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2026-06-18 - 15:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Thu Jun 18, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
353768221790,2sleep375-21kworker/3:1+events07:15:003
37823952980,2chrt0-21swapper/211:15:412
37034402830,5sleep10-21swapper/110:00:011
3532658997260,9cyclictest1704890-21systemd-journal12:35:000
3532664997063,5cyclictest3527656-21kworker/u8:1+flush-8:008:20:422
3532660996762,4cyclictest3527656-21kworker/u8:1+flush-8:008:15:411
3532658996647,16cyclictest3553589-21ntpq07:25:380
3532660996459,4cyclictest3713058-21kworker/u8:2+events_unbound12:20:011
3532660996456,5cyclictest3727345-21ntpq10:20:381
3532660996456,5cyclictest3727345-21ntpq10:20:381
3532660996358,4cyclictest3527656-21kworker/u8:1+events_unbound07:30:441
3532660996354,7cyclictest3517865-21kworker/u8:3+flush-8:007:35:381
3532660996257,3cyclictest3713058-21kworker/u8:2+flush-8:011:05:421
3532660996054,4cyclictest3527656-21kworker/u8:1+flush-8:007:55:261
3532660996050,7cyclictest3828890-21kworker/u8:0+flush-8:012:20:371
36873912590,4sleep0201rcuc/009:40:320
3532660995953,4cyclictest3771820-21kworker/u8:1+events_unbound11:30:401
3532660995951,5cyclictest3636635-21kworker/u8:3+events_unbound09:40:251
3532660995852,4cyclictest3713058-21kworker/u8:2+events_unbound11:00:381
3532660995851,5cyclictest3778121-21kworker/u8:3+events_unbound11:25:361
3532660995847,8cyclictest3642820-21ntpq08:55:351
38121592570,4sleep13812164-21unixbench_singl11:45:421
3532664995752,3cyclictest3713058-21kworker/u8:2+flush-8:010:15:362
3532664995752,3cyclictest3713058-21kworker/u8:2+flush-8:010:15:352
3532660995751,4cyclictest3699353-21kworker/u8:0+flush-8:010:15:391
3532660995751,4cyclictest3699353-21kworker/u8:0+flush-8:010:15:381
3532660995750,5cyclictest3517865-21kworker/u8:3+flush-8:008:05:351
3532658995748,7cyclictest3768021-21/usr/sbin/munin11:05:340
3532660995650,4cyclictest3828890-21kworker/u8:0+events_unbound12:25:241
3532660995650,4cyclictest3678199-21kworker/u8:0+events_unbound09:35:351
3532660995649,5cyclictest3475599-21kworker/u8:2+flush-8:007:10:411
3532660995549,4cyclictest3574247-21kworker/u8:2+events_unbound08:40:331
3532660995548,5cyclictest3527656-21kworker/u8:1+events_unbound08:30:001
3532658995548,5cyclictest3796784-21ntpq11:30:340
3532660995447,5cyclictest3663329-21kworker/u8:1+events_unbound09:30:391
3532660995445,6cyclictest3653791-21latency_hist09:10:011
3532658995445,6cyclictest3732207-21ntpq10:25:340
3532660995348,3cyclictest3828890-21kworker/u8:0+events_unbound12:35:401
3532660995343,8cyclictest3802929-21/usr/sbin/munin11:40:381
3532660995246,5cyclictest3713058-21kworker/u8:2+flush-8:012:10:411
3532660995245,4cyclictest3778121-21kworker/u8:3+flush-8:011:20:261
3532658995245,5cyclictest1704890-21systemd-journal10:20:400
3532658995245,5cyclictest1704890-21systemd-journal10:20:390
3532660995145,4cyclictest3699353-21kworker/u8:0+events_unbound10:10:381
3532660995143,6cyclictest3742070-21ntpq10:35:351
3532658995143,6cyclictest3662790-21ntpq09:15:360
3532658995142,6cyclictest3574231-21latency_hist07:50:010
3532658995142,6cyclictest3574231-21latency_hist07:50:000
3532658995141,7cyclictest1704890-21systemd-journal08:20:010
3532660995045,3cyclictest3517865-21kworker/u8:3+flush-8:007:20:001
