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2025-07-01 - 05:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
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 rack3slot6s.osadl.org (updated Tue Jul 01, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22383211695,16sleep10-21swapper/119:06:231
22314211087,18sleep00-21swapper/019:05:300
22384210687,13sleep20-21swapper/219:06:242
22438210392,6sleep30-21swapper/319:07:053
160442770,0sleep00-21swapper/021:51:150
290932710,1sleep229-21rcuc/221:31:592
232412710,1sleep20-21swapper/220:30:162
155382680,0sleep20-21swapper/222:56:252
192132420,1sleep2301ktimersoftd/221:55:162
25532260,1sleep20-21swapper/200:23:592
2269399260,2cyclictest0-21swapper/020:35:120
308822250,1sleep3381ktimersoftd/319:30:003
2269399250,2cyclictest0-21swapper/020:55:120
2269599240,22cyclictest12-21rcu_preempt22:10:162
213202240,1sleep20-21swapper/200:10:102
2269399231,20cyclictest0-21swapper/023:00:180
2269399230,3cyclictest6510-21diskmemload21:28:390
2269399230,3cyclictest0-21swapper/022:30:220
2269399230,21cyclictest0-21swapper/023:25:270
2269399220,3cyclictest9403-21ssh22:17:470
2269399220,3cyclictest6510-21diskmemload22:51:060
2269399220,3cyclictest28599-21sh22:37:020
2269399220,3cyclictest18874-21ssh00:06:540
2269399220,3cyclictest10762-21munin-node0
2269399220,3cyclictest0-21swapper/023:35:260
2269399220,3cyclictest0-21swapper/022:55:260
2269399220,3cyclictest0-21swapper/022:42:430
2269399220,3cyclictest0-21swapper/021:56:380
2269399220,3cyclictest0-21swapper/021:42:300
2269399220,3cyclictest0-21swapper/021:23:180
2269399220,13cyclictest0-21swapper/000:23:090
22695992118,2cyclictest0-21swapper/221:50:132
22693992110,9cyclictest1388-21awk19:35:240
2269399210,3cyclictest4244-21ssh22:12:380
2269399210,3cyclictest13765-21ssh22:21:540
2269399210,2cyclictest5723-21ssh22:46:260
2269399210,2cyclictest14709-21ssh00:00:590
2269399210,2cyclictest0-21swapper/023:47:210
2269399210,2cyclictest0-21swapper/023:43:150
2269399210,2cyclictest0-21swapper/023:21:380
2269399210,2cyclictest0-21swapper/023:18:060
2269399210,2cyclictest0-21swapper/023:13:180
2269399210,2cyclictest0-21swapper/022:25:380
2269399210,2cyclictest0-21swapper/022:07:400
2269399210,2cyclictest0-21swapper/022:03:100
2269399210,2cyclictest0-21swapper/021:30:090
2269399210,2cyclictest0-21swapper/019:40:190
2269399210,2cyclictest0-21swapper/000:39:460
2269399210,2cyclictest0-21swapper/000:34:500
2269399210,2cyclictest0-21swapper/000:25:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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