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2026-07-21 - 16:20

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 Jul 21, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3418014994844,3cyclictest3657550-21kworker/u8:0+events_unbound11:15:010
3418014994539,4cyclictest3626126-21latency_hist10:30:010
3418024994438,4cyclictest335557-21systemd-journal10:00:193
3418020994035,3cyclictest335557-21systemd-journal08:35:002
3418018994035,3cyclictest3438847-21/usr/sbin/munin07:30:241
3418014994035,4cyclictest3521832-21kworker/u8:3+flush-259:009:20:000
3418018993932,5cyclictest3694561-21latency_hist11:35:001
3418014993631,3cyclictest3657550-21kworker/u8:0+events_unbound11:25:200
3418024993530,4cyclictest3469529-21apt-get08:00:013
3418014993531,2cyclictest3374825-21kworker/u8:1+flush-259:007:50:220
3418020993428,4cyclictest3537340-21apt-get09:05:122
3418018993428,4cyclictest3746508-21apt-get12:25:121
3418014993430,3cyclictest3427550-21kworker/u8:3+flush-259:007:24:590
3418014993329,3cyclictest3589820-21kworker/u8:0+events_unbound10:15:180
3418014993329,3cyclictest3454323-21kworker/u8:2+events_unbound08:05:190
3418014993329,3cyclictest3427550-21kworker/u8:3+events_unbound07:15:270
3418014993329,3cyclictest3418205-21kworker/u8:0+events_unbound07:10:180
3418024993126,3cyclictest3684235-21latency_hist11:25:013
3418014993127,3cyclictest3448781-21kworker/u8:0+events_unbound07:55:200
3418014993126,4cyclictest3730910-21apt-get12:10:130
3418020993026,3cyclictest3710057-21kworker/u8:1+flush-259:011:55:202
3418014993027,2cyclictest3563308-21kworker/u8:4+flush-259:009:40:150
3418018992926,2cyclictest3374825-21kworker/u8:1+flush-259:007:40:231
3418018992925,3cyclictest3563950-21apt-get09:30:131
3418018992923,4cyclictest3433695-21/usr/sbin/munin07:25:161
3418014992926,2cyclictest3589820-21kworker/u8:0+flush-259:010:44:590
3418014992925,3cyclictest3725720-21kworker/u8:2+events_unbound12:35:190
3418014992925,3cyclictest3454323-21kworker/u8:2+events_unbound08:05:000
3418024992823,4cyclictest335557-21systemd-journal12:15:003
3418014992825,2cyclictest3605706-21kworker/u8:3+flush-259:010:20:100
3418014992824,3cyclictest3725720-21kworker/u8:2+flush-259:012:20:230
3418024992724,2cyclictest3657550-21kworker/u8:0+flush-259:011:50:173
3418024992723,3cyclictest3459508-21apt-get07:50:103
3418020992723,3cyclictest3500992-21kworker/u8:0+flush-259:008:35:172
3418020992721,4cyclictest509-21rs:main2
3418018992712,6cyclictest3579217-21latency_hist09:45:001
3418014992724,2cyclictest3710057-21kworker/u8:1+events_unbound12:15:190
3418014992723,3cyclictest3626097-21kworker/u8:2+flush-259:010:30:200
3418014992723,3cyclictest3521832-21kworker/u8:3+flush-259:009:05:190
3418014992723,3cyclictest3490884-21apt-get08:20:140
3418020992622,3cyclictest3579445-21kworker/u8:0+flush-259:009:45:192
3418020992622,3cyclictest3469225-21kworker/u8:3+flush-259:008:15:212
3418018992623,2cyclictest3710057-21kworker/u8:1+events_unbound12:05:251
3418018992620,5cyclictest3469531-21latency_hist08:00:011
3418014992622,3cyclictest3657550-21kworker/u8:0+events_unbound12:00:220
3418014992622,3cyclictest3657550-21kworker/u8:0+events_unbound11:40:230
3418014992622,3cyclictest3506355-21kworker/u8:1+events_unbound09:00:230
3418014992620,4cyclictest3506366-21/usr/sbin/munin08:35:160
3418018992523,1cyclictest3527060-21apt-get08:55:131
3418014992521,3cyclictest3710057-21kworker/u8:1+events_unbound12:07:200