3532660995043,4cyclictest3636635-21kworker/u8:3+flush-8:009:45:401
3532658995028,19cyclictest3817708-21/usr/sbin/munin11:55:360
3532664994944,3cyclictest3636635-21kworker/u8:3+flush-8:010:00:392
3532660994942,5cyclictest3626875-21kworker/u8:0+flush-8:009:00:361
3532658994942,4cyclictest3475599-21kworker/u8:2+flush-8:007:10:310
3532658994941,5cyclictest3637796-21ntpq08:50:340
3532660994842,4cyclictest3574247-21kworker/u8:2+events_unbound09:20:361
3532660994841,6cyclictest3771820-21kworker/u8:1+flush-8:011:55:361
3532660994841,5cyclictest3517865-21kworker/u8:3+flush-8:008:00:351
3532658994841,5cyclictest3629092-21/usr/sbin/munin08:45:390
3532658994840,6cyclictest3698352-21latency_hist09:55:010
3532658994739,6cyclictest3791942-21ntpq11:25:360
3532664994641,3cyclictest3517865-21kworker/u8:3+events_unbound07:40:352
3532660994641,4cyclictest3748207-21kworker/u8:0+events_unbound10:55:261
3532660994641,4cyclictest3517865-21kworker/u8:3+flush-8:007:25:361
3532660994641,3cyclictest3713058-21kworker/u8:2+events_unbound10:30:391
3532660994641,3cyclictest3527656-21kworker/u8:1+flush-8:007:40:321
3532660994640,4cyclictest3713058-21kworker/u8:2+events_unbound11:10:431
3532660994640,4cyclictest3663329-21kworker/u8:1+events_unbound10:05:401
3532660994639,5cyclictest3626875-21kworker/u8:0+flush-8:008:45:401
3532664994539,5cyclictest3574247-21kworker/u8:2+flush-8:008:55:372
3532664994539,4cyclictest3574247-21kworker/u8:2+flush-8:008:35:372
3532660994541,3cyclictest3527656-21kworker/u8:1+events_unbound07:45:411
3532660994541,3cyclictest3527656-21kworker/u8:1+events_unbound07:45:411
3532660994539,4cyclictest3517865-21kworker/u8:3+events_unbound08:20:251
3532660994538,5cyclictest3527656-21kworker/u8:1+flush-8:007:20:361
3532664994438,4cyclictest3713058-21kworker/u8:2+events_unbound11:55:432
3532660994439,4cyclictest3636635-21kworker/u8:3+events_unbound09:10:281
3532660994438,5cyclictest3778121-21kworker/u8:3+events_unbound12:05:371
3532660994438,5cyclictest3713058-21kworker/u8:2+flush-8:012:00:351
3532660994437,5cyclictest3574247-21kworker/u8:2+flush-8:009:25:391
3532658994434,7cyclictest3568388-21ntpq07:40:370
3532658994424,17cyclictest3851456-21ntpq12:25:340
3532664994338,4cyclictest3574247-21kworker/u8:2+flush-8:009:05:402
3532660994337,4cyclictest3574247-21kworker/u8:2+flush-8:009:15:351
3532658994333,7cyclictest1704890-21systemd-journal07:20:000
3532658994325,16cyclictest3703300-21cron10:00:000
3532660994237,4cyclictest3713058-21kworker/u8:2+flush-8:010:45:371
3532660994237,3cyclictest3728395-21kworker/u8:4+events_unbound10:25:231
3532658994220,8cyclictest1704890-21systemd-journal10:04:590
35284072423,31sleep30-21swapper/307:05:303
3532664994137,3cyclictest3828890-21kworker/u8:0+flush-8:012:30:382
3532664994135,4cyclictest3778121-21kworker/u8:3+flush-8:011:50:262
3532664994131,8cyclictest1704890-21systemd-journal09:32:152
3532660994034,4cyclictest3636635-21kworker/u8:3+flush-8:009:50:371
3532658994025,13cyclictest3771820-21kworker/u8:1+flush-8:012:00:300
3532658994024,14cyclictest3555208-21irqcore07:30:310
3532658994021,17cyclictest3713286-21sh10:10:000
3532658994021,17cyclictest3593120-21ntp_kernel_pll_08:05:340
3532658994015,3cyclictest421rcuog/211:45:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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