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2026-04-26 - 04:08
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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 rackdslot0.osadl.org (updated Sun Apr 26, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1287399252,22cyclictest10325-21cut22:55:001
1287399250,24cyclictest843-21systemd-network19:59:511
1287399250,1cyclictest0-21swapper/120:20:201
1287399240,16cyclictest22564-21turbostat00:15:001
1287499230,5cyclictest0-21swapper/222:05:152
1287399234,18cyclictest0-21swapper/121:28:521
1287399231,21cyclictest68672chrt22:47:291
1287399231,21cyclictest319492sleep123:31:261
1287399231,21cyclictest17704-21ntp_kernel_pll_21:10:191
1287399230,3cyclictest21000-21munin-run19:25:001
1287399230,2cyclictest21394-21awk22:15:161
1287399230,2cyclictest19216-21sed22:10:221
1287399230,2cyclictest10635-21grep23:50:211
1287399230,1cyclictest0-21swapper/123:45:211
1287399230,1cyclictest0-21swapper/120:39:001
1287399230,1cyclictest0-21swapper/119:44:481
1287399221,6cyclictest0-21swapper/121:45:141
1287399221,20cyclictest18368-21nfsd420:15:181
1287399221,20cyclictest18368-21nfsd420:15:181
1287399220,3cyclictest13426-21grep23:00:151
1287399220,2cyclictest32503-21awk20:40:181
1287399220,2cyclictest19519-21expr23:10:131
1287399220,2cyclictest14593-21grep00:00:141
1287399220,2cyclictest13755-21expr21:05:131
1287399220,21cyclictest23676-21date22:20:161
1287399220,21cyclictest0-21swapper/121:40:121
1287399220,21cyclictest0-21swapper/121:00:231
1287399220,20cyclictest0-21swapper/100:09:011
1287399220,1cyclictest455-21plymouthd00:25:211
1287399220,1cyclictest0-21swapper/123:05:191
1287399220,1cyclictest0-21swapper/122:25:161
1287399220,1cyclictest0-21swapper/120:30:141
1287399220,1cyclictest0-21swapper/120:00:131
1287399220,1cyclictest0-21swapper/119:35:151
1287399220,1cyclictest0-21swapper/119:25:161
1287399220,16cyclictest7644-21grep21:50:191
1287399220,15cyclictest0-21swapper/123:35:201
1287299225,16cyclictest1856-21systemd-udevd21:08:520
1287299220,18cyclictest0-21swapper/023:29:440
12873992114,6cyclictest29323-21chrt23:27:411
12873992113,4cyclictest680-21fschecks_count19:45:151
1287399211,19cyclictest126952chrt22:57:061
1287399211,19cyclictest0-21swapper/121:30:181
1287399210,2cyclictest4278-21sessionclean00:39:001
1287399210,2cyclictest16264-21cat19:15:161
1287399210,20cyclictest3979-21H222:10:211
1287399210,20cyclictest0-21swapper/120:59:551
1287399210,20cyclictest0-21swapper/120:45:151
1287399210,1cyclictest0-21swapper/123:15:211
1287399210,1cyclictest0-21swapper/122:40:441
1287399210,1cyclictest0-21swapper/122:35:211
1287399210,1cyclictest0-21swapper/122:00:181
1287399210,1cyclictest0-21swapper/121:20:181
1287399210,1cyclictest0-21swapper/100:35:001
1287399210,19cyclictest0-21swapper/121:55:001
1287399210,16cyclictest4256-21fschecks_time23:40:151
1287399210,16cyclictest24625-21chrt20:27:221
1287399210,16cyclictest12964-21pzem_power20:05:211
1287399210,15cyclictest5860-21latency_hist19:55:011
1287399210,15cyclictest0-21swapper/123:55:201
1287399210,15cyclictest0-21swapper/122:30:141
1287399210,15cyclictest0-21swapper/121:35:171
1287399210,14cyclictest0-21swapper/122:05:141
12872992118,2cyclictest7067-21latency_hist22:50:000
1287299210,20cyclictest843-21systemd-network23:45:500
