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2026-08-28 - 19:27

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 Fri Aug 28, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2745905996652,9cyclictest2975751-21apt-get10:50:130
2745914995246,4cyclictest335557-21systemd-journal08:25:002
2745917995146,3cyclictest3038628-21apt-get11:50:143
2745917995046,3cyclictest3012142-21kworker/u8:3+flush-259:011:40:243
2745910995047,2cyclictest2818931-21kworker/u8:2+events_unbound08:35:241
2745910994843,4cyclictest2792906-21kworker/u8:0+flush-259:008:00:111
2745914994539,4cyclictest2856154-21cp08:55:012
2745910994340,2cyclictest3022500-21kworker/u8:2+events_unbound11:50:271
2745905994338,3cyclictest2708129-21kworker/u8:4+flush-259:007:30:110
2745910994237,3cyclictest2792906-21kworker/u8:0+flush-259:008:05:241
2745914994135,4cyclictest3064441-21apt-get12:15:132
2745905994134,5cyclictest2855637-21gpgv08:55:000
2745914993933,4cyclictest3080325-21base6412:30:022
2745910993935,3cyclictest2892354-21apt-get09:30:101
2745910993933,4cyclictest2861096-21latency_hist09:00:001
2745910993933,4cyclictest2681699-21kworker/u8:2+flush-259:007:50:111
2745917993632,3cyclictest2850367-21kworker/u8:0+flush-259:009:35:213
2745910993630,4cyclictest2959912-21latency_hist10:35:001
2745917993529,4cyclictest2991726-21apt-get11:05:123
2745910993531,3cyclictest2949135-21kworker/u8:2+flush-259:010:55:231
2745914993326,5cyclictest2797313-21ntpq07:55:202
2745910993329,3cyclictest3069396-21kworker/u8:0+events_unbound12:25:111
2745914993228,3cyclictest2850367-21kworker/u8:0+flush-259:009:30:162
2745910993227,3cyclictest2761463-21kworker/u8:0+flush-259:007:25:211
2745905993227,3cyclictest2881969-21kworker/u8:4+flush-259:009:30:000
2745905993125,4cyclictest2923510-21apt-get10:00:110
2745905993125,4cyclictest2902804-21apt-get09:40:100
2745917993026,3cyclictest2991199-21cat11:05:013
2745917993026,3cyclictest2772077-21gpgv07:35:013
2745905993024,4cyclictest2933769-21base6410:10:010
2745917992925,3cyclictest2887175-21/usr/sbin/munin09:25:133
2745910992925,3cyclictest3048924-21kworker/u8:3+events_unbound12:35:101
2745910992925,3cyclictest3001858-21kworker/u8:1+events_unbound11:35:201
2745914992824,3cyclictest3017541-21apt-get11:30:112
2745910992821,5cyclictest335557-21systemd-journal12:25:001
2745917992723,2cyclictest2928687-21apt-get10:05:113
2745914992721,4cyclictest2918082-21latency_hist09:55:012
2745917992620,4cyclictest2845219-21latency_hist08:45:013
2745910992623,2cyclictest2708129-21kworker/u8:4+events_unbound07:30:151
2745905992621,4cyclictest2850367-21kworker/u8:0+flush-259:009:35:130
2745905992621,3cyclictest2991567-21base6411:05:010
2745917992520,3cyclictest509-21rs:main3
2745910992522,2cyclictest2681699-21kworker/u8:2+events_unbound07:15:221
2745910992521,3cyclictest3059230-21kworker/u8:4+flush-259:012:15:161
2745910992521,3cyclictest2824077-21kworker/u8:3+flush-259:009:10:201
2745910992520,4cyclictest2740760-21kworker/u8:1+events_unbound07:45:241
2745910992520,3cyclictest2740760-21kworker/u8:1+events_unbound07:40:111
2745910992519,4cyclictest335557-21systemd-journal12:30:021
2745905992519,4cyclictest2986125-21apt-get11:00:100
2745910992421,1cyclictest0-21swapper/107:10:011
2745910992420,3cyclictest2892120-21kworker/u8:2+events_unbound09:50:211
2745910992419,3cyclictest2829916-21/usr/sbin/munin08:30:131
274590599240,22cyclictest335557-21systemd-journal08:25:280
