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2026-09-08 - 01:57

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 Mon Sep 07, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
695495996020,17cyclictest802154-21tail12:15:242
695495995320,11cyclictest781042-21/usr/sbin/munin11:15:172
695495995039,7cyclictest783887-21sh11:25:002
695495995035,11cyclictest311ktimers/210:25:122
695495994817,12cyclictest785606-21awk11:30:002
695500994538,4cyclictest713135-21latency_hist08:00:013
695495994429,10cyclictest798077-21/usr/sbin/munin12:05:172
695495994418,9cyclictest697368-21ls07:15:022
695495994233,6cyclictest716720-21idleruntime-cro08:10:012
695495994122,15cyclictest762579-21unixbench_singl10:20:252
695495994120,12cyclictest0-21swapper/210:45:122
695495994031,5cyclictest768781-21apt-get10:40:122
695495994027,9cyclictest718352-21sshd08:14:182
695495994026,11cyclictest786509-21/usr/sbin/munin11:30:222
695495994026,11cyclictest786509-21/usr/sbin/munin11:30:222
695495994023,12cyclictest805268-21/usr/sbin/munin12:25:232
695485994033,4cyclictest754899-21fschecks_time10:00:170
695500993932,5cyclictest693436-21kworker/u8:1+events_unbound07:28:423
695495993931,4cyclictest727196-21apt-get08:40:132
695495993931,4cyclictest0-21swapper/212:25:002
695495993927,7cyclictest789481-21/usr/sbin/munin11:40:172
695495993927,7cyclictest739339-21/usr/sbin/munin09:15:162
695495993925,10cyclictest746222-21/usr/sbin/munin09:35:142
695495993925,10cyclictest702632-21sshd07:27:182
695488993932,4cyclictest729901-21unixbench_multi08:45:251
695485993931,5cyclictest744016-21cron09:30:000
695500993829,5cyclictest0-21swapper/311:30:153
695500993829,5cyclictest0-21swapper/311:30:143
695495993831,4cyclictest737533-21df09:10:142
695495993828,7cyclictest754712-21apt-get10:00:142
695495993828,7cyclictest709455-21sshd07:47:182
695495993827,8cyclictest753276-21/usr/sbin/munin09:55:162
695495993827,7cyclictest797469-21sshd12:04:172
695495993826,9cyclictest757570-21sshd10:06:172
695495993825,9cyclictest703654-21/usr/sbin/munin07:30:212
695495993825,10cyclictest751474-21/usr/sbin/munin09:50:162
695495993825,10cyclictest711863-21/usr/sbin/munin07:55:172
695495993824,10cyclictest795104-21/usr/sbin/munin11:55:242
695495993824,10cyclictest772494-21if_eth110:50:222
695495993823,10cyclictest759946-21/usr/sbin/munin10:15:152
695495993822,12cyclictest732822-21/usr/sbin/munin08:55:192
695488993824,10cyclictest231ktimers/107:35:121
695485993831,4cyclictest747191-21unixbench_multi09:35:250
69550099373,4cyclictest131rcu_preempt10:20:123
695500993729,4cyclictest0-21swapper/311:40:003
695500993728,6cyclictest0-21swapper/308:20:003
695500993728,5cyclictest0-21swapper/310:20:013
69550099372,5cyclictest131rcu_preempt12:30:113
695500993725,8cyclictest754476-21sendmail10:00:013
695495993731,3cyclictest779001-21apt-get11:10:132
695495993730,4cyclictest792645-21apt-get11:50:122
695495993729,5cyclictest723774-21apt-get08:30:132
695495993727,7cyclictest768438-21cron10:39:012
695495993727,7cyclictest726940-21sh08:40:012
695495993726,8cyclictest750807-21cron09:47:002
695495993726,8cyclictest736357-21/usr/sbin/munin09:05:232
695495993725,9cyclictest765871-21/usr/sbin/munin10:30:232
695495993725,9cyclictest765871-21/usr/sbin/munin10:30:232
695495993725,9cyclictest718897-21/usr/sbin/munin08:15:172
695495993724,7cyclictest707972-21cron07:45:012
695495993723,10cyclictest698673-21/usr/sbin/munin07:15:242
695495993722,11cyclictest720661-21/usr/sbin/munin08:20:162
695495993721,12cyclictest777644-21/usr/sbin/munin11:05:192
695495993719,13cyclictest801111-21date12:15:012
695485993730,4cyclictest0-21swapper/008:00:010
695485993726,6cyclictest795380-21grep11:55:250
695500993630,4cyclictest711263-21kworker/u8:1+events_unbound08:05:263
695500993624,9cyclictest438-21cron11:30:003
695495993628,5cyclictest709917-21apt-get07:50:132
695495993627,7cyclictest741135-21/usr/sbin/munin09:20:172
695495993626,7cyclictest745061-21/usr/sbin/munin09:30:222
695495993626,7cyclictest713652-21df08:00:132
695495993626,6cyclictest749567-21cat09:45:032
695495993625,8cyclictest758812-21/usr/sbin/munin10:10:242
695495993625,8cyclictest734308-21/usr/sbin/munin09:00:172
695495993625,8cyclictest734308-21/usr/sbin/munin09:00:172
695495993624,7cyclictest704917-21/usr/sbin/munin07:35:142
695495993623,9cyclictest774403-21/usr/sbin/munin10:55:192
695495993621,10cyclictest438-21cron11:40:002
695495993619,13cyclictest1-21systemd11:45:552
695488993628,6cyclictest792157-21kworker/u8:1+events_unbound11:50:561
695488993624,8cyclictest0-21swapper/107:15:021
695485993629,4cyclictest785599-21munin-plugin-st11:30:000
695485993629,4cyclictest720137-21sendmail08:20:010
69548599361,5cyclictest131rcu_preempt08:55:120
69548599361,4cyclictest131rcu_preempt08:40:120
695500993529,4cyclictest737064-21kworker/u8:1+events_unbound09:25:423
695500993529,4cyclictest723385-21kworker/u8:2+events_unbound08:30:313
695500993527,4cyclictest0-21swapper/311:00:253
695495993529,3cyclictest699698-21munin-node07:20:122
695495993526,7cyclictest808561-21/usr/sbin/munin12:35:192
695495993526,6cyclictest53-21kcompactd008:25:022
695495993522,9cyclictest775599-21apt-get11:00:122
695495993521,10cyclictest729911-21grep08:45:252
695495993520,11cyclictest742552-21munin-node09:25:122
695495993520,10cyclictest731691-21sshd08:50:342
695488993527,4cyclictest0-21swapper/108:10:011
695488993525,6cyclictest0-21swapper/108:00:011
695485993528,4cyclictest0-21swapper/009:10:000
69548599352,5cyclictest131rcu_preempt12:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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