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2026-07-28 - 06:16

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 Tue Jul 28, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
206110721590,6sleep30-21swapper/322:13:103
20015662990,6sleep30-21swapper/321:15:013
1875401996252,8cyclictest278-21systemd-journal22:33:091
1875397996253,6cyclictest2026474-21latency_hist21:40:010
21879972610,2chrt481ktimers/300:22:573
1875397995243,6cyclictest2091447-21latency_hist22:45:010
1875401994638,6cyclictest2076364-21apt-get22:30:011
1875401994637,6cyclictest2011392-21latency_hist21:25:011
1875401994439,4cyclictest1860565-21kworker/u8:2+flush-8:019:53:071
1875401994433,9cyclictest2040551-21ntpq21:53:001
1875401994237,4cyclictest1967092-21kworker/u8:1+events_unbound22:40:001
1875397994234,6cyclictest2155750-21latency_hist23:50:010
1875397994134,5cyclictest1967092-21kworker/u8:1+flush-8:020:47:540
22046372400,7sleep30-21swapper/300:38:023
1875401994035,4cyclictest1907380-21kworker/u8:3+flush-8:020:33:091
1875397993933,4cyclictest2141372-21apt-get23:37:510
1875397993930,6cyclictest2185413-21latency_hist00:20:010
1875397993832,4cyclictest2096210-21kworker/u8:3+events_unbound22:52:550
1875397993829,7cyclictest2164868-21ntpq23:58:030
19006682370,4sleep0201rcuc/019:32:590
1875401993732,4cyclictest1875276-21kworker/u8:1+flush-8:019:17:561
1875401993631,3cyclictest2175558-21kworker/u8:3+events_unbound00:27:571
1875401993626,8cyclictest1937006-21latency_hist20:10:001
1875397993628,6cyclictest278-21systemd-journal23:35:010
1875397993626,8cyclictest2126790-21diskstats23:22:540
1875401993530,3cyclictest2098994-21kthreadcore22:53:001
1875401993529,4cyclictest1967092-21kworker/u8:1+flush-8:023:12:581
1875401993526,7cyclictest1972285-21/usr/sbin/munin20:48:071
1875401993526,6cyclictest1927122-21latency_hist20:00:021
1875397993525,8cyclictest2065523-21ntpq22:18:020
1875403993428,4cyclictest1967092-21kworker/u8:1+flush-8:020:48:062
1875401993429,4cyclictest2006666-21kworker/u8:3+flush-8:021:43:061
1875401993427,5cyclictest1907380-21kworker/u8:3+flush-8:020:38:081
1875401993426,6cyclictest2056090-21apt-get22:10:001
1875403993328,3cyclictest2136495-21aten2_r5power_e23:32:542
1875403993328,3cyclictest2115893-21unixbench_multi23:08:102
1875401993328,4cyclictest1967092-21kworker/u8:1+events_unbound22:22:551
1875401993328,3cyclictest2116153-21kworker/u8:0+events_unbound23:22:571
1875401993328,3cyclictest1992660-21irqcore21:08:001
1875401993327,4cyclictest1976772-21kworker/u8:0+flush-8:021:38:081
1875401993325,6cyclictest1932075-21latency_hist20:05:001
1875401993323,8cyclictest278-21systemd-journal19:40:001
187540199330,30cyclictest2126098-21munin-run23:20:011
1875397993327,5cyclictest1976772-21kworker/u8:0+events_unbound22:05:000
1875397993327,5cyclictest1976772-21kworker/u8:0+events_unbound22:05:000
1875397993327,4cyclictest1838725-21kworker/u8:4+flush-8:019:15:000
1875397993326,5cyclictest2106002-21grep22:58:090
1875397993324,7cyclictest2191147-21uniq00:27:560
18707622334,9sleep20-21swapper/219:07:192
1875403993223,7cyclictest278-21systemd-journal23:55:002
1875401993228,3cyclictest1942130-21latency_hist20:15:011
1875401993228,3cyclictest1942130-21latency_hist20:15:001
1875401993228,3cyclictest1882407-21kworker/u8:0+flush-8:019:33:071
1875401993227,3cyclictest2154970-21needreboot23:48:021
1875401993226,4cyclictest2175558-21kworker/u8:3+events_unbound00:23:061
1875401993225,5cyclictest2110963-21grep23:03:121
1875401993225,5cyclictest2110963-21grep23:03:111
1875397993228,2cyclictest769-21mta-sts-daemon19:40:030
1875397993224,5cyclictest1991603-21latency_hist21:05:010
1875397993224,5cyclictest1991603-21latency_hist21:05:000
1875397993220,4cyclictest1860565-21kworker/u8:2+flush-8:020:59:470
1875401993126,3cyclictest2176240-21cpuspeed_turbos00:12:541
1875401993125,4cyclictest1907380-21kworker/u8:3+flush-8:020:18:111
1875397993126,3cyclictest1957998-21irqcore20:32:580
1875401993026,3cyclictest2126338-21kworker/u8:3+events_unbound23:52:591
1875401993025,4cyclictest1976772-21kworker/u8:0+flush-8:021:28:061
1875401993024,4cyclictest2056794-21apt-get22:12:501
1875401993022,6cyclictest1907620-21apt-get19:42:511
1875397993026,2cyclictest1992292-21tr21:07:540
1875397993025,3cyclictest1937027-21systemd-run20:10:000
1875397993024,4cyclictest2201224-21fschecks_count00:37:550
1875397993022,6cyclictest2107002-21fschecks_count23:02:550
1875397993022,6cyclictest2107002-21fschecks_count23:02:550
1875401992924,4cyclictest1967092-21kworker/u8:1+flush-8:021:18:071
1875401992923,4cyclictest2066038-21unixbench_singl22:18:101
1875401992923,4cyclictest2006666-21kworker/u8:3+events_unbound21:58:031
1875401992923,4cyclictest1838725-21kworker/u8:4+events_unbound19:13:121
1875401992922,5cyclictest2165634-40logrotate00:00:001
1875401992921,6cyclictest2036359-21latency_hist21:50:011
1875397992924,4cyclictest1860565-21kworker/u8:2+flush-8:019:52:520
1875397992924,3cyclictest2200222-21cron00:35:000
1875397992924,3cyclictest2006422-21systemctl21:20:010
1875397992923,4cyclictest1926898-21unixbench_multi19:58:090
1875397992922,5cyclictest1875276-21kworker/u8:1+flush-8:019:23:260
1875397992917,11cyclictest1906897-21apt-get19:40:000
19238342280,5sleep3451irq_work/319:57:583
1875403992825,2cyclictest2205436-21idleruntime-cro00:40:002
1875403992824,2cyclictest1926872-21unixbench_multi19:58:092
1875403992823,3cyclictest401-21dbus-daemon22:30:002
1875403992823,3cyclictest2190945-21aten2_r5power_v00:27:532
1875403992823,3cyclictest2121880-21fschecks_time23:17:552
1875403992822,4cyclictest2066793-21aten2_r5power_p22:22:532
1875401992821,5cyclictest2091915-21apt-get22:47:511
1875401992821,4cyclictest0-21swapper/119:23:351
1875397992823,4cyclictest2145884-21kworker/u8:2+flush-8:000:03:580
1875397992822,4cyclictest1927824-21cpuspeed_turbos20:02:540
1875397992820,6cyclictest2096117-21unixbench_multi22:48:100
1875403992723,2cyclictest0-21swapper/220:15:002
1875403992723,2cyclictest0-21swapper/220:15:002
1875403992722,3cyclictest1966636-21unixbench_singl20:38:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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