2745914992318,4cyclictest3001858-21kworker/u8:1+events_unbound11:25:142
2745910992320,2cyclictest2850367-21kworker/u8:0+flush-259:009:00:251
2745910992319,3cyclictest2881969-21kworker/u8:4+events_unbound09:27:291
2745910992318,3cyclictest335557-21systemd-journal12:03:291
2745917992219,2cyclictest2938437-21kworker/u8:3+flush-259:010:24:593
2745914992219,2cyclictest2949135-21kworker/u8:2+flush-259:011:15:172
2745910992218,3cyclictest2850367-21kworker/u8:0+events_unbound09:40:231
2745905992217,3cyclictest3002081-21apt-get11:15:120
274590599220,20cyclictest1-21systemd10:20:260
2745917992115,4cyclictest2871831-21diskstats09:10:143
2745914992117,3cyclictest3079830-21gpgv12:30:002
2745914992116,3cyclictest2866269-21latency_hist09:05:002
2745910992118,2cyclictest2881969-21kworker/u8:4+events_unbound10:00:201
2745910992117,3cyclictest2818931-21kworker/u8:2+flush-259:008:45:001
2745910992117,3cyclictest2808517-21kworker/u8:1+events_unbound08:20:271
2745910992117,3cyclictest2708129-21kworker/u8:4+flush-259:007:55:191
2745910992114,5cyclictest3022451-21latency_hist11:35:001
2745905992117,3cyclictest3048924-21kworker/u8:3+flush-259:012:30:110
274590599210,19cyclictest335557-21systemd-journal11:58:260
2745917992017,2cyclictest2970316-21idleruntime-cro10:44:593
2745917992016,3cyclictest3048924-21kworker/u8:3+flush-259:012:05:003
2745910992017,2cyclictest3038372-21idleruntime-cro11:50:011
2745910992017,2cyclictest2975716-21kworker/u8:0+flush-259:010:55:001
2745910992017,2cyclictest2907723-21kworker/u8:1+flush-259:010:20:191
2745910992017,2cyclictest2824077-21kworker/u8:3+flush-259:009:15:241
2745910992014,4cyclictest335557-21systemd-journal08:48:281
2745914991916,2cyclictest2740760-21kworker/u8:1+flush-259:007:50:232
2745914991914,3cyclictest2772568-21cat07:35:012
2745910991917,1cyclictest2928445-21kworker/u8:0+events_unbound10:15:251
2745910991915,3cyclictest2850367-21kworker/u8:0+flush-259:009:35:151
274590599191,17cyclictest509-21rs:main0
2745917991814,3cyclictest2792906-21kworker/u8:0+flush-259:008:15:163
2745914991815,2cyclictest3032885-21kworker/u8:0+flush-259:011:50:222
2745914991815,2cyclictest2881969-21kworker/u8:4+flush-259:009:25:232
2745914991814,3cyclictest3027607-21apt-get11:40:012
2745914991813,4cyclictest2980664-21latency_hist10:55:002
2745910991815,2cyclictest3048924-21kworker/u8:3+flush-259:012:10:161
2745910991814,3cyclictest3001858-21kworker/u8:1+events_unbound11:25:221
2745910991814,3cyclictest2971-21cron10:49:591
2745910991813,3cyclictest2892120-21kworker/u8:2+events_unbound09:55:201
2745910991812,4cyclictest2824750-21apt-get08:25:131
2745905991816,1cyclictest2892120-21kworker/u8:2+flush-259:010:10:120
2745905991815,2cyclictest335557-21systemd-journal11:34:190
2745905991815,2cyclictest2814429-21irqcore08:15:160
2745905991813,1cyclictest60350irq/132-enp0s29f1:rx-007:15:140
2745917991714,2cyclictest2949135-21kworker/u8:2+flush-259:010:50:013
2745914991714,2cyclictest2971-21cron08:40:002
2745914991714,2cyclictest2970299-21idleruntime-cro10:45:002
2745910991714,2cyclictest2975716-21kworker/u8:0+flush-259:011:20:221
2745910991714,2cyclictest2892120-21kworker/u8:2+events_unbound10:05:141
2745910991713,3cyclictest2740760-21kworker/u8:1+flush-259:007:35:411
2745905991712,3cyclictest335557-21systemd-journal08:23:290
2745905991711,4cyclictest335557-21systemd-journal08:10:000
2745905991711,4cyclictest2762032-21diskstats07:25:130
