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2025-06-21 - 22:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack5slot4s.osadl.org (updated Sat Jun 21, 2025 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
715599145141,3cyclictest0-21swapper/207:15:012
715599123119,3cyclictest0-21swapper/207:10:022
6726212097,9sleep20-21swapper/207:06:362
68042119108,7sleep30-21swapper/307:07:373
715299115106,6cyclictest0-21swapper/107:15:011
67762113100,9sleep00-21swapper/007:07:140
2274211096,10sleep10-21swapper/107:05:181
71499910489,14cyclictest13002-21fschecks_time07:15:010
7152998784,2cyclictest0-21swapper/107:10:021
7149997967,11cyclictest0-21swapper/007:10:020
313442560,0sleep20-21swapper/209:55:252
127352430,0chrt0-21swapper/312:05:283
296702330,1sleep30-21swapper/310:24:593
714999310,16cyclictest0-21swapper/011:05:150
7155992925,3cyclictest21462-21kworker/u16:2+events_unbound12:15:022
7152992722,4cyclictest30358-21kworker/u16:0+events_unbound07:45:031
7155992521,3cyclictest14861-21kworker/u16:1+events_unbound09:45:282
714999250,24cyclictest0-21swapper/008:20:170
7149992420,3cyclictest30358-21kworker/u16:0+events_unbound09:20:000
7155992117,3cyclictest14861-21kworker/u16:1+events_unbound07:40:162
7155992016,3cyclictest30358-21kworker/u16:0+events_unbound08:05:272
7152992017,2cyclictest15774-21ps08:10:301
7155991915,3cyclictest14861-21kworker/u16:1+events_unbound10:35:302
715299194,13cyclictest0-21swapper/108:45:141
715299192,15cyclictest6340-21apt-get08:35:141
715299192,15cyclictest13741-21kthreadcore12:35:231
715299192,13cyclictest873-21apt-get08:30:141
7152991916,2cyclictest31355-21basename11:55:001
7152991916,2cyclictest22918-21munin-run09:20:001
715299191,13cyclictest1293-21apt-get09:00:141
7155991814,3cyclictest30358-21kworker/u16:0+events_unbound08:55:282
715299184,13cyclictest6462-21kthreadcore11:00:221
715299184,10cyclictest27840-21apt-get08:25:141
715299183,6cyclictest22777-21apt-get08:50:151
715299181,16cyclictest21403-21/usr/sbin/munin11:15:221
715299181,15cyclictest8540-21aten2_r5power_p10:35:181
715299181,15cyclictest25767-21/usr/sbin/munin12:15:261
714999180,17cyclictest0-21swapper/009:35:140
7155991713,3cyclictest30358-21kworker/u16:0+events_unbound08:20:292
715299179,6cyclictest6653-21kthreadcore10:30:241
715299174,11cyclictest322-21systemd-journal12:05:011
715299173,8cyclictest0-21swapper/108:20:111
715299172,13cyclictest18978-21apt-get10:15:141
715299172,11cyclictest30135-21tr09:25:231
7152991712,3cyclictest14510-21irqrtprio10:10:201
715299171,13cyclictest23960-21if_enp0s25.209:20:181
715299171,12cyclictest741-21snmpd09:33:181
715299171,11cyclictest20440-21apt-get07:20:141
715299171,10cyclictest421-21df_inode12:25:221
715299171,10cyclictest26368-21seq07:50:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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