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2026-03-06 - 20:32

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 Fri Mar 06, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16458211895,18sleep00-21swapper/007:05:220
16984211498,11sleep10-21swapper/107:06:431
16968211496,13sleep20-21swapper/207:06:322
17152210593,6sleep30-21swapper/307:08:543
179902730,1sleep217997-21timerwakeupswit09:26:032
17502560,1sleep01751-21ssh12:30:430
276812550,1sleep229-21rcuc/211:16:432
17269993617,18cyclictest0-21swapper/107:45:111
74452270,0sleep30-21swapper/312:03:213
1727099211,2cyclictest0-21swapper/208:30:122
1727099210,2cyclictest0-21swapper/208:40:092
1726999210,4cyclictest0-21swapper/110:20:041
1726899210,2cyclictest0-21swapper/008:50:110
254842200,0sleep20-21swapper/212:21:272
1727099200,2cyclictest0-21swapper/208:50:102
1726999200,18cyclictest0-21swapper/107:35:121
1726999190,3cyclictest0-21swapper/107:52:051
1726999190,18cyclictest0-21swapper/111:25:121
1726899181,2cyclictest0-21swapper/009:55:100
30852170,0sleep00-21swapper/010:18:200
1727199171,14cyclictest0-21swapper/309:30:183
1726899170,2cyclictest0-21swapper/012:26:050
17271991611,3cyclictest7458-21runrttasks11:59:223
17270991611,3cyclictest10083-21rm11:32:052
1726999160,14cyclictest0-21swapper/111:05:191
1726899161,3cyclictest18277-21ssh10:00:140
1726899161,13cyclictest11054-21munin-run09:20:010
1726899160,15cyclictest0-21swapper/012:17:050
57222150,0sleep00-21swapper/009:14:300
1727199153,8cyclictest17816-21ssh09:26:013
1727199151,3cyclictest32108-21grep07:45:143
17271991511,2cyclictest31785-21apt-get10:15:053
1727199151,12cyclictest0-21swapper/311:36:083
1727199150,13cyclictest8199-21smart_sda09:16:043
1727199150,13cyclictest0-21swapper/312:30:293
17270991510,3cyclictest27167-21ssh11:50:132
17270991510,3cyclictest0-21swapper/211:05:162
1727099150,13cyclictest1230-21diskmemload09:50:452
1726999151,2cyclictest2714-21ssh10:17:451
17269991510,3cyclictest0-21swapper/110:35:541
17269991510,3cyclictest0-21swapper/110:30:141
1726999150,3cyclictest0-21swapper/112:31:041
1726999150,13cyclictest0-21swapper/112:14:041
1726999150,13cyclictest0-21swapper/110:06:451
1726899150,2cyclictest0-21swapper/011:30:040
74222140,3sleep07435-21ssh12:36:130
200682140,2sleep00-21swapper/011:42:380
1727199142,6cyclictest0-21swapper/308:45:003
17271991411,2cyclictest0-21swapper/310:06:483
1727199141,11cyclictest26261-21iostat07:30:163
1727199141,11cyclictest17906-21ssh11:06:263
1727199141,11cyclictest1360-21diskmemload09:42:583
1727199140,2cyclictest0-21swapper/310:55:583
1727199140,12cyclictest0-21swapper/311:50:183
1727099141,2cyclictest1230-21diskmemload12:36:392
17270991411,2cyclictest1230-21diskmemload10:16:252
17270991411,2cyclictest0-21swapper/210:25:362
17270991410,2cyclictest0-21swapper/212:12:092
1727099140,3cyclictest24735-21sort10:40:152
1727099140,2cyclictest0-21swapper/212:04:562
1727099140,2cyclictest0-21swapper/211:12:552
1727099140,2cyclictest0-21swapper/210:30:452
1727099140,2cyclictest0-21swapper/210:10:052
1727099140,2cyclictest0-21swapper/210:01:162
1727099140,2cyclictest0-21swapper/209:40:552
1727099140,13cyclictest0-21swapper/210:35:552
1727099140,12cyclictest30645-21ssh10:45:552
1727099140,12cyclictest15772-21basename08:25:112
1727099140,12cyclictest15772-21basename08:25:102
1727099140,12cyclictest1230-21diskmemload11:35:272
1727099140,12cyclictest0-21swapper/212:25:492
17269991411,2cyclictest0-21swapper/112:02:591
1726999140,12cyclictest1230-21diskmemload12:36:451
1726999140,12cyclictest1230-21diskmemload09:22:381
1726999140,12cyclictest0-21swapper/111:48:561
1726999140,12cyclictest0-21swapper/110:52:361
1726899142,7cyclictest0-21swapper/008:00:000
1726899142,6cyclictest0-21swapper/011:40:010
1726899140,3cyclictest27974-21ssh11:17:100
1726899140,3cyclictest17719-21ssh11:06:100
1726899140,3cyclictest12385-21rm12:08:290
38372130,2sleep30-21swapper/310:52:163
1727199138,3cyclictest26965-21grep11:15:553
1727199138,3cyclictest0-21swapper/312:05:153
1727199132,6cyclictest0-21swapper/310:00:003
1727199132,6cyclictest0-21swapper/307:20:003
1727199131,10cyclictest5676-21ssh09:47:113
17271991310,2cyclictest0-21swapper/312:14:193
17271991310,2cyclictest0-21swapper/311:00:093
17271991310,2cyclictest0-21swapper/310:45:153
1727199130,2cyclictest0-21swapper/311:49:173
1727199130,11cyclictest0-21swapper/311:41:093
1727199130,11cyclictest0-21swapper/309:38:393
17270991310,2cyclictest1230-21diskmemload09:31:172
17270991310,2cyclictest0-21swapper/212:08:252
17270991310,2cyclictest0-21swapper/210:51:462
17270991310,2cyclictest0-21swapper/210:07:382
17270991310,2cyclictest0-21swapper/208:55:152
17270991310,2cyclictest0-21swapper/208:00:132
1727099130,2cyclictest0-21swapper/209:35:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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