2745917991612,3cyclictest490-21dbus-daemon12:30:003
2745917991612,3cyclictest2818931-21kworker/u8:2+flush-259:009:01:123
2745917991612,2cyclictest3059230-21kworker/u8:4+flush-259:012:15:203
2745914991611,3cyclictest3007230-21/usr/sbin/munin11:20:142
2745914991610,4cyclictest3074515-21latency_hist12:25:022
2745910991613,2cyclictest3032255-21ntp_kernel_err11:40:181
2745910991612,3cyclictest2938437-21kworker/u8:3+events_unbound10:35:211
2745910991612,3cyclictest2824077-21kworker/u8:3+events_unbound08:50:181
2745910991612,3cyclictest2708129-21kworker/u8:4+flush-259:007:10:231
2745910991611,3cyclictest2892120-21kworker/u8:2+events_unbound10:10:101
2745905991614,1cyclictest60350irq/132-enp0s29f1:rx-009:50:280
2745905991614,1cyclictest60350irq/132-enp0s29f1:rx-007:37:310
2745905991613,2cyclictest60350irq/132-enp0s29f1:rx-012:10:140
2745905991613,2cyclictest60350irq/132-enp0s29f1:rx-010:16:470
2745905991613,2cyclictest60350irq/132-enp0s29f1:rx-009:45:240
2745905991613,2cyclictest60350irq/132-enp0s29f1:rx-009:30:120
2745905991612,2cyclictest2761619-21turbostat07:25:000
274590599161,14cyclictest3069351-21idleruntime-cro12:20:010
2745905991611,3cyclictest60350irq/132-enp0s29f1:rx-012:20:170
2745905991610,4cyclictest335557-21systemd-journal08:57:280
2745917991512,2cyclictest2880874-21ntp_kernel_pll_09:15:223
2745917991512,2cyclictest2835511-21irqcore08:35:163
2745917991512,2cyclictest2790425-21kthreadcore07:50:173
2745917991512,1cyclictest0-21swapper/308:15:003
2745917991511,3cyclictest2939159-21latency_hist10:15:013
274591799150,11cyclictest2871431-21/usr/sbin/munin09:10:003
2745914991513,1cyclictest3090430-21idleruntime-cro12:40:002
2745914991513,1cyclictest2965096-21idleruntime-cro10:39:592
2745914991513,1cyclictest0-21swapper/207:35:012
2745914991512,2cyclictest0-21swapper/210:10:012
2745910991512,2cyclictest2850367-21kworker/u8:0+flush-259:009:05:201
2745910991512,2cyclictest2681699-21kworker/u8:2+flush-259:007:20:191
2745910991512,1cyclictest0-21swapper/109:25:001
2745910991511,3cyclictest2975716-21kworker/u8:0+events_unbound11:00:151
2745910991511,3cyclictest2808517-21kworker/u8:1+events_unbound08:19:281
2745905991514,1cyclictest60350irq/132-enp0s29f1:rx-010:58:310
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-012:25:380
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-012:04:180
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-011:45:220
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-011:35:280
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-010:45:190
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-010:35:130
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-009:03:160
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-008:40:140
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-008:12:180
2745905991513,1cyclictest60350irq/132-enp0s29f1:rx-007:50:170
2745905991512,2cyclictest60350irq/132-enp0s29f1:rx-012:09:230
2745905991512,2cyclictest60350irq/132-enp0s29f1:rx-009:16:300
2745905991512,2cyclictest60350irq/132-enp0s29f1:rx-009:13:370
2745905991512,2cyclictest60350irq/132-enp0s29f1:rx-008:04:460
274591499149,3cyclictest509-21rs:main2
274591499148,4cyclictest2970573-21apt-get10:45:112
2745914991412,1cyclictest2751264-21cron07:15:002
2745914991411,2cyclictest2783374-21irqcore07:45:162
2745914991411,2cyclictest2751605-21cpuspeed_turbos07:15:122
