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2025-11-21 - 10:12

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 Nov 21, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1516211793,19sleep00-21swapper/019:05:560
1773211599,11sleep10-21swapper/119:09:131
1548210797,6sleep20-21swapper/219:06:222
1544210796,6sleep30-21swapper/319:06:183
117322750,0sleep00-21swapper/023:52:450
21542740,2sleep2186699cyclictest23:09:262
29892710,0sleep00-21swapper/019:10:190
166802680,1sleep20-21swapper/200:31:392
300222510,0sleep10-21swapper/121:55:251
86842270,0sleep30-21swapper/322:40:523
86842270,0sleep30-21swapper/322:40:513
278422240,1sleep30-21swapper/322:27:343
186599220,20cyclictest0-21swapper/123:30:121
1865992118,2cyclictest16433-21kworker/u8:220:12:041
186599210,4cyclictest0-21swapper/120:16:031
153002210,0sleep10-21swapper/122:48:561
1866992017,2cyclictest24359-21kworker/u8:022:28:052
1866992017,2cyclictest16646-21kworker/u8:000:24:042
186599203,2cyclictest0-21swapper/119:39:041
186599202,2cyclictest0-21swapper/121:04:041
1865992017,2cyclictest8436-21kworker/u8:120:58:011
1865992017,2cyclictest2074-21kworker/u8:120:38:011
1865992017,2cyclictest19238-21kworker/u8:323:26:061
186599201,2cyclictest0-21swapper/120:21:041
186599201,2cyclictest0-21swapper/119:58:041
186599201,2cyclictest0-21swapper/119:58:041
186599201,2cyclictest0-21swapper/119:31:041
186599201,13cyclictest0-21swapper/119:16:011
186599200,4cyclictest0-21swapper/122:00:041
186599200,4cyclictest0-21swapper/121:17:041
186599200,3cyclictest0-21swapper/122:44:011
186599200,3cyclictest0-21swapper/122:44:011
1864992017,2cyclictest26726-21kworker/u8:121:42:040
186699192,2cyclictest0-21swapper/200:06:022
1866991916,2cyclictest26948-21kworker/u8:023:39:052
1866991916,2cyclictest16433-21kworker/u8:219:56:042
1866991916,2cyclictest16433-21kworker/u8:219:56:032
186699191,17cyclictest0-21swapper/222:01:042
186699191,12cyclictest0-21swapper/223:19:042
186599193,2cyclictest0-21swapper/121:43:041
1865991916,2cyclictest6014-21kworker/u8:220:42:001
1865991916,2cyclictest5189-21kworker/u8:221:34:051
1865991916,2cyclictest30465-21kworker/u8:020:47:041
1865991916,2cyclictest30465-21kworker/u8:020:29:041
1865991916,2cyclictest16439-21kworker/u8:222:55:041
1865991916,2cyclictest13633-21kworker/u8:200:32:061
1865991916,2cyclictest11787-21kworker/u8:221:08:001
1865991916,2cyclictest11787-21kworker/u8:220:53:041
1865991916,2cyclictest10048-21kworker/u8:022:50:041
1865991916,2cyclictest10048-21kworker/u8:022:50:031
186599190,3cyclictest0-21swapper/123:04:011
1864991916,2cyclictest18107-21kworker/u8:122:18:040
186699181,2cyclictest0-21swapper/221:20:052
186699180,4cyclictest0-21swapper/220:04:042
186699180,2cyclictest0-21swapper/219:22:042
1865991815,2cyclictest32728-21kworker/u8:022:06:001
1865991815,2cyclictest30768-21kworker/u8:122:32:041
1865991815,2cyclictest27909-21kworker/u8:100:27:051
1865991815,2cyclictest19128-21kworker/u8:219:25:041
1865991815,2cyclictest16646-21kworker/u8:000:06:061
1865991815,2cyclictest12458-21kworker/u8:020:01:041
1864991815,2cyclictest1929-21kworker/u8:322:37:050
1864991815,2cyclictest13633-21kworker/u8:200:34:060
157682180,0sleep30-21swapper/319:40:233
186799172,13cyclictest39-21ksoftirqd/319:25:123
186799170,14cyclictest0-21swapper/320:40:153
186699172,2cyclictest0-21swapper/222:21:042
1866991714,2cyclictest5974-21kworker/u8:222:30:052
1866991714,2cyclictest27909-21kworker/u8:100:26:042
186699171,13cyclictest0-21swapper/222:47:052
186699170,2cyclictest0-21swapper/220:46:042
1865991714,2cyclictest5974-21kworker/u8:222:11:041
1865991714,2cyclictest5105-21kworker/u8:123:12:041
1865991714,2cyclictest24359-21kworker/u8:022:27:041
1865991714,2cyclictest2074-21kworker/u8:120:33:041
1865991714,2cyclictest1929-21kworker/u8:322:38:041
1865991714,2cyclictest18919-21kworker/u8:123:45:031
1865991714,2cyclictest18107-21kworker/u8:122:22:041
1865991714,2cyclictest18107-21kworker/u8:122:19:041
1865991714,2cyclictest11787-21kworker/u8:221:14:041
1865991714,2cyclictest11135-21kworker/u8:100:02:041
186599170,12cyclictest0-21swapper/100:35:531
1864991714,2cyclictest30727-21kworker/u8:223:19:040
1864991714,2cyclictest26726-21kworker/u8:121:57:030
1864991714,2cyclictest24359-21kworker/u8:022:29:040
1864991714,2cyclictest19128-21kworker/u8:219:22:040
1864991714,2cyclictest16646-21kworker/u8:000:06:020
186799161,13cyclictest0-21swapper/322:05:123
186699162,2cyclictest0-21swapper/222:37:052
1866991613,2cyclictest5189-21kworker/u8:221:40:042
1866991613,2cyclictest18416-21kworker/u8:021:15:032
186699161,2cyclictest0-21swapper/221:33:042
186699161,2cyclictest0-21swapper/200:16:042
186699161,10cyclictest0-21swapper/223:14:042
186699160,2cyclictest18157-21diskmemload23:43:052
186699160,2cyclictest0-21swapper/221:29:042
186699160,14cyclictest20746-21seq23:28:272
1865991613,2cyclictest5189-21kworker/u8:221:35:041
1865991613,2cyclictest27909-21kworker/u8:100:17:051
1865991613,2cyclictest26726-21kworker/u8:121:27:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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