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2026-05-23 - 00:57

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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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 the 792 highest latencies:
System rackeslot4s.osadl.org (updated Fri May 22, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117436994437,5cyclictest178725-21ntpq08:05:231
117441994239,2cyclictest169279-21kworker/u8:3+flush-259:008:30:212
117441994138,2cyclictest290005-21kworker/u8:3+events_unbound10:05:012
117441993936,2cyclictest347733-21kworker/u8:0+events_unbound12:05:242
117433993933,4cyclictest347708-21latency_hist10:50:000
117441993835,2cyclictest347733-21kworker/u8:0+flush-259:011:55:202
117441993734,2cyclictest169279-21kworker/u8:3+flush-259:009:10:002
117441993733,3cyclictest342467-21kworker/u8:1+flush-259:011:00:012
117441993733,3cyclictest163933-21kworker/u8:0+flush-259:008:05:002
117433993734,2cyclictest153416-21kworker/u8:2+flush-259:008:20:000
117433993729,5cyclictest335557-21systemd-journal09:52:060
117436993630,4cyclictest335557-21systemd-journal10:37:051
117441993532,2cyclictest347733-21kworker/u8:0+events_unbound11:10:142
117441993532,2cyclictest236831-21kworker/u8:0+flush-259:009:25:202
117433993531,3cyclictest347733-21kworker/u8:0+flush-259:012:20:000
117433993531,3cyclictest347733-21kworker/u8:0+flush-259:012:20:000
117441993431,2cyclictest64320-21kworker/u8:6+events_unbound07:35:172
117441993431,2cyclictest64320-21kworker/u8:6+events_unbound07:10:212
117441993431,2cyclictest153416-21kworker/u8:2+events_unbound09:00:192
117441993430,3cyclictest169279-21kworker/u8:3+flush-259:008:40:222
117441993330,2cyclictest242185-21kworker/u8:1+flush-259:009:10:232
117441993330,2cyclictest153416-21kworker/u8:2+events_unbound07:50:222
117436993327,4cyclictest174441-21latency_hist08:05:001
117433993329,3cyclictest122780-21kworker/u8:1+flush-259:007:45:260
117443993229,2cyclictest342467-21kworker/u8:1+flush-259:011:05:243
117441993229,2cyclictest64320-21kworker/u8:6+events_unbound09:20:202
117441993229,2cyclictest64320-21kworker/u8:6+events_unbound07:45:202
117441993229,2cyclictest410593-21kworker/u8:2+events_unbound11:50:252
117441993226,4cyclictest332018-21cat10:35:012
117436993226,4cyclictest262677-21ntpq09:25:201
117433993227,4cyclictest64320-21kworker/u8:6+flush-259:008:05:270
117441993129,2cyclictest441256-21kworker/u8:2+events_unbound12:20:142
117441993129,2cyclictest290005-21kworker/u8:3+flush-259:011:00:242
117441993128,2cyclictest456600-21kworker/u8:4+events_unbound12:35:212
117441993128,2cyclictest347733-21kworker/u8:0+flush-259:011:45:002
117441993128,2cyclictest236831-21kworker/u8:0+events_unbound09:50:222
117441993127,3cyclictest332510-21/usr/sbin/munin10:35:132
117441993028,2cyclictest236831-21kworker/u8:0+flush-259:010:05:202
117441993027,2cyclictest236831-21kworker/u8:0+flush-259:009:50:012
117433993025,4cyclictest410631-21apt-get11:50:120
117443992925,3cyclictest64320-21kworker/u8:6+flush-259:008:30:013
117441992926,2cyclictest441256-21kworker/u8:2+flush-259:012:30:162
117441992926,2cyclictest290005-21kworker/u8:3+flush-259:010:20:232