12873992013,6cyclictest24482-21cat19:30:141
12873992013,6cyclictest0-21swapper/120:50:171
1287399200,1cyclictest0-21swapper/123:20:181
1287399200,1cyclictest0-21swapper/123:20:171
1287399200,1cyclictest0-21swapper/119:10:131
1287399200,19cyclictest0-21swapper/121:15:191
1287399200,19cyclictest0-21swapper/100:21:291
1287299204,15cyclictest0-21swapper/020:38:290
1287499192,16cyclictest455-21plymouthd22:55:142
1287499190,3cyclictest0-21swapper/219:25:352
1287499190,16cyclictest3991-21H222:10:212
12873991913,5cyclictest0-21swapper/120:10:151
12872991917,1cyclictest0-21swapper/020:19:560
12872991917,1cyclictest0-21swapper/020:19:550
12874991816,1cyclictest936-21sessionclean22:38:592
12874991816,1cyclictest20388-21expr00:10:132
12874991816,1cyclictest0-21swapper/223:49:422
12874991815,2cyclictest14653-21ps19:10:202
12874991815,2cyclictest10008-21seq22:52:402
12874991814,2cyclictest0-21swapper/222:15:122
1287499180,2cyclictest20011-21sort00:10:002
1287499180,17cyclictest0-21swapper/223:25:212
1287499180,16cyclictest0-21swapper/221:44:222
1287299182,15cyclictest9-21ksoftirqd/021:57:370
12872991816,1cyclictest0-21swapper/019:26:370
12872991815,2cyclictest16074-21tr19:15:150
1287299180,3cyclictest426-21systemd-udevd21:12:510
1287299180,18cyclictest0-21swapper/019:44:560
1287299180,17cyclictest426-21systemd-udevd00:02:510
12874991714,2cyclictest3991-21H222:10:212
12874991714,2cyclictest3989-21H222:10:212
12874991714,2cyclictest3698-21timerwakeupswit00:35:232
12874991714,2cyclictest3428-21/usr/sbin/munin21:45:222
12874991714,2cyclictest32495-21nfsd420:40:172
12874991714,2cyclictest29094-21cat21:30:242
12874991714,2cyclictest25058-21expr21:25:142
12874991714,2cyclictest22272-21ls21:20:142
12874991714,2cyclictest19816-21cpu20:20:142
12874991714,2cyclictest16617-21expr23:05:152
12874991714,2cyclictest13465-21switchtime22:00:232
12874991714,2cyclictest0-21swapper/200:20:172
12874991712,4cyclictest870-21systemd-logind20:16:522
12874991712,4cyclictest870-21systemd-logind20:16:522
12874991710,4cyclictest5847-21fschecks_count20:50:152
1287499170,2cyclictest9696-21tune2fs23:50:142
1287499170,2cyclictest9075-21apache_accesses21:55:102
1287499170,2cyclictest7822-21processes21:50:202
1287499170,2cyclictest32579-21nvmesmart_nvme000:30:192
1287499170,2cyclictest14336-21munin-plugin-st00:00:002
1287499170,16cyclictest6163-21nvmesmart_nvme022:45:192
1287499170,16cyclictest5145-21tr23:40:202
1287499170,16cyclictest3577-21grep20:45:192
1287499170,16cyclictest30920-21head19:40:172
1287499170,16cyclictest3053-21systemd-logind23:02:522
1287499170,16cyclictest29959-21sed00:25:182
1287499170,16cyclictest25100-21proxymap22:25:012
1287499170,16cyclictest24670-21cat19:30:152
1287499170,16cyclictest23065-21expr22:20:152
1287499170,16cyclictest21699-21/usr/sbin/munin23:15:202
1287499170,16cyclictest2069-21systemd-udevd19:48:522
1287499170,16cyclictest20068-21latency21:15:182
1287499170,16cyclictest19209-21expr19:20:142
1287499170,16cyclictest17442-21/usr/sbin/munin22:10:142
1287499170,16cyclictest12336-21kernelversion20:05:192
1287499170,15cyclictest3983-21H222:10:212
12872991715,1cyclictest0-21swapper/021:25:130
12872991714,2cyclictest843-21systemd-network21:21:120
12872991714,2cyclictest7873-21/usr/sbin/munin22:50:180
12872991714,2cyclictest6852-21awk20:50:210
