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2026-08-18 - 14:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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.

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 all highest latencies:
System rackeslot4s.osadl.org (updated Tue Aug 18, 2026 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
613101994842,4cyclictest335557-21systemd-journal00:20:003
613101994640,4cyclictest878336-21kworker/u8:3+events_unbound00:30:223
613096994138,2cyclictest608145-21kworker/u8:3+flush-259:019:45:232
613093994035,3cyclictest608145-21kworker/u8:3+flush-259:019:55:011
613090994033,4cyclictest863225-21diskstats23:10:150
613101993833,3cyclictest878336-21kworker/u8:3+events_unbound23:50:193
613093993832,4cyclictest712534-21/usr/sbin/munin20:45:151
613096993733,3cyclictest800458-21kworker/u8:3+flush-259:022:40:252
613096993733,3cyclictest800458-21kworker/u8:3+events_unbound23:00:252
613090993631,3cyclictest697026-21apt-get20:30:130
613090993631,3cyclictest1-21systemd19:45:000
613093993530,3cyclictest335557-21systemd-journal20:01:361
613090993531,3cyclictest648899-21kworker/u8:1+flush-259:019:55:240
613101993431,2cyclictest700894-21kworker/u8:2+events_unbound21:00:203
613101993431,2cyclictest700894-21kworker/u8:2+events_unbound21:00:193
613096993431,2cyclictest920193-21kworker/u8:4+flush-259:000:05:192
613093993429,4cyclictest826635-21kworker/u8:0+flush-259:022:45:001
613101993327,4cyclictest758906-21apt-get21:30:003
613096993329,3cyclictest759555-21kworker/u8:2+flush-259:023:25:172
613096993329,3cyclictest759555-21kworker/u8:2+flush-259:022:25:172
613096993328,3cyclictest759555-21kworker/u8:2+flush-259:022:00:162
613096993327,5cyclictest554576-21kworker/u8:0+flush-259:019:30:012
613090993328,4cyclictest654534-21gpgv19:50:010
613101993227,3cyclictest686131-21kworker/u8:0+flush-259:021:15:173
613096993228,3cyclictest648899-21kworker/u8:1+flush-259:020:25:292
613096993226,4cyclictest335557-21systemd-journal00:30:212
613090993227,4cyclictest888716-21gpgv23:35:000
613090993125,4cyclictest613012-21latency_hist19:10:010
613101993027,2cyclictest554576-21kworker/u8:0+flush-259:019:40:013
613101993025,3cyclictest769696-21kworker/u8:1+flush-259:021:45:003
613101993025,3cyclictest671016-21apt-get20:05:113
613096993026,3cyclictest894431-21kworker/u8:4+flush-259:023:40:242
613096993026,3cyclictest878336-21kworker/u8:3+flush-259:000:25:202
613093993025,4cyclictest648899-21kworker/u8:1+flush-259:019:45:001
613093993025,3cyclictest335557-21systemd-journal23:47:081
613093993019,9cyclictest695853-21ntpq20:25:231
613101992925,3cyclictest847337-21kworker/u8:1+flush-259:022:55:243
613101992923,4cyclictest722648-21latency_hist20:55:013
613096992925,3cyclictest920193-21kworker/u8:4+events_unbound00:18:262
613096992925,3cyclictest909492-21kworker/u8:0+events_unbound00:00:252
613096992924,4cyclictest608145-21kworker/u8:3+events_unbound20:14:252
613096992923,4cyclictest888595-21latency_hist23:35:012
613101992823,3cyclictest676229-21kworker/u8:4+events_unbound20:10:153
613096992825,2cyclictest878336-21kworker/u8:3+events_unbound23:45:142
613096992824,3cyclictest847337-21kworker/u8:1+events_unbound00:20:292