117441992926,2cyclictest257957-21kworker/u8:1+flush-259:009:30:182
117441992926,2cyclictest236831-21kworker/u8:0+flush-259:010:15:132
117433992926,2cyclictest64320-21kworker/u8:6+flush-259:008:00:210
117433992926,2cyclictest430977-21kworker/u8:3+events_unbound12:25:180
117441992825,2cyclictest169279-21kworker/u8:3+events_unbound08:35:202
117441992823,3cyclictest374086-21/usr/sbin/munin11:15:132
117441992725,2cyclictest342467-21kworker/u8:1+events_unbound11:40:002
117441992724,2cyclictest64320-21kworker/u8:6+events_unbound08:55:152
117441992724,2cyclictest347733-21kworker/u8:0+events_unbound12:00:182
117436992722,3cyclictest122780-21kworker/u8:1+flush-259:007:35:001
117433992724,2cyclictest153416-21kworker/u8:2+events_unbound09:05:240
117433992721,5cyclictest455761-21ntpq12:30:190
117433992720,5cyclictest194208-21ntpq08:20:230
117441992624,1cyclictest64320-21kworker/u8:6+flush-259:008:15:232
117441992623,2cyclictest342467-21kworker/u8:1+flush-259:010:50:162
117441992623,2cyclictest153416-21kworker/u8:2+flush-259:008:10:162
117441992622,3cyclictest347733-21kworker/u8:0+events_unbound11:20:152
117441992622,3cyclictest236831-21kworker/u8:0+events_unbound09:35:192
117441992620,4cyclictest335557-21systemd-journal11:30:002
117433992623,2cyclictest236831-21kworker/u8:0+flush-259:009:25:150
117433992622,3cyclictest347733-21kworker/u8:0+events_unbound12:00:220
117433992622,3cyclictest122780-21kworker/u8:1+flush-259:007:25:130
117433992622,3cyclictest122780-21kworker/u8:1+flush-259:007:25:120
117443992521,3cyclictest258108-21base6409:25:013
117443992520,4cyclictest409926-21latency_hist11:49:593
117443992519,4cyclictest278955-21latency_hist09:45:003
117441992522,2cyclictest290005-21kworker/u8:3+flush-259:010:25:162
117441992521,3cyclictest268729-21kworker/u8:3+events_unbound09:40:202
117441992521,3cyclictest163933-21kworker/u8:0+flush-259:008:25:202
117441992521,3cyclictest122780-21kworker/u8:1+flush-259:007:25:012
117441992519,5cyclictest305708-21apt-get10:10:002
117436992520,4cyclictest335557-21systemd-journal09:31:071
117436992519,4cyclictest168358-21ntpq07:55:211
117433992521,3cyclictest347733-21kworker/u8:0+events_unbound11:25:120
117433992520,3cyclictest153416-21kworker/u8:2+flush-259:009:20:200
117433992519,4cyclictest363975-21diskstats11:05:140
117443992421,2cyclictest342467-21kworker/u8:1+events_unbound11:30:243
117443992419,4cyclictest158558-21apt-get07:50:013
117441992421,2cyclictest290005-21kworker/u8:3+events_unbound10:49:542
117441992420,3cyclictest430977-21kworker/u8:3+events_unbound12:25:282
117436992419,3cyclictest446677-21apt-get12:25:111
117441992320,2cyclictest321568-21kworker/u8:2+flush-259:010:40:252
117441992319,3cyclictest169279-21kworker/u8:3+flush-259:008:05:052
117441992319,3cyclictest107365-21kworker/u8:0+flush-259:007:15:202
117441992316,3cyclictest221548-21/usr/sbin/munin08:50:202
117436992321,1cyclictest2971-21cron09:10:001
117436992319,3cyclictest220891-21cut08:50:011
117436992316,5cyclictest235947-21ntpq09:00:201
117433992319,3cyclictest399800-21kworker/u8:4+events_unbound11:45:150
117433992319,3cyclictest290005-21kworker/u8:3+events_unbound10:35:000