2745910991411,2cyclictest2949584-21kworker/u8:4+events_unbound10:40:141
2745905991413,1cyclictest60350irq/132-enp0s29f1:rx-010:30:170
2745905991412,1cyclictest60350irq/132-enp0s29f1:rx-011:25:150
2745905991412,1cyclictest60350irq/132-enp0s29f1:rx-009:20:140
2745905991412,1cyclictest60350irq/132-enp0s29f1:rx-008:35:080
2745905991411,2cyclictest60350irq/132-enp0s29f1:rx-011:10:110
2745905991411,2cyclictest60350irq/132-enp0s29f1:rx-007:40:180
2745905991411,2cyclictest2824077-21kworker/u8:3+flush-259:008:45:250
2745905991410,3cyclictest2892120-21kworker/u8:2+flush-259:010:00:010
274591799138,4cyclictest2922423-21ntpq09:55:213
2745917991310,2cyclictest2949135-21kworker/u8:2+events_unbound10:25:243
2745917991310,2cyclictest2892120-21kworker/u8:2+flush-259:009:45:243
2745917991310,2cyclictest2824842-21cpuspeed_turbos08:25:143
2745917991310,2cyclictest2681699-21kworker/u8:2+flush-259:007:15:233
274591499139,3cyclictest2808839-21apt-get08:10:112
274591499138,3cyclictest3059004-21latency_hist12:10:012
274591499138,3cyclictest2808576-21latency_hist08:10:002
274591499137,4cyclictest3064179-21latency_hist12:15:002
274591499134,2cyclictest832-21runrttasks08:15:212
2745914991310,2cyclictest2954771-21munin-plugin-st10:30:002
274591099139,3cyclictest2949825-21apt-get10:25:121
2745910991310,2cyclictest2949135-21kworker/u8:2+events_unbound11:07:291
274590599139,3cyclictest60350irq/132-enp0s29f1:rx-007:55:110
274590599136,5cyclictest3033187-21latency_hist11:45:000
2745905991310,2cyclictest60350irq/132-enp0s29f1:rx-011:54:170
2745905991310,2cyclictest60350irq/132-enp0s29f1:rx-009:05:140
274591799129,2cyclictest3022891-21fschecks_count11:35:153
274591799129,2cyclictest2819236-21cpuspeed_turbos08:20:123
274591799129,2cyclictest2750793-21unixbench_multi07:10:233
274591799129,1cyclictest0-21swapper/311:10:253
274591799128,3cyclictest3022438-21cron11:35:003
274591799128,3cyclictest2708129-21kworker/u8:4+flush-259:007:20:233
274591799120,10cyclictest2861111-21awk09:00:003
274591499129,2cyclictest2991793-21cpuspeed_turbos11:05:132
274591499127,3cyclictest2912746-21sshd09:48:282
2745914991210,1cyclictest2762282-21irqcore07:25:162
2745914991210,1cyclictest0-21swapper/208:55:002
274591099129,2cyclictest2892120-21kworker/u8:2+events_unbound09:45:241
274591099128,3cyclictest335557-21systemd-journal11:11:191
274591099124,4cyclictest3032885-21kworker/u8:0+events_unbound12:05:131
274590599127,4cyclictest3007256-21apt-get11:20:110
274591799119,1cyclictest2220904-21kworker/3:0+events_power_efficient07:35:183
274591799111,2cyclictest2918073-21basename09:55:013
274591499119,1cyclictest0-21swapper/207:25:002
274591499118,1cyclictest0-21swapper/208:40:162
274591499116,4cyclictest2902526-21cron09:40:002
274590599117,2cyclictest2954314-21unixbench_singl10:25:260
274591799108,1cyclictest0-21swapper/307:30:003
274591799107,2cyclictest3047725-21cut11:55:203
274591799107,2cyclictest2830007-21cpuspeed_turbos08:30:123
274591799105,4cyclictest3036958-21kthreadcore11:45:153
274591499107,2cyclictest2871891-21fschecks_time09:10:142
274591499105,3cyclictest335557-21systemd-journal10:15:022
274591099106,3cyclictest2808517-21kworker/u8:1+events_unbound08:10:021
274590599108,1cyclictest0-21swapper/010:40:160
27459179993,4cyclictest3054278-21df12:05:123
27459149995,3cyclictest3033442-21awk11:45:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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