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2026-09-08 - 01:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 rackcslot7s.osadl.org (updated Mon Sep 07, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133635321360,2sleep33056-21PK-Backend09:05:173
136480521340,3sleep20-21swapper/210:25:192
131928121300,3sleep30-21swapper/308:15:203
129448127940,33sleep20-21swapper/207:06:072
129449927039,24sleep30-21swapper/307:06:193
129454226242,13sleep10-21swapper/107:06:531
129450126243,13sleep00-21swapper/007:06:200
14046532580,2sleep33056-21PK-Backend12:20:013
14079512430,4sleep01407942-21cron12:30:000
13807712420,4sleep13056-21PK-Backend11:10:221
13445232380,3sleep10-21swapper/109:30:011
13607122330,5sleep10-21swapper/110:15:121
13065402330,2sleep00-21swapper/007:40:120
13114112310,3sleep10-21swapper/107:55:011
1294928993015,10cyclictest1402473-21apt-get12:15:002
13073092280,3sleep10-21swapper/107:40:211
13577312260,10sleep126-21ksoftirqd/110:05:171
129492899260,24cyclictest1389-21rtkit-daemon08:51:002
139099250,4rtkit-daemon1389-21rtkit-daemon12:37:262
13044262250,14sleep234-21ksoftirqd/207:35:012
1294935992416,5cyclictest1369279-21apt10:40:133
129492899240,22cyclictest1389-21rtkit-daemon11:20:132
13540182230,2sleep20-21swapper/209:55:122
1294935992320,2cyclictest3056-21PK-Backend07:27:233
1294925992320,2cyclictest3056-21PK-Backend08:28:241
1294925992320,2cyclictest3056-21PK-Backend08:17:011
1294925992316,4cyclictest1095-21runrttasks09:10:111
129492599231,2cyclictest0-21swapper/111:55:211
1294922992315,6cyclictest1299947-21python307:20:210
13683142220,4sleep00-21swapper/010:35:200
129493599226,15cyclictest1324320-21uname08:30:173
1294935992220,1cyclictest3056-21PK-Backend08:46:593
1294935992220,1cyclictest0-21swapper/308:43:143
1294935992214,6cyclictest1349187-21sed09:40:223
129493599220,20cyclictest3056-21PK-Backend11:31:253
1294928992218,3cyclictest886-21NetworkManager11:09:252
1294928992211,8cyclictest883-21dbus-daemon08:20:002
1294928992211,8cyclictest2085813-21snapd10:18:162
129492899220,20cyclictest0-21swapper/209:25:152
1294925992220,1cyclictest3056-21PK-Backend09:44:551
1294925992215,5cyclictest2156-21gnome-shell09:06:091
1294925992214,6cyclictest1368705-21sshd10:36:171
1294922992220,1cyclictest0-21swapper/010:19:550
1294922992220,1cyclictest0-21swapper/008:25:380
1294922992220,1cyclictest0-21swapper/008:14:020
1294922992220,1cyclictest0-21swapper/008:07:260
129492299220,21cyclictest0-21swapper/008:18:210
139099210,3rtkit-daemon1389-21rtkit-daemon09:08:172
139099210,18rtkit-daemon1317-21systemd07:40:152
1294935992119,1cyclictest3056-21PK-Backend11:35:373
1294935992119,1cyclictest3056-21PK-Backend10:22:103
1294935992119,1cyclictest3056-21PK-Backend09:36:133
1294935992119,1cyclictest3056-21PK-Backend07:45:353
1294935992119,1cyclictest3056-21PK-Backend07:35:073
1294935992119,1cyclictest0-21swapper/312:32:423
1294935992119,1cyclictest0-21swapper/311:16:113
1294935992119,1cyclictest0-21swapper/310:55:293
1294935992119,1cyclictest0-21swapper/310:50:153
1294935992119,1cyclictest0-21swapper/308:10:233
129493599211,18cyclictest1298087-21ntp_states07:15:193
129493599210,20cyclictest3056-21PK-Backend11:27:123
129493599210,19cyclictest3056-21PK-Backend11:40:373
129493599210,19cyclictest3056-21PK-Backend09:00:033
129493599210,19cyclictest3056-21PK-Backend09:00:033
129492899212,13cyclictest1095-21runrttasks11:10:212
1294928992113,6cyclictest883-21dbus-daemon08:10:152
1294928992111,7cyclictest436-20systemd-journal08:35:002
1294928992111,7cyclictest1383134-21cron11:20:002
129492899210,20cyclictest0-21swapper/211:29:042
1294925992119,1cyclictest3056-21PK-Backend12:37:121
1294925992119,1cyclictest3056-21PK-Backend10:54:171
1294925992119,1cyclictest3056-21PK-Backend08:30:331
1294925992119,1cyclictest0-21swapper/112:11:231
1294925992119,1cyclictest0-21swapper/112:07:591
1294925992119,1cyclictest0-21swapper/112:03:451
1294925992119,1cyclictest0-21swapper/111:46:091
1294925992119,1cyclictest0-21swapper/111:38:321
1294925992119,1cyclictest0-21swapper/111:25:541
1294925992119,1cyclictest0-21swapper/110:32:411
1294925992119,1cyclictest0-21swapper/109:59:421
1294925992119,1cyclictest0-21swapper/109:32:321
1294925992119,1cyclictest0-21swapper/108:59:331
1294925992118,2cyclictest3056-21PK-Backend10:41:051
129492599210,20cyclictest0-21swapper/111:50:211
129492599210,20cyclictest0-21swapper/110:04:091
129492599210,20cyclictest0-21swapper/107:36:461
1294922992119,1cyclictest0-21swapper/011:43:570
1294922992119,1cyclictest0-21swapper/011:30:320
1294922992119,1cyclictest0-21swapper/011:11:530
1294922992119,1cyclictest0-21swapper/011:02:270
1294922992119,1cyclictest0-21swapper/011:02:270
1294922992119,1cyclictest0-21swapper/010:34:210
1294922992119,1cyclictest0-21swapper/010:22:320
1294922992119,1cyclictest0-21swapper/010:10:290
1294922992119,1cyclictest0-21swapper/009:06:200
1294922992119,1cyclictest0-21swapper/007:51:580
129492299210,20cyclictest0-21swapper/012:33:390
129492299210,20cyclictest0-21swapper/012:11:490
129492299210,20cyclictest0-21swapper/007:17:440
139099200,2rtkit-daemon1389-21rtkit-daemon07:57:442
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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