117433992319,3cyclictest236831-21kworker/u8:0+flush-259:010:35:210
117433992319,3cyclictest236831-21kworker/u8:0+flush-259:010:05:150
117433992318,4cyclictest290005-21kworker/u8:3+events_unbound11:00:220
117443992219,2cyclictest64320-21kworker/u8:6+events_unbound07:20:003
117443992219,2cyclictest290005-21kworker/u8:3+flush-259:011:35:253
117443992219,2cyclictest257957-21kworker/u8:1+events_unbound09:30:013
117443992218,3cyclictest430977-21kworker/u8:3+events_unbound12:25:223
117443992218,3cyclictest279596-21kworker/u8:4+events_unbound09:45:233
117443992216,5cyclictest335557-21systemd-journal12:25:003
117441992218,3cyclictest64320-21kworker/u8:6+flush-259:007:25:222
117441992218,3cyclictest64320-21kworker/u8:6+flush-259:007:25:222
117441992218,3cyclictest64320-21kworker/u8:6+events_unbound08:45:082
117436992218,3cyclictest441256-21kworker/u8:2+flush-259:012:20:211
117436992218,3cyclictest153416-21kworker/u8:2+events_unbound08:10:251
117433992219,2cyclictest347733-21kworker/u8:0+events_unbound11:20:190
117433992219,2cyclictest257957-21kworker/u8:1+events_unbound09:30:210
117433992218,3cyclictest64320-21kworker/u8:6+events_unbound07:35:190
117433992218,3cyclictest153416-21kworker/u8:2+events_unbound09:35:140
117443992118,2cyclictest64320-21kworker/u8:6+events_unbound08:15:203
117443992118,2cyclictest399800-21kworker/u8:4+events_unbound11:40:223
117443992117,3cyclictest236831-21kworker/u8:0+flush-259:009:15:203
117441992118,2cyclictest342467-21kworker/u8:1+events_unbound11:05:212
117436992118,2cyclictest347733-21kworker/u8:0+flush-259:012:00:251
117436992117,3cyclictest384421-21apt-get11:25:101
117436992116,3cyclictest337651-21/usr/sbin/munin10:40:151
117433992118,2cyclictest64320-21kworker/u8:6+events_unbound08:55:190
117433992118,2cyclictest290005-21kworker/u8:3+flush-259:010:20:210
117433992117,3cyclictest64320-21kworker/u8:6+events_unbound08:35:290
117433992117,3cyclictest247319-21base6409:15:000
117433992116,3cyclictest295126-21cat10:00:010
117443992016,3cyclictest290005-21kworker/u8:3+flush-259:010:25:213
117441992017,2cyclictest64320-21kworker/u8:6+flush-259:007:40:102
117441992016,3cyclictest64320-21kworker/u8:6+events_unbound07:56:092
117441992016,3cyclictest430977-21kworker/u8:3+events_unbound12:10:202
117441992016,3cyclictest279596-21kworker/u8:4+events_unbound09:55:012
117436992016,3cyclictest274083-21/usr/sbin/munin09:40:131
117436992015,4cyclictest430977-21kworker/u8:3+events_unbound12:10:211
117433992016,3cyclictest441256-21kworker/u8:2+events_unbound12:37:070
117433992016,3cyclictest441256-21kworker/u8:2+events_unbound12:20:210
117433992016,3cyclictest347733-21kworker/u8:0+events_unbound11:55:070
117433992016,3cyclictest290005-21kworker/u8:3+flush-259:011:33:120
117433992016,3cyclictest236831-21kworker/u8:0+events_unbound10:00:220
11743399200,19cyclictest1-21systemd11:40:000
117443991915,3cyclictest64320-21kworker/u8:6+flush-259:007:55:233
117443991915,3cyclictest509-21rs:main3
117443991915,3cyclictest441256-21kworker/u8:2+flush-259:012:30:163
117443991915,3cyclictest347733-21kworker/u8:0+events_unbound11:20:223
117443991915,3cyclictest347733-21kworker/u8:0+events_unbound11:10:203
117443991913,4cyclictest335557-21systemd-journal10:24:423