613096992824,3cyclictest738415-21kworker/u8:4+flush-259:021:25:292
613096992824,3cyclictest728080-21kworker/u8:3+flush-259:021:20:252
613096992824,3cyclictest706841-21kworker/u8:1+events_unbound21:05:162
613096992824,3cyclictest559915-21kworker/u8:2+events_unbound19:10:262
613093992822,4cyclictest946159-21latency_hist00:30:011
613090992822,4cyclictest919259-21ntpq00:00:190
613101992723,3cyclictest759555-21kworker/u8:2+events_unbound23:10:203
613096992724,2cyclictest554576-21kworker/u8:0+flush-259:019:35:252
613096992723,2cyclictest728080-21kworker/u8:3+events_unbound21:35:212
613096992721,4cyclictest847739-21diskstats22:55:142
613096992720,5cyclictest335557-21systemd-journal21:20:002
613090992724,2cyclictest759555-21kworker/u8:2+flush-259:022:00:180
613090992723,3cyclictest842390-21apt-get22:50:120
613101992623,2cyclictest894150-21kworker/u8:2+flush-259:023:40:003
613101992623,2cyclictest800458-21kworker/u8:3+flush-259:022:10:193
613101992620,4cyclictest711415-21ntpq20:40:213
613101992620,4cyclictest665640-21base6420:00:013
613101992620,4cyclictest335557-21systemd-journal23:17:003
613101992619,5cyclictest335557-21systemd-journal22:25:243
613096992622,3cyclictest759555-21kworker/u8:2+flush-259:023:20:202
613096992622,3cyclictest759555-21kworker/u8:2+flush-259:023:20:202
613096992622,3cyclictest759555-21kworker/u8:2+events_unbound22:46:242
613096992622,3cyclictest759555-21kworker/u8:2+events_unbound22:30:252
613096992622,3cyclictest738415-21kworker/u8:4+flush-259:021:10:212
613096992622,3cyclictest608145-21kworker/u8:3+events_unbound19:44:252
613096992621,4cyclictest800458-21kworker/u8:3+events_unbound22:07:262
613096992620,4cyclictest727853-21latency_hist21:00:012
613090992620,4cyclictest644041-21latency_hist19:40:000
613101992521,3cyclictest648899-21kworker/u8:1+events_unbound20:30:203
613101992520,4cyclictest769696-21kworker/u8:1+flush-259:021:45:233
613101992519,4cyclictest837396-21diskstats22:45:143
613096992521,3cyclictest785210-21kworker/u8:3+events_unbound21:55:252
613096992519,4cyclictest676000-21latency_hist20:10:022
613093992522,2cyclictest659972-21kworker/u8:0+flush-259:020:05:181
613093992519,4cyclictest795544-21latency_hist22:05:011
613101992420,3cyclictest878336-21kworker/u8:3+flush-259:000:35:253
613101992420,3cyclictest559915-21kworker/u8:2+flush-259:019:20:153
613101992419,4cyclictest800458-21kworker/u8:3+events_unbound22:50:223
613101992419,3cyclictest681438-21/usr/sbin/munin20:15:213
613096992421,2cyclictest847337-21kworker/u8:1+events_unbound00:10:232
613096992420,3cyclictest759555-21kworker/u8:2+events_unbound21:45:232
613096992420,3cyclictest759555-21kworker/u8:2+events_unbound21:33:262
613096992420,3cyclictest559915-21kworker/u8:2+events_unbound19:24:252
613096992419,4cyclictest559915-21kworker/u8:2+events_unbound19:57:252
613093992421,2cyclictest554576-21kworker/u8:0+events_unbound19:35:181
613093992420,3cyclictest816499-21apt-get22:25:131
613093992419,4cyclictest775122-21apt-get21:45:131
613093992418,5cyclictest0-21swapper/123:20:001
613090992420,3cyclictest847337-21kworker/u8:1+flush-259:023:19:550
613090992417,5cyclictest893348-21ntpq23:35:220
