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2026-06-05 - 22:23

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 Fri Jun 05, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1957125995425,25cyclictest1961292-21sendmail07:20:010
1957132995037,10cyclictest311ktimers/207:40:122
195712599471,36cyclictest0-21swapper/009:50:110
195712599461,40cyclictest0-21swapper/010:25:110
195712599461,36cyclictest0-21swapper/011:25:120
195712599461,34cyclictest0-21swapper/010:00:120
195712599451,41cyclictest1985398-21apt-get08:30:110
195712599451,39cyclictest2061210-21/usr/sbin/munin12:10:140
195712599451,39cyclictest1968469-21/usr/sbin/munin07:40:160
1957127994430,9cyclictest231ktimers/107:40:121
1957125994436,4cyclictest1958822-21apt-config07:15:010
1957125994423,16cyclictest0-21swapper/010:55:260
1957125994417,23cyclictest0-21swapper/007:30:170
195712599441,40cyclictest2015679-21awk09:55:250
195712599441,40cyclictest1982322-21/usr/sbin/munin08:20:170
1957127994330,9cyclictest231ktimers/110:45:111
195712599432,25cyclictest2019485-21cron10:09:590
195712599432,25cyclictest2019485-21cron10:09:590
1957125994319,22cyclictest0-21swapper/009:25:140
195712599431,39cyclictest2050302-21cron11:39:010
195712599431,29cyclictest2068448-21diskstats12:30:140
1957125994226,13cyclictest2068145-21latency_hist12:30:010
1957125994222,15cyclictest0-21swapper/010:20:250
195712599421,38cyclictest1974202-21/usr/sbin/munin07:55:240
195712599421,38cyclictest1974202-21/usr/sbin/munin07:55:230
195712599421,36cyclictest1993921-21apt-get08:55:110
195712599420,40cyclictest0-21swapper/010:30:210
1957127994129,8cyclictest231ktimers/111:35:121
195712599413,33cyclictest2028588-21/usr/sbin/munin10:35:180
195712599412,33cyclictest2033374-21apt-get10:50:120
195712599411,37cyclictest2003403-21/usr/sbin/munin09:20:230
195712599411,37cyclictest1971888-21fschecks_count07:50:160
195712599411,35cyclictest2030077-21/usr/sbin/munin10:40:120
195712599411,31cyclictest0-21swapper/011:20:110
195712599411,25cyclictest2002395-21apt-key09:20:010
195712599411,25cyclictest2002395-21apt-key09:20:000
195712599410,37cyclictest0-21swapper/011:05:110
195712599410,36cyclictest1988941-21diskstats08:40:160
195712599410,36cyclictest0-21swapper/012:05:130
1957132994011,5cyclictest131rcu_preempt11:05:122
1957127994027,11cyclictest231ktimers/108:05:121
195712599401,36cyclictest2012142-21/usr/sbin/munin09:45:250
195712599401,36cyclictest1978859-21/usr/sbin/munin08:10:170
195712599401,35cyclictest2006079-21apt09:30:090
195712599401,34cyclictest2070084-21grep12:35:130
195712599401,34cyclictest1999137-21/usr/sbin/munin09:10:120
195712599401,34cyclictest1999137-21/usr/sbin/munin09:10:110
195712599401,34cyclictest1980397-21/usr/sbin/munin08:15:150
195712599401,34cyclictest1966973-21/usr/sbin/munin07:35:210
195712599401,33cyclictest2031672-21apt-get10:45:110
195712599400,32cyclictest0-21swapper/012:00:100
1957132993933,4cyclictest1992216-21kworker/u8:1+events_unbound08:53:522
1957127993927,8cyclictest1958903-21ls07:15:011
195712599392,33cyclictest2019836-21/usr/sbin/munin10:10:120
195712599391,35cyclictest2051257-21/usr/sbin/munin11:40:210
195712599391,35cyclictest2022796-21sshd10:18:570
195712599391,35cyclictest1992527-21/usr/sbin/munin08:50:160
195712599391,35cyclictest1990631-21df08:45:140
195712599391,35cyclictest1970358-21/usr/sbin/munin07:45:190
195712599391,34cyclictest2064995-21/usr/sbin/munin12:20:150
195712599391,33cyclictest2007783-21/usr/sbin/munin09:35:110
195712599391,33cyclictest1987218-21df_inode08:35:170
195712599391,32cyclictest0-21swapper/008:05:130
1957136993825,8cyclictest0-21swapper/308:20:013
1957127993830,4cyclictest0-21swapper/108:50:011
195712599386,29cyclictest395-21dbus-daemon11:45:020
195712599382,33cyclictest1961866-21/usr/sbin/munin07:20:190
195712599381,34cyclictest2063071-21if_eth012:15:140
195712599381,34cyclictest2048437-21cron11:32:000
195712599381,34cyclictest1995991-21grep09:00:160
195712599381,34cyclictest1984041-21/usr/sbin/munin08:25:190
195712599381,33cyclictest2041405-21grep11:10:250
195712599381,33cyclictest2036904-21/usr/sbin/munin11:00:130
195712599381,32cyclictest2010097-21/usr/sbin/munin09:40:210
195712599381,31cyclictest2054263-21apt-get11:50:110
195712599381,31cyclictest2054263-21apt-get11:50:100
195712599381,31cyclictest2042113-21runrttasks11:15:120
195712599380,34cyclictest0-21swapper/011:55:110
195712599380,34cyclictest0-21swapper/011:55:100
1957136993727,6cyclictest0-21swapper/308:15:013
1957136993726,7cyclictest2068097-21apt-key12:30:003
195712599371,33cyclictest1975509-21irqstats08:00:170
195712599371,33cyclictest1963534-21/usr/sbin/munin07:25:170
1957136993626,7cyclictest2054034-21idleruntime-cro11:50:003
1957136993625,7cyclictest1968135-21taskset07:40:013
1957132993626,7cyclictest2048231-21grep11:30:272
1957127993630,4cyclictest2065951-21kworker/u8:1+events_unbound12:29:121
1957127993611,4cyclictest2038464-21cp11:05:011
195712599360,33cyclictest1997347-21cpu09:05:130
1957136993522,11cyclictest391ktimers/310:55:133
1957132993527,4cyclictest0-21swapper/211:45:222
195713299352,5cyclictest131rcu_preempt08:25:132
1957132993523,8cyclictest0-21swapper/207:15:002
195712799354,5cyclictest131rcu_preempt09:45:121
1957127993526,5cyclictest0-21swapper/111:45:011
1957127993525,5cyclictest0-21swapper/110:20:151
1957136993428,4cyclictest2001076-21kworker/u8:1+events_unbound09:43:543
1957132993426,5cyclictest645-21runrttasks11:15:112
1957132993426,4cyclictest2069268-21timerwakeupswit12:30:232
1957132993424,6cyclictest2027595-21unixbench_singl10:30:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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