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2026-03-16 - 20:57

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 Mon Mar 16, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
706029783,10sleep20-21swapper/207:06:552
728529166,9sleep00-21swapper/007:09:510
696428861,9sleep30-21swapper/307:05:393
709428758,6sleep10-21swapper/107:07:221
739199270,26cyclictest0-21swapper/211:24:102
739199260,25cyclictest0-21swapper/210:18:102
7388992623,2cyclictest809-21diskmemload10:26:011
738899262,24cyclictest14866-21apache211:29:031
738899254,2cyclictest25-21ksoftirqd/111:59:021
738899253,3cyclictest0-21swapper/110:40:321
738899253,0cyclictest0-21swapper/109:18:211
7388992521,3cyclictest0-21swapper/109:48:221
738599250,23cyclictest0-21swapper/012:25:110
7388992421,2cyclictest809-21diskmemload11:01:481
7388992416,7cyclictest25-21ksoftirqd/109:13:281
738899241,2cyclictest0-21swapper/110:21:281
739499233,4cyclictest141rcu_preempt11:08:563
739199230,1cyclictest0-21swapper/211:01:472
738899239,13cyclictest0-21swapper/110:52:351
738899230,1cyclictest0-21swapper/109:36:171
739499220,21cyclictest0-21swapper/312:32:583
739499220,1cyclictest528-21kworker/3:011:35:233
7391992222,0cyclictest0-21swapper/211:46:132
739199221,18cyclictest0-21swapper/212:25:112
739199220,21cyclictest0-21swapper/212:04:322
739199220,20cyclictest0-21swapper/212:05:432
7388992218,3cyclictest809-21diskmemload10:02:341
7388992216,5cyclictest809-21diskmemload11:05:361
7388992216,5cyclictest0-21swapper/111:36:041
739199210,11cyclictest0-21swapper/210:26:282
7388992116,2cyclictest0-21swapper/111:40:211
7388992112,7cyclictest0-21swapper/109:52:371
738899210,1cyclictest0-21swapper/110:35:051
255572210,0sleep00-21swapper/010:02:360
739499200,1cyclictest0-21swapper/311:30:133
7391992019,1cyclictest0-21swapper/210:11:392
739199200,20cyclictest0-21swapper/211:10:472
7388992017,2cyclictest809-21diskmemload09:34:071
7388992012,7cyclictest0-21swapper/111:15:141
738599206,8cyclictest31667-21lockfile-create08:00:010
7385992018,1cyclictest0-21swapper/012:14:060
738599200,20cyclictest0-21swapper/012:07:450
7394991919,0cyclictest0-21swapper/310:26:133
739199190,19cyclictest0-21swapper/212:18:372
7388991918,1cyclictest0-21swapper/112:33:441
7388991916,1cyclictest0-21swapper/112:38:051
7388991914,5cyclictest0-21swapper/110:14:351
738899190,19cyclictest0-21swapper/110:56:211
738599191,2cyclictest0-21swapper/009:49:590
738599190,16cyclictest1927-21ssh11:25:140
739499180,14cyclictest0-21swapper/312:10:133
7391991817,1cyclictest0-21swapper/209:33:072
739199180,17cyclictest0-21swapper/209:51:242
738899184,13cyclictest0-21swapper/109:56:021
7388991815,3cyclictest0-21swapper/112:08:181
7388991810,8cyclictest809-21diskmemload12:20:501
738599186,6cyclictest13953-21perf08:30:000
7385991818,0cyclictest0-21swapper/011:38:110
738899175,12cyclictest0-21swapper/112:04:101
7388991717,0cyclictest0-21swapper/108:15:231
7388991715,1cyclictest18148-21cron11:35:001
7388991713,4cyclictest0-21swapper/111:47:021
7388991713,4cyclictest0-21swapper/110:07:211
738899171,11cyclictest17419-21runrttasks10:16:471
738899170,6cyclictest241rcuc/110:30:481
738599173,9cyclictest3800-21apt12:05:010
738599170,16cyclictest0-21swapper/009:40:560
7394991614,1cyclictest7379-21cyclictest09:52:453
7394991613,3cyclictest55650irq/127-enp2s0-10:12:383
7394991613,1cyclictest7379-21cyclictest09:40:013
739499160,1cyclictest0-21swapper/311:59:153
739499160,1cyclictest0-21swapper/309:56:213
739199160,16cyclictest0-21swapper/209:21:182
739199160,13cyclictest0-21swapper/209:10:132
738899166,6cyclictest0-21swapper/112:15:161
738899162,12cyclictest0-21swapper/108:10:141
7388991613,2cyclictest0-21swapper/108:00:181
7388991611,4cyclictest25965-21ls07:45:221
7388991610,5cyclictest0-21swapper/112:25:171
7388991610,4cyclictest0-21swapper/111:11:161
7385991614,2cyclictest13-21ksoftirqd/011:55:010
7385991614,1cyclictest25484-21sed11:20:010
739499156,5cyclictest225-21systemd-journal09:00:003
739499153,9cyclictest0-21swapper/310:50:073
7394991511,3cyclictest23644-21grep10:40:133
7391991512,2cyclictest26621-21apache_volume09:25:122
739199150,1cyclictest0-21swapper/211:43:042
739199150,1cyclictest0-21swapper/210:21:452
739199150,13cyclictest0-21swapper/209:38:422
7388991513,1cyclictest1737-21ssh10:45:361
738599157,7cyclictest2309-21/usr/sbin/munin11:05:240
738599151,8cyclictest9175-21munin-run08:20:010
7385991514,1cyclictest0-21swapper/010:17:310
739499146,7cyclictest7323-21cat10:50:003
739499146,7cyclictest27877-21/usr/sbin/munin09:45:193
7394991410,3cyclictest20893-21grep08:40:273
739499140,3cyclictest0-21swapper/309:39:373
739199147,2cyclictest21616-21head10:00:172
7391991414,0cyclictest0-21swapper/211:19:422
7391991410,3cyclictest8136-21grep10:50:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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