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2026-05-08 - 02:28

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 100 highest latencies:
System rack3slot6s.osadl.org (updated Fri May 08, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2157211795,16sleep00-21swapper/019:07:060
1623211295,12sleep20-21swapper/219:05:362
1663210588,12sleep10-21swapper/119:05:551
571210485,12sleep30-21swapper/319:05:053
147292780,0sleep10-21swapper/100:00:211
327492750,0sleep20-21swapper/220:25:122
241299360,18cyclictest0-21swapper/121:15:101
241499341,15cyclictest22999-21sh21:15:103
109382340,0sleep20-21swapper/223:56:052
241499330,2cyclictest0-21swapper/321:50:123
241299320,18cyclictest0-21swapper/121:35:111
2412993114,15cyclictest0-21swapper/121:20:101
85412290,0sleep30-21swapper/320:45:123
241199280,26cyclictest0-21swapper/019:30:110
56822230,1sleep2301ktimersoftd/221:30:392
241199220,20cyclictest0-21swapper/019:50:110
2412992110,2cyclictest27576-21apt-get23:40:111
2412992110,2cyclictest27576-21apt-get23:40:111
241499200,2cyclictest0-21swapper/321:35:113
2412992011,2cyclictest0-21swapper/122:10:131
241299200,2cyclictest0-21swapper/100:25:111
247352190,1sleep124739-21aten2.4_r3power20:05:111
241399191,16cyclictest0-21swapper/221:44:042
241299191,10cyclictest18025-21diskmemload22:25:091
2413991815,2cyclictest6370-21kworker/u8:120:06:042
2413991815,2cyclictest30696-21kworker/u8:020:30:042
2413991815,2cyclictest27608-21kworker/u8:222:34:052
2413991815,2cyclictest2324-21kworker/u8:121:11:042
2413991815,2cyclictest20122-21kworker/u8:022:07:042
2413991815,2cyclictest13055-21kworker/u8:219:55:042
2413991815,2cyclictest11951-21kworker/u8:222:53:042
2413991815,2cyclictest10179-21kworker/u8:221:39:042
241399181,2cyclictest20122-21kworker/u8:022:02:042
241199180,13cyclictest0-21swapper/022:47:040
241199180,13cyclictest0-21swapper/022:22:010
168702180,0sleep00-21swapper/023:28:100
63712170,1sleep10-21swapper/121:31:061
241499171,3cyclictest0-21swapper/321:00:143
2414991712,3cyclictest14270-21hddtemp_smartct23:25:153
241399172,2cyclictest0-21swapper/220:56:012
2413991714,2cyclictest6370-21kworker/u8:120:10:042
2413991714,2cyclictest31292-21kworker/u8:023:54:052
2413991714,2cyclictest2324-21kworker/u8:121:23:042
2413991714,2cyclictest22204-21kworker/u8:021:26:042
2413991714,2cyclictest20122-21kworker/u8:021:58:052
2413991714,2cyclictest13055-21kworker/u8:219:48:042
241299172,6cyclictest0-21swapper/119:40:001
241499161,13cyclictest8626-21apt-get19:25:063
2413991613,2cyclictest8914-21kworker/u8:122:29:042
2413991613,2cyclictest6835-21kworker/u8:122:42:052
2413991613,2cyclictest6370-21kworker/u8:120:15:042
2413991613,2cyclictest6370-21kworker/u8:119:28:042
2413991613,2cyclictest29550-21kworker/u8:200:37:042
2413991613,2cyclictest29550-21kworker/u8:200:34:012
2413991613,2cyclictest16857-21kworker/u8:023:37:042
2413991613,2cyclictest16113-21kworker/u8:100:12:042
2413991613,2cyclictest13055-21kworker/u8:219:51:042
241399161,13cyclictest0-21swapper/219:40:112
2413991611,3cyclictest0-21swapper/219:25:002
241399160,14cyclictest0-21swapper/222:55:042
241399160,14cyclictest0-21swapper/222:14:012
241199160,6cyclictest0-21swapper/023:38:040
2414991510,3cyclictest0-21swapper/320:10:153
2413991512,2cyclictest31292-21kworker/u8:023:44:042
2413991512,2cyclictest31292-21kworker/u8:023:44:042
2413991512,2cyclictest2463-21kworker/u8:223:21:042
2413991512,2cyclictest2324-21kworker/u8:120:45:042
2413991512,2cyclictest13055-21kworker/u8:219:37:042
2413991512,2cyclictest10677-21kworker/u8:200:05:042
241399150,14cyclictest0-21swapper/222:37:042
241399150,14cyclictest0-21swapper/222:19:042
241399150,13cyclictest0-21swapper/223:30:122
241299151,12cyclictest22551-21apt-get23:00:051
241299151,12cyclictest22244-21sh23:34:251
2412991510,3cyclictest22680-21sh21:14:591
241299150,14cyclictest0-21swapper/100:24:191
241199151,12cyclictest31029-21ssh21:23:530
241199150,14cyclictest0-21swapper/023:48:590
241199150,13cyclictest0-21swapper/021:55:280
241199150,13cyclictest0-21swapper/000:29:240
241199150,10cyclictest0-21swapper/022:36:040
112202150,0sleep00-21swapper/023:56:270
241499142,7cyclictest0-21swapper/320:20:003
241499142,7cyclictest0-21swapper/320:00:003
2414991410,2cyclictest31292-21kworker/u8:023:57:453
241499140,13cyclictest0-21swapper/323:38:253
2413991411,2cyclictest31175-21kworker/u8:219:11:042
2413991411,2cyclictest29550-21kworker/u8:200:29:042
2413991411,2cyclictest16857-21kworker/u8:023:17:042
2413991411,2cyclictest14588-21kworker/u8:221:09:042
241399141,11cyclictest0-21swapper/223:00:112
241399140,2cyclictest0-21swapper/223:13:032
241399140,2cyclictest0-21swapper/223:07:042
241399140,12cyclictest23710-21ssh21:15:162
241299141,3cyclictest0-21swapper/122:15:161
2412991411,2cyclictest0-21swapper/122:38:591
2412991411,2cyclictest0-21swapper/121:52:191
2412991410,2cyclictest0-21swapper/119:31:011
241299140,13cyclictest0-21swapper/123:09:191
241299140,12cyclictest30196-21sh00:17:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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