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2026-05-19 - 09:29
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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 rack8slot4.osadl.org (updated Tue May 19, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17212122231169,19sleep30-21swapper/319:07:243
17213022230171,19sleep10-21swapper/119:08:441
17212532223166,46sleep60-21swapper/619:08:016
17213772219188,21sleep20-21swapper/219:09:502
17212702212183,18sleep50-21swapper/519:08:165
17212632211180,20sleep70-21swapper/719:08:107
17211362204173,20sleep40-21swapper/419:06:224
17213482202168,23sleep00-21swapper/019:09:230
172163299421,40cyclictest1-21systemd21:10:023
172163899320,31cyclictest1755635-21cron20:10:015
1721642993126,4cyclictest1780673-21unix_chkpwd20:55:017
172164199310,30cyclictest1853158-21munin-run23:05:016
172164199310,29cyclictest1766766-21cron20:30:016
172164199310,29cyclictest1766766-21cron20:30:016
1721636993126,4cyclictest1-21systemd19:25:014
172163699310,31cyclictest1-21systemd21:55:024
1721632993128,3cyclictest0-21swapper/322:35:013
172163099310,30cyclictest1792244-21latency_hist21:15:022
1721625993128,2cyclictest1736161-21cron19:35:010
1721642993028,1cyclictest290-21plymouthd23:15:017
1721642993028,1cyclictest1747728-21apt-get19:55:127
172164299300,29cyclictest1850344-21cron23:00:017
172164299300,29cyclictest1783917-21apt-get21:00:137
172164299300,29cyclictest0-21swapper/722:50:117
1721641993028,1cyclictest1814178-21cron21:55:026
1721638993028,1cyclictest0-21swapper/520:05:015
172163899300,29cyclictest0-21swapper/521:25:005
172163699300,29cyclictest1861869-21pool-spawner23:20:034
172163699300,29cyclictest1809006-21apt-get21:45:154
1721632993026,3cyclictest1870312-21apt-get23:35:113
1721632993025,4cyclictest0-21swapper/321:40:013
172163299300,29cyclictest1887106-21apt-get00:05:133
172163299300,29cyclictest1887106-21apt-get00:05:133
172163299300,29cyclictest1884330-21apt-get00:00:143
172163299300,29cyclictest1884330-21apt-get00:00:143
172163299300,29cyclictest1-21systemd20:35:013
1721630993027,3cyclictest1-21systemd19:50:002
172163099300,29cyclictest1903364-21munin-run00:35:002
172163099300,29cyclictest1894998-21cron00:20:012
172163099300,29cyclictest1769548-21cron20:35:012
1721627993028,1cyclictest0-21swapper/123:20:021
1721625993028,1cyclictest0-21swapper/019:45:010
1721625993026,3cyclictest1822537-21cron22:10:020
172162599300,29cyclictest1897781-21cron00:25:010
172162599300,29cyclictest1883873-21cron00:00:010
1721642992928,1cyclictest0-21swapper/719:10:037
1721642992927,1cyclictest1853581-21apt-get23:05:127
172164299290,28cyclictest1744950-21apt-get19:50:137
172164299290,28cyclictest0-21swapper/723:15:157
172164299290,28cyclictest0-21swapper/722:45:127
172164299290,28cyclictest0-21swapper/722:10:127
172164299290,28cyclictest0-21swapper/722:05:027
172164299290,28cyclictest0-21swapper/720:55:127
1721641992927,1cyclictest1855920-21sh23:10:016
1721641992927,1cyclictest1817414-21apt-get22:00:136
1721641992927,1cyclictest0-21swapper/622:15:136
1721641992927,1cyclictest0-21swapper/619:10:126
172164199290,28cyclictest0-21swapper/623:10:136
172164199290,28cyclictest0-21swapper/622:15:016
172164199290,28cyclictest0-21swapper/621:55:126
172164199290,28cyclictest0-21swapper/621:40:116
172164199290,28cyclictest0-21swapper/620:45:136
172163899290,29cyclictest0-21swapper/521:15:025
172163899290,28cyclictest0-21swapper/523:35:115
172163899290,1cyclictest1847585-21munin-run22:55:005
172163899290,1cyclictest0-21swapper/520:45:135
172163699290,28cyclictest1828547-21apt-get22:20:114
172163699290,28cyclictest1753300-21apt-get20:05:124
172163699290,28cyclictest0-21swapper/421:10:014
172163699290,1cyclictest0-21swapper/422:05:124
1721632992928,1cyclictest290-21plymouthd20:15:013
1721632992928,1cyclictest1830931-21922:25:003
1721632992928,1cyclictest0-21swapper/319:10:113
1721632992927,1cyclictest0-21swapper/319:15:143
1721632992925,3cyclictest1864307-21cron23:25:013
172163299290,28cyclictest0-21swapper/321:15:053
172163299290,1cyclictest0-21swapper/322:25:123
1721630992928,1cyclictest1778342-21apt-get20:50:112
172163099290,29cyclictest1858692-21cron23:15:012
172163099290,28cyclictest0-21swapper/223:20:132
172163099290,28cyclictest0-21swapper/221:10:122
172163099290,28cyclictest0-21swapper/219:50:132
172163099290,28cyclictest0-21swapper/219:40:142
172162799290,28cyclictest0-21swapper/122:30:121
172162799290,28cyclictest0-21swapper/121:30:111
172162799290,28cyclictest0-21swapper/121:20:111
172162799290,28cyclictest0-21swapper/121:15:051
172162799290,28cyclictest0-21swapper/121:10:111
172162799290,28cyclictest0-21swapper/120:00:011
172162799290,28cyclictest0-21swapper/119:35:011
172162799290,28cyclictest0-21swapper/100:15:011
172162599290,28cyclictest0-21swapper/023:10:130
172162599290,28cyclictest0-21swapper/023:05:110
172162599290,28cyclictest0-21swapper/021:55:110
172162599290,28cyclictest0-21swapper/021:05:120
172162599290,28cyclictest0-21swapper/019:50:110
172162599290,1cyclictest0-21swapper/021:45:140
1721642992828,0cyclictest0-21swapper/719:40:157
1721642992827,1cyclictest1769986-21apt-get20:35:137
1721642992827,1cyclictest0-21swapper/722:15:147
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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