12872991714,2cyclictest4072-21switchtime20:45:230
12872991714,2cyclictest3987-21H222:10:210
12872991714,2cyclictest3450-21gsd-color22:05:000
12872991714,2cyclictest30702-21perf22:35:010
12872991714,2cyclictest27694-21sshd22:26:320
12872991714,2cyclictest25042-21sh00:17:000
12872991714,2cyclictest22276-21sshd00:11:310
12872991714,2cyclictest22099-21cron20:25:010
12872991714,2cyclictest20971-21chrt23:10:420
12872991714,2cyclictest14496-21snapd20:07:360
12872991714,2cyclictest1336-21/usr/sbin/munin19:45:180
12872991714,2cyclictest12564-21timerwakeupswit21:00:220
12872991714,2cyclictest12111-21expr23:55:140
12872991714,2cyclictest0-21swapper/023:40:180
1287299171,15cyclictest3976-21H222:10:210
1287299171,15cyclictest0-21swapper/019:35:160
1287299170,2cyclictest7513-21systemctl19:55:190
1287299170,2cyclictest3053-21systemd-logind23:38:520
1287299170,2cyclictest1337-21python320:45:000
1287299170,2cyclictest1229-21munin-plugin-st22:40:000
1287299170,2cyclictest0-21swapper/020:05:020
1287299170,1cyclictest0-21swapper/022:15:180
1287299170,16cyclictest3174-21awk22:40:180
1287299170,16cyclictest25364-21nfsd419:30:180
1287299170,16cyclictest23038-21awk23:15:170
1287299170,16cyclictest14495-21snapd23:07:560
1287299170,16cyclictest10326-21sed21:00:000
1287299170,16cyclictest0-21swapper/019:20:100
1287299170,15cyclictest3983-21H222:10:210
12874991613,2cyclictest23162-21cut00:15:132
1287499161,1cyclictest28-21ksoftirqd/222:30:152
1287499160,1cyclictest8887-21latency20:55:182
1287499160,1cyclictest0-21swapper/223:20:102
1287499160,1cyclictest0-21swapper/223:20:102
1287499160,1cyclictest0-21swapper/221:00:122
1287499160,15cyclictest3981-21H222:10:212
1287499160,15cyclictest29952-21/usr/sbin/munin21:35:112
1287499160,15cyclictest28389-21apache_volume20:35:122
1287499160,15cyclictest22537-21dpkg20:25:122
1287499160,15cyclictest16897-21expr21:10:152
1287499160,15cyclictest14516-21apache_accesses00:00:132
1287499160,15cyclictest0-21swapper/223:35:132
1287499160,15cyclictest0-21swapper/223:30:182
1287499160,15cyclictest0-21swapper/222:40:182
1287499160,15cyclictest0-21swapper/221:05:142
1287499160,15cyclictest0-21swapper/220:10:132
1287499160,15cyclictest0-21swapper/219:35:172
12872991614,1cyclictest3450-21gsd-color23:00:130
12872991614,1cyclictest26462-21sed00:20:160
12872991614,1cyclictest0-21swapper/023:50:210
12872991614,1cyclictest0-21swapper/023:30:150
12872991614,1cyclictest0-21swapper/022:05:190
12872991614,1cyclictest0-21swapper/021:50:200
12872991614,1cyclictest0-21swapper/021:35:000
12872991614,1cyclictest0-21swapper/020:20:130
12872991614,1cyclictest0-21swapper/019:10:180
12872991614,1cyclictest0-21swapper/000:05:150
1287299160,2cyclictest24457-21acpi23:20:110
1287299160,2cyclictest24457-21acpi23:20:100
1287299160,1cyclictest0-21swapper/000:35:170
1287299160,15cyclictest28542-21cpuspeed_turbos00:25:120
1287299160,15cyclictest24124-21grep22:20:180
1287299160,15cyclictest0-21swapper/022:55:190
1287299160,15cyclictest0-21swapper/022:10:210
1287299160,15cyclictest0-21swapper/021:45:130
1287299160,15cyclictest0-21swapper/021:35:100
1287299160,15cyclictest0-21swapper/020:30:150
1287299160,15cyclictest0-21swapper/020:10:200
1287299150,1cyclictest0-21swapper/021:40:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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