3418014992521,3cyclictest3521832-21kworker/u8:3+flush-259:009:25:240
3418014992521,3cyclictest3427550-21kworker/u8:3+events_unbound07:35:120
3418024992421,2cyclictest3521832-21kworker/u8:3+flush-259:009:25:003
3418024992420,3cyclictest3454323-21kworker/u8:2+flush-259:008:20:223
3418020992418,4cyclictest3647202-21latency_hist10:50:002
3418020992418,4cyclictest3636653-21cp10:40:012
3418014992421,2cyclictest3725720-21kworker/u8:2+events_unbound12:25:140
3418014992421,2cyclictest3598940-21kworker/u8:2+events_unbound10:05:220
3418014992421,2cyclictest3589820-21kworker/u8:0+flush-259:010:45:230
3418014992420,3cyclictest3652022-21kworker/u8:3+events_unbound11:00:220
3418014992420,3cyclictest3454323-21kworker/u8:2+events_unbound07:45:180
3418014992420,3cyclictest3374825-21kworker/u8:1+flush-259:007:30:200
3418014992418,5cyclictest3594747-21latency_hist10:00:010
3418014992418,5cyclictest3594747-21latency_hist10:00:010
3418024992319,3cyclictest335557-21systemd-journal10:24:593
3418024992318,3cyclictest3600162-21apt-get10:05:133
3418014992320,2cyclictest3652022-21kworker/u8:3+flush-259:011:55:250
3418024992218,3cyclictest3652022-21kworker/u8:3+flush-259:011:05:173
3418020992219,2cyclictest3506355-21kworker/u8:1+flush-259:008:55:182
3418020992217,4cyclictest335557-21systemd-journal08:44:192
3418018992217,4cyclictest3626097-21kworker/u8:2+flush-259:011:35:261
3418018992210,3cyclictest3679299-21apt-get11:20:121
3418014992219,2cyclictest3626097-21kworker/u8:2+events_unbound11:15:230
3418014992219,2cyclictest3573833-21kworker/u8:1+events_unbound10:00:160
3418014992219,2cyclictest3521832-21kworker/u8:3+flush-259:009:24:440
3418014992219,2cyclictest3454323-21kworker/u8:2+events_unbound08:29:170
3418014992219,2cyclictest3448781-21kworker/u8:0+events_unbound08:10:270
3418020992118,2cyclictest3657550-21kworker/u8:0+flush-259:011:30:012
3418020992117,3cyclictest3475417-21apt-get08:05:132
3418020992117,3cyclictest3433334-21kworker/u8:0+events_unbound07:25:232
3418018992116,3cyclictest335557-21systemd-journal11:15:031
3418014992117,3cyclictest3536767-21kworker/u8:0+events_unbound09:12:200
3418024992016,3cyclictest3537315-21/usr/sbin/munin09:05:133
3418024992013,5cyclictest3589588-21latency_hist09:55:013
3418020992017,2cyclictest0-21swapper/208:00:012
3418020992016,3cyclictest3736052-21kworker/u8:3+flush-259:012:25:262
3418020992016,3cyclictest3589820-21kworker/u8:0+flush-259:010:15:212
3418020992015,3cyclictest509-21rs:main2
3418018992016,3cyclictest3657550-21kworker/u8:0+flush-259:011:55:001
3418018992015,4cyclictest3642085-21kworker/u8:1+flush-259:010:50:251
3418018992015,3cyclictest335557-21systemd-journal09:20:011
3418018992014,4cyclictest335557-21systemd-journal10:19:591
3418014992017,2cyclictest3516466-21kworker/u8:2+events_unbound08:45:250
3418014992017,2cyclictest3506355-21kworker/u8:1+events_unbound08:55:240
3418014992016,3cyclictest3657550-21kworker/u8:0+events_unbound11:51:180
3418014992016,3cyclictest3652022-21kworker/u8:3+flush-259:011:20:060
3418014992016,3cyclictest3427550-21kworker/u8:3+events_unbound07:44:590
3418024991914,3cyclictest3511564-21apt-get08:40:123
3418024991913,4cyclictest3761701-21latency_hist12:40:013
341802499190,18cyclictest1-21systemd11:47:183
3418020991916,2cyclictest0-21swapper/208:15:012
3418020991915,3cyclictest3412819-21kworker/u8:4+events_unbound07:15:192
3418020991915,2cyclictest3657550-21kworker/u8:0+flush-259:011:50:192