117443991912,5cyclictest153391-21latency_hist07:45:003
117441991916,2cyclictest347733-21kworker/u8:0+flush-259:011:45:252
117441991915,3cyclictest236831-21kworker/u8:0+events_unbound09:15:252
117441991911,5cyclictest440395-21ntpq12:15:212
117441991911,5cyclictest440395-21ntpq12:15:212
117436991916,2cyclictest64320-21kworker/u8:6+events_unbound07:25:181
117436991916,2cyclictest64320-21kworker/u8:6+events_unbound07:25:181
117436991913,4cyclictest394422-21latency_hist11:35:001
117433991916,2cyclictest64320-21kworker/u8:6+events_unbound07:22:070
117433991916,2cyclictest236831-21kworker/u8:0+events_unbound09:15:130
117433991916,2cyclictest211rcuc/007:55:000
117433991915,3cyclictest236831-21kworker/u8:0+events_unbound10:15:150
117433991915,3cyclictest122780-21kworker/u8:1+events_unbound07:41:090
11743399191,16cyclictest490-21dbus-daemon08:15:000
117443991815,2cyclictest64320-21kworker/u8:6+events_unbound08:50:233
117443991815,2cyclictest290005-21kworker/u8:3+events_unbound10:55:233
117443991814,3cyclictest347733-21kworker/u8:0+events_unbound11:55:153
117441991814,3cyclictest64320-21kworker/u8:6+events_unbound07:33:032
117441991814,3cyclictest290005-21kworker/u8:3+flush-259:011:30:042
117441991814,3cyclictest153416-21kworker/u8:2+events_unbound08:20:162
117436991815,2cyclictest342467-21kworker/u8:1+flush-259:011:40:001
117436991814,3cyclictest64320-21kworker/u8:6+flush-259:009:14:591
117436991814,3cyclictest279596-21kworker/u8:4+flush-259:009:55:221
117433991815,2cyclictest290005-21kworker/u8:3+flush-259:011:15:240
117433991814,3cyclictest64320-21kworker/u8:6+events_unbound08:45:230
117433991814,3cyclictest64320-21kworker/u8:6+events_unbound07:16:080
117433991814,3cyclictest64320-21kworker/u8:6+events_unbound07:10:230
117433991814,3cyclictest236831-21kworker/u8:0+flush-259:010:10:130
117433991814,3cyclictest163933-21kworker/u8:0+flush-259:007:55:150
117443991713,3cyclictest410593-21kworker/u8:2+flush-259:011:55:003
117443991713,3cyclictest153416-21kworker/u8:2+flush-259:009:00:223
117436991715,1cyclictest461886-21munin-plugin-st12:40:001
117436991714,2cyclictest342467-21kworker/u8:1+flush-259:010:45:151
117436991714,2cyclictest290005-21kworker/u8:3+events_unbound11:00:201
117436991714,2cyclictest279596-21kworker/u8:4+flush-259:009:45:191
117436991713,3cyclictest290005-21kworker/u8:3+events_unbound11:15:191
117436991713,3cyclictest236831-21kworker/u8:0+flush-259:010:04:371
117436991711,4cyclictest335557-21systemd-journal10:18:071
117433991714,2cyclictest347733-21kworker/u8:0+flush-259:011:10:180
117433991714,2cyclictest268729-21kworker/u8:3+events_unbound09:44:330
117433991713,3cyclictest399800-21kworker/u8:4+events_unbound11:40:230
117433991713,3cyclictest335557-21systemd-journal08:50:020
117443991613,2cyclictest305734-21gpgv10:10:013
117443991613,2cyclictest300579-21munin-plugin-st10:05:013
117443991613,2cyclictest163933-21kworker/u8:0+events_unbound08:30:213
117443991612,3cyclictest236831-21kworker/u8:0+flush-259:010:30:183
117443991612,3cyclictest236831-21kworker/u8:0+flush-259:010:20:013
117443991612,3cyclictest236831-21kworker/u8:0+events_unbound09:50:243
