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2026-04-10 - 17:05
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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 Fri Apr 10, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21445032267188,40sleep10-21swapper/107:06:401
21453612264189,43sleep00-21swapper/007:09:490
22044962710,4chrt2204462-21https09:25:021
22051172660,3sleep02204190-21apt-get09:25:270
179699650,4rtkit-daemon1795-21rtkit-daemon12:20:381
2145490996012,10cyclictest2299632-21python311:40:010
22375232590,5chrt0-21swapper/010:10:140
2145490995612,11cyclictest2211977-21python309:35:010
2145490995514,21cyclictest2265029-21apt-get10:50:140
2145490995512,11cyclictest2229844-21munin-run10:00:010
2145490995411,14cyclictest2244038-21cat10:20:010
2145490995411,11cyclictest2328111-21systemctl12:20:000
2145490995310,13cyclictest2166054-21sendmail08:00:000
2145490995310,12cyclictest2283580-21grep11:15:230
214549099529,11cyclictest2324509-21latency_hist12:15:010
2145490995211,9cyclictest2193445-21grep09:10:010
2145490995211,12cyclictest2200852-21systemd-run09:20:010
2145490995210,10cyclictest2307240-21latency_hist11:50:010
179699520,4rtkit-daemon1795-21rtkit-daemon11:56:520
179699520,4rtkit-daemon1795-21rtkit-daemon11:13:571
179699520,4rtkit-daemon1795-21rtkit-daemon09:15:031
214549099519,11cyclictest2296226-21latency_hist11:35:000
214549099519,11cyclictest2237023-21latency_hist10:09:590
2145490995114,10cyclictest2275321-21ls11:05:010
179699510,4rtkit-daemon1795-21rtkit-daemon08:40:590
179699510,3rtkit-daemon1795-21rtkit-daemon11:43:260
214549099509,11cyclictest2308458-21tr11:50:230
2145490995013,11cyclictest2193436-21diskmemload10:45:170
2145490995012,12cyclictest2269613-21grep10:55:240
2145490995011,9cyclictest2321122-21cat12:10:010
2145490995010,13cyclictest2169984-21sh08:10:010
2145490995010,10cyclictest2342111-21cut12:40:000
2145490995010,10cyclictest2197279-21date09:15:010
179699500,1rtkit-daemon1795-21rtkit-daemon09:10:151
214549099499,11cyclictest2317763-21latency_hist12:05:000
214549099499,11cyclictest2285905-21latency_hist11:20:010
214549099499,10cyclictest2282450-21latency_hist11:15:010
214549099499,10cyclictest2181681-21latency_hist08:40:010
2145490994916,8cyclictest2153482-21mailstats07:25:240
2145490994911,12cyclictest2151529-21grep07:20:300
2145490994910,11cyclictest2290474-21ssh11:25:240
2145490994910,11cyclictest2213648-21mailstats09:35:220
2145490994910,10cyclictest2147506-21wc07:15:000
214549099489,9cyclictest2179836-21sed08:35:010
2145490994816,14cyclictest2251182-21ssh10:30:100
2145490994812,13cyclictest2275997-21/usr/sbin/munin11:05:200
2145490994811,9cyclictest0-21swapper/009:50:010
2145490994811,12cyclictest2257962-21cron10:40:010
2145490994810,11cyclictest2258131-21latency_hist10:40:020
2145490994810,10cyclictest2331800-21date12:25:010
2145490994810,10cyclictest2173992-21date08:20:000
179699480,3rtkit-daemon1795-21rtkit-daemon09:52:030
214549099479,9cyclictest2338626-21wc12:35:000
214549099479,11cyclictest2247782-21apt-get10:25:130
2145490994713,12cyclictest2147570-21munin-node07:15:010
2145490994713,10cyclictest2193436-21diskmemload12:25:240
2145490994710,9cyclictest2175987-21date08:25:000
2145490994710,9cyclictest2175987-21date08:25:000
179699470,4rtkit-daemon1795-21rtkit-daemon07:27:591
214549099469,9cyclictest2187638-21latency_hist08:55:000
2145490994615,12cyclictest2158922-21cat07:40:180
2145490994611,13cyclictest2177285-21awk08:25:260
2145490994610,11cyclictest2244552-21grep10:20:160
2145490994610,10cyclictest2168098-21wc08:05:010
22261342450,1sleep10-21swapper/109:54:121
2145490994511,9cyclictest1-21systemd07:40:010
2145490994511,13cyclictest2184591-21ntpq08:45:200
2145490994510,9cyclictest2191626-21sed09:05:010
2145490994510,17cyclictest2154835-21grep07:30:150
2145490994510,13cyclictest2163210-21ps07:50:230
2145490994510,11cyclictest2171985-21latency_hist08:15:010
2145490994510,11cyclictest2162224-21latency_hist07:50:000
179699450,3rtkit-daemon0-21swapper/010:56:421
22212632440,3sleep10-21swapper/109:46:141
214549099449,11cyclictest2189680-21date09:00:010
2145490994411,12cyclictest2217307-21unixbench-2d09:40:230
2145490994410,13cyclictest2231396-21awk10:00:250
2145490994311,10cyclictest2202138-21sensors09:20:220
179699380,3rtkit-daemon1795-21rtkit-daemon08:14:091
179699370,3rtkit-daemon0-21swapper/009:34:231
179699340,4rtkit-daemon1795-21rtkit-daemon12:06:591
179699340,4rtkit-daemon1795-21rtkit-daemon11:16:511
179699340,3rtkit-daemon0-21swapper/012:27:291
179699340,3rtkit-daemon0-21swapper/010:54:111
179699340,3rtkit-daemon0-21swapper/010:12:111
179699340,3rtkit-daemon0-21swapper/008:28:161
179699340,3rtkit-daemon0-21swapper/007:47:561
214549599331,26cyclictest2204416-21kworker/u8:309:35:131
179699330,5rtkit-daemon2173172-21cat08:15:251
179699330,4rtkit-daemon2165062-21ntp_states07:55:211
179699330,4rtkit-daemon1795-21rtkit-daemon12:12:001
179699330,4rtkit-daemon1795-21rtkit-daemon12:03:171
179699330,4rtkit-daemon1795-21rtkit-daemon11:23:471
179699330,3rtkit-daemon0-21swapper/008:22:091
179699330,3rtkit-daemon0-21swapper/008:22:091
179699320,4rtkit-daemon1795-21rtkit-daemon12:19:071
179699320,4rtkit-daemon1795-21rtkit-daemon07:50:041
179699320,3rtkit-daemon0-21swapper/011:43:341
179699320,3rtkit-daemon0-21swapper/010:28:321
179699320,3rtkit-daemon0-21swapper/008:53:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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