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2026-08-04 - 20:24

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 the 376 highest latencies:
System rackeslot4s.osadl.org (updated Tue Aug 04, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2035847996863,4cyclictest75-21kswapd009:42:031
2035853994338,3cyclictest2243695-21base6410:30:013
2035853994138,2cyclictest2129062-21kworker/u8:1+flush-259:009:20:013
2035847994135,4cyclictest335557-21systemd-journal11:49:021
2035853994034,4cyclictest335557-21systemd-journal08:08:023
2035853993731,4cyclictest2373285-21latency_hist12:35:003
2035844993734,2cyclictest1980130-21kworker/u8:3+events_unbound07:35:180
2035847993629,5cyclictest2092618-21latency_hist08:05:011
2035847993529,4cyclictest2342215-21latency_hist12:05:011
2035851993430,3cyclictest1980130-21kworker/u8:3+flush-259:007:36:022
2035847993429,3cyclictest2248940-21apt-get10:35:141
2035844993430,3cyclictest335557-21systemd-journal07:55:000
2035851993329,3cyclictest1980130-21kworker/u8:3+events_unbound10:46:012
2035853993229,2cyclictest2041180-21kworker/u8:2+events_unbound07:25:233
2035851993228,3cyclictest3219561-21kworker/u8:0+flush-259:007:20:252
2035851993228,3cyclictest2362706-21kworker/u8:0+events_unbound12:26:032
2035844993226,4cyclictest2196479-21latency_hist09:45:000
2035851993128,2cyclictest1980130-21kworker/u8:3+events_unbound08:57:032
2035851993127,3cyclictest2290127-21kworker/u8:0+events_unbound11:23:032
2035851993125,4cyclictest2331859-21latency_hist11:55:002
2035851993026,3cyclictest1980130-21kworker/u8:3+flush-259:007:33:222
2035847993025,3cyclictest335557-21systemd-journal11:50:011
2035851992925,3cyclictest2061737-21kworker/u8:1+flush-259:008:05:162
2035847992924,3cyclictest2269682-21apt-get10:55:121
2035853992825,2cyclictest2279987-21kworker/u8:3+flush-259:011:25:003
2035853992825,2cyclictest2118292-21kworker/u8:0+flush-259:008:45:213
2035851992824,3cyclictest2082356-21kworker/u8:2+events_unbound08:30:032
2035853992724,3cyclictest2377397-21kworker/u8:0+flush-259:012:35:263
2035853992724,2cyclictest2175972-21kworker/u8:2+events_unbound09:48:013
2035853992722,3cyclictest2186094-21latency_hist09:35:003
2035853992721,4cyclictest2274595-21latency_hist11:00:013
2035851992724,2cyclictest2337273-21kworker/u8:2+flush-259:012:09:162
2035851992724,2cyclictest1980130-21kworker/u8:3+events_unbound09:34:022
2035851992723,3cyclictest2279987-21kworker/u8:3+events_unbound11:26:022
2035847992722,4cyclictest2367194-21ntpq12:25:211
2035847992720,5cyclictest2118469-21latency_hist08:30:011
2035844992722,4cyclictest2264240-21latency_hist10:50:010
2035853992623,2cyclictest2290127-21kworker/u8:0+events_unbound11:22:033
2035853992623,2cyclictest1980130-21kworker/u8:3+events_unbound08:35:233
2035851992625,1cyclictest2175972-21kworker/u8:2+events_unbound10:25:012
2035851992622,3cyclictest2186118-21kworker/u8:0+events_unbound09:43:022
2035847992623,2cyclictest1980130-21kworker/u8:3+flush-259:009:50:201
2035844992621,4cyclictest335557-21systemd-journal07:35:000
2035844992620,4cyclictest2326965-21apt-get11:50:110
2035844992618,5cyclictest335557-21systemd-journal08:40:020
2035853992523,1cyclictest1980130-21kworker/u8:3+events_unbound08:55:143
2035853992522,2cyclictest2103174-21apt-get08:15:123
2035844992519,4cyclictest2159385-21ntpq09:05:240
2035853992422,2cyclictest2357493-21kworker/u8:2+events_unbound12:19:033
2035853992421,2cyclictest2087733-21apt-get08:00:123
2035853992420,3cyclictest2041180-21kworker/u8:2+events_unbound07:24:033
2035851992421,2cyclictest2319896-21kworker/u8:0+events_unbound12:00:002
2035851992420,3cyclictest335557-21systemd-journal07:13:012
2035851992420,3cyclictest2118292-21kworker/u8:0+events_unbound08:46:032
2035847992420,3cyclictest2280022-21apt-get11:05:121