613101992317,4cyclictest509-21rs:main3
613096992321,1cyclictest847337-21kworker/u8:1+events_unbound23:05:132
613096992319,3cyclictest909757-21kworker/u8:5+flush-259:023:55:162
613093992319,3cyclictest920193-21kworker/u8:4+flush-259:000:20:001
613090992320,2cyclictest800458-21kworker/u8:3+flush-259:022:35:210
613090992320,2cyclictest509-21rs:main0
613101992218,3cyclictest909757-21kworker/u8:5+flush-259:000:30:003
613101992216,4cyclictest509-21rs:main3
613096992218,3cyclictest862821-21kworker/u8:0+events_unbound23:20:002
613096992218,3cyclictest554576-21kworker/u8:0+events_unbound19:31:252
613096992217,3cyclictest665751-21base6420:00:022
613093992218,3cyclictest920439-21apt-get00:05:151
613093992218,3cyclictest738415-21kworker/u8:4+flush-259:021:10:171
613093992216,5cyclictest758906-21apt-get21:29:591
61309099229,11cyclictest0-21swapper/020:10:000
613090992216,5cyclictest914048-21ntpq23:55:210
613090992215,5cyclictest622437-21ntpq19:15:210
613101992117,3cyclictest800458-21kworker/u8:3+events_unbound22:35:213
613101992117,3cyclictest759555-21kworker/u8:2+events_unbound23:25:193
613101992117,2cyclictest754053-21apt-get21:25:143
613101992116,4cyclictest909757-21kworker/u8:5+events_unbound23:55:233
613096992118,2cyclictest686131-21kworker/u8:0+events_unbound20:45:232
613096992117,3cyclictest888541-21kworker/u8:0+events_unbound23:35:242
613096992117,3cyclictest648899-21kworker/u8:1+events_unbound19:50:212
613093992116,4cyclictest335557-21systemd-journal22:40:001
613093992116,3cyclictest628792-21apt-get19:25:121
613093992115,4cyclictest701942-21latency_hist20:35:011
613093992115,4cyclictest335557-21systemd-journal19:25:011
61309099211,6cyclictest814764-21cut22:20:190
613090992116,4cyclictest940060-21ntpq00:20:240
613101992015,4cyclictest608145-21kworker/u8:3+events_unbound20:00:013
613101992015,3cyclictest707103-21cron20:40:003
613096992016,3cyclictest759555-21kworker/u8:2+events_unbound21:53:252
613096992015,4cyclictest805864-21kworker/u8:0+events_unbound22:21:552
613093992015,4cyclictest785210-21kworker/u8:3+flush-259:021:55:191
613093992014,5cyclictest680273-21ntpq20:10:211
613093992014,4cyclictest732150-21ntpq21:00:241
613093992014,4cyclictest732150-21ntpq21:00:231
61309099205,1cyclictest0-21swapper/022:40:190
61309099204,2cyclictest507-21in:imuxsock21:55:000
613090992016,3cyclictest559915-21kworker/u8:2+flush-259:019:20:180
61309099201,5cyclictest821437-21idleruntime-cro22:30:000
61309099201,5cyclictest758897-21idleruntime-cro21:30:000
61309099201,2cyclictest951636-21apt-get00:35:120
61309099200,6cyclictest707118-21turbostat.cron20:40:000
61309099200,3cyclictest769670-21awk21:40:000
61309099200,3cyclictest749293-21/usr/sbin/munin21:20:170
61309099200,2cyclictest681438-21/usr/sbin/munin20:15:170
613101991915,3cyclictest706841-21kworker/u8:1+events_unbound21:05:243
613101991915,3cyclictest648899-21kworker/u8:1+flush-259:020:20:183
613101991914,2cyclictest878317-21latency_hist23:25:003
613096991915,3cyclictest800458-21kworker/u8:3+flush-259:022:15:192
613096991915,3cyclictest700894-21kworker/u8:2+flush-259:020:50:202
613093991916,2cyclictest821700-21apt-get22:30:131
613093991915,3cyclictest795806-21apt-get22:05:121
