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2026-09-01 - 15:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot7s.osadl.org (updated Tue Sep 01, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3211529380,9sleep20-21swapper/207:07:042
3232629279,9sleep00-21swapper/007:09:460
3221328564,6sleep30-21swapper/307:08:213
3210928366,13sleep10-21swapper/107:06:581
215302530,0sleep20-21swapper/212:00:472
3243099260,24cyclictest0-21swapper/209:28:192
3243099240,24cyclictest0-21swapper/211:19:272
3243099240,23cyclictest0-21swapper/209:47:532
70182230,1sleep30-21swapper/311:33:233
3243099230,2cyclictest0-21swapper/211:44:172
32430992219,2cyclictest0-21swapper/212:05:342
3243099220,21cyclictest0-21swapper/211:25:132
3242099220,20cyclictest0-21swapper/012:34:500
3243099210,21cyclictest0-21swapper/211:56:052
3243099210,21cyclictest0-21swapper/211:51:122
3242599210,2cyclictest0-21swapper/109:40:151
3242099211,8cyclictest0-21swapper/011:55:130
3242099210,4cyclictest0-21swapper/009:25:550
271532210,0sleep30-21swapper/309:10:213
3243099200,20cyclictest0-21swapper/211:21:212
3242599201,13cyclictest1957-21munin-run11:50:001
3242599200,2cyclictest0-21swapper/109:58:001
3242099196,6cyclictest25213-21diskmemload10:50:000
32420991919,0cyclictest0-21swapper/009:37:520
32434991817,1cyclictest6083-21kworker/3:110:28:133
3243099180,18cyclictest0-21swapper/211:31:382
3243099180,18cyclictest0-21swapper/210:39:442
3242599180,10cyclictest13524-21aten2_r7power_c10:20:121
3242099181,17cyclictest0-21swapper/011:11:450
3242099180,18cyclictest0-21swapper/012:19:590
32434991716,1cyclictest0-21swapper/311:45:463
3243499171,15cyclictest0-21swapper/307:10:123
3243499170,17cyclictest0-21swapper/309:25:203
3243499170,16cyclictest0-21swapper/312:27:333
3243499170,15cyclictest0-21swapper/311:15:373
32430991714,2cyclictest31520-21apache_volume10:50:122
3243099170,17cyclictest0-21swapper/210:31:572
3243099170,15cyclictest0-21swapper/210:00:222
3242599173,3cyclictest141rcu_preempt10:26:371
32425991716,1cyclictest25432-21kworker/1:212:30:331
32425991716,1cyclictest0-21swapper/112:05:171
32425991716,1cyclictest0-21swapper/111:27:391
32425991715,2cyclictest4306-21kworker/1:010:44:331
3242599170,17cyclictest0-21swapper/112:23:201
32420991717,0cyclictest0-21swapper/010:44:270
32420991716,1cyclictest13-21ksoftirqd/010:51:550
3242099170,2cyclictest0-21swapper/010:35:430
86212160,0chrt0-21swapper/309:57:263
32434991615,1cyclictest0-21swapper/308:31:233
3243099166,9cyclictest0-21swapper/208:35:282
3242599165,4cyclictest225-21systemd-journal11:59:591
3242599161,4cyclictest25213-21diskmemload11:15:221
32420991613,2cyclictest6067-21users09:55:280
32420991613,2cyclictest29115-21apache_processe10:10:120
3242099160,1cyclictest0-21swapper/011:49:060
3243499152,3cyclictest22669-21unixbench-2d10:05:263
32434991510,4cyclictest31022-21perf10:50:003
3243499150,13cyclictest0-21swapper/312:06:083
3243099150,2cyclictest0-21swapper/210:26:122
3243099150,0cyclictest0-21swapper/211:48:562
3242599151,1cyclictest25213-21diskmemload10:53:451
3242599150,10cyclictest49-21kcompactd007:14:301
3242099150,1cyclictest0-21swapper/011:32:070
3243499148,1cyclictest0-21swapper/309:43:053
32434991411,1cyclictest25213-21diskmemload12:15:173
3243499140,8cyclictest0-21swapper/307:50:143
3243099149,3cyclictest21654-21cut10:05:172
3243099145,6cyclictest29673-21apache209:54:012
3243099145,6cyclictest29673-21apache209:54:012
32430991412,1cyclictest0-21swapper/209:55:142
32430991411,2cyclictest25225-21perf09:10:002
3242599149,4cyclictest25738-21sshd09:29:341
3242599148,5cyclictest9841-21taskset07:30:001
3242599143,3cyclictest19106-21apt-get12:00:131
32425991411,2cyclictest23184-21apache_volume10:45:111
32425991411,2cyclictest15840-21apache_volume11:00:131
3242099142,7cyclictest0-21swapper/011:01:200
32420991410,3cyclictest20044-21sh11:40:270
32420991410,3cyclictest1218-21ssh12:08:400
32420991410,2cyclictest3747-21cat09:55:000
32420991410,2cyclictest3747-21cat09:55:000
3242099140,14cyclictest0-21swapper/009:16:120
3243499136,3cyclictest25662-21runrttasks08:00:253
3243499132,3cyclictest29069-21/usr/sbin/munin10:10:163
3243499132,11cyclictest49-21kcompactd007:20:573
3243499132,10cyclictest25849-21sensors11:05:243
3243499131,10cyclictest0-21swapper/308:15:153
32434991310,2cyclictest5440-21grep10:15:153
32434991310,2cyclictest21466-21head09:00:153
32434991310,2cyclictest21363-21cron10:25:003
32434991310,2cyclictest14614-21sh10:40:113
32434991310,2cyclictest13100-21grep07:35:183
3243499130,13cyclictest0-21swapper/311:29:223
3243099139,3cyclictest3640-21grep09:15:262
3243099139,3cyclictest26385-21turbostat.cron08:05:002
3243099139,3cyclictest19221-21cron07:50:002
32430991312,1cyclictest0-21swapper/209:41:132
32430991310,2cyclictest9924-21tr11:35:152
32430991310,2cyclictest4906-21wc07:20:002
32430991310,2cyclictest4430-21apache_volume12:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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