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2025-09-18 - 05:01
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot8.osadl.org (updated Thu Sep 18, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
202216521020,1sleep30-21swapper/322:50:243
1715494992724,2cyclictest2193893-21idleruntime-cro00:40:011
1715499992623,1cyclictest0-21swapper/300:00:003
1715499992521,1cyclictest0-21swapper/300:35:013
1715497992414,8cyclictest0-21swapper/221:25:132
1715497992414,2cyclictest2097099-21sendmail23:40:002
1715497992413,2cyclictest0-21swapper/219:45:012
1715497992411,3cyclictest2154950-21irqrtprio00:15:192
19457672230,1sleep00-21swapper/022:05:180
18933482230,1sleep00-21swapper/021:30:160
171549799239,5cyclictest1909502-21sshd21:40:152
1715497992313,3cyclictest2070304-21ntp_kernel_pll_23:20:212
1715497992313,2cyclictest2016263-21apt-key22:50:002
1715494992319,2cyclictest0-21swapper/123:40:001
1715492992320,2cyclictest2145339-21munin-plugin-st00:10:000
1715492992320,2cyclictest2129268-21sh00:00:000
1715499992219,1cyclictest0-21swapper/300:40:003
1715497992219,2cyclictest2169527-21turbostat.cron00:25:012
1715494992219,2cyclictest2177762-21munin-run00:30:001
1715499992112,7cyclictest1908970-21turbostat21:40:003
171549799215,2cyclictest18739002wc21:15:202
1715497992118,2cyclictest0-21swapper/223:35:002
1715497992112,3cyclictest2073393-21sshd23:25:152
1715494992117,2cyclictest0-21swapper/119:20:001
1715492992117,3cyclictest522-21in:imuxsock19:25:010
1715492992116,3cyclictest1928177-21grep21:55:110
1715499992017,1cyclictest0-21swapper/321:50:013
1715499992017,1cyclictest0-21swapper/321:50:003
1715497992012,2cyclictest2005631-21proc_pri22:40:232
1715494992016,3cyclictest547-21gdbus20:00:001
1715494992016,3cyclictest1860542-21diskmemload21:25:151
1715494992016,2cyclictest0-21swapper/122:40:001
1715494992014,4cyclictest0-21swapper/119:45:011
1715499991916,1cyclictest0-21swapper/320:50:233
1715499991916,1cyclictest0-21swapper/320:45:173
1715499991915,1cyclictest0-21swapper/323:55:003
1715499991915,1cyclictest0-21swapper/322:50:003
171549799198,2cyclictest0-21swapper/220:25:152
1715494991916,2cyclictest2146834-21irqrtprio00:10:201
1715494991916,2cyclictest2113148-21systemd-run23:50:001
1715492991916,2cyclictest500-21avahi-daemon23:00:240
1715499991815,1cyclictest0-21swapper/322:05:183
1715499991815,1cyclictest0-21swapper/322:05:003
1715499991815,1cyclictest0-21swapper/321:10:013
1715499991815,1cyclictest0-21swapper/319:55:123
1715499991813,2cyclictest0-21swapper/320:15:013
1715497991815,2cyclictest0-21swapper/200:15:012
1715497991814,2cyclictest1936238-21tr22:00:142
1715497991814,2cyclictest1748698-21cpuspeed_turbos19:35:132
1715494991815,2cyclictest1944197-21cpuspeed_turbos22:05:151
1715494991815,2cyclictest1785518-21cut20:05:001
1715494991814,2cyclictest3004-21cron22:00:001
1715492991816,1cyclictest0-21swapper/000:35:000
1715492991815,2cyclictest3818356-21systemd-journal19:30:000
1715492991815,2cyclictest2186663-21irqcore00:35:160
1715492991815,2cyclictest2003714-21kthreadcore22:40:180
1715492991815,2cyclictest1983978-21turbostat22:30:000
1715492991815,2cyclictest1760692-21systemd-run19:45:010
1715499991714,1cyclictest0-21swapper/323:15:183
1715499991714,1cyclictest0-21swapper/320:30:193
171549999171,13cyclictest0-21swapper/320:05:013
1715497991715,1cyclictest1868589-21sh21:14:592
1715497991714,2cyclictest1901629-21gltestperf21:35:172
1715497991714,2cyclictest0-21swapper/222:20:002
1715497991713,3cyclictest1803062-21ntp_kernel_pll_20:15:212
1715497991713,3cyclictest1742167-21cron19:30:002
1715497991712,3cyclictest1816779-21cut20:30:132
1715494991714,2cyclictest514-21systemd-logind20:15:001
1715494991714,2cyclictest500-21avahi-daemon19:55:011
1715494991714,2cyclictest0-21swapper/121:25:011
1715494991713,3cyclictest1-21systemd19:20:151
1715494991713,2cyclictest1959509-21kworker/u8:0-nfsiod22:20:251
171549499171,14cyclictest1992068-21munin-plugin-st22:35:011
1715494991711,4cyclictest1841056-21grep20:45:241
1715492991714,2cyclictest1810867-21irqcore20:25:170
1715492991714,2cyclictest1786116-21gltestperf20:05:160
1715492991714,2cyclictest0-21swapper/021:40:000
1715492991713,2cyclictest0-21swapper/021:55:010
21541362160,1sleep00-21swapper/000:15:180
187852321613,1sleep30-21swapper/321:20:173
1715499991613,1cyclictest0-21swapper/323:35:203
1715499991613,1cyclictest0-21swapper/323:30:013
1715499991613,1cyclictest0-21swapper/321:05:003
1715499991613,1cyclictest0-21swapper/319:15:453
1715499991613,1cyclictest0-21swapper/300:20:213
1715499991613,1cyclictest0-21swapper/300:05:193
1715499991612,1cyclictest0-21swapper/320:35:173
1715499991612,1cyclictest0-21swapper/319:45:173
1715497991613,2cyclictest2182731-21kthreadcore00:30:202
1715497991613,2cyclictest2105431-21/usr/sbin/munin23:45:222
1715497991613,2cyclictest1944190-21tr22:05:152
1715497991613,2cyclictest1847063-21timerwakeupswit20:50:272
1715497991613,2cyclictest1773667-21cut19:55:132
1715497991613,2cyclictest0-21swapper/223:15:002
1715497991612,3cyclictest2024886-21cpu22:55:142
1715497991612,2cyclictest0-21swapper/222:20:162
1715497991610,4cyclictest1853053-21wc20:55:232
1715494991613,2cyclictest1736749-21irqcore19:25:121
1715494991613,2cyclictest0-21swapper/100:20:001
1715494991612,3cyclictest2024997-21grep22:55:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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