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2026-09-19 - 22:54

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 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 highest latencies:
System rack3slot6s.osadl.org (updated Sat Sep 19, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66992119107,6sleep30-21swapper/307:05:203
7353210796,6sleep20-21swapper/207:07:242
7298210678,22sleep00-21swapper/007:06:410
7304210281,15sleep10-21swapper/107:06:461
105112730,1sleep30-21swapper/307:15:163
244612700,0sleep00-21swapper/007:50:150
102152690,0sleep30-21swapper/310:03:223
7584993330,2cyclictest10537-21kworker/u8:210:29:041
7586993229,2cyclictest28274-21kworker/u8:110:45:053
7586993229,2cyclictest17630-21kworker/u8:112:04:023
7586993229,2cyclictest10947-21kworker/u8:209:40:053
7586993229,2cyclictest10947-21kworker/u8:209:39:043
7585993229,2cyclictest28274-21kworker/u8:110:27:042
7586993128,2cyclictest897-21kworker/u8:111:20:063
7586993128,2cyclictest6120-21kworker/u8:011:18:053
7586993128,2cyclictest17630-21kworker/u8:111:58:053
7585993128,2cyclictest9087-21kworker/u8:209:24:052
7585993128,2cyclictest6120-21kworker/u8:011:19:042
7585993128,2cyclictest17682-21kworker/u8:211:22:042
7585993127,3cyclictest10537-21kworker/u8:210:18:042
7584993128,2cyclictest29654-21kworker/u8:212:38:041
7586993027,2cyclictest5281-21kworker/u8:009:59:053
7586993027,2cyclictest24427-21kworker/u8:009:17:043
7586993027,2cyclictest22894-21kworker/u8:110:10:053
7586993027,2cyclictest10537-21kworker/u8:210:19:043
7585993027,2cyclictest5894-21kworker/u8:109:29:042
7585993027,2cyclictest28274-21kworker/u8:110:35:042
7585993027,2cyclictest24427-21kworker/u8:009:16:042
7585993027,2cyclictest17682-21kworker/u8:211:29:042
7585993027,2cyclictest14645-21kworker/u8:010:58:052
7584993027,2cyclictest9087-21kworker/u8:209:23:051
7584993027,2cyclictest24427-21kworker/u8:009:34:051
7584993026,3cyclictest11046-21kworker/u8:012:23:041
7586992926,2cyclictest29654-21kworker/u8:212:08:043
7586992926,2cyclictest28274-21kworker/u8:110:32:053
7586992926,2cyclictest14645-21kworker/u8:010:50:053
7586992926,2cyclictest11046-21kworker/u8:012:39:053
7585992926,2cyclictest29654-21kworker/u8:212:10:012
7585992926,2cyclictest28274-21kworker/u8:110:44:012
7585992926,2cyclictest22894-21kworker/u8:110:03:042
7585992926,2cyclictest22894-21kworker/u8:109:43:042
7585992926,2cyclictest17056-21kworker/u8:010:13:042
7585992926,2cyclictest11046-21kworker/u8:012:22:042
7584992926,2cyclictest24427-21kworker/u8:009:47:051
7584992926,2cyclictest17630-21kworker/u8:112:04:061
7586992825,2cyclictest9087-21kworker/u8:209:20:043
7586992825,2cyclictest22894-21kworker/u8:110:08:053
7586992825,2cyclictest14645-21kworker/u8:011:01:043
7586992825,2cyclictest10938-21kworker/u8:011:50:053
7586992824,3cyclictest897-21kworker/u8:111:42:043
7585992825,2cyclictest6120-21kworker/u8:011:12:052
7585992825,2cyclictest31889-21kworker/u8:209:55:052
7585992825,2cyclictest29654-21kworker/u8:212:17:042
7585992825,2cyclictest17682-21kworker/u8:211:30:042
7585992825,2cyclictest11046-21kworker/u8:012:26:052
7584992825,2cyclictest27344-21kworker/u8:011:38:061
7584992825,2cyclictest24427-21kworker/u8:009:35:041
7584992825,2cyclictest19736-21kworker/u8:210:47:051
7583992825,2cyclictest28274-21kworker/u8:110:22:040
7586992724,2cyclictest6120-21kworker/u8:011:13:053
7586992724,2cyclictest29654-21kworker/u8:212:32:043
7586992724,2cyclictest29654-21kworker/u8:212:28:053
7586992724,2cyclictest28274-21kworker/u8:110:39:043
