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2025-11-15 - 08:06

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 Sat Nov 15, 2025 00:48:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173333299294144,87cyclictest0-21swapper/000:16:270
173333299285168,80cyclictest0-21swapper/022:30:400
173333299285168,80cyclictest0-21swapper/022:30:400
173333299278171,54cyclictest171rcu_preempt00:31:200
173333299278171,54cyclictest171rcu_preempt00:31:190
173333299273135,89cyclictest0-21swapper/019:41:480
173333299269114,103cyclictest0-21swapper/021:21:460
173333299261160,82cyclictest1739707-21/usr/sbin/munin19:46:560
173333299261160,52cyclictest171rcu_preempt00:26:050
173333299261160,52cyclictest171rcu_preempt00:26:040
173333299260178,69cyclictest0-21swapper/023:48:340
173333299260178,69cyclictest0-21swapper/023:48:340
173333299260126,116cyclictest0-21swapper/021:25:420
173333299255132,104cyclictest1758269-21kworker/u9:0+rpciod22:35:370
173333299255130,106cyclictest0-21swapper/022:20:090
173333299253141,75cyclictest1752489-21users21:02:040
173333299253137,100cyclictest0-21swapper/022:55:500
173333299253137,100cyclictest0-21swapper/022:55:500
173333299253136,103cyclictest0-21swapper/000:22:000
173333299253136,103cyclictest0-21swapper/000:22:000
173333299253136,102cyclictest1786293-21ps23:42:030
173333299253136,102cyclictest1786293-21ps23:42:030
173333299253134,102cyclictest0-21swapper/023:05:350
173333299252132,103cyclictest0-21swapper/023:16:080
173333299252132,103cyclictest0-21swapper/023:16:080
173333299250167,41cyclictest0-21swapper/023:56:380
173333299250167,41cyclictest0-21swapper/023:56:380
173333299250148,85cyclictest0-21swapper/021:46:050
173333299250148,85cyclictest0-21swapper/021:46:050
173333299250126,109cyclictest1737235-21processes19:31:550
173333299249111,96cyclictest1755003-21ssh21:16:360
173333299248150,84cyclictest1788018-21ssh23:50:270
173333299248140,59cyclictest1747897-21ntpq20:35:560
173333299248134,97cyclictest0-21swapper/022:05:460
173333299248134,97cyclictest0-21swapper/022:05:460
173333299247141,88cyclictest0-21swapper/020:01:590
173333299247141,88cyclictest0-21swapper/020:01:590
173333299247135,95cyclictest0-21swapper/020:20:380
173333299247127,106cyclictest1734098-21grep19:12:010
173333299246175,21cyclictest211rcuc/020:50:400
173333299246145,86cyclictest1742864-21kernelversion20:05:530
173333299246145,86cyclictest1742864-21kernelversion20:05:530
173333299246135,95cyclictest0-21swapper/021:10:550
173333299246135,95cyclictest0-21swapper/021:10:550
173333299245138,87cyclictest1781228-21kworker/u9:2+xprtiod00:08:270
173333299245138,87cyclictest1781228-21kworker/u9:2+xprtiod00:08:260
173333299245138,60cyclictest1774313-21/usr/sbin/munin22:46:160
173333299245138,60cyclictest1774313-21/usr/sbin/munin22:46:150
173333299245131,60cyclictest1746953-21df_inode20:30:370
173333299244127,85cyclictest1781696-21/usr/sbin/munin23:20:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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