2035853992320,2cyclictest2061737-21kworker/u8:1+flush-259:008:20:153
2035851992320,2cyclictest1980130-21kworker/u8:3+events_unbound09:55:032
2035851992319,3cyclictest2082356-21kworker/u8:2+events_unbound08:38:342
2035847992319,3cyclictest2186118-21kworker/u8:0+flush-259:010:20:001
2035847992319,3cyclictest2160493-21apt-get09:10:141
2035844992319,3cyclictest2175972-21kworker/u8:2+flush-259:009:35:000
2035853992221,1cyclictest2186118-21kworker/u8:0+events_unbound10:38:023
2035853992220,2cyclictest2170598-21kworker/u8:4+flush-259:009:55:273
2035853992219,2cyclictest2347940-21kworker/u8:3+events_unbound12:29:213
2035853992219,2cyclictest2279770-21kworker/u8:2+flush-259:011:15:173
2035853992219,2cyclictest2186118-21kworker/u8:0+flush-259:010:10:263
2035851992219,2cyclictest1980130-21kworker/u8:3+events_unbound07:15:232
2035851992218,2cyclictest2061737-21kworker/u8:1+events_unbound08:20:172
2035847992216,4cyclictest2217261-21latency_hist10:05:001
2035844992219,2cyclictest2254083-21kworker/u8:4+flush-259:011:05:210
2035844992216,5cyclictest2040068-21ntpq07:10:210
2035853992119,2cyclictest2186118-21kworker/u8:0+events_unbound11:04:013
2035853992118,3cyclictest2118292-21kworker/u8:0+events_unbound09:05:253
2035853992118,2cyclictest3219561-21kworker/u8:0+flush-259:007:45:003
2035853992118,2cyclictest1980130-21kworker/u8:3+events_unbound07:10:173
2035851992118,2cyclictest2279770-21kworker/u8:2+flush-259:011:09:062
2035851992117,3cyclictest2347940-21kworker/u8:3+events_unbound12:30:022
2035851992117,3cyclictest2279770-21kworker/u8:2+events_unbound11:10:142
2035851992117,3cyclictest2175972-21kworker/u8:2+events_unbound09:54:022
2035851992117,3cyclictest1980130-21kworker/u8:3+events_unbound10:15:202
2035851992116,4cyclictest2320628-21ntpq11:40:232
2035847992116,3cyclictest2373553-21apt-get12:35:131
2035844992115,4cyclictest2300642-21store11:25:000
2035853992017,2cyclictest2170598-21kworker/u8:4+events_unbound10:00:153
2035853992017,2cyclictest2118292-21kworker/u8:0+flush-259:009:21:023
2035853992017,2cyclictest2082356-21kworker/u8:2+flush-259:008:30:203
2035853992017,2cyclictest1980130-21kworker/u8:3+flush-259:007:35:163
2035851992017,2cyclictest2186118-21kworker/u8:0+events_unbound10:39:002
2035851992016,3cyclictest2337273-21kworker/u8:2+events_unbound12:10:032
2035851992016,3cyclictest2337273-21kworker/u8:2+events_unbound12:10:032
2035851992016,3cyclictest2254083-21kworker/u8:4+events_unbound11:00:152
2035851992016,3cyclictest2061737-21kworker/u8:1+events_unbound08:15:152
2035851992016,2cyclictest2295266-21sh11:20:002
2035844992017,2cyclictest2056537-21sh07:30:000
2035853991917,2cyclictest2041180-21kworker/u8:2+flush-259:007:15:153
2035853991916,2cyclictest1980130-21kworker/u8:3+events_unbound10:45:123
2035853991913,4cyclictest509-21rs:main3
2035851991916,2cyclictest1980130-21kworker/u8:3+flush-259:010:40:212
2035851991915,3cyclictest2377397-21kworker/u8:0+events_unbound12:39:032
2035851991915,3cyclictest2357493-21kworker/u8:2+events_unbound12:18:022
2035851991915,3cyclictest2118292-21kworker/u8:0+events_unbound09:20:022
2035844991914,3cyclictest2332099-21/usr/sbin/munin11:55:170
2035853991815,2cyclictest2175972-21kworker/u8:2+events_unbound09:50:243
2035853991815,2cyclictest2118292-21kworker/u8:0+events_unbound09:00:233
2035853991815,2cyclictest1980130-21kworker/u8:3+events_unbound10:40:193
2035853991814,3cyclictest2342478-21apt-get12:05:123
2035853991812,5cyclictest2362950-21latency_hist12:25:013
2035851991816,1cyclictest0-21swapper/208:00:002
2035851991815,2cyclictest2300303-21kworker/u8:1+flush-259:011:30:222
2035851991815,2cyclictest0-21swapper/210:55:012
2035851991814,3cyclictest2061737-21kworker/u8:1+events_unbound08:04:022
2035851991814,3cyclictest1980130-21kworker/u8:3+events_unbound10:12:032
