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2026-05-24 - 17:52

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 Sun May 24, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3603382995339,10cyclictest231ktimers/107:40:141
3603382995339,10cyclictest231ktimers/107:40:141
3603378994832,12cyclictest121ktimers/008:25:150
3603387994637,7cyclictest311ktimers/207:55:132
3603387994516,24cyclictest0-21swapper/212:30:002
3603382994538,4cyclictest3605187-21munin-node07:15:021
3603387994436,4cyclictest3693443-21munin-plugin-st11:29:592
3603387994433,8cyclictest311ktimers/207:15:102
360338799441,11cyclictest3673450-21/usr/sbin/munin10:30:202
3603382994438,4cyclictest3694993-21kworker/u8:0+events_unbound11:35:281
3603391994331,8cyclictest3604545-21unixbench_multi07:10:243
3603391994331,7cyclictest3689602-21grep11:15:263
360338799432,10cyclictest3626109-21users08:10:262
3603387994315,24cyclictest3605174-21apt-config07:15:022
3603391994231,7cyclictest3713501-21unixbench_singl12:25:273
3603391994229,9cyclictest3641863-21sendmail09:00:013
3603391994229,10cyclictest391ktimers/310:35:133
3603391994229,10cyclictest391ktimers/310:35:123
360338799421,10cyclictest3682086-21/usr/sbin/munin10:55:212
3603382994230,8cyclictest3693425-21cron11:30:001
3603387994127,10cyclictest311ktimers/210:20:122
3603387994114,22cyclictest3711789-21grep12:20:242
3603387994112,25cyclictest0-21swapper/212:35:242
360338799411,10cyclictest3645823-21/usr/sbin/munin09:10:142
3603382994132,5cyclictest3655724-21sendmail09:40:001
3603378994134,4cyclictest3707078-21audit_send_reply12:09:590
360338799405,9cyclictest3628733-21if_err_eth108:20:172
3603387994033,4cyclictest3635025-21cat08:40:002
3603387994033,4cyclictest3635025-21cat08:39:592
360338799403,10cyclictest3666157-21sshd10:10:072
360338799402,9cyclictest3616295-21/usr/sbin/munin07:45:172
360338799402,9cyclictest3616295-21/usr/sbin/munin07:45:162
360338799399,27cyclictest0-21swapper/210:00:012
360338799398,6cyclictest3630887-21cat08:25:252
3603387993932,4cyclictest3696416-21unixbench_singl11:35:242
360338799392,6cyclictest3664227-21cron10:05:012
360338799391,9cyclictest3687884-21head11:10:262
360338799391,9cyclictest3659475-21/usr/sbin/munin09:50:142
3603387993913,23cyclictest0-21swapper/211:45:262
3603387993911,5cyclictest3641885-21http09:00:002
360338799391,11cyclictest3684195-21cut11:00:252
360338799391,11cyclictest3644580-21ntp_states09:05:222
360338799391,11cyclictest3643790-21idleruntime-cro09:05:002
360338799391,11cyclictest3632424-21ntp_states08:30:192
360338799391,11cyclictest3613327-21meminfo07:35:192
3603382993933,4cyclictest3682994-21sendmail11:00:011
3603382993929,5cyclictest0-21swapper/110:45:161
3603391993827,8cyclictest3608798-21grep07:20:253
360338799383,10cyclictest36094762sleep207:25:122
360338799382,9cyclictest3637072-21cstates08:45:142
360338799382,7cyclictest3639726-21head08:50:262
360338799382,12cyclictest3650154-21grep09:20:262
360338799381,11cyclictest3671759-21wc10:25:202
360338799381,10cyclictest3704115-21cut12:00:152
3603382993822,5cyclictest131rcu_preempt09:15:151
3603391993728,5cyclictest3655706-21munin-plugin-st09:40:003
360338799379,2cyclictest0-21swapper/210:35:252
360338799379,2cyclictest0-21swapper/210:35:242
3603387993711,4cyclictest311ktimers/211:59:032
360338799371,11cyclictest3680045-21fschecks_time10:50:162
360338799371,10cyclictest438-21cron12:10:002
360338799371,10cyclictest3708789-21runrttasks12:15:002
360338799371,10cyclictest3635623-21uname08:40:182
360338799371,10cyclictest3618425-21cut07:50:182
3603382993726,8cyclictest438-21cron12:40:001
3603378993727,6cyclictest3707489-21grep12:10:140
3603391993626,6cyclictest0-21swapper/308:40:003
3603391993626,6cyclictest0-21swapper/308:40:003
360338799369,2cyclictest0-21swapper/211:50:202
360338799367,8cyclictest3667991-21diskstats10:15:132
360338799366,6cyclictest3654939-21run-parts09:35:232
360338799362,8cyclictest204-21dbus-daemon10:45:152
360338799362,7cyclictest3648472-21head09:15:262
3603387993611,3cyclictest0-21swapper/210:05:182
360338799361,11cyclictest3676530-21df_inode10:40:152
3603387993610,5cyclictest3656859-21cat09:40:242
360338299362,13cyclictest37006422grep11:50:161
3603378993626,7cyclictest3605131-21latency_hist07:15:010
3603378993624,7cyclictest0-21swapper/012:20:250
360338799358,5cyclictest3608651-21timerandwakeup07:20:242
360338799353,9cyclictest3714788-21meminfo12:30:182
360338799351,8cyclictest3614758-21fschecks_count07:40:162
360338799351,8cyclictest3614758-21fschecks_count07:40:152
360338799351,7cyclictest3691309-21unixbench_singl11:20:252
360338799351,7cyclictest3691309-21unixbench_singl11:20:242
360338799351,7cyclictest3624337-21tail08:05:242
3603387993511,3cyclictest0-21swapper/211:05:252
360338799351,12cyclictest3654135-21sed09:35:012
3603382993526,4cyclictest0-21swapper/111:50:011
3603382993524,7cyclictest3703201-21grep11:55:261
3603378993526,6cyclictest0-21swapper/008:05:010
3603378993526,4cyclictest0-21swapper/011:40:280
3603378993525,6cyclictest0-21swapper/007:50:000
3603378993525,6cyclictest0-21swapper/007:50:000
3603391993427,4cyclictest3682976-21sh11:00:003
3603391993427,4cyclictest3646744-21head09:10:253
3603391993426,4cyclictest0-21swapper/309:50:003
3603391993425,5cyclictest3700256-21idleruntime-cro11:50:003
3603391993424,6cyclictest3673995-21grep10:30:243
360338799349,3cyclictest3690010-21sh11:20:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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