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2025-12-23 - 00:06
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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
Characteristics of the highest latencies:
System rackcslot4.osadl.org (updated Mon Dec 22, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17644202254213,27sleep10-21swapper/107:05:591
17647422246178,52sleep00-21swapper/007:09:280
176489499563,9cyclictest1847838-21apt-get10:35:140
176489499562,14cyclictest1863843-21apt-get11:15:150
18454322530,4sleep00-21swapper/010:30:010
176489499532,12cyclictest1801667-21apt-get08:40:130
176489499523,7cyclictest1787592-21apt-get08:05:130
176489499503,10cyclictest1791481-21apt-get08:15:150
18170942490,4sleep11817060-21munin-run09:20:011
18170942490,4sleep11817060-21munin-run09:20:001
1764894994914,12cyclictest1861902-21apt-get11:10:150
18357922480,3sleep11835795-21latency10:05:191
179699440,3rtkit-daemon0-21swapper/010:18:190
179699440,3rtkit-daemon0-21swapper/010:18:190
176489499442,10cyclictest1879443-21apt-get11:55:140
179699420,3rtkit-daemon0-21swapper/010:47:420
176489499423,8cyclictest1769543-21apt-get07:20:150
176489499412,10cyclictest1865811-21apt-get11:20:120
179699400,3rtkit-daemon0-21swapper/010:54:530
176489499402,7cyclictest1831309-21apt-get09:55:150
179699390,3rtkit-daemon0-21swapper/010:40:050
176489499393,9cyclictest1833274-21apt-get10:00:150
176489499391,10cyclictest1829365-21apt-get09:50:120
176489499390,8cyclictest1777196-21idleruntime-cro07:40:010
176489499383,8cyclictest1859953-21apt-get11:05:150
176489499382,13cyclictest1888441-21appstreamcli12:19:150
179699370,5rtkit-daemon1849805-21apt-get10:40:121
176489499363,8cyclictest1823507-21apt-get09:35:110
176489499363,8cyclictest1809464-21apt-get09:00:140
176489499363,8cyclictest1771486-21apt-get07:25:150
176489499362,8cyclictest1805557-21apt-get08:50:160
176489499361,8cyclictest1773433-21apt-get07:30:130
176489499353,8cyclictest1837642-40apt-check10:10:210
176489499352,9cyclictest1781334-21apt-get07:50:150
176489799342,15cyclictest1767576-21apt-get07:15:171
176489499342,9cyclictest1835217-21apt-get10:05:140
1764894993227,3cyclictest1812452-21ls09:05:230
179699310,3rtkit-daemon1795-21rtkit-daemon08:22:391
176489799312,9cyclictest1881411-21apt-get12:00:141
179699300,4rtkit-daemon1795-21rtkit-daemon09:47:351
176489799303,8cyclictest1765054-21apt-get07:10:161
1764897993027,2cyclictest0-21swapper/109:20:231
176489799292,8cyclictest1783684-21apt-get07:55:141
1764897992927,1cyclictest0-21swapper/110:10:191
176489799282,22cyclictest1775371-21apt-get07:35:111
1764894992814,9cyclictest1795803-21apt-get08:25:120
1764894992812,10cyclictest1871651-21apt-get11:35:160
176489499276,7cyclictest13-21ksoftirqd/008:56:400
18008912250,4sleep11799682-21/usr/sbin/munin08:35:271
179699250,15rtkit-daemon26-21ksoftirqd/111:28:051
176489799250,21cyclictest1883599-40apt-check12:05:091
176489499252,16cyclictest1841597-21apt-get10:20:140
1764897992422,1cyclictest18150irq/39-mmc010:25:061
176489799242,15cyclictest1813356-21apt-get09:10:141
176489499243,7cyclictest1821565-21apt-get09:30:140
176489499243,15cyclictest1803607-21apt-get08:45:140
176489499243,15cyclictest1779391-21apt-get07:45:150
1764894992412,7cyclictest13-21ksoftirqd/007:40:130
176489799239,9cyclictest1888890-21apt-get12:20:121
176489799239,12cyclictest348-21systemd-udevd07:25:181
176489799233,18cyclictest1831620-21tune2fs09:55:181
176489499232,15cyclictest1890839-21apt-get12:25:140
176489499232,14cyclictest1867756-21apt-get11:25:140
176489499232,14cyclictest1858010-21apt-get11:00:140
176489499232,14cyclictest1827422-21apt-get09:45:140
176489499232,14cyclictest1817677-21apt-get09:20:150
1764894992314,7cyclictest1890471-21seq12:23:240
1764894992311,7cyclictest1825477-21apt-get09:40:140