2035851991813,3cyclictest2118292-21kworker/u8:0+flush-259:009:05:182
2035847991813,4cyclictest1980130-21kworker/u8:3+flush-259:010:50:011
2035847991813,3cyclictest2319896-21kworker/u8:0+flush-259:011:55:231
2035847991811,5cyclictest2051334-21latency_hist07:25:001
2035844991814,2cyclictest0-21swapper/010:00:000
2035844991811,5cyclictest2190381-21ntpq09:35:230
2035853991714,2cyclictest2238168-21kworker/u8:1+events_unbound10:25:143
2035853991714,2cyclictest1980130-21kworker/u8:3+events_unbound09:28:463
2035853991713,2cyclictest2082339-21sh07:55:003
2035851991714,1cyclictest2191270-21sh09:39:592
2035851991713,3cyclictest3219561-21kworker/u8:0+events_unbound07:27:022
2035851991712,4cyclictest2102060-21ntpq08:10:232
2035847991712,3cyclictest509-21rs:main1
2035847991711,4cyclictest2082339-21latency_hist07:55:011
2035844991714,2cyclictest60350irq/132-enp0s29f1:rx-010:21:500
2035844991714,2cyclictest2102907-21sh08:15:000
2035844991713,3cyclictest2279760-21idleruntime-cro11:05:010
2035844991713,3cyclictest2118292-21kworker/u8:0+flush-259:008:30:310
203584499170,15cyclictest1-21systemd08:28:020
2035853991613,2cyclictest2300303-21kworker/u8:1+events_unbound11:35:273
2035853991612,3cyclictest2300303-21kworker/u8:1+flush-259:011:40:203
2035853991612,3cyclictest2118292-21kworker/u8:0+events_unbound09:10:293
2035853991610,4cyclictest2082356-21kworker/u8:2+flush-259:008:10:153
2035851991614,1cyclictest0-21swapper/212:05:002
2035851991613,2cyclictest2321379-21kworker/u8:4+flush-259:011:45:252
2035851991613,2cyclictest1980130-21kworker/u8:3+events_unbound09:03:022
2035851991613,2cyclictest1980130-21kworker/u8:3+events_unbound08:40:272
2035851991612,3cyclictest2129062-21kworker/u8:1+events_unbound09:14:012
2035847991614,1cyclictest0-21swapper/109:34:591
2035847991613,2cyclictest2238168-21kworker/u8:1+flush-259:010:30:151
203584499169,5cyclictest509-21rs:main0
2035844991614,1cyclictest60350irq/132-enp0s29f1:rx-008:20:190
2035844991613,2cyclictest60350irq/132-enp0s29f1:rx-011:35:190
2035844991613,2cyclictest60350irq/132-enp0s29f1:rx-011:32:000
2035844991613,2cyclictest60350irq/132-enp0s29f1:rx-010:35:230
2035844991613,2cyclictest60350irq/132-enp0s29f1:rx-009:25:230
2035844991613,2cyclictest0-21swapper/010:35:010
2035844991613,2cyclictest0-21swapper/010:30:000
2035853991512,2cyclictest1980130-21kworker/u8:3+events_unbound08:40:213
2035853991512,2cyclictest0-21swapper/311:10:013
2035853991511,3cyclictest2342200-21idleruntime-cro12:05:003
2035853991511,3cyclictest1980130-21kworker/u8:3+events_unbound10:19:023
2035851991511,3cyclictest2129062-21kworker/u8:1+flush-259:008:54:012
2035851991510,4cyclictest2243756-21/usr/sbin/munin10:30:132
2035847991512,2cyclictest2046148-21latency_hist07:20:001
2035847991511,3cyclictest2133958-21cron08:45:001
203584499158,5cyclictest2295272-21latency_hist11:20:020
2035844991513,1cyclictest60350irq/132-enp0s29f1:rx-012:30:240
2035844991513,1cyclictest60350irq/132-enp0s29f1:rx-010:50:130
2035844991513,1cyclictest60350irq/132-enp0s29f1:rx-009:20:520
2035844991513,1cyclictest60350irq/132-enp0s29f1:rx-007:47:020
2035844991512,2cyclictest61150irq/133-enp0s29f1:tx-012:15:240
2035844991512,2cyclictest60350irq/132-enp0s29f1:rx-012:25:010
2035844991512,2cyclictest60350irq/132-enp0s29f1:rx-009:10:250
2035844991512,2cyclictest2318866-21kthreadcore11:40:200
2035853991411,2cyclictest3219561-21kworker/u8:0+events_unbound07:32:253
2035853991411,2cyclictest2186118-21kworker/u8:0+events_unbound10:20:023
2035853991410,3cyclictest2319896-21kworker/u8:0+events_unbound11:55:293
2035851991412,1cyclictest0-21swapper/212:25:002
2035851991411,2cyclictest2186118-21kworker/u8:0+events_unbound10:23:032
2035851991410,3cyclictest2186118-21kworker/u8:0+events_unbound10:59:032
