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2026-08-05 - 18:43

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
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Wed Aug 05, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203201523750,1sleep3575-21kworker/3:2-events11:52:563
203637521810,6sleep30-21swapper/311:57:493
19682602560,5chrt0-21swapper/010:47:570
1894068994737,7cyclictest1931894-21latency_hist10:10:010
1894072994638,6cyclictest1893909-21latency_hist07:10:001
189407499392,17cyclictest1986893-21apt-get11:07:492
1894072993933,4cyclictest1981500-21apt-key11:00:001
189407499382,18cyclictest2036257-21apt-get11:57:482
1894072993832,4cyclictest2060675-21munin-run12:20:001
1894068993833,4cyclictest1927225-21kworker/u8:1+events_unbound11:27:560
1894068993829,6cyclictest275-21systemd-journal11:57:530
1894074993724,11cyclictest2061375-21cpuspeed_turbos12:22:522
1894074993724,11cyclictest2061375-21cpuspeed_turbos12:22:522
1894074993722,13cyclictest2066431-21aten2_r5power_e12:27:492
1894074993722,13cyclictest1927608-21cpuspeed_turbos10:07:522
1894074993721,14cyclictest2015827-21unixbench_singl11:33:102
1894072993733,2cyclictest1972580-21irqrtprio10:52:561
1894072993631,3cyclictest1992537-21irqrtprio11:12:561
1894068993629,5cyclictest1997105-21fschecks_time11:17:520
1894068993627,7cyclictest1932709-21fschecks_time10:12:540
1894074993521,12cyclictest1942469-21cpuspeed_turbos10:22:512
1894074993518,14cyclictest1911207-21idleruntime-cro09:10:002
1894072993529,4cyclictest1899209-21cron07:35:001
1894072993528,5cyclictest1902302-21cron08:00:001
1894068993526,7cyclictest2061126-21/usr/sbin/munin12:23:060
1894068993526,7cyclictest2061126-21/usr/sbin/munin12:23:060
1894068993526,7cyclictest1966447-21cron10:45:000
189407499340,18cyclictest2011133-21true11:30:012
1894072993425,6cyclictest275-21systemd-journal12:09:111
1894068993429,3cyclictest0-21swapper/010:18:080
1894068993427,5cyclictest1904161-21cron08:15:000
1894068993425,7cyclictest2016017-21cron11:35:000
1894074993329,2cyclictest275-21systemd-journal11:00:002
1894074993324,7cyclictest275-21systemd-journal11:50:002
1894074993318,13cyclictest2075854-21latency_hist12:35:002
1894074993318,13cyclictest1996272-21cron11:15:002
189407499330,18cyclictest2046722-21taskset12:07:562
1894072993329,2cyclictest1909951-21cron09:00:001
1894072993328,3cyclictest1901725-21systemd-run07:55:001
1894072993326,5cyclictest1911194-21cron09:10:001
1894072993324,7cyclictest1957033-21/usr/sbin/munin10:38:081
1894072993324,7cyclictest1956582-21cron10:35:001
1894068993327,4cyclictest0-21swapper/012:20:000
1894068993326,5cyclictest2080754-21cron12:40:000
1894068993326,5cyclictest2046512-21fschecks_count12:07:540
1894068993326,5cyclictest1991105-21unixbench_multi11:08:070
1894068993326,5cyclictest1900466-21cron07:45:000
189406899331,30cyclictest1894761-21kworker/0:0+events07:25:200
189407499321,28cyclictest1941222-21/usr/sbin/munin10:18:052
189407499320,13cyclictest2016492-21apt-get11:37:492
189407499320,13cyclictest1971858-21apt-get10:52:472
1894072993227,3cyclictest1897745-21cron07:25:001
1894072993227,3cyclictest1897745-21cron07:25:001
1894072993226,4cyclictest1971193-21unixbench_singl10:48:081
1894072993225,5cyclictest1941755-21cron10:20:001
1894068993226,4cyclictest1977020-21cpuspeed_turbos10:57:520
1894068993226,4cyclictest1922731-21fschecks_count10:02:540
1894068993225,5cyclictest2025130-21needreboot11:43:000
1894074993123,6cyclictest1908246-21base6408:45:012
189407299318,13cyclictest1926178-21ld10:03:041
1894072993126,3cyclictest2011138-21systemd-run11:30:011
1894072993125,4cyclictest2066601-21cpuspeed_turbos12:27:501
1894072993125,4cyclictest1917678-21cpuspeed_turbos09:57:471
1894072993125,4cyclictest1917678-21cpuspeed_turbos09:57:471
1894072993124,5cyclictest1932624-21fschecks_count10:12:531
1894072993123,6cyclictest1907265-21latency_hist08:40:011
189407299311,26cyclictest2036200-21sd-pam11:57:531
1894068993125,4cyclictest1976100-21unixbench_multi10:53:080
1894068993125,4cyclictest1946686-21cron10:25:000
1894068993123,7cyclictest2055492-21unixbench_singl12:13:080
189406899312,28cyclictest1976349-21kworker/0:2+events11:53:060
18936582313,3sleep00-21swapper/007:06:540
1894074993024,4cyclictest2025663-21unixbench_multi11:43:082
1894072993024,4cyclictest2001212-21cron11:19:591
1894072993024,4cyclictest1914518-21cron09:35:001
1894072993024,4cyclictest1897114-21cron07:20:001
1894072993023,5cyclictest2001825-21aten2_r5power_v11:22:531
1894072993023,5cyclictest1905406-21cron08:25:001
1894072993022,6cyclictest275-21systemd-journal12:35:011
1894072993022,6cyclictest1982210-21cpuspeed_turbos11:02:511
1894072993015,4cyclictest2033446-21kthreadcore11:52:581
189406899307,13cyclictest2075464-21/usr/sbin/munin12:33:070
1894068993025,3cyclictest2005400-21needreboot11:23:030
1894068993025,3cyclictest1907897-21apt08:45:010
1894068993024,4cyclictest1982205-21cpuspeed_turbos11:02:510
1894068993024,4cyclictest1957349-21fschecks_count10:37:540
18936052304,10sleep20-21swapper/207:06:122
189407499291,24cyclictest1898373-21apt-get07:30:022
1894072992921,6cyclictest275-21systemd-journal11:38:121
1894072992918,3cyclictest161rcu_preempt11:47:531
1894068992923,5cyclictest1881799-21kworker/u8:0+flush-8:007:15:000
1894068992920,7cyclictest1995596-21ntpq11:13:040
189407499281,23cyclictest2051171-21apt-get12:12:482
1894074992812,13cyclictest1913062-21turbostat.cron09:25:002
1894074992810,16cyclictest0-21swapper/209:57:542
1894074992810,16cyclictest0-21swapper/209:57:542
1894072992822,4cyclictest2025906-21cron11:45:001
1894072992822,4cyclictest1908725-21cron08:50:001
189407299280,16cyclictest1991297-21taskset11:09:271
189406899286,14cyclictest0-21swapper/008:15:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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