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2026-04-13 - 05:49
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Mon Apr 13, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18841182270190,28sleep10-21swapper/119:08:131
18839262253190,49sleep00-21swapper/019:06:100
188442699582,33cyclictest2031464-21apt-get23:30:140
188442699571,36cyclictest1992841-21apt-get22:35:110
179699570,6rtkit-daemon1795-21rtkit-daemon00:35:190
188442699552,34cyclictest1964533-21apt-get21:55:130
188442699551,36cyclictest1996069-21apt-get22:40:060
188442699537,22cyclictest1975621-21cat22:10:180
188442699532,32cyclictest2073059-21apt-get00:30:140
188442699530,31cyclictest1946703-21seq21:30:020
179699530,4rtkit-daemon1795-21rtkit-daemon00:05:540
179699530,12rtkit-daemon1795-21rtkit-daemon20:47:170
19698912520,3sleep00-21swapper/022:01:580
188442699522,33cyclictest1985908-21/usr/sbin/munin22:25:260
188442699521,34cyclictest1989349-21apt-get22:30:150
188442699512,31cyclictest2024437-21apt-get23:20:130
1884426995112,27cyclictest2045076-21sh23:48:360
179699510,4rtkit-daemon1795-21rtkit-daemon21:49:140
188442699501,32cyclictest1936248-21apt-get21:15:150
188442699500,33cyclictest1887075-21apt-get19:15:120
179699500,4rtkit-daemon1795-21rtkit-daemon19:13:390
179699500,3rtkit-daemon1795-21rtkit-daemon23:58:350
188442699491,33cyclictest1932285-21diskmemload21:23:530
188442699491,32cyclictest2045913-21apt-get23:50:140
179699490,4rtkit-daemon1795-21rtkit-daemon19:48:570
188442699481,34cyclictest1944821-21ssh21:25:520
188442699481,29cyclictest1912284-21apt-get20:20:060
1884426994810,26cyclictest2019912-21sh23:13:040
188442699480,33cyclictest2000253-21apt-get22:45:130
188442699480,32cyclictest1954026-21apt-get21:40:130
188442699480,32cyclictest1904689-21apt-get20:00:130
188442699480,32cyclictest1902717-21apt-get19:55:140
188442699480,31cyclictest1906634-21apt-get20:05:120
188442699480,24cyclictest1981964-21apt-get22:20:130
179699480,4rtkit-daemon1795-21rtkit-daemon00:02:480
188442699471,34cyclictest1972877-21sh22:05:280
188442699471,30cyclictest2069689-21apt-get00:25:140
188442699471,30cyclictest1920741-21apt-get20:40:130
188442699471,30cyclictest1920741-21apt-get20:40:120
188442699471,29cyclictest1978461-21apt-get22:15:130
188442699471,23cyclictest2010602-21apt-get23:00:140
1884426994711,20cyclictest2064661-21sh00:17:090
188442699470,31cyclictest1932285-21diskmemload23:26:030
188442699470,30cyclictest2003563-21apt-get22:50:150
188442699470,30cyclictest1930527-21apt-get21:05:120
188442699470,30cyclictest1928579-21apt-get21:00:140
179699470,14rtkit-daemon2008806-21seq22:56:141
188442699468,26cyclictest2041127-21sh23:43:590
188442699468,23cyclictest2037140-21seq23:37:440
188442699460,34cyclictest1925439-21awk20:50:230
188442699460,31cyclictest1950518-21apt-get21:35:130
188442699460,30cyclictest2021033-21apt-get23:15:150
188442699460,30cyclictest1889047-21apt-get19:20:110
188442699460,29cyclictest2059356-21apt-get00:10:130
188442699460,23cyclictest2007903-21ntpq22:55:210
188442699451,31cyclictest1919369-21memory20:35:190
188442699451,25cyclictest1962240-21/usr/sbin/munin21:50:250
188442699450,29cyclictest2066180-21apt-get00:20:140
188442699450,25cyclictest1935419-21sh21:13:480
188442699441,26cyclictest1915431-21sed20:25:180
188442699440,31cyclictest1901372-21memory19:50:220
188442699440,30cyclictest1890997-21apt-get19:25:120
188442699440,28cyclictest1908588-21apt-get20:10:130
188442699440,28cyclictest1896249-21seq19:35:540
188442699430,27cyclictest1918294-21seq20:32:140
188442699430,27cyclictest1893041-21grep19:30:140
188442699430,26cyclictest2016386-21taskset23:08:020
188442699420,26cyclictest1896870-21apt-get19:40:100
188442699420,25cyclictest1926659-21grep20:55:150
188442699412,30cyclictest1910534-21apt-get20:15:130
179699390,3rtkit-daemon0-21swapper/021:13:381
179699370,5rtkit-daemon893-21snmpd19:10:141
179699370,3rtkit-daemon0-21swapper/122:13:301
179699360,3rtkit-daemon0-21swapper/022:20:521
179699350,3rtkit-daemon0-21swapper/123:06:391
179699350,3rtkit-daemon0-21swapper/119:25:011
1884431993428,4cyclictest1929851-21head21:00:241
179699330,3rtkit-daemon0-21swapper/123:12:501
179699330,3rtkit-daemon0-21swapper/121:27:391
179699330,3rtkit-daemon0-21swapper/023:02:521
179699330,3rtkit-daemon0-21swapper/022:05:461
179699330,3rtkit-daemon0-21swapper/022:01:291
179699330,3rtkit-daemon0-21swapper/020:40:101
179699330,3rtkit-daemon0-21swapper/020:40:101
179699330,3rtkit-daemon0-21swapper/020:08:251
179699320,3rtkit-daemon0-21swapper/022:53:281
179699320,3rtkit-daemon0-21swapper/022:49:211
179699320,3rtkit-daemon0-21swapper/019:50:571
179699320,3rtkit-daemon0-21swapper/000:03:411
179699310,4rtkit-daemon1795-21rtkit-daemon21:18:331
179699310,4rtkit-daemon0-21swapper/021:44:131
179699310,3rtkit-daemon1795-21rtkit-daemon23:25:281
179699310,3rtkit-daemon0-21swapper/021:34:181
179699310,3rtkit-daemon0-21swapper/020:55:391
179699310,3rtkit-daemon0-21swapper/020:37:511
179699310,3rtkit-daemon0-21swapper/020:25:171
179699300,3rtkit-daemon0-21swapper/023:36:241
179699300,3rtkit-daemon0-21swapper/019:59:211
1884431992925,2cyclictest0-21swapper/120:10:481
179699290,3rtkit-daemon0-21swapper/023:48:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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