613093991915,3cyclictest335557-21systemd-journal20:18:251
61309099192,2cyclictest721809-21ntpq20:50:240
61309099192,1cyclictest856789-21ntpq23:00:220
61309099192,1cyclictest841273-21ntpq22:45:220
61309099191,5cyclictest764544-21cron21:35:000
613090991915,3cyclictest554576-21kworker/u8:0+flush-259:019:31:380
61309099191,4cyclictest862377-21sed23:05:240
61309099191,4cyclictest748605-21awk21:20:000
613090991914,4cyclictest659050-21ntpq19:50:200
61309099191,3cyclictest804955-21ntpq22:10:200
61309099191,3cyclictest733025-21apt21:05:000
61309099191,3cyclictest733025-21apt21:04:590
61309099191,2cyclictest908814-21ntpq23:50:210
61309099191,2cyclictest789540-21ntpq21:55:250
61309099191,2cyclictest726954-21ntpq20:55:230
61309099190,4cyclictest904559-21munin-plugin-st23:50:000
613101991814,3cyclictest847337-21kworker/u8:1+events_unbound23:05:193
613101991814,3cyclictest759555-21kworker/u8:2+events_unbound22:40:143
613096991815,2cyclictest676229-21kworker/u8:4+flush-259:020:15:222
613096991814,3cyclictest878336-21kworker/u8:3+events_unbound00:35:162
613096991814,3cyclictest759555-21kworker/u8:2+events_unbound22:11:252
613096991814,3cyclictest686131-21kworker/u8:0+events_unbound20:30:282
61309399185,11cyclictest622958-21vmstat19:15:251
613093991813,3cyclictest847337-21kworker/u8:1+flush-259:000:20:111
613093991813,3cyclictest509-21rs:main1
61309399180,10cyclictest712183-21seq20:43:501
61309099188,9cyclictest877603-21sensors23:20:250
61309099188,9cyclictest877603-21sensors23:20:250
61309099184,3cyclictest490-21dbus-daemon20:49:590
61309099183,3cyclictest945013-21sed00:25:210
613090991815,2cyclictest676229-21kworker/u8:4+flush-259:020:10:180
61309099181,3cyclictest920863-21irqcore00:05:200
61309099181,3cyclictest851550-21ntpq22:55:200
61309099181,3cyclictest806141-21taskset22:15:120
61309099181,2cyclictest934882-21ntpq00:15:200
61309099181,2cyclictest799840-21ntpq22:05:200
61309099181,2cyclictest779210-21ntpq21:45:230
61309099181,2cyclictest737256-21ntpq21:05:220
61309099181,2cyclictest632750-21ntpq19:25:220
61309099181,2cyclictest0-21swapper/020:20:130
61309099180,4cyclictest738547-21cpuspeed_turbos21:10:100
61309099180,4cyclictest618195-21turbostat.cron19:15:000
61309099180,3cyclictest881446-21grep23:25:190
61309099180,17cyclictest895478-21kthreadcore23:40:160
613101991714,2cyclictest909757-21kworker/u8:5+flush-259:000:10:003
613101991713,3cyclictest800458-21kworker/u8:3+flush-259:022:15:253
613101991710,5cyclictest790392-21latency_hist22:00:013
613096991714,2cyclictest700894-21kworker/u8:2+flush-259:021:00:222
613096991714,2cyclictest700894-21kworker/u8:2+flush-259:021:00:212
613096991714,2cyclictest686131-21kworker/u8:0+events_unbound20:40:212
613096991713,3cyclictest826635-21kworker/u8:0+events_unbound22:36:562
613096991713,3cyclictest686131-21kworker/u8:0+events_unbound20:21:402
613093991714,2cyclictest883454-21cron23:30:001
613093991713,3cyclictest759555-21kworker/u8:2+flush-259:022:55:001
613093991710,5cyclictest904981-21diskstats23:50:141
61309399170,9cyclictest899097-21seq23:41:301
61309099171,2cyclictest950459-21ntpq00:30:210
61309099171,2cyclictest930543-21sh00:15:000
61309099171,2cyclictest665937-21cpuspeed_turbos20:00:140
