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2026-05-20 - 20:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Wed May 20, 2026 12:43:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2584101995141,7cyclictest421-21dbus-daemon09:55:011
258410299508,9cyclictest171rcu_preempt08:45:542
2584101994938,8cyclictest1744621-21cups-browsed09:14:441
2584100994741,4cyclictest151ktimers/011:40:560
2584101994537,5cyclictest2745844-21rm11:51:061
2584100994538,4cyclictest1055-21mta-sts-daemon10:30:590
2584100994537,5cyclictest261-21systemd-journal09:55:010
2584100994532,10cyclictest2614094-21systemd-run08:50:010
2584101994436,5cyclictest2781349-21ssh12:36:061
2584100994438,3cyclictest2621003-21fschecks_count09:10:480
2584102994335,5cyclictest2639863-21grep09:35:002
2584101994335,5cyclictest2658507-21awk10:00:011
2584101994335,5cyclictest2588622-21systemd-run07:25:011
2584100994338,3cyclictest0-21swapper/010:10:580
2584100994338,3cyclictest0-21swapper/010:10:580
2584100994329,11cyclictest2753524-21systemctl12:01:040
2584102994230,6cyclictest2712947-21aten_r2power_vo11:10:462
2584102994133,5cyclictest2620081-21diskmemload11:40:512
2584102994132,5cyclictest2688415-21latency_hist10:40:022
2584101994133,5cyclictest2647637-21cat09:45:021
2584101994133,5cyclictest2636537-21sh09:30:451
2584101994133,5cyclictest2633413-21sh09:25:541
2584101994133,5cyclictest2633413-21sh09:25:541
2584100994129,9cyclictest0-21swapper/012:06:080
2584100994127,11cyclictest1051-21mta-sts-daemon11:45:470
2584101994035,2cyclictest0-21swapper/111:50:001
2584101994033,4cyclictest2617102-21sh09:00:011
2584101994032,5cyclictest421-21dbus-daemon11:30:011
2584101994032,5cyclictest421-21dbus-daemon11:30:011
2584101994030,7cyclictest2717269-21latency11:15:541
2584100994025,12cyclictest2610952-21unixbench_multi08:36:040
2584100994025,12cyclictest0-21swapper/010:05:560
2584100994025,12cyclictest0-21swapper/010:05:560
2584102993932,4cyclictest2632111-21idleruntime-cro09:25:012
2584102993932,4cyclictest2628121-21sendmail09:20:012
2584101993931,5cyclictest2773733-21unixbench_multi12:26:091
2584101993931,5cyclictest2670477-21ntp_kernel_pll_10:15:591
2584100993933,4cyclictest2698246-21unixbench_singl10:51:070
2584100993932,4cyclictest0-21swapper/009:45:560
2584100993931,5cyclictest420-21avahi-daemon11:11:070
2584100993931,5cyclictest12350irq/32-eth010:41:000
258410099391,15cyclictest14-21ksoftirqd/007:30:590
2584100993830,5cyclictest421-21dbus-daemon09:59:310
2584100993827,8cyclictest2647621-21sh09:45:010
2584100993823,8cyclictest151ktimers/011:20:570
2584102993730,5cyclictest341rcuc/210:00:552
2584102993730,4cyclictest2618580-21cron09:05:012
2584102993730,3cyclictest0-21swapper/212:36:002
2584102993729,5cyclictest2656047-21needreboot09:55:522
2584102993728,5cyclictest2599340-21aten_r2power_cu08:00:442
2584101993732,2cyclictest0-21swapper/112:00:011
2584101993729,5cyclictest2756034-21latency_hist12:05:021
2584101993729,5cyclictest2662891-21grep10:05:471
2584101993729,5cyclictest2662891-21grep10:05:471
2584101993729,5cyclictest2620201-21latency_hist09:10:021
2584101993729,5cyclictest2593084-21munin-run07:40:011
2584100993730,5cyclictest261-21systemd-journal11:10:010
2584100993729,5cyclictest420-21avahi-daemon11:28:100
2584100993729,5cyclictest420-21avahi-daemon11:28:100
2584100993714,13cyclictest171rcu_preempt09:15:560
2584102993630,3cyclictest0-21swapper/210:10:552
2584102993630,3cyclictest0-21swapper/210:10:552
2584102993629,3cyclictest0-21swapper/211:21:032
2584102993629,3cyclictest0-21swapper/207:40:012
2584102993628,5cyclictest2615645-21latency_hist08:55:022
2584102993628,4cyclictest0-21swapper/211:01:052
2584102993628,3cyclictest0-21swapper/211:35:592
2584102993627,4cyclictest0-21swapper/212:25:012
2584102993624,9cyclictest2677675-21missed_timers10:25:512
2584102993622,9cyclictest600-21gmain08:05:592
2584101993630,3cyclictest2600614-21kworker/u8:8-xprtiod09:40:001
2584101993630,3cyclictest0-21swapper/107:20:001
2584101993630,3cyclictest0-21swapper/107:20:001
2584101993628,5cyclictest2729894-21unixbench-2d11:31:071
2584101993628,5cyclictest2729894-21unixbench-2d11:31:071
2584101993628,5cyclictest2659859-21ssh10:00:581
2584101993627,6cyclictest261-21systemd-journal11:15:011
2584101993627,5cyclictest695-21cron11:01:001
2584100993631,3cyclictest2603595-21kworker/u8:2-xprtiod09:00:010
2584100993630,4cyclictest2696264-21idleruntime-cro10:50:010
2584100993630,4cyclictest1054-21mta-sts-daemon10:00:480
2584100993629,5cyclictest2636003-21rm09:30:010
2584100993629,5cyclictest2636003-21rm09:30:010
2584100993629,4cyclictest2671455-21kworker/u8:10-xprtiod10:20:440
2584100993629,4cyclictest2639863-21grep09:35:000
2584100993628,5cyclictest1744621-21cups-browsed11:52:230
2584100993625,6cyclictest151ktimers/009:35:560
2584102993529,3cyclictest0-21swapper/208:00:012
2584102993527,5cyclictest2692322-21munin-plugin-st10:45:012
2584102993527,5cyclictest2597586-21munin-plugin-st07:55:012
2584102993526,6cyclictest2612590-21grep08:45:012
2584102993520,12cyclictest2641888-21sh09:36:112
2584101993529,3cyclictest0-21swapper/111:40:581
2584101993527,5cyclictest2680418-21ssh10:30:011
2584101993527,5cyclictest2629029-21fschecks_count09:20:471
2584101993516,11cyclictest600-21gmain09:16:591
2584100993529,4cyclictest2733806-21timerwakeupswit11:36:070
2584100993528,4cyclictest2783647-21sendmail12:40:000
2584100993525,7cyclictest0-21swapper/011:20:020
2584100993522,5cyclictest2600614-21kworker/u8:8+xprtiod08:20:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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