2035851991410,3cyclictest2186118-21kworker/u8:0+events_unbound10:02:022
2035851991410,3cyclictest2175972-21kworker/u8:2+flush-259:010:05:102
2035851991410,3cyclictest2061737-21kworker/u8:1+flush-259:007:44:062
2035851991410,3cyclictest2061737-21kworker/u8:1+events_unbound07:47:022
2035847991410,3cyclictest335557-21systemd-journal10:52:011
2035847991410,3cyclictest2154227-21ntp_offset09:00:231
203584499149,4cyclictest2061737-21kworker/u8:1+flush-259:008:00:210
203584499148,4cyclictest2227610-21latency_hist10:15:000
2035844991412,2cyclictest60350irq/132-enp0s29f1:rx-009:47:370
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-012:29:240
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-012:05:130
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-008:55:260
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-008:09:460
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-007:40:020
2035844991412,1cyclictest60350irq/132-enp0s29f1:rx-007:20:370
2035844991411,2cyclictest60350irq/132-enp0s29f1:rx-011:46:150
2035844991411,2cyclictest60350irq/132-enp0s29f1:rx-010:15:140
2035844991411,2cyclictest60350irq/132-enp0s29f1:rx-010:00:280
2035844991411,2cyclictest60350irq/132-enp0s29f1:rx-009:16:330
2035844991411,2cyclictest2206420-21unixbench_multi09:50:270
2035844991411,1cyclictest0-21swapper/010:45:000
203585399139,3cyclictest2311450-21kworker/u8:3+events_unbound11:50:183
203585399139,3cyclictest2082356-21kworker/u8:2+events_unbound08:26:023
2035853991310,2cyclictest2279770-21kworker/u8:2+events_unbound11:11:033
2035853991310,2cyclictest2191721-21cut09:40:163
203585199138,4cyclictest2165644-21/usr/sbin/munin09:15:232
203585199137,5cyclictest2315454-21ntpq11:35:232
2035851991310,2cyclictest2078484-21kthreadcore07:50:162
203584799138,4cyclictest335557-21systemd-journal08:55:001
203584799138,4cyclictest2254093-21/usr/sbin/munin10:40:151
203584799137,4cyclictest335557-21systemd-journal09:55:001
2035847991311,1cyclictest0-21swapper/111:24:591
2035847991310,2cyclictest2139570-21idleruntime-cro08:50:001
2035847991310,2cyclictest0-21swapper/111:20:021
203584499137,4cyclictest2301014-21cat11:25:010
2035844991312,1cyclictest60350irq/132-enp0s29f1:rx-012:00:150
2035844991312,1cyclictest60350irq/132-enp0s29f1:rx-008:45:200
203585199129,2cyclictest2175972-21kworker/u8:2+events_unbound09:45:142
203585199129,2cyclictest2113703-21cpuspeed_turbos08:25:152
203585199128,3cyclictest2176009-21apt-get09:25:142
203584799129,2cyclictest2316372-21munin-plugin-st11:39:591
203584799129,2cyclictest2128421-21unixbench_singl08:35:251
203584799129,2cyclictest0-21swapper/112:05:181
2035847991210,1cyclictest0-21swapper/108:25:001
203584499129,2cyclictest60350irq/132-enp0s29f1:rx-011:10:130
203585399118,2cyclictest1980130-21kworker/u8:3+events_unbound09:37:283
203585399117,3cyclictest2290127-21kworker/u8:0+events_unbound11:30:183
203585399110,3cyclictest2087476-21awk08:00:003
203584799119,1cyclictest0-21swapper/108:15:001
203584799119,1cyclictest0-21swapper/107:30:181
203584799118,2cyclictest2118292-21kworker/u8:0+flush-259:009:15:171
203584799118,2cyclictest2051777-21fschecks_count07:25:151
203584799116,4cyclictest2180038-21ntpq09:25:241
203584499118,2cyclictest60350irq/132-enp0s29f1:rx-012:10:220
203584499118,2cyclictest60350irq/132-enp0s29f1:rx-012:10:210
203585399107,2cyclictest2254083-21kworker/u8:4+events_unbound10:50:223
203585399105,3cyclictest2347922-21fw_forwarded_lo12:10:153
203585399105,3cyclictest2347922-21fw_forwarded_lo12:10:143
203584799108,1cyclictest0-21swapper/109:05:181
203584799107,2cyclictest2170934-21cpuspeed_turbos09:20:131
20358479997,1cyclictest0-21swapper/111:10:161
20358479996,2cyclictest0-21swapper/107:10:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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