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2026-06-03 - 13:56
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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 Wed Jun 03, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17271362288225,47sleep00-21swapper/019:05:490
17272122261219,28sleep10-21swapper/119:06:391
179699620,3rtkit-daemon0-21swapper/023:33:191
179699620,3rtkit-daemon0-21swapper/023:33:191
179699590,7rtkit-daemon1795-21rtkit-daemon19:20:080
179699540,4rtkit-daemon1795-21rtkit-daemon22:42:271
179699530,4rtkit-daemon1795-21rtkit-daemon19:13:550
179699500,4rtkit-daemon1795-21rtkit-daemon00:13:580
18878762490,1chrt1887875-21/usr/sbin/munin23:45:241
179699440,5rtkit-daemon1771608-21diskmemload22:28:451
17993992430,2sleep00-21swapper/021:45:230
179699420,2rtkit-daemon1795-21rtkit-daemon23:27:271
179699410,8rtkit-daemon1867201-21ssh23:17:391
17890282410,5sleep10-21swapper/121:31:111
179699400,4rtkit-daemon1771608-21diskmemload21:54:590
179699400,3rtkit-daemon0-21swapper/019:52:190
172768899406,8cyclictest1744225-21latency_hist20:00:000
179699390,5rtkit-daemon1925486-21ssh00:38:540
172768899380,8cyclictest1911358-21latency_hist00:20:010
179699370,3rtkit-daemon0-21swapper/120:14:201
179699370,3rtkit-daemon0-21swapper/021:55:260
172768899372,13cyclictest1911652-21apt-get00:20:150
179699360,6rtkit-daemon1871953-21munin-run23:25:011
179699360,4rtkit-daemon1795-21rtkit-daemon23:34:210
179699360,4rtkit-daemon1795-21rtkit-daemon23:34:200
179699360,3rtkit-daemon0-21swapper/122:32:441
172768899363,10cyclictest1887879-21unixbench_multi23:45:250
172768899362,6cyclictest1880600-21/usr/sbin/munin23:35:220
179699350,5rtkit-daemon1874313-21sh23:27:120
179699350,4rtkit-daemon1795-21rtkit-daemon22:50:511
179699350,3rtkit-daemon0-21swapper/021:35:091
172768899353,8cyclictest1901772-21apt-get00:05:170
172768899353,8cyclictest1839257-21apt-get22:40:130
172768899353,11cyclictest1843871-21awk22:45:240
179699340,3rtkit-daemon0-21swapper/119:40:050
179699340,3rtkit-daemon0-21swapper/019:20:281
172768899345,8cyclictest1852773-21sh22:58:170
172768899342,7cyclictest1835682-21apt-get22:35:110
179699330,5rtkit-daemon1863023-21chrt23:11:241
179699330,4rtkit-daemon1795-21rtkit-daemon23:40:510
172768899335,8cyclictest1897363-40mandb00:00:010
172768899334,9cyclictest1771608-21diskmemload21:10:120
172768899334,9cyclictest1771608-21diskmemload21:10:110
172768899334,6cyclictest1890375-21apt-get23:50:130
172768899333,9cyclictest1826833-21ssh22:21:590
172768899333,9cyclictest1826833-21ssh22:21:590
172768899332,8cyclictest1786625-21cron21:29:590
172768899330,9cyclictest1791936-21ntp_offset21:35:210
172768899330,8cyclictest13-21ksoftirqd/020:25:010
172768899330,7cyclictest1916420-21ssh00:25:240
179699320,4rtkit-daemon1795-21rtkit-daemon21:16:570
179699320,4rtkit-daemon1795-21rtkit-daemon20:29:480
179699320,3rtkit-daemon1795-21rtkit-daemon23:21:130
179699320,3rtkit-daemon0-21swapper/120:51:020
179699320,3rtkit-daemon0-21swapper/120:48:340
179699320,3rtkit-daemon0-21swapper/022:00:061
179699320,3rtkit-daemon0-21swapper/021:10:331
179699320,3rtkit-daemon0-21swapper/021:10:321
179699320,3rtkit-daemon0-21swapper/019:47:491
172768899326,6cyclictest1786674-21python321:30:040
172768899325,9cyclictest1814042-21ntpq22:05:220
172768899322,7cyclictest1864805-21apt-get23:15:130
1727688993225,5cyclictest1780926-21tail21:20:260
172768899321,11cyclictest1771608-21diskmemload23:05:140
179699310,3rtkit-daemon0-21swapper/122:19:420
179699310,3rtkit-daemon0-21swapper/120:15:030
179699310,3rtkit-daemon0-21swapper/119:28:300
179699310,3rtkit-daemon0-21swapper/100:03:150
179699310,3rtkit-daemon0-21swapper/021:16:251
172768899316,9cyclictest1760449-21grep20:40:180
172768899315,7cyclictest1771608-21diskmemload22:30:120
172768899315,7cyclictest1771608-21diskmemload22:00:190
172768899312,6cyclictest13-21ksoftirqd/000:30:240
172768899311,7cyclictest1861230-21apt-get23:10:120
172768899310,8cyclictest13-21ksoftirqd/021:10:000
179699300,4rtkit-daemon1823210-21ssh22:17:231
179699300,3rtkit-daemon0-21swapper/122:51:060
179699300,3rtkit-daemon0-21swapper/020:40:041
179699300,3rtkit-daemon0-21swapper/020:31:341
179699300,3rtkit-daemon0-21swapper/019:11:141
172768899304,7cyclictest1771608-21diskmemload23:05:010
172768899304,7cyclictest1771608-21diskmemload22:10:130
172768899300,7cyclictest1746407-21apt-get20:05:170
179699290,4rtkit-daemon1795-21rtkit-daemon19:36:180
179699290,3rtkit-daemon0-21swapper/121:03:060
179699290,3rtkit-daemon0-21swapper/120:04:410
1727692992922,5cyclictest1882145-21ssh23:38:211
172768899292,10cyclictest1735101-21grep19:30:190
179699280,4rtkit-daemon1795-21rtkit-daemon22:10:001
179699280,4rtkit-daemon1795-21rtkit-daemon20:27:331
179699280,3rtkit-daemon0-21swapper/120:56:420
179699280,3rtkit-daemon0-21swapper/120:10:270
179699280,3rtkit-daemon0-21swapper/023:04:011
179699280,3rtkit-daemon0-21swapper/021:56:151
179699280,3rtkit-daemon0-21swapper/021:51:321
172768899287,5cyclictest13-21ksoftirqd/022:29:020
172768899286,7cyclictest13-21ksoftirqd/019:45:230
172768899280,9cyclictest1797235-21ssh21:43:030
172768899280,8cyclictest1756447-21grep20:30:180
179699270,3rtkit-daemon0-21swapper/020:35:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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