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2026-08-29 - 23:19

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 Sat Aug 29, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1847480996537,7cyclictest391ktimers/311:45:123
1847472995622,15cyclictest0-21swapper/207:15:012
184747299531,35cyclictest1900374-21df09:40:122
184747299493,29cyclictest1876491-21awk08:30:212
1847480994839,6cyclictest1904660-21unixbench_multi09:50:263
1847480994837,7cyclictest1913684-21sendmail10:20:003
184747299486,27cyclictest1877813-21/usr/sbin/munin08:35:172
1847472994827,17cyclictest0-21swapper/211:40:002
184747299471,41cyclictest1923280-21/usr/sbin/munin10:45:252
1847472994710,20cyclictest1956744-21latency_hist12:25:002
1847466994739,4cyclictest1934430-21latency_hist11:20:011
184747299451,37cyclictest1879378-21apt-get08:40:152
1847480994437,4cyclictest1868905-21munin-plugin-st08:10:003
184747299443,36cyclictest1872542-21sshd08:20:072
184747299441,40cyclictest1959115-21/usr/sbin/munin12:30:202
184747299441,40cyclictest1959115-21/usr/sbin/munin12:30:192
184747299441,27cyclictest1868013-21ntpq08:05:232
1847465994436,4cyclictest1888912-21unixbench_multi09:05:270
1847465994433,8cyclictest151rcuc/011:55:120
1847472994318,21cyclictest0-21swapper/208:10:162
184747299431,37cyclictest1944936-21/usr/sbin/munin11:50:142
184747299431,37cyclictest1910608-21diskstats10:10:142
184747299431,35cyclictest1898555-21apt-get09:35:142
1847466994331,9cyclictest1896169-21grep09:25:261
1847465994235,4cyclictest1934128-21apt-get11:20:010
184746599421,14cyclictest11-21ksoftirqd/008:55:120
1847472994134,4cyclictest1937770-21munin-plugin-st11:30:002
184747299411,37cyclictest1960982-21/usr/sbin/munin12:35:242
184747299411,37cyclictest1882963-21fschecks_time08:50:182
184747299411,37cyclictest1860614-21/usr/sbin/munin07:45:262
184747299411,35cyclictest1948988-21/usr/sbin/munin12:00:232
184747299411,34cyclictest1929258-21apt-get11:05:122
184747299411,34cyclictest1887900-21apt-get09:05:132
184747299410,32cyclictest0-21swapper/210:35:162
1847466994131,7cyclictest1890853-21grep09:10:261
1847465994133,5cyclictest1884234-21cron08:55:010
1847465994132,5cyclictest53-21kcompactd007:45:260
1847472994018,17cyclictest0-21swapper/210:50:162
184747299401,36cyclictest1916222-21/usr/sbin/munin10:25:242
184747299401,36cyclictest1914365-21meminfo10:20:202
184747299401,36cyclictest1895361-21/usr/sbin/munin09:25:162
184747299401,34cyclictest1933383-21/usr/sbin/munin11:15:252
184747299401,34cyclictest1874817-21ntp_states08:25:242
184747299400,37cyclictest1932070-21sshd11:10:522
184747299400,36cyclictest1862302-21sshd07:50:092
1847466994031,6cyclictest1851636-21idleruntime-cro07:20:001
1847465994030,7cyclictest1940732-21unixbench_singl11:35:260
1847472993927,8cyclictest1929019-21sh11:05:012
184747299392,32cyclictest1949942-21apt-get12:05:122
184747299391,35cyclictest1943641-21/usr/sbin/munin11:45:202
184747299391,35cyclictest1906217-21/usr/sbin/munin09:55:252
184747299391,34cyclictest1909644-21cat10:05:272
184747299391,34cyclictest1855491-21/usr/sbin/munin07:30:172
184747299391,33cyclictest1941418-21apt-get11:40:122
184747299391,33cyclictest1912644-21memory10:15:212
184747299391,33cyclictest1908706-21latency_hist10:05:012
184747299390,36cyclictest1889814-21apt-get09:10:132
184746599395,8cyclictest11-21ksoftirqd/011:50:120
1847465993933,4cyclictest1918628-21kworker/u8:3+events_unbound11:25:570
184747299383,30cyclictest1925956-21diskstats10:55:152
1847472993828,7cyclictest1858463-21sendmail07:40:002
184747299382,33cyclictest1872127-21cron08:18:002
184747299381,35cyclictest53-21kcompactd012:27:132
184747299381,34cyclictest1952127-21if_err_eth112:10:162
184747299381,34cyclictest1947638-21sshd11:55:572
184747299381,34cyclictest1921867-21cron10:41:012
184747299381,34cyclictest1918037-21/usr/sbin/munin10:30:242
184747299381,34cyclictest1918037-21/usr/sbin/munin10:30:232
184747299381,34cyclictest1897370-21/usr/sbin/munin09:30:192
184747299381,34cyclictest1859154-21meminfo07:40:212
184747299381,34cyclictest1852172-21/usr/sbin/munin07:20:192
184747299381,34cyclictest1850500-21/usr/sbin/munin07:15:182
184747299381,33cyclictest1853703-21/usr/sbin/munin07:25:172
184747299381,33cyclictest1853703-21/usr/sbin/munin07:25:162
184747299381,32cyclictest1953663-21df_inode12:15:152
184747299381,32cyclictest1934128-21apt-get11:20:052
184747299381,32cyclictest1904395-21/usr/sbin/munin09:50:242
184747299381,32cyclictest1864466-21/usr/sbin/munin07:55:202
1847472993812,23cyclictest204-21dbus-daemon08:00:162
1847465993830,6cyclictest1831759-21kworker/u8:2+events_unbound07:26:420
1847465993830,6cyclictest1831759-21kworker/u8:2+events_unbound07:26:420
1847480993722,11cyclictest391ktimers/312:05:113
184747299371,33cyclictest1891717-21sshd09:15:082
184747299371,33cyclictest1887222-21/usr/sbin/munin09:00:262
1847466993726,7cyclictest1865005-21tail07:55:251
1847465993731,4cyclictest1901689-21kworker/u8:2+events_unbound09:45:390
1847465993715,6cyclictest131rcu_preempt07:40:060
1847480993629,4cyclictest1849382-21munin-node07:15:013
1847480993627,5cyclictest1872323-21sendmail08:20:013
184747299362,29cyclictest1884480-21apt-get08:55:132
184747299361,32cyclictest1893968-21/usr/sbin/munin09:20:192
184747299361,32cyclictest1881204-21/usr/sbin/munin08:45:162
1847465993628,6cyclictest1908176-21kworker/u8:1+events_unbound10:00:420
1847480993527,5cyclictest1874016-21apt08:25:003
1847480993527,4cyclictest0-21swapper/309:40:143
1847480993522,9cyclictest0-21swapper/311:20:003
1847480993522,8cyclictest391ktimers/308:10:133
184747299351,31cyclictest1938446-21missed_timers11:30:212
1847466993528,4cyclictest0-21swapper/109:50:001
1847466993524,8cyclictest231ktimers/109:30:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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