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2026-07-25 - 05:38

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 Sat Jul 25, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
377669023520,6sleep3451irq_work/300:27:473
3458553996035,22cyclictest3519727-21latency_hist20:10:010
3458553995835,20cyclictest3504905-21latency_hist19:55:010
3458558995145,5cyclictest3421532-21kworker/u8:0+flush-8:020:02:521
3458558995144,5cyclictest3505135-21kworker/u8:3+events_unbound21:52:541
3458558995043,5cyclictest3589615-21kworker/u8:2+flush-8:022:22:541
3458558994842,4cyclictest3505135-21kworker/u8:3+events_unbound22:47:541
3458558994738,7cyclictest3718278-21latency_hist23:30:011
3458553994515,6cyclictest3593644-21sshd21:22:520
3458553994422,20cyclictest278-21systemd-journal22:05:510
3458558994334,6cyclictest3688662-21latency_hist23:00:001
3458558994233,6cyclictest278-21systemd-journal23:20:001
3458558994232,8cyclictest278-21systemd-journal22:10:521
3458553994224,16cyclictest3699311-21grep23:12:400
3458562994135,4cyclictest3505135-21kworker/u8:3+flush-8:020:57:532
3458558994134,5cyclictest3718546-21kworker/u8:0+events_unbound23:52:531
3458558994134,5cyclictest3589615-21kworker/u8:2+events_unbound23:57:521
3458553993920,17cyclictest395-21dbus-daemon20:50:000
3458553993826,9cyclictest278-21systemd-journal20:00:000
3458553993818,19cyclictest3757683-21unixbench_singl00:07:570
3458558993732,4cyclictest3505135-21kworker/u8:3+flush-8:021:02:411
3458558993732,4cyclictest3505135-21kworker/u8:3+flush-8:021:02:411
3458553993721,13cyclictest3463634-21latency_hist19:15:010
3458553993720,15cyclictest3778406-21cpuspeed_turbos00:32:390
3458553993719,3cyclictest3496207-21irqrtprio19:47:400
3458553993718,4cyclictest3658507-21unixbench_singl22:27:550
3458553993718,2cyclictest0-21swapper/021:27:390
3458553993717,5cyclictest395-21dbus-daemon23:05:010
3458553993717,5cyclictest395-21dbus-daemon23:05:000
3458553993717,2cyclictest0-21swapper/022:12:460
3458553993716,4cyclictest3678363-21unixbench_singl22:47:560
34648362360,6sleep2371rcuc/219:15:032
3458558993631,4cyclictest3421532-21kworker/u8:0+events_unbound21:12:521
3458558993630,4cyclictest3635197-21irqrtprio22:07:431
3458558993626,7cyclictest3782681-21latency_hist00:35:011
345855399364,3cyclictest3632911-21kthreadcore22:02:460
345855399364,3cyclictest3632911-21kthreadcore22:02:460
3458553993617,3cyclictest868-21mta-sts-daemon23:57:440
3458553993616,4cyclictest3479902-21unixbench_multi19:27:530
34757852350,12sleep3451irq_work/319:27:363
3458562993524,8cyclictest3634194-21cat22:05:002
3458562993524,8cyclictest3634194-21cat22:05:002
3458558993530,3cyclictest3505135-21kworker/u8:3+flush-8:021:42:431
3458558993529,4cyclictest3505135-21kworker/u8:3+flush-8:022:17:401
3458558993528,4cyclictest3480188-21kworker/u8:2+flush-8:019:35:011
3458558993525,7cyclictest278-21systemd-journal19:43:511
3458553993528,5cyclictest3733573-21apt-get23:47:370
3458553993525,8cyclictest3490503-21/usr/sbin/munin19:42:520
3458553993518,4cyclictest3524651-21cron20:15:000
3458553993517,2cyclictest0-21swapper/023:42:370
3458553993513,8cyclictest3773241-21apt-get00:27:380
3458553993510,11cyclictest3579960-21grep21:12:380
3458562993426,6cyclictest3777723-21awk00:30:002
3458558993427,5cyclictest3465839-21apt-get19:17:351
345855399342,8cyclictest575-21snmpd20:52:350
3458553993423,8cyclictest278-21systemd-journal19:36:500
3458553993418,2cyclictest0-21swapper/020:41:520
3458553993416,3cyclictest3768788-21sort00:22:410
3458553993416,3cyclictest3661758-21kthreadcore22:32:440
3458558993329,3cyclictest3421532-21kworker/u8:0+events_unbound19:57:531
3458558993325,6cyclictest3499954-21latency_hist19:50:011
3458553993326,5cyclictest3698524-21basename23:09:590
3458553993324,6cyclictest3624146-21latency_hist21:55:010
3458553993320,2cyclictest3629079-21sendmail22:00:000
3458553993314,3cyclictest0-21swapper/021:47:390
3458553993310,2cyclictest0-21swapper/023:36:310
3458558993227,4cyclictest3748236-21kworker/u8:4+flush-8:000:27:411
3458558993227,4cyclictest3411633-21kworker/u8:1+flush-8:020:47:441
3458558993224,6cyclictest3505135-21kworker/u8:3+flush-8:020:27:491
3458553993215,2cyclictest0-21swapper/000:17:510
3458553993214,3cyclictest3574317-21latency_hist21:05:000
3458553993214,3cyclictest3574317-21latency_hist21:05:000
3458562993125,4cyclictest3762851-21kworker/u8:0+flush-8:000:37:402
3458562993122,7cyclictest3643903-21awk22:15:002
3458558993123,6cyclictest278-21systemd-journal22:32:361
3458553993127,3cyclictest599-21sshd21:17:520
3458562993021,7cyclictest3634563-21aten2_r5power_p22:07:372
3458562993018,9cyclictest278-21systemd-journal00:10:012
3458558993023,5cyclictest3762851-21kworker/u8:0+events_unbound00:37:471
3458558993023,5cyclictest3421532-21kworker/u8:0+flush-8:020:22:511
3458558993022,6cyclictest3470769-21apt-get19:22:351
3458562992925,2cyclictest3708912-21aten2_r5power_e23:22:382
3458562992923,4cyclictest3603860-21unixbench_multi21:32:552
3458562992919,8cyclictest3733130-21turbostat.cron23:45:002
3458558992924,4cyclictest3668253-21kworker/u8:1+flush-8:022:52:401
3458558992924,3cyclictest3757920-21systemd-run00:10:001
3458558992923,4cyclictest3767836-21systemd-run00:20:011
3458558992923,4cyclictest3505135-21kworker/u8:3+flush-8:021:27:581
3458562992823,3cyclictest3654246-21aten2_r5power_c22:27:382
3458558992824,3cyclictest3589615-21kworker/u8:2+flush-8:023:42:501
3458558992823,4cyclictest3703238-21unixbench_singl23:12:551
3458558992820,6cyclictest3673625-21latency_hist22:45:011
3458558992819,7cyclictest3589054-21apt-get21:20:011
345855399288,18cyclictest3629120-21kworker/0:2+events22:22:530
3458562992724,2cyclictest3684457-21fschecks_time22:57:412
3458562992723,3cyclictest3689338-21cpuspeed_turbos23:02:392
3458562992723,3cyclictest3689338-21cpuspeed_turbos23:02:392
3458562992723,2cyclictest3584851-21fschecks_count21:17:402
3458562992719,6cyclictest3573433-21needreboot21:02:482
3458562992719,6cyclictest3573433-21needreboot21:02:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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