7586992724,2cyclictest10938-21kworker/u8:011:48:053
7586992724,2cyclictest10537-21kworker/u8:210:28:043
7585992724,2cyclictest29654-21kworker/u8:212:36:052
7585992724,2cyclictest24427-21kworker/u8:009:31:052
7585992724,2cyclictest17630-21kworker/u8:111:55:042
7585992724,2cyclictest14645-21kworker/u8:010:50:012
7585992724,2cyclictest10947-21kworker/u8:209:37:042
7585992724,2cyclictest10938-21kworker/u8:011:54:012
7584992724,2cyclictest6120-21kworker/u8:011:10:051
7584992724,2cyclictest6120-21kworker/u8:011:07:041
7584992724,2cyclictest28274-21kworker/u8:110:38:051
7584992724,2cyclictest28274-21kworker/u8:110:31:041
7584992724,2cyclictest17682-21kworker/u8:211:24:011
7583992724,2cyclictest14645-21kworker/u8:011:00:050
7586992623,2cyclictest7775-21kworker/u8:210:41:043
7586992623,2cyclictest29654-21kworker/u8:212:15:043
7586992623,2cyclictest27344-21kworker/u8:011:33:043
7586992623,2cyclictest2565-21kworker/u8:012:13:053
7586992623,2cyclictest24427-21kworker/u8:009:27:043
7586992623,2cyclictest14645-21kworker/u8:010:55:053
758699260,18cyclictest0-21swapper/309:34:053
7584992623,2cyclictest897-21kworker/u8:111:43:041
7584992623,2cyclictest29654-21kworker/u8:212:34:041
7584992623,2cyclictest29654-21kworker/u8:212:27:051
7584992623,2cyclictest29654-21kworker/u8:212:19:051
7584992623,2cyclictest29654-21kworker/u8:212:10:051
7584992623,2cyclictest28274-21kworker/u8:110:23:051
758499260,18cyclictest0-21swapper/109:40:041
7583992623,2cyclictest27344-21kworker/u8:011:39:040
7586992522,2cyclictest24427-21kworker/u8:009:50:043
7586992522,2cyclictest24427-21kworker/u8:009:46:013
7586992522,2cyclictest11046-21kworker/u8:012:24:043
7585992522,2cyclictest2604-21kworker/u8:010:30:042
7584992522,2cyclictest31889-21kworker/u8:209:56:051
7584992522,2cyclictest17630-21kworker/u8:111:59:041
7584992522,2cyclictest14645-21kworker/u8:010:53:041
7583992522,2cyclictest24427-21kworker/u8:009:33:040
7583992522,2cyclictest10537-21kworker/u8:210:16:040
7583992521,3cyclictest897-21kworker/u8:111:11:040
7586992421,2cyclictest24133-21kworker/u8:008:30:023
7586992421,2cyclictest15907-21kworker/u8:107:51:053
7586992421,2cyclictest15139-21kworker/u8:207:46:013
7585992421,2cyclictest31889-21kworker/u8:209:54:042
7585992421,2cyclictest10938-21kworker/u8:011:46:042
7584992421,2cyclictest5894-21kworker/u8:109:25:041
7584992421,2cyclictest10938-21kworker/u8:011:47:041
7583992421,2cyclictest29654-21kworker/u8:212:18:060
7583992421,2cyclictest14645-21kworker/u8:010:42:050
7586992320,2cyclictest7324-21kworker/u8:007:28:023
7586992320,2cyclictest7324-21kworker/u8:007:28:013
7586992320,2cyclictest28274-21kworker/u8:110:24:053
7586992320,2cyclictest27344-21kworker/u8:011:36:053
7586992320,2cyclictest15907-21kworker/u8:107:34:043
7586992320,2cyclictest15139-21kworker/u8:207:22:023
7585992320,2cyclictest29654-21kworker/u8:212:06:042
7584992320,2cyclictest24427-21kworker/u8:009:15:041
7584992320,2cyclictest24133-21kworker/u8:008:27:041
7584992320,2cyclictest17630-21kworker/u8:111:54:061
7584992320,2cyclictest10537-21kworker/u8:210:04:041
7583992320,2cyclictest22894-21kworker/u8:109:42:050
7583992320,2cyclictest14645-21kworker/u8:010:58:010
7583992320,2cyclictest11046-21kworker/u8:012:29:040
7586992219,2cyclictest24133-21kworker/u8:008:21:043
7586992219,2cyclictest15139-21kworker/u8:207:43:053
7585992219,2cyclictest7324-21kworker/u8:007:17:042
7585992219,2cyclictest24133-21kworker/u8:008:30:062
7585992219,2cyclictest24133-21kworker/u8:008:16:062
