #2

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack7slot2s.osadl.org (updated Sun Jul 13, 2025 00:48:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49989599292127,88cyclictest549839-21kworker/u9:3+rpciod00:30:350
49989599291188,56cyclictest171rcu_preempt00:35:540
49989599291188,56cyclictest171rcu_preempt00:35:530
49989599290199,59cyclictest171rcu_preempt23:02:090
49989599290199,59cyclictest171rcu_preempt23:02:080
49989599290126,77cyclictest507600-21/usr/sbin/munin19:56:570
49989599287160,89cyclictest0-21swapper/022:50:260
49989599280190,55cyclictest171rcu_preempt00:27:350
49989599280190,55cyclictest171rcu_preempt00:27:340
49989599278193,56cyclictest171rcu_preempt22:46:020
49989599278193,56cyclictest171rcu_preempt22:46:020
49989599277189,58cyclictest171rcu_preempt21:27:020
49989599275187,58cyclictest171rcu_preempt00:11:130
49989599275187,55cyclictest171rcu_preempt20:21:030
49989599275187,55cyclictest171rcu_preempt20:21:030
49989599275175,69cyclictest505742-21latency_hist19:45:000
49989599274189,57cyclictest171rcu_preempt21:02:080
49989599274189,57cyclictest171rcu_preempt21:02:070
49989599273178,70cyclictest516567-21kworker/u9:5+rpciod21:06:570
49989599272203,51cyclictest527776-21irqstats21:45:440
49989599272172,69cyclictest545602-21ssh23:09:410
49989599272172,69cyclictest545602-21ssh23:09:410
49989599271206,51cyclictest513450-21/usr/sbin/munin20:31:570
49989599271200,53cyclictest551272-21df23:35:360
49989599271181,59cyclictest171rcu_preempt22:31:250
49989599271181,59cyclictest171rcu_preempt22:31:250
49989599271172,56cyclictest171rcu_preempt23:16:510
49989599270141,111cyclictest0-21swapper/021:40:070
49989599269200,53cyclictest530244-21/usr/sbin/munin21:57:050
49989599269200,53cyclictest530244-21/usr/sbin/munin21:57:040
49989599269200,52cyclictest508453-21/usr/sbin/munin20:01:330
49989599269200,52cyclictest508453-21/usr/sbin/munin20:01:320
49989599269167,70cyclictest391-21cron22:44:010
49989599268215,38cyclictest0-21swapper/021:43:100
49989599268215,38cyclictest0-21swapper/021:43:100
49989599268214,39cyclictest0-21swapper/000:00:070
49989599268200,53cyclictest521949-21ssh21:17:390
49989599268200,53cyclictest521949-21ssh21:17:390
49989599268182,58cyclictest171rcu_preempt23:46:210
49989599268182,58cyclictest171rcu_preempt23:46:200
49989599268182,52cyclictest171rcu_preempt22:01:300
49989599268157,76cyclictest554420-21ssh23:50:210
49989599268157,76cyclictest554420-21ssh23:50:210
49989599267200,53cyclictest528770-21df21:50:380
49989599267200,53cyclictest528770-21df21:50:370
49989599267193,58cyclictest516568-21kworker/u9:6+xprtiod20:51:180
49989599267193,58cyclictest516568-21kworker/u9:6+xprtiod20:51:170
49989599267177,56cyclictest171rcu_preempt22:21:110
49989599267177,56cyclictest171rcu_preempt22:21:110
49989599266194,56cyclictest484949-21kworker/u10:3+rpciod19:52:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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