179699220,14rtkit-daemon0-21swapper/111:14:551
176489799229,11cyclictest26-21ksoftirqd/112:19:271
176489799223,17cyclictest1856466-21head10:55:241
176489799222,14cyclictest1873613-21apt-get11:40:151
176489799221,17cyclictest1805537-21/usr/sbin/munin08:50:171
176489799220,5cyclictest1880264-21pmu-power11:55:231
176489499222,15cyclictest1894730-21apt-get12:35:160
176489499222,15cyclictest1855635-21apt-get10:55:130
176489499222,14cyclictest1869703-21apt-get11:30:140
176489499222,14cyclictest1819623-21apt-get09:25:160
176489499222,13cyclictest1875558-21apt-get11:45:140
1764894992217,3cyclictest1815105-21turbostat09:15:010
1764894992216,4cyclictest66950irq/132-enp2s012:05:000
179699210,3rtkit-daemon1795-21rtkit-daemon09:34:081
176489799218,11cyclictest1871506-21latency_hist11:35:011
176489799212,17cyclictest1825382-21cat09:40:011
176489499214,10cyclictest1892787-21apt-get12:30:160
176489499214,10cyclictest1789539-21apt-get08:10:150
176489499213,12cyclictest1799700-21apt-get08:35:170
176489499213,11cyclictest1884421-21apt-get12:10:140
176489499213,11cyclictest1845486-21apt-get10:30:130
176489499212,14cyclictest1793449-21apt-get08:20:140
176489499212,13cyclictest1883140-21apt-get12:05:190
176489499212,13cyclictest1783664-21/usr/sbin/munin07:55:290
176489799209,9cyclictest1841805-21df_inode10:20:171
176489799203,15cyclictest1859760-21latency_hist11:05:011
176489799202,13cyclictest1811387-21/usr/sbin/munin09:05:271
1764897992016,2cyclictest1777713-21tune2fs07:40:161
1764897992015,3cyclictest1876083-21kernelversion11:45:201
1764897992015,3cyclictest1872196-21latency11:35:211
1764897992015,3cyclictest1864149-21tune2fs11:15:181
1764897992012,6cyclictest1847151-21seq10:34:201
176489799201,17cyclictest1885225-21ls12:10:231
1764897992011,7cyclictest1801979-21perl08:40:171
1764897992011,5cyclictest806-21in:imuxsock09:30:001
176489799200,3cyclictest1785900-21grep08:00:171
176489799200,18cyclictest1896502-21tr12:39:591
176489799200,18cyclictest1879302-21cat11:55:011
176489799200,18cyclictest1849664-21grep10:40:011
176489499202,13cyclictest1815298-21apt-get09:15:130
176489499202,13cyclictest1815298-21apt-get09:15:130
176489499202,11cyclictest1877501-21apt-get11:50:140
1764894992011,7cyclictest1873802-21ls11:40:160
176489799195,12cyclictest1840916-21vmstat10:15:251
176489799195,12cyclictest1840916-21vmstat10:15:251
176489799193,10cyclictest1797751-21apt-get08:30:131
176489799192,15cyclictest1853493-21latency_hist10:50:001
176489799192,15cyclictest1827226-21latency_hist09:45:001
176489799192,15cyclictest1788660-21find08:05:251
1764897991914,3cyclictest893-21snmpd11:20:211
176489799191,13cyclictest1795785-21/usr/sbin/munin08:25:261
176489799190,3cyclictest1893039-21grep12:30:191
176489799190,2cyclictest1892596-21perf12:30:011
176489799190,18cyclictest1811266-21wc09:05:011
176489499193,10cyclictest1785650-21apt-get08:00:150
1764894991914,3cyclictest1767324-21fschecks_time07:15:030
1764894991910,7cyclictest1766562-21seq07:12:410
179699180,6rtkit-daemon1769751-21df_inode07:20:171
176489799189,7cyclictest1804191-21sed08:45:201
1764897991815,2cyclictest1779699-21tune2fs07:45:191
1764897991814,2cyclictest1791463-21/usr/sbin/munin08:15:211
1764897991813,3cyclictest1773416-21acpi07:30:121
1764897991811,5cyclictest284-20systemd-journal09:00:001
1764897991810,6cyclictest1830703-21seq09:50:471
1764897991810,6cyclictest1782786-21seq07:52:041
176489799180,8cyclictest1833256-21/usr/sbin/munin10:00:161
176489799179,6cyclictest1853901-21diskstats10:50:151
1764897991712,3cyclictest1860074-21cpuspeed_turbos11:05:161
1764897991712,3cyclictest1789528-21acpi08:10:121
1764894991710,5cyclictest1799231-21seq08:32:200
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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