7585992219,2cyclictest15139-21kworker/u8:207:45:042
7585992219,2cyclictest15139-21kworker/u8:207:21:052
7584992219,2cyclictest9087-21kworker/u8:209:14:041
7584992219,2cyclictest17056-21kworker/u8:010:14:061
7583992219,2cyclictest31889-21kworker/u8:209:57:040
7583992219,2cyclictest22894-21kworker/u8:109:53:040
7586992118,2cyclictest9087-21kworker/u8:209:13:043
7586992118,2cyclictest9087-21kworker/u8:209:05:053
7586992118,2cyclictest15907-21kworker/u8:107:36:043
7585992118,2cyclictest897-21kworker/u8:111:41:042
7585992118,2cyclictest24133-21kworker/u8:008:25:042
7585992118,2cyclictest24133-21kworker/u8:007:50:052
7584992118,2cyclictest897-21kworker/u8:111:04:051
7584992118,2cyclictest7324-21kworker/u8:007:26:041
7584992118,2cyclictest7324-21kworker/u8:007:26:041
7584992118,2cyclictest7324-21kworker/u8:007:15:041
7584992118,2cyclictest7324-21kworker/u8:007:10:051
7584992118,2cyclictest15907-21kworker/u8:107:42:051
7583992118,2cyclictest28274-21kworker/u8:110:37:050
7583992118,2cyclictest17682-21kworker/u8:211:32:040
7583992118,2cyclictest17682-21kworker/u8:211:28:050
7583992118,2cyclictest11046-21kworker/u8:012:35:040
142352210,0sleep00-21swapper/010:07:120
7586992017,2cyclictest9087-21kworker/u8:209:03:043
7586992017,2cyclictest9087-21kworker/u8:208:42:053
7586992017,2cyclictest24133-21kworker/u8:008:18:053
7586992017,2cyclictest24133-21kworker/u8:008:01:043
758699200,2cyclictest0-21swapper/311:28:043
7585992017,2cyclictest31954-21kworker/u8:108:12:042
7585992017,2cyclictest24133-21kworker/u8:008:20:042
7585992017,2cyclictest15907-21kworker/u8:107:40:052
758599200,2cyclictest0-21swapper/212:34:042
758599200,2cyclictest0-21swapper/211:38:022
758599200,2cyclictest0-21swapper/211:05:042
758599200,2cyclictest0-21swapper/210:22:052
758599200,18cyclictest0-21swapper/211:00:042
7584992017,2cyclictest31954-21kworker/u8:108:54:041
758499200,2cyclictest0-21swapper/111:18:051
7583992017,2cyclictest10938-21kworker/u8:011:50:020
758399200,17cyclictest0-21swapper/010:27:040
7586991916,2cyclictest9087-21kworker/u8:208:57:043
7586991916,2cyclictest7324-21kworker/u8:007:13:043
758699190,2cyclictest0-21swapper/311:05:043
758699190,2cyclictest0-21swapper/308:46:043
758699190,10cyclictest0-21swapper/308:27:043
7585991916,2cyclictest9087-21kworker/u8:208:56:052
758599190,2cyclictest0-21swapper/212:00:052
758599190,2cyclictest0-21swapper/210:45:052
758599190,2cyclictest0-21swapper/209:46:062
758599190,2cyclictest0-21swapper/207:56:042
7584991916,2cyclictest9087-21kworker/u8:209:01:041
7584991916,2cyclictest9087-21kworker/u8:208:44:041
7584991916,2cyclictest31954-21kworker/u8:108:55:051
7584991916,2cyclictest31954-21kworker/u8:108:49:041
7584991916,2cyclictest26256-21kworker/u8:208:07:051
7584991916,2cyclictest24133-21kworker/u8:008:16:011
758499190,2cyclictest0-21swapper/112:08:041
758499190,2cyclictest0-21swapper/111:28:051
758499190,2cyclictest0-21swapper/110:55:041
758499190,2cyclictest0-21swapper/110:42:051
758499190,2cyclictest0-21swapper/110:19:041
758499190,2cyclictest0-21swapper/110:05:041
758499190,2cyclictest0-21swapper/109:50:041
758499190,17cyclictest0-21swapper/107:34:051
758499190,17cyclictest0-21swapper/107:22:021
7583991916,2cyclictest24427-21kworker/u8:009:46:060
758399190,2cyclictest23950-21diskmemload10:03:050
758399190,2cyclictest0-21swapper/012:22:040
758399190,2cyclictest0-21swapper/012:10:010
758399190,2cyclictest0-21swapper/011:19:040
758399190,2cyclictest0-21swapper/009:24:050
758399190,13cyclictest0-21swapper/009:29:040
