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2026-06-24 - 02:05

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 Tue Jun 23, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3848986995344,5cyclictest3869999-21idleruntime-cro08:10:010
3848999995243,5cyclictest3902622-21munin-plugin-st09:45:013
384899099520,41cyclictest0-21swapper/110:30:121
3848990994935,9cyclictest3859773-21sendmail07:40:011
384899099491,43cyclictest3905535-21grep09:50:261
3848990994911,22cyclictest3906541-21cstates09:55:131
3848986994837,6cyclictest0-21swapper/009:35:010
3848990994736,8cyclictest3884049-21fschecks_time08:50:151
3848986994713,5cyclictest131rcu_preempt10:00:120
3848986994713,5cyclictest131rcu_preempt10:00:120
384899099461,39cyclictest3953334-21apt-get12:10:121
384899099461,26cyclictest3875117-21latency_hist08:25:011
3848986994620,17cyclictest2727008-21kworker/u8:2+events_unbound07:45:180
3848986994533,7cyclictest3923434-21grep10:40:230
3848995994433,8cyclictest311ktimers/207:35:112
384899099442,35cyclictest3894322-21apt-get09:20:121
384899099441,40cyclictest3961281-21cron12:31:001
384899099441,38cyclictest3853439-21/usr/sbin/munin07:20:171
384899099440,40cyclictest0-21swapper/109:45:131
3848986994437,4cyclictest3864861-21cron07:55:010
3848986994419,12cyclictest3940885-21kworker/u8:0+events_unbound12:33:270
384899999435,5cyclictest131rcu_preempt12:15:113
3848995994336,4cyclictest3864861-21cron07:55:012
3848990994334,5cyclictest0-21swapper/109:40:011
384899099433,37cyclictest3939285-21cron11:28:011
3848990994331,9cyclictest231ktimers/108:30:121
3848990994331,9cyclictest231ktimers/108:30:121
384899099431,39cyclictest3925843-21apt-get10:50:131
384899099431,39cyclictest3867266-21/usr/sbin/munin08:00:191
384899099431,36cyclictest3936083-21apt-get11:20:101
3848990994231,8cyclictest3862701-21grep07:45:251
384899099422,34cyclictest3948213-21apt-get11:55:101
384899099421,37cyclictest3945267-21/usr/sbin/munin11:45:201
384899099421,36cyclictest3865438-21/usr/sbin/munin07:55:181
384899099421,35cyclictest3934362-21apt-get11:15:111
384899099421,35cyclictest3927543-21apt-get10:55:121
3848995994134,4cyclictest0-21swapper/209:40:012
3848995994132,6cyclictest3962908-21unixbench_singl12:35:252
384899099413,35cyclictest3931360-21/usr/sbin/munin11:05:161
3848990994124,13cyclictest3963331-21sendmail12:40:001
384899099412,34cyclictest3956874-21df_inode12:20:171
384899099411,37cyclictest53-21kcompactd008:46:041
384899099411,36cyclictest3920720-21munin-node10:35:111
384899099411,35cyclictest3924144-21munin-node10:45:121
384899099411,35cyclictest3912223-21/usr/sbin/munin10:10:191
384899099411,35cyclictest3860577-21/usr/sbin/munin07:40:221
384899099410,35cyclictest0-21swapper/108:40:121
3848986994129,9cyclictest121ktimers/011:40:120
3848986994119,7cyclictest3932048-21kworker/u8:2+events_unbound11:24:280
3848995994033,5cyclictest3904290-21kworker/u8:1+events_unbound10:09:352
3848995994033,5cyclictest3904290-21kworker/u8:1+events_unbound10:09:352
384899099402,35cyclictest3942604-21cron11:37:001
384899099401,36cyclictest3949939-21/usr/sbin/munin12:00:131
384899099401,36cyclictest3897983-21/usr/sbin/munin09:30:161
384899099401,36cyclictest3896697-21/usr/sbin/munin09:25:241
384899099401,35cyclictest3946953-21/usr/sbin/munin11:50:181
384899099401,34cyclictest3955310-21/usr/sbin/munin12:15:151
384899099401,34cyclictest3951758-21diskstats12:05:171
384899099401,34cyclictest3939743-21/usr/sbin/munin11:30:121
384899099401,34cyclictest3854997-21diskstats07:25:151
384899099401,33cyclictest3910198-21/usr/sbin/munin10:05:141
384899099401,33cyclictest3910198-21/usr/sbin/munin10:05:141
384899999394,4cyclictest131rcu_preempt11:15:113
384899099393,32cyclictest3891020-21diskstats09:10:151
384899099393,32cyclictest3891020-21diskstats09:10:151
3848990993927,8cyclictest0-21swapper/108:05:251
384899099391,35cyclictest3913612-21/usr/sbin/munin10:15:171
384899099391,35cyclictest3908503-21diskstats10:00:151
384899099391,35cyclictest3908503-21diskstats10:00:151
384899099391,35cyclictest3890566-21cron09:09:001
384899099391,35cyclictest3890566-21cron09:09:001
384899099390,34cyclictest3943116-21apt-get11:40:111
3848986993919,6cyclictest3843757-21kworker/u8:1+events_unbound07:18:160
3848999993827,7cyclictest0-21swapper/308:00:263
3848995993827,6cyclictest0-21swapper/210:05:002
3848995993827,6cyclictest0-21swapper/210:05:002
384899099382,34cyclictest3850436-21cron07:13:011
384899099382,33cyclictest3872258-21irqstats08:15:181
3848990993814,20cyclictest0-21swapper/108:55:241
384899099381,35cyclictest53-21kcompactd010:23:511
384899099381,34cyclictest3875590-21/usr/sbin/munin08:25:181
384899099381,34cyclictest3863517-21/usr/sbin/munin07:50:151
384899099381,34cyclictest3856883-21/usr/sbin/munin07:30:171
384899099381,31cyclictest3870222-21apt-get08:10:131
384899099380,33cyclictest3887280-21apt-get09:00:101
384899099380,30cyclictest0-21swapper/108:35:131
3848986993831,4cyclictest3935856-21sendmail11:20:010
3848986993821,6cyclictest3928679-21kworker/u8:3+events_unbound11:56:270
3848999993725,9cyclictest391ktimers/308:20:133
3848995993729,5cyclictest0-21swapper/208:45:002
3848995993726,7cyclictest0-21swapper/211:00:002
3848990993726,6cyclictest0-21swapper/109:45:001
384899099371,33cyclictest3959368-21/usr/sbin/munin12:25:251
384899099371,33cyclictest3959368-21/usr/sbin/munin12:25:251
384899099371,33cyclictest3932970-21if_eth111:10:181
3848995993626,6cyclictest0-21swapper/211:05:232
3848995993626,6cyclictest0-21swapper/209:00:012
3848995993625,7cyclictest3855863-21grep07:25:252
384899099361,32cyclictest3922558-21diskstats10:40:121
384899099361,32cyclictest3851279-21munin-node07:15:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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