3418018991915,3cyclictest3636727-21latency_hist10:40:011
3418018991915,3cyclictest3506355-21kworker/u8:1+flush-259:008:35:271
3418018991913,4cyclictest3423119-21latency_hist07:15:001
3418018991913,4cyclictest335557-21systemd-journal07:39:591
3418014991916,2cyclictest3589820-21kworker/u8:0+flush-259:010:35:110
3418014991915,3cyclictest3521832-21kworker/u8:3+events_unbound09:30:250
3418024991815,2cyclictest3579445-21kworker/u8:0+events_unbound09:45:173
3418020991816,1cyclictest0-21swapper/210:05:002
3418020991815,2cyclictest3684224-21cron11:25:012
3418020991815,2cyclictest3506355-21kworker/u8:1+flush-259:009:00:162
3418020991815,2cyclictest3374825-21kworker/u8:1+flush-259:007:40:172
3418020991813,3cyclictest3626097-21kworker/u8:2+flush-259:011:35:122
3418020991812,4cyclictest3584818-21diskstats09:50:152
3418018991813,4cyclictest3423385-21apt-get07:15:121
3418018991812,4cyclictest335557-21systemd-journal09:03:171
3418014991812,4cyclictest3579479-21apt-get09:45:130
3418024991715,1cyclictest0-21swapper/312:20:003
3418024991714,2cyclictest3657550-21kworker/u8:0+flush-259:011:40:183
3418024991713,3cyclictest3626097-21kworker/u8:2+flush-259:011:10:283
3418024991712,3cyclictest0-21swapper/311:40:003
3418020991712,4cyclictest3673923-21cat11:15:012
3418020991712,3cyclictest3673404-21latency_hist11:15:012
3418014991714,2cyclictest60350irq/132-enp0s29f1:rx-011:30:210
3418014991714,2cyclictest3752056-21irqcore12:30:190
3418014991713,3cyclictest3652022-21kworker/u8:3+events_unbound10:55:250
3418014991713,3cyclictest3469225-21kworker/u8:3+events_unbound08:15:130
3418024991613,2cyclictest3564374-21cut09:30:163
3418024991613,2cyclictest0-21swapper/310:40:013
3418020991614,1cyclictest0-21swapper/209:30:002
3418020991613,2cyclictest3542257-21kworker/u8:2+events_unbound09:19:592
3418020991613,2cyclictest3536767-21kworker/u8:0+flush-259:009:35:152
341802099160,1cyclictest0-21swapper/208:30:012
341801899160,1cyclictest3642044-21grep10:45:001
3418014991613,2cyclictest60350irq/132-enp0s29f1:rx-010:14:520
3418014991612,3cyclictest3652022-21kworker/u8:3+events_unbound11:05:180
3418014991612,2cyclictest0-21swapper/011:50:000
3418024991514,1cyclictest3736052-21kworker/u8:3+flush-259:012:30:003
3418024991512,2cyclictest3506112-21idleruntime-cro08:35:013
3418020991513,1cyclictest0-21swapper/212:35:002
3418020991512,2cyclictest3701040-21kthreadcore11:40:192
3418020991512,2cyclictest3652022-21kworker/u8:3+flush-259:010:55:152
3418020991512,2cyclictest3517732-21kthreadcore08:45:192
3418020991512,2cyclictest3495794-21cron08:25:002
3418018991511,3cyclictest3710057-21kworker/u8:1+flush-259:012:15:171
3418014991513,1cyclictest60350irq/132-enp0s29f1:rx-011:37:580
3418014991513,1cyclictest60350irq/132-enp0s29f1:rx-009:35:140
3418014991512,2cyclictest60350irq/132-enp0s29f1:rx-007:25:090
3418014991512,1cyclictest0-21swapper/009:55:000
3418024991412,1cyclictest0-21swapper/309:40:003
3418024991410,2cyclictest0-21swapper/309:25:183
3418024991410,2cyclictest0-21swapper/308:30:013
3418024991410,2cyclictest0-21swapper/308:00:003
3418024991410,2cyclictest0-21swapper/307:45:183
3418020991411,2cyclictest3725720-21kworker/u8:2+flush-259:012:20:162
3418020991410,3cyclictest3589820-21kworker/u8:0+flush-259:010:40:242
341801899149,3cyclictest3657550-21kworker/u8:0+events_unbound11:10:001
3418018991411,2cyclictest3705140-21apt-get11:45:121
3418018991411,2cyclictest335480-21sshd08:40:181