61309099170,4cyclictest825638-21tail22:30:210
61309099170,4cyclictest773978-21ntpq21:40:230
61309099170,3cyclictest696747-21cron20:30:000
613093991614,1cyclictest0-21swapper/119:35:001
61309399161,13cyclictest888587-21sh23:35:001
61309399160,14cyclictest774840-21cron21:44:591
61309399160,14cyclictest738176-21cron21:10:001
61309399160,13cyclictest863151-21cpuspeed_turbos23:10:141
61309399160,12cyclictest707120-21idleruntime-cro20:39:591
613101991513,2cyclictest847337-21kworker/u8:1+events_unbound00:10:163
613101991511,3cyclictest554576-21kworker/u8:0+flush-259:019:30:243
613096991511,3cyclictest800458-21kworker/u8:3+events_unbound22:50:142
613096991510,4cyclictest700894-21kworker/u8:2+flush-259:020:35:232
61309399157,7cyclictest0-21swapper/119:10:251
61309399156,8cyclictest805858-21cron22:15:011
61309399154,9cyclictest889610-21cat23:35:161
61309399153,10cyclictest652557-21tr19:45:181
61309399152,11cyclictest721850-21smartctl20:50:251
61309399152,10cyclictest665525-21apt-key20:00:001
61309399151,8cyclictest857732-21cat23:05:001
613093991512,2cyclictest956491-21cron00:40:011
613093991511,3cyclictest509-21rs:main1
61309399151,12cyclictest748598-21cron21:20:001
61309399151,12cyclictest690673-21ntpq20:20:221
61309399150,14cyclictest842124-21basename22:50:001
61309399150,13cyclictest816245-21basename22:25:011
61309399150,12cyclictest873383-21cat23:20:121
61309399150,12cyclictest873383-21cat23:20:121
61309399150,12cyclictest858010-21cpuspeed_turbos23:05:121
61309399150,12cyclictest764938-21cpuspeed_turbos21:35:151
61310199149,4cyclictest795239-21kworker/u8:1+flush-259:022:10:013
61310199148,4cyclictest654905-21cat19:50:003
613101991411,2cyclictest500-21systemd-logind19:55:013
613096991410,3cyclictest847337-21kworker/u8:1+events_unbound23:10:162
613096991410,3cyclictest728080-21kworker/u8:3+flush-259:021:40:262
61309399143,9cyclictest752371-21tr21:20:191
61309399141,11cyclictest919259-21ntpq00:00:191
61309399141,11cyclictest851616-21ntpq22:55:211
61309399141,11cyclictest810176-21ntpq22:15:211
61309399141,11cyclictest764698-21latency_hist21:35:011
61309399140,12cyclictest910420-21sed23:55:171
61309399140,12cyclictest784519-21switchtime21:50:231
61309399140,12cyclictest726942-21ntpq20:55:231
61310199139,3cyclictest648899-21kworker/u8:1+flush-259:019:41:363
613101991311,1cyclictest0-21swapper/321:55:013
613101991310,2cyclictest738445-21apt-get21:10:093
613101991310,2cyclictest728080-21kworker/u8:3+flush-259:021:35:303
613101991310,2cyclictest686131-21kworker/u8:0+flush-259:020:55:423
613101991310,2cyclictest628858-21cpuspeed_turbos19:25:153
61309699139,3cyclictest559915-21kworker/u8:2+events_unbound19:19:252
61310199129,2cyclictest847337-21kworker/u8:1+flush-259:023:20:283
61310199127,4cyclictest696764-21latency_hist20:30:003
61310199116,4cyclictest759555-21kworker/u8:2+flush-259:022:00:263
61310199106,3cyclictest559915-21kworker/u8:2+events_unbound19:10:223
61309699106,3cyclictest401ktimers/223:50:212
6131019996,2cyclictest800458-21kworker/u8:3+flush-259:023:00:153
6131019991,6cyclictest811343-21apt-get22:20:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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