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2026-05-21 - 12:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Thu May 21, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2672287995749,5cyclictest438-21cron00:20:013
2672276995243,5cyclictest2740156-21taskset22:25:010
2672283995116,10cyclictest2700715-21fschecks_count20:30:152
2672280995041,5cyclictest2722308-21unixbench_singl21:30:311
2672287994833,11cyclictest391ktimers/300:20:113
2672283994613,15cyclictest2740801-21expr22:25:192
2672276994627,6cyclictest2696617-21kworker/u8:0+events_unbound20:28:420
2672283994536,5cyclictest2697494-21kernelversion20:20:192
2672283994513,15cyclictest2693315-21cat20:10:012
2672283994511,11cyclictest2727900-21ls21:50:012
2672287994432,8cyclictest2703734-21sendmail20:40:013
2672283994412,14cyclictest2677286-21cat19:20:252
2672280994428,12cyclictest231ktimers/121:50:111
2672280994428,12cyclictest231ktimers/121:50:111
2672283994332,7cyclictest204-21dbus-daemon20:00:172
2672280994334,5cyclictest2707126-21cron20:50:011
2672276994235,4cyclictest2683032-21cron19:40:010
2672276994232,6cyclictest121ktimers/022:55:120
2672287994134,4cyclictest2769385-21munin-plugin-st23:50:003
2672280994135,4cyclictest2668424-21kworker/u8:3+events_unbound20:00:171
2672276994129,8cyclictest2705028-21grep20:40:310
2672287994033,4cyclictest2784924-21cron00:35:003
2672283994014,10cyclictest27822102meminfo00:25:182
2672283994010,14cyclictest2723333-21latency21:35:222
2672287993931,4cyclictest0-21swapper/320:55:153
2672283993910,10cyclictest2747807-21ntp_states22:45:212
2672283993910,10cyclictest2704418-21meminfo20:40:242
267228799380,4cyclictest131rcu_preempt21:40:133
2672283993829,5cyclictest2738262-21sendmail22:20:012
2672283993812,9cyclictest2712366-21cut21:05:012
2672280993828,6cyclictest0-21swapper/123:50:261
2672276993832,4cyclictest2720635-21kworker/u8:3+events_unbound21:40:440
267227699380,9cyclictest11-21ksoftirqd/020:05:150
2672287993728,6cyclictest2781906-21fschecks_count00:25:143
2672287993726,8cyclictest2734852-21auditctl22:10:003
267228399379,10cyclictest2710030-21cat20:55:252
2672283993720,11cyclictest2759391-21apt-get23:20:112
2672283993720,11cyclictest0-21swapper/221:50:112
2672283993720,11cyclictest0-21swapper/221:50:112
2672283993717,12cyclictest0-21swapper/200:00:112
2672276993721,6cyclictest2710907-21kworker/u8:0+events_unbound00:39:130
267227699371,9cyclictest11-21ksoftirqd/000:05:120
267227699371,9cyclictest11-21ksoftirqd/000:05:120
2672283993624,9cyclictest2733495-21/usr/sbin/munin22:05:132
2672283993622,11cyclictest2765010-21/usr/sbin/munin23:35:202
2672283993618,13cyclictest2695549-21/usr/sbin/munin20:15:152
2672283993615,5cyclictest2754716-21memory23:05:192
2672280993628,4cyclictest0-21swapper/119:20:011
2672280993628,4cyclictest0-21swapper/119:20:001
2672280993626,6cyclictest0-21swapper/122:40:251
2672280993625,7cyclictest0-21swapper/120:25:251
2672280993625,7cyclictest0-21swapper/100:20:241
2672276993625,7cyclictest2767259-21grep23:40:240
2672276993619,6cyclictest2782316-21kworker/u8:3+events_unbound00:29:210
267227699361,8cyclictest11-21ksoftirqd/000:10:100
267227699361,8cyclictest11-21ksoftirqd/000:10:100
2672276993610,5cyclictest131rcu_preempt23:25:110
2672287993527,4cyclictest0-21swapper/322:55:563
2672287993527,4cyclictest0-21swapper/320:25:003
2672283993528,4cyclictest2769611-21apt-get23:50:122
2672283993523,9cyclictest2780062-21apt-get00:20:112
2672283993522,9cyclictest0-21swapper/221:05:152
2672283993522,10cyclictest2702587-21/usr/sbin/munin20:35:172
2672283993521,11cyclictest2694067-21/usr/sbin/munin20:10:182
2672283993521,11cyclictest2694067-21/usr/sbin/munin20:10:182
2672283993521,10cyclictest2776951-21/usr/sbin/munin00:10:182
2672283993521,10cyclictest2776951-21/usr/sbin/munin00:10:182
2672283993510,10cyclictest645-21runrttasks20:53:592
2672280993525,7cyclictest2724397-21sh21:40:011
2672280993525,6cyclictest0-21swapper/119:30:241
2672287993428,3cyclictest0-21swapper/322:25:003
2672287993426,3cyclictest0-21swapper/319:45:133
2672283993423,8cyclictest2783465-21apt-get00:30:122
2672283993423,7cyclictest2750050-21sshd22:50:552
2672283993423,7cyclictest2735082-21munin-node22:10:102
2672283993422,9cyclictest2714887-21/usr/sbin/munin21:10:222
2672283993422,9cyclictest2714887-21/usr/sbin/munin21:10:212
2672283993422,7cyclictest0-21swapper/221:20:262
2672283993422,6cyclictest311ktimers/219:35:132
2672283993421,8cyclictest2742636-21/usr/sbin/munin22:30:192
2672283993421,10cyclictest2750771-21/usr/sbin/munin22:55:142
2672283993413,6cyclictest2758009-21irqstats23:15:202
2672283993412,8cyclictest2739074-21ntpq22:20:212
2672280993426,4cyclictest2696475-21seq20:15:251
2672280993424,6cyclictest0-21swapper/122:00:241
2672280993423,7cyclictest0-21swapper/120:40:011
2672280993420,5cyclictest2682735-21kworker/u8:0+events_unbound20:05:181
2672276993429,3cyclictest0-21swapper/021:05:120
2672276993428,4cyclictest2710907-21kworker/u8:0+events_unbound00:33:370
2672276993426,5cyclictest2717597-21sendmail21:20:000
2672276993426,5cyclictest2717597-21sendmail21:20:000
2672287993325,4cyclictest0-21swapper/320:30:223
2672283993324,7cyclictest2687818-21cron19:51:012
2672283993324,5cyclictest0-21swapper/223:30:242
2672283993322,7cyclictest2746828-21cron22:43:002
2672283993322,7cyclictest2724648-21sshd21:40:102
2672283993321,9cyclictest2778685-21/usr/sbin/munin00:15:172
2672283993321,8cyclictest2683349-21/usr/sbin/munin19:40:142
2672283993320,10cyclictest2730486-21/usr/sbin/munin21:55:202
2672283993320,10cyclictest2730486-21/usr/sbin/munin21:55:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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