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2026-08-03 - 20:22

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 Mon Aug 03, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26450902770,6chrt0-21swapper/208:28:012
27269222590,5chrt0-21swapper/209:52:542
2564819995445,6cyclictest2735963-21latency_hist10:00:001
2564819994940,6cyclictest2651810-21latency_hist08:35:011
2564820994540,3cyclictest1767997-21kworker/u8:4+events_unbound08:15:022
2564820994337,4cyclictest2606878-21gpgv07:50:002
2564815994233,6cyclictest2815625-21latency_hist11:20:010
2564815994226,11cyclictest275-21systemd-journal07:40:010
2564819994131,7cyclictest2676569-21cat09:00:001
2564820994029,9cyclictest2825509-21cat11:30:002
2564815994031,6cyclictest1767997-21kworker/u8:4+flush-8:008:08:020
28044212390,6sleep30-21swapper/311:08:023
2564820993930,7cyclictest2880415-21awk12:25:002
2564815993928,8cyclictest275-21systemd-journal10:33:060
2564820993834,3cyclictest2770494-21kworker/u8:2+flush-8:010:43:132
2564820993834,3cyclictest2671619-21kworker/u8:1+flush-8:009:33:042
2564820993732,4cyclictest2701353-21kworker/u8:3+events_unbound10:08:022
2564815993732,4cyclictest2516580-21kworker/u8:1+flush-8:008:02:570
2564815993724,10cyclictest275-21systemd-journal08:45:000
2564820993631,4cyclictest2571915-21kworker/u8:0+flush-8:007:57:592
2564819993631,3cyclictest2671619-21kworker/u8:1+events_unbound10:30:011
2564815993630,4cyclictest2581818-21unin-run07:25:010
2564815993624,9cyclictest275-21systemd-journal09:40:000
2564815993622,10cyclictest2647044-21cp08:30:010
2564820993531,3cyclictest2770494-21kworker/u8:2+events_unbound11:00:002
2564819993529,4cyclictest2657771-21journal-offline08:42:541
2564819993527,6cyclictest2770638-21latency_hist10:35:011
2564819993426,6cyclictest2855870-21/usr/sbin/munin12:03:011
2564819993426,6cyclictest2831850-21sed11:37:571
2564815993427,5cyclictest2860450-21chrt12:05:000
2564815993424,8cyclictest2841026-21/usr/sbin/munin11:48:080
2564820993328,4cyclictest2621679-21kworker/u8:2+events_unbound08:52:562
2564820993322,9cyclictest2805078-21ntpq11:08:082
2564815993328,3cyclictest2632941-21irqrtprio08:17:570
2564815993326,5cyclictest2780804-21latency_hist10:45:010
256052323324,3sleep00-21swapper/007:08:020
2564819993228,3cyclictest2598012-21irqcore07:42:581
2564819993228,3cyclictest2569878-21systemctl07:15:011
2564819993227,3cyclictest2757045-21irqrtprio10:22:581
2564815993227,4cyclictest2701353-21kworker/u8:3+events_unbound10:03:080
2564815993227,3cyclictest2750904-21systemd-run10:15:010
2564820993126,4cyclictest2740937-21kworker/u8:0+flush-8:010:33:062
2564820993125,4cyclictest2800912-21base6411:05:002
2564819993128,2cyclictest850-21mta-sts-daemon07:15:031
2564819993127,3cyclictest1-21systemd07:30:001
2564819993126,3cyclictest2730247-21needreboot09:53:011
2564819993126,3cyclictest2662954-21irqrtprio08:47:571
2564815993127,3cyclictest2516580-21kworker/u8:1+flush-8:007:28:120
2564815993126,3cyclictest2745897-21systemd-run10:10:000
2564815993125,5cyclictest1767997-21kworker/u8:4+events_unbound07:15:020
2564815993125,4cyclictest2865383-21kworker/u8:2+flush-8:012:12:540
2564815993119,8cyclictest275-21systemd-journal10:51:370
2564820993026,3cyclictest2850683-21kworker/u8:3+events_unbound12:08:042
2564820993026,3cyclictest2850683-21kworker/u8:3+events_unbound12:08:042
2564820993026,3cyclictest2671619-21kworker/u8:1+events_unbound09:15:082
2564820993026,2cyclictest2676597-21sendmail09:00:012
2564820993021,7cyclictest2855441-21awk12:00:002
2564815993025,3cyclictest2825509-21cat11:30:000
2564815993022,6cyclictest2671619-21kworker/u8:1+flush-8:009:08:030
2564815993022,5cyclictest2607761-21grep07:52:550
25601192303,6sleep10-21swapper/107:06:191
2564820992923,4cyclictest2621679-21kworker/u8:2+flush-8:008:05:102
2564819992924,3cyclictest2809875-21needreboot11:13:021
2564819992921,6cyclictest2751323-21/usr/sbin/munin10:18:021
2564819992921,6cyclictest2746385-21apt-get10:12:491
2564819992919,8cyclictest2794859-21ntpq10:58:021
2564815992924,3cyclictest275-21systemd-journal11:25:000
2564815992920,6cyclictest275-21systemd-journal08:47:560
2564815992919,8cyclictest2695654-21ntpq09:18:040
2564819992824,2cyclictest2677772-21irqrtprio09:02:571
2564819992824,2cyclictest2677772-21irqrtprio09:02:571
2564819992823,4cyclictest2785558-21unixbench_singl10:48:101
2564819992822,4cyclictest2622298-21apt-get08:07:511
2564815992818,8cyclictest2891054-21diskstats12:37:540
2564820992724,2cyclictest2681324-21unixbench_singl09:03:102
2564820992724,2cyclictest2681324-21unixbench_singl09:03:102
2564819992724,2cyclictest2851507-21irqcore11:57:561
2564819992723,3cyclictest2840606-21kworker/u8:1+flush-8:011:50:081
2564819992723,3cyclictest2725913-21unixbench_singl09:48:101
2564819992722,3cyclictest2895274-21idleruntime-cro12:40:001
2564819992721,4cyclictest2801255-21apt-get11:07:511
2564819992720,4cyclictest2616897-21latency_hist08:00:001
2564819992719,6cyclictest275-21systemd-journal11:23:181
2564815992723,2cyclictest2875460-21idleruntime-cro12:20:000
2564815992721,4cyclictest2770494-21kworker/u8:2+flush-8:010:38:100
2564815992721,4cyclictest2735953-21cron10:00:000
2564815992721,3cyclictest2770494-21kworker/u8:2+events_unbound10:47:540
2564815992721,3cyclictest0-21swapper/011:55:000
2564815992721,3cyclictest0-21swapper/011:40:000
2564815992718,6cyclictest2770494-21kworker/u8:2+flush-8:011:13:090
2564815992718,5cyclictest0-21swapper/009:47:500
256482099267,2cyclictest27531931kthreadcore10:17:592
2564820992623,2cyclictest2702112-21fschecks_time09:27:532
2564819992622,2cyclictest0-21swapper/110:40:001
2564819992621,4cyclictest2691420-21turbostat.cron09:15:001
2564819992621,4cyclictest1767997-21kworker/u8:4+flush-8:007:36:371
2564819992620,4cyclictest2825306-21unixbench_singl11:28:091
256481599263,15cyclictest571-21snmpd08:57:500
2564815992622,2cyclictest2727275-21irqrtprio09:52:560
2564815992621,3cyclictest2711276-21turbostat.cron09:35:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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