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2026-04-04 - 10:57
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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 Sat Apr 04, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17832952259182,62sleep00-21swapper/019:07:330
17832802258190,53sleep10-21swapper/119:07:241
19667972950,1chrt96-21kswapd000:20:170
179699700,4rtkit-daemon1795-21rtkit-daemon22:43:501
179699680,4rtkit-daemon1795-21rtkit-daemon21:52:261
179699610,20rtkit-daemon1783653-21cyclictest19:55:071
179699600,4rtkit-daemon1795-21rtkit-daemon21:54:190
179699540,3rtkit-daemon1795-21rtkit-daemon23:34:561
19754222500,5sleep10-21swapper/100:31:151
19370622500,1sleep10-21swapper/123:37:071
179699500,4rtkit-daemon1795-21rtkit-daemon19:21:211
19749302490,4sleep00-21swapper/000:30:240
179699480,4rtkit-daemon1795-21rtkit-daemon22:46:430
179699460,3rtkit-daemon1795-21rtkit-daemon20:51:510
178366299463,9cyclictest1821513-21apt-get20:45:131
178366299452,13cyclictest1790235-21apt-get19:25:121
18154752440,4chrt0-21swapper/120:30:011
178366299423,8cyclictest1819567-21apt-get20:40:121
178366299423,10cyclictest1811746-21apt-get20:20:131
178366299422,9cyclictest1910759-21apt-get23:00:141
18964682400,3sleep10-21swapper/122:39:581
178365799408,8cyclictest1827886-21apt-get21:00:250
179699390,3rtkit-daemon0-21swapper/122:55:101
178366299394,10cyclictest1803926-21apt-get20:00:121
178366299392,14cyclictest1879064-21apt-get22:15:141
178366299372,9cyclictest1825411-21apt-get20:55:121
179699360,3rtkit-daemon0-21swapper/121:47:291
179699360,3rtkit-daemon0-21swapper/120:18:571
179699360,3rtkit-daemon0-21swapper/119:25:060
179699350,3rtkit-daemon0-21swapper/120:33:170
179699350,3rtkit-daemon0-21swapper/119:15:271
179699350,3rtkit-daemon0-21swapper/022:48:431
178366299353,9cyclictest1835645-21apt-get21:15:151
178366299352,10cyclictest1792188-21apt-get19:30:121
178366299351,8cyclictest1966718-40apt-check00:20:181
178365799356,9cyclictest1876954-21sh22:11:030
178365799355,7cyclictest13-21ksoftirqd/022:30:110
178365799355,6cyclictest13-21ksoftirqd/000:10:120
178365799354,7cyclictest13-21ksoftirqd/000:35:130
178365799352,7cyclictest13-21ksoftirqd/020:30:000
179699340,4rtkit-daemon1871043-21ssh22:04:041
179699340,3rtkit-daemon0-21swapper/119:35:500
179699340,3rtkit-daemon0-21swapper/019:42:391
178366299343,9cyclictest1794138-21apt-get19:35:101
178365799345,8cyclictest1846816-21apt-get21:30:130
178365799345,6cyclictest1893235-21apt-get22:35:120
179699330,4rtkit-daemon1795-21rtkit-daemon23:15:210
179699330,4rtkit-daemon1795-21rtkit-daemon22:53:030
179699330,4rtkit-daemon0-21swapper/123:52:280
179699330,3rtkit-daemon0-21swapper/123:00:590
178365799332,8cyclictest1962629-21apt-get00:15:120
1783657993324,7cyclictest1945560-21sed23:50:010
179699320,4rtkit-daemon1795-21rtkit-daemon23:23:560
179699320,3rtkit-daemon0-21swapper/121:35:230
179699320,3rtkit-daemon0-21swapper/119:55:130
179699320,3rtkit-daemon0-21swapper/023:25:051
179699320,3rtkit-daemon0-21swapper/023:14:301
179699320,3rtkit-daemon0-21swapper/020:54:521
178365799329,8cyclictest13-21ksoftirqd/023:15:000
178365799325,7cyclictest13-21ksoftirqd/023:40:140
178365799325,7cyclictest13-21ksoftirqd/021:55:110
1783657993211,7cyclictest13-21ksoftirqd/000:00:230
179699310,3rtkit-daemon0-21swapper/120:35:590
179699310,3rtkit-daemon0-21swapper/000:09:231
1783662993128,2cyclictest18150irq/39-mmc021:05:051
178365799318,8cyclictest13-21ksoftirqd/021:20:010
178365799318,8cyclictest13-21ksoftirqd/020:14:590
178365799317,8cyclictest13-21ksoftirqd/021:25:240
178365799316,8cyclictest13-21ksoftirqd/021:00:010
178365799313,8cyclictest1834822-21ssh21:13:500
178365799312,7cyclictest13-21ksoftirqd/023:05:120
179699300,3rtkit-daemon1795-21rtkit-daemon00:35:171
179699300,3rtkit-daemon1795-21rtkit-daemon00:29:291
179699300,3rtkit-daemon0-21swapper/023:19:081
179699300,3rtkit-daemon0-21swapper/000:14:221
179699300,2rtkit-daemon1795-21rtkit-daemon20:40:520
1783662993025,3cyclictest1853816-21ls21:40:001
1783662993014,9cyclictest1886262-21apt-get22:25:131
178365799303,8cyclictest1929518-21sh23:25:470
178365799303,7cyclictest13-21ksoftirqd/022:27:150
179699290,4rtkit-daemon1795-21rtkit-daemon19:46:180
179699290,3rtkit-daemon0-21swapper/119:54:030
179699290,3rtkit-daemon0-21swapper/119:21:140
179699290,3rtkit-daemon0-21swapper/022:12:051
178365799297,8cyclictest13-21ksoftirqd/000:05:240
178365799295,9cyclictest13-21ksoftirqd/021:05:230
178365799294,6cyclictest1885256-21ssh22:23:210
178365799292,7cyclictest13-21ksoftirqd/022:09:280
178365799290,8cyclictest1868124-21apt-get22:00:120
178365799290,7cyclictest1880131-21mailstats22:15:220
178365799290,11cyclictest1935223-21seq23:35:120
178366299283,18cyclictest1945921-21apt-get23:50:131
1783662992825,2cyclictest66950irq/132-enp2s022:50:531
1783662992825,2cyclictest1827236-21kworker/u8:221:00:231
1783662992825,2cyclictest18150irq/39-mmc020:39:551
178365799281,7cyclictest1933174-21seq23:30:540
178365799280,10cyclictest1785802-21perl19:15:020
179699270,3rtkit-daemon0-21swapper/120:25:000
179699270,3rtkit-daemon0-21swapper/120:17:010
179699270,3rtkit-daemon0-21swapper/119:34:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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