3418018991410,3cyclictest3756803-21apt-get12:35:111
3418014991412,1cyclictest60350irq/132-enp0s29f1:rx-010:50:140
3418014991412,1cyclictest60350irq/132-enp0s29f1:rx-008:30:230
3418014991410,3cyclictest3506355-21kworker/u8:1+flush-259:008:40:480
341802499139,3cyclictest3652022-21kworker/u8:3+flush-259:012:00:003
341802499139,3cyclictest3637218-21cpuspeed_turbos10:40:133
341802499139,2cyclictest3547394-21cron09:15:003
341802499139,2cyclictest0-21swapper/309:00:013
341802499131,3cyclictest3610681-21awk10:15:003
3418024991310,2cyclictest3656556-21needreboot10:55:183
3418024991310,2cyclictest3521163-21unixbench_singl08:45:273
341802099138,3cyclictest509-21rs:main2
3418020991310,2cyclictest3564372-21irqcore09:30:162
3418020991310,2cyclictest3438966-21cpuspeed_turbos07:30:152
341801899139,3cyclictest3626386-21apt-get10:30:111
341801899139,3cyclictest3547753-21cut09:15:141
3418018991310,2cyclictest3461807-21kthreadcore07:50:151
3418018991310,2cyclictest3454424-21cpuspeed_turbos07:45:151
341801499139,3cyclictest3516466-21kworker/u8:2+events_unbound08:51:050
341802499129,2cyclictest3433786-21cpuspeed_turbos07:25:153
341802499129,1cyclictest0-21swapper/310:15:263
341802499126,4cyclictest335557-21systemd-journal09:45:003
341802499121,8cyclictest3730638-21awk12:10:003
341802099129,2cyclictest3459679-21fschecks_count07:50:122
341802099129,1cyclictest0-21swapper/207:45:252
341801899129,2cyclictest3715872-21irqcore11:55:181
341801899129,2cyclictest3602459-21kthreadcore10:05:191
341801899129,2cyclictest3569554-21irqcore09:35:151
341801899129,2cyclictest3563628-21apt-key09:30:011
341801899128,2cyclictest0-21swapper/107:24:591
341801899120,0cyclictest0-21swapper/108:25:011
341802499119,1cyclictest0-21swapper/310:50:013
341802499119,1cyclictest0-21swapper/308:35:273
341802499118,2cyclictest3647544-21cpuspeed_turbos10:50:133
341802499118,2cyclictest3536193-21ntp_kernel_pll_09:00:223
341802499118,1cyclictest0-21swapper/307:25:013
341802499117,2cyclictest0-21swapper/311:30:183
341802499110,9cyclictest3485497-21awk08:15:003
341802099110,2cyclictest3448952-21awk07:39:592
341801899119,1cyclictest0-21swapper/109:50:011
341801899118,2cyclictest3684577-21cpuspeed_turbos11:25:151
341801899118,2cyclictest3626112-21idleruntime-cro10:30:001
341801899118,2cyclictest3501280-21cpuspeed_turbos08:30:151
341801899118,2cyclictest0-21swapper/109:50:191
341801899116,3cyclictest513-21gdbus08:05:001
341801899111,3cyclictest34970552uname08:25:191
341801899111,2cyclictest3725488-21latency_hist12:05:001
341802499108,1cyclictest0-21swapper/311:15:153
341802499107,2cyclictest3547740-21cpuspeed_turbos09:15:153
341802499107,1cyclictest0-21swapper/312:00:133
341802499107,1cyclictest0-21swapper/308:50:153
341802099107,2cyclictest3657550-21kworker/u8:0+flush-259:011:05:112
341802099107,2cyclictest3590284-21irqcore09:55:192
341802099107,2cyclictest3590284-21irqcore09:55:192
341802099107,1cyclictest0-21swapper/212:35:162
341802099106,3cyclictest3710057-21kworker/u8:1+flush-259:012:15:222
341801899107,1cyclictest0-21swapper/111:40:181
341801899100,3cyclictest3620992-21latency_hist10:25:011
34180249997,1cyclictest3423119-21latency_hist07:15:003
34180209996,2cyclictest3724663-21ntpq12:00:232
34180189997,1cyclictest0-21swapper/110:45:111
34180189996,2cyclictest0-21swapper/112:30:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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