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2025-08-30 - 00:47

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 Fri Aug 29, 2025 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227152119108,6sleep10-21swapper/107:08:091
22556210897,6sleep20-21swapper/207:06:052
22083210883,18sleep00-21swapper/007:05:230
22795210796,6sleep30-21swapper/307:09:113
440621050,1sleep24405-21ssh11:50:572
120152750,0sleep00-21swapper/009:47:060
158142700,0sleep00-21swapper/010:56:400
301762690,0sleep00-21swapper/012:17:420
228862650,1sleep30-21swapper/311:37:043
22894995417,19cyclictest0-21swapper/312:35:143
22892993415,2cyclictest0-21swapper/110:30:121
22892993015,13cyclictest0-21swapper/112:00:121
2289399288,18cyclictest29-21rcuc/210:40:112
2289399241,18cyclictest0-21swapper/207:38:042
306222220,1sleep30-21swapper/308:45:243
2289299220,20cyclictest0-21swapper/109:45:131
2289399212,2cyclictest0-21swapper/211:18:052
2289399212,17cyclictest29-21rcuc/211:24:022
22893992118,2cyclictest5210-21kworker/u8:209:07:052
22893992118,2cyclictest31814-21kworker/u8:007:33:052
2289399210,16cyclictest0-21swapper/212:35:052
2289299211,2cyclictest0-21swapper/110:05:151
2289199211,2cyclictest0-21swapper/010:00:130
22894992017,2cyclictest25170-21kworker/u8:011:15:043
22894992017,2cyclictest25170-21kworker/u8:011:06:053
22894992017,2cyclictest15106-21kworker/u8:112:14:053
22894992015,3cyclictest4356-21ssh09:40:153
2289399203,2cyclictest31-21ksoftirqd/212:31:042
2289399202,2cyclictest0-21swapper/209:35:052
22893992017,2cyclictest20626-21kworker/u8:207:11:042
2289399201,18cyclictest0-21swapper/208:08:052
2289199200,18cyclictest512-21rm11:15:130
2289199200,18cyclictest0-21swapper/011:00:130
22893991916,2cyclictest20451-21kworker/u8:012:16:042
2289399191,2cyclictest0-21swapper/212:28:062
2289399191,2cyclictest0-21swapper/209:44:042
2289399191,2cyclictest0-21swapper/207:18:052
2289399190,2cyclictest0-21swapper/211:47:052
2289399190,2cyclictest0-21swapper/210:52:012
2289399190,2cyclictest0-21swapper/209:50:042
2289399190,2cyclictest0-21swapper/208:27:042
2289399190,2cyclictest0-21swapper/208:14:042
2289399190,15cyclictest0-21swapper/210:01:042
22892991915,2cyclictest0-21swapper/110:20:141
22894991815,2cyclictest25221-21kworker/u8:010:38:063
22894991815,2cyclictest19960-21kworker/u8:311:02:043
22894991815,2cyclictest16099-21kworker/u8:209:30:053
2289399180,2cyclictest0-21swapper/212:21:042
2289399180,2cyclictest0-21swapper/209:12:052
2289399180,2cyclictest0-21swapper/207:56:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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