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2026-07-07 - 15:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot4s.osadl.org (updated Tue Jul 07, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
496660994741,4cyclictest834692-21latency_hist12:35:000
496660994336,5cyclictest798646-21latency_hist12:00:010
496670993936,2cyclictest463505-21kworker/u8:3+flush-259:008:00:003
496660993832,4cyclictest496864-21/usr/sbin/munin07:10:150
496665993630,5cyclictest773097-21/usr/sbin/munin11:35:122
496662993630,4cyclictest668685-21latency_hist09:55:011
496660993531,3cyclictest463462-21kworker/u8:2+flush-259:007:50:200
496660993530,3cyclictest804044-21apt-get12:05:110
496660993529,4cyclictest335557-21systemd-journal08:01:150
496662993431,2cyclictest335557-21systemd-journal08:14:151
496662993429,3cyclictest565194-21cat08:15:011
496660993429,3cyclictest463462-21kworker/u8:2+flush-259:009:55:220
496665993328,3cyclictest591255-21base6408:40:012
496665993127,3cyclictest463462-21kworker/u8:2+flush-259:007:20:152
496662993024,4cyclictest715031-21ntpq10:35:221
496670992824,3cyclictest463462-21kworker/u8:2+flush-259:010:20:223
496662992825,2cyclictest490-21dbus-daemon10:55:001
496665992721,4cyclictest679190-21gpgv10:05:002
496662992723,3cyclictest335557-21systemd-journal09:16:171
496662992722,4cyclictest548291-21ntpq07:55:201
496660992720,5cyclictest694482-21ntpq10:15:220
496670992623,2cyclictest533855-21kworker/u8:0+flush-259:008:45:183
496660992621,4cyclictest721075-21kworker/u8:1+flush-259:011:20:170
496670992522,2cyclictest616895-21kworker/u8:0+events_unbound09:40:183
496665992520,3cyclictest678676-21kworker/u8:1+events_unbound10:10:002
496660992521,3cyclictest335557-21systemd-journal08:24:260
496670992420,3cyclictest507-21in:imuxsock08:40:003
496670992420,3cyclictest463462-21kworker/u8:2+events_unbound09:20:183
496670992419,4cyclictest585776-21latency_hist08:35:003
496662992421,2cyclictest487026-21kworker/u8:1+events_unbound07:40:171
496670992319,3cyclictest783084-21kworker/u8:3+flush-259:012:40:003
496670992317,4cyclictest653207-21latency_hist09:40:013
496662992320,2cyclictest463462-21kworker/u8:2+flush-259:007:50:211
496662992319,3cyclictest793690-21kworker/u8:4+flush-259:011:55:241
496660992318,3cyclictest533619-21latency_hist07:45:000
496662992219,2cyclictest788258-21cron11:50:011
496662992218,3cyclictest700675-21/usr/sbin/munin10:25:151
496660992218,3cyclictest463462-21kworker/u8:2+flush-259:011:00:000
496665992118,2cyclictest721075-21kworker/u8:1+flush-259:011:10:222
496665992117,3cyclictest501856-21kworker/u8:0+flush-259:007:20:012
496662992118,2cyclictest745795-21kworker/u8:0+flush-259:011:14:531
496662992118,2cyclictest596556-21idleruntime-cro08:44:591
496660992117,3cyclictest463462-21kworker/u8:2+flush-259:007:45:180
496670992011,7cyclictest463462-21kworker/u8:2+flush-259:010:49:483
496670992011,7cyclictest463462-21kworker/u8:2+flush-259:010:49:483
496665992016,3cyclictest819221-21kworker/u8:1+flush-259:012:30:262
496665992014,4cyclictest335557-21systemd-journal07:36:112
496662992015,3cyclictest648302-21apt-get09:35:111
496662992014,4cyclictest335557-21systemd-journal07:25:011
496662991915,3cyclictest700667-21kworker/u8:3+flush-259:010:40:221
496662991914,4cyclictest746645-21latency_hist11:10:011
496660991916,1cyclictest0-21swapper/009:05:000
496660991913,4cyclictest554592-21/usr/sbin/munin08:05:160
496670991814,3cyclictest533855-21kworker/u8:0+flush-259:008:00:163
496670991814,3cyclictest463462-21kworker/u8:2+flush-259:010:00:263
496670991813,4cyclictest679588-21cat10:05:003
496665991814,3cyclictest463505-21kworker/u8:3+flush-259:008:45:262
496665991814,3cyclictest463505-21kworker/u8:3+flush-259:008:29:592
496665991812,4cyclictest824377-21latency_hist12:25:012
49666299181,15cyclictest335557-21systemd-journal11:33:181
496660991815,2cyclictest783084-21kworker/u8:3+flush-259:012:35:190
496660991812,4cyclictest606824-21latency_hist08:55:000
496670991715,1cyclictest596543-21sh08:45:003
496670991715,1cyclictest509111-21kthreadcore07:20:163
496670991714,2cyclictest500-21systemd-logind11:55:013
496670991713,3cyclictest721075-21kworker/u8:1+flush-259:011:30:273
496670991713,3cyclictest502491-21apt-get07:15:133
496665991715,1cyclictest0-21swapper/209:40:012
496665991714,2cyclictest533855-21kworker/u8:0+flush-259:008:05:182
496665991713,3cyclictest721075-21kworker/u8:1+flush-259:011:40:102
496665991713,3cyclictest549406-21kworker/u8:1+flush-259:008:10:162
496665991712,4cyclictest335557-21systemd-journal10:15:002
496662991713,3cyclictest745795-21kworker/u8:0+flush-259:011:15:231
496662991713,3cyclictest679014-21gpgv10:05:001
496662991713,3cyclictest601347-21kworker/u8:1+events_unbound08:50:221
496662991712,3cyclictest335557-21systemd-journal11:30:001
496662991711,4cyclictest575434-21latency_hist08:25:011
496660991714,2cyclictest814782-21irqcore12:15:180
496660991713,3cyclictest590962-21gpgv08:39:590
496660991712,3cyclictest335557-21systemd-journal11:54:170
496660991711,5cyclictest335557-21systemd-journal12:13:180
496670991613,2cyclictest721048-21idleruntime-cro10:45:003
496670991613,2cyclictest711443-21irqcore10:35:173
496670991613,2cyclictest694840-21unixbench_multi10:15:253
496670991612,3cyclictest601347-21kworker/u8:1+events_unbound08:55:193
496670991612,3cyclictest463505-21kworker/u8:3+flush-259:007:14:153
496670991611,3cyclictest606805-21cron08:55:003
49666599164,5cyclictest575441-21munin-run08:25:002
496665991613,2cyclictest463462-21kworker/u8:2+flush-259:009:25:192
496665991610,4cyclictest591452-21cat08:40:002
496662991613,2cyclictest783149-21sh11:45:001
496662991613,2cyclictest695586-21apt-get10:20:121
496662991613,2cyclictest601347-21kworker/u8:1+flush-259:009:10:211
496662991612,3cyclictest690204-21kworker/u8:0+flush-259:010:19:471
496662991612,3cyclictest509-21rs:main1
496662991611,4cyclictest662616-21ntpq09:45:211
496660991614,1cyclictest60350irq/132-enp0s29f1:rx-008:26:370
496660991613,2cyclictest752507-21irqcore11:15:170
496660991613,2cyclictest684796-21latency_hist10:10:000
496660991613,2cyclictest60350irq/132-enp0s29f1:rx-011:26:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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