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2026-06-17 - 19:32

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 Wed Jun 17, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32597211087,15sleep10-21swapper/107:05:001
2041210998,6sleep00-21swapper/007:08:400
2084210796,6sleep30-21swapper/307:09:103
1385210787,13sleep20-21swapper/207:05:362
38252830,0sleep30-21swapper/308:31:033
289662820,0sleep20-21swapper/209:55:252
261092700,0sleep20-21swapper/212:15:472
149872670,0sleep20-21swapper/210:51:452
12402270,0sleep20-21swapper/211:49:092
218199261,7cyclictest2099-21ssh11:50:113
217999260,2cyclictest0-21swapper/111:45:101
218199211,18cyclictest0-21swapper/310:45:113
217999211,2cyclictest0-21swapper/112:05:111
217999210,19cyclictest0-21swapper/111:50:101
2180992017,2cyclictest29319-21kworker/u8:212:26:052
2180991916,2cyclictest27354-21kworker/u8:210:48:042
2178991916,2cyclictest25753-21kworker/u8:109:58:050
242662170,0sleep30-21swapper/311:02:093
2180991714,2cyclictest8593-21kworker/u8:109:37:052
2180991714,2cyclictest3462-21kworker/u8:207:14:012
2180991714,2cyclictest27354-21kworker/u8:210:38:062
2180991714,2cyclictest20084-21kworker/u8:111:28:052
2180991714,2cyclictest18836-21kworker/u8:011:44:052
2180991714,2cyclictest18836-21kworker/u8:011:44:042
2180991714,2cyclictest1582-21kworker/u8:010:40:022
2180991714,2cyclictest12980-21kworker/u8:209:33:042
2180991714,2cyclictest12980-21kworker/u8:209:19:052
2178991714,2cyclictest3103-21kworker/u8:011:18:050
2181991612,2cyclictest0-21swapper/310:22:123
218199160,14cyclictest0-21swapper/309:21:023
2180991613,2cyclictest24268-21kworker/u8:008:01:052
2180991613,2cyclictest21795-21kworker/u8:010:24:012
2180991613,2cyclictest10188-21kworker/u8:010:16:022
2178991613,2cyclictest29236-21kworker/u8:109:28:050
2178991613,2cyclictest19260-21kworker/u8:309:50:060
2178991613,2cyclictest18836-21kworker/u8:011:36:050
2178991613,2cyclictest18836-21kworker/u8:011:36:040
2178991612,3cyclictest18836-21kworker/u8:011:34:050
251752150,0sleep10-21swapper/112:15:121
2181991512,2cyclictest0-21swapper/309:53:323
218199150,3cyclictest0-21swapper/308:25:133
2180991512,2cyclictest4733-21kworker/u8:110:29:052
2180991512,2cyclictest23423-21kworker/u8:112:31:052
2180991512,2cyclictest20084-21kworker/u8:112:00:052
2180991512,2cyclictest18425-21kworker/u8:007:53:042
2180991512,2cyclictest10822-21kworker/u8:212:12:062
218099150,3cyclictest370-21df_abs10:00:132
218099150,2cyclictest0-21swapper/211:36:052
218099150,2cyclictest0-21swapper/211:36:052
218099150,2cyclictest0-21swapper/211:18:052
217999152,10cyclictest0-21swapper/108:42:581
217999152,10cyclictest0-21swapper/107:39:591
2179991510,3cyclictest0-21swapper/107:25:181
2178991512,2cyclictest0-21swapper/009:41:540
217899150,2cyclictest0-21swapper/008:41:040
218199149,3cyclictest28524-21ssh12:19:233
218199149,3cyclictest13565-21latency08:55:153
218199149,3cyclictest12046-21ssh11:25:103
218199141,2cyclictest8422-21apt-get07:25:063
2181991411,2cyclictest18650-21diskmemload12:06:123
2181991411,2cyclictest0-21swapper/311:41:533
2181991411,2cyclictest0-21swapper/311:41:523
2181991411,2cyclictest0-21swapper/311:36:523
2181991411,2cyclictest0-21swapper/311:36:523
218199141,11cyclictest3728-21runrttasks10:43:213
2181991410,2cyclictest31380-21ssh09:58:483
218199140,2cyclictest0-21swapper/311:30:113
218199140,2cyclictest0-21swapper/309:31:323
218199140,12cyclictest26860-21ssh11:05:143
218199140,12cyclictest0-21swapper/310:35:533
218199140,12cyclictest0-21swapper/310:13:533
218199140,12cyclictest0-21swapper/309:45:163
2180991411,2cyclictest32521-21kworker/u8:208:43:042
2180991411,2cyclictest32521-21kworker/u8:208:36:052
2180991411,2cyclictest3103-21kworker/u8:011:20:012
2180991411,2cyclictest14901-21kworker/u8:207:41:052
2180991411,2cyclictest12980-21kworker/u8:208:58:022
2180991411,2cyclictest10822-21kworker/u8:212:07:052
2180991411,2cyclictest10188-21kworker/u8:010:11:052
2180991411,2cyclictest10169-21kworker/u8:007:28:012
218099140,7cyclictest0-21swapper/209:50:062
218099140,2cyclictest0-21swapper/211:34:052
218099140,13cyclictest0-21swapper/211:13:042
217999141,3cyclictest0-21swapper/110:30:591
217999141,2cyclictest16187-21apt-get11:30:071
2179991410,2cyclictest6929-21grep07:20:121
217999140,12cyclictest4973-21cpu08:35:121
217999140,12cyclictest18650-21diskmemload12:00:401
217999140,12cyclictest15375-21fschecks_time09:00:151
217999140,12cyclictest0-21swapper/109:16:001
2178991411,2cyclictest6912-21kworker/u8:110:45:040
2178991411,2cyclictest23397-21kworker/u8:009:16:050
2178991411,2cyclictest20084-21kworker/u8:111:13:040
2178991411,2cyclictest0-21swapper/011:44:540
2178991411,2cyclictest0-21swapper/011:44:540
2178991411,2cyclictest0-21swapper/011:05:140
2178991411,2cyclictest0-21swapper/009:05:180
2178991410,2cyclictest14301-21ssh10:51:020
217899140,13cyclictest13319-21ssh12:01:240
217899140,13cyclictest0-21swapper/012:13:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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