117443991612,3cyclictest153416-21kworker/u8:2+flush-259:008:20:193
117443991612,2cyclictest221282-21latency_hist08:50:013
117436991613,2cyclictest236831-21kworker/u8:0+events_unbound09:15:241
117436991612,3cyclictest122780-21kworker/u8:1+events_unbound07:20:211
117433991613,2cyclictest60350irq/132-enp0s29f1:rx-010:25:230
117433991613,2cyclictest60350irq/132-enp0s29f1:rx-007:32:270
117433991611,3cyclictest163933-21kworker/u8:0+flush-259:008:34:120
117443991512,2cyclictest419741-21kworker/u8:1+flush-259:012:05:153
117443991512,2cyclictest236831-21kworker/u8:0+events_unbound10:10:213
117443991512,2cyclictest169279-21kworker/u8:3+flush-259:008:05:163
117443991511,3cyclictest347733-21kworker/u8:0+flush-259:011:25:243
11743699159,4cyclictest335557-21systemd-journal11:59:591
117436991511,3cyclictest117646-21apt-get07:10:111
117436991510,4cyclictest230726-21ntpq08:55:191
117436991510,3cyclictest335557-21systemd-journal11:45:011
117433991513,1cyclictest60350irq/132-enp0s29f1:rx-010:57:310
117433991513,1cyclictest60350irq/132-enp0s29f1:rx-009:00:250
117433991512,2cyclictest60350irq/132-enp0s29f1:rx-012:10:120
117433991512,2cyclictest60350irq/132-enp0s29f1:rx-009:49:090
117433991511,3cyclictest169279-21kworker/u8:3+events_unbound08:44:100
11744399149,3cyclictest358428-21grep11:00:153
11744399147,5cyclictest247591-21cat09:15:013
117443991410,3cyclictest64320-21kworker/u8:6+events_unbound07:45:193
11743699148,4cyclictest330989-21ntpq10:30:211
117436991411,2cyclictest441228-21idleruntime-cro12:20:001
117436991411,2cyclictest441228-21idleruntime-cro12:20:001
117436991410,3cyclictest347733-21kworker/u8:0+events_unbound11:20:211
117436991410,3cyclictest122780-21kworker/u8:1+flush-259:007:45:011
117433991412,1cyclictest60350irq/132-enp0s29f1:rx-012:05:240
117433991412,1cyclictest60350irq/132-enp0s29f1:rx-010:50:150
117433991410,3cyclictest290005-21kworker/u8:3+flush-259:010:40:070
11744399139,3cyclictest430977-21kworker/u8:3+flush-259:012:10:233
11744399139,3cyclictest153416-21kworker/u8:2+events_unbound09:05:153
11744399138,4cyclictest273839-21latency_hist09:40:013
117443991310,2cyclictest290005-21kworker/u8:3+events_unbound10:40:143
11743699133,1cyclictest1563312cut07:45:181
117436991311,1cyclictest0-21swapper/110:20:181
11744399129,2cyclictest351661-21kthreadcore10:50:173
11744399129,2cyclictest236831-21kworker/u8:0+events_unbound09:25:213
11744399128,3cyclictest163933-21kworker/u8:0+events_unbound08:00:183
11744399127,4cyclictest236831-21kworker/u8:0+flush-259:010:39:363
117443991210,1cyclictest0-21swapper/307:10:203
117436991210,1cyclictest0-21swapper/108:50:171
11744399118,2cyclictest290005-21kworker/u8:3+events_unbound11:15:223
11743699118,2cyclictest419741-21kworker/u8:1+events_unbound12:05:141
11743699117,3cyclictest205643-21apt-get08:35:131
11743699108,1cyclictest0-21swapper/108:40:131
11743699108,1cyclictest0-21swapper/108:20:171
11743699107,2cyclictest0-21swapper/109:24:591
11743399108,2cyclictest61150irq/133-enp0s29f1:tx-008:25:180
1174369997,1cyclictest0-21swapper/110:50:151
1174369995,2cyclictest832-21runrttasks11:42:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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