7586991815,2cyclictest9087-21kworker/u8:208:39:043
7586991815,2cyclictest31954-21kworker/u8:108:51:053
758699180,2cyclictest0-21swapper/307:56:043
7585991815,2cyclictest9087-21kworker/u8:209:02:042
7585991815,2cyclictest9087-21kworker/u8:208:41:052
7585991815,2cyclictest15907-21kworker/u8:107:35:042
7585991815,2cyclictest15139-21kworker/u8:207:25:052
7585991815,2cyclictest15139-21kworker/u8:207:25:042
758599180,2cyclictest0-21swapper/208:46:042
7584991815,2cyclictest24133-21kworker/u8:008:23:051
758499180,2cyclictest7839-21copy08:30:021
758499180,2cyclictest0-21swapper/107:56:051
7583991815,2cyclictest24133-21kworker/u8:007:56:050
758399180,16cyclictest0-21swapper/011:55:040
7585991714,2cyclictest31954-21kworker/u8:108:50:012
7585991714,2cyclictest21844-21kworker/u8:109:06:052
758599170,2cyclictest0-21swapper/209:14:042
758599170,2cyclictest0-21swapper/207:10:042
7584991714,2cyclictest9087-21kworker/u8:208:37:041
7583991714,2cyclictest31954-21kworker/u8:108:46:050
7583991714,2cyclictest17056-21kworker/u8:010:14:020
758399170,2cyclictest0-21swapper/009:37:050
7585991613,2cyclictest15907-21kworker/u8:107:33:042
7584991613,2cyclictest24133-21kworker/u8:008:00:041
758399160,14cyclictest23380-21ssh12:34:510
758599150,2cyclictest0-21swapper/208:05:052
7584991512,2cyclictest24133-21kworker/u8:008:13:041
758499150,2cyclictest0-21swapper/109:05:041
758499150,13cyclictest0-21swapper/107:35:111
7583991512,2cyclictest21844-21kworker/u8:109:10:050
7583991512,2cyclictest15907-21kworker/u8:107:31:050
7583991512,2cyclictest15139-21kworker/u8:207:47:040
758399150,2cyclictest0-21swapper/010:30:040
7586991411,2cyclictest31954-21kworker/u8:108:11:043
758699140,2cyclictest0-21swapper/308:05:053
758499140,2cyclictest0-21swapper/107:46:051
758499140,12cyclictest23950-21diskmemload11:34:011
7583991411,2cyclictest9087-21kworker/u8:209:04:010
7583991411,2cyclictest9087-21kworker/u8:208:33:050
7583991411,2cyclictest7324-21kworker/u8:007:27:040
7583991411,2cyclictest7324-21kworker/u8:007:27:040
7583991411,2cyclictest16528-21fschecks_count08:50:130
7583991411,2cyclictest0-21swapper/011:23:310
7583991411,2cyclictest0-21swapper/010:52:310
758399140,2cyclictest0-21swapper/008:20:320
758399140,13cyclictest0-21swapper/009:17:510
758399140,12cyclictest0-21swapper/011:08:430
758399140,12cyclictest0-21swapper/008:25:060
758599130,2cyclictest0-21swapper/208:35:042
758599130,12cyclictest0-21swapper/210:05:512
758499130,11cyclictest0-21swapper/107:50:311
7583991310,2cyclictest9087-21kworker/u8:208:35:040
7583991310,2cyclictest7651-21ssh11:43:110
7583991310,2cyclictest24133-21kworker/u8:008:14:040
7583991310,2cyclictest24133-21kworker/u8:008:05:050
7583991310,2cyclictest15907-21kworker/u8:107:37:040
7583991310,2cyclictest15139-21kworker/u8:207:24:050
7583991310,2cyclictest0-21swapper/011:45:380
7583991310,2cyclictest0-21swapper/007:16:020
758399130,12cyclictest23950-21diskmemload12:05:130
758399129,2cyclictest21844-21kworker/u8:109:07:040
758399120,2cyclictest0-21swapper/007:42:150
758399120,11cyclictest0-21swapper/012:01:050
758399120,11cyclictest0-21swapper/008:00:150
758599110,2cyclictest0-21swapper/208:01:042
758399118,2cyclictest9087-21kworker/u8:208:40:040
758399118,2cyclictest23950-21diskmemload10:45:370
758399118,2cyclictest0-21swapper/008:55:430
758399110,2cyclictest0-21swapper/008:16:050
75839990,8cyclictest0-21swapper/007:14:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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