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2025-12-16 - 12:27
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Tue Dec 16, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2344499263,5cyclictest16686-21cut19:55:000
2344699220,21cyclictest843-21systemd-network20:31:442
23445992117,3cyclictest0-21swapper/100:02:571
23444992114,6cyclictest0-21swapper/022:05:010
23444992114,6cyclictest0-21swapper/022:05:000
23446992014,3cyclictest0-21swapper/220:38:442
2344599204,14cyclictest0-21swapper/123:07:531
2344499203,11cyclictest30660-21logrotate00:09:280
2344699192,3cyclictest0-21swapper/200:16:442
2344699192,13cyclictest16668-21/usr/sbin/munin19:55:012
23446991917,1cyclictest16008-21cpuspeed_turbos22:47:122
23446991916,2cyclictest3989-21H222:02:192
2344699190,16cyclictest0-21swapper/222:30:162
23445991916,2cyclictest3987-21H222:02:191
2344599190,3cyclictest0-21swapper/119:26:021
2344499193,15cyclictest3976-21H222:02:190
2344499192,16cyclictest0-21swapper/023:58:560
23444991917,1cyclictest0-21swapper/021:49:300
23444991915,1cyclictest0-21swapper/021:00:520
2344499190,2cyclictest3979-21H222:02:190
2344499190,16cyclictest3985-21H222:02:190
23446991816,1cyclictest28-21ksoftirqd/221:50:002
23446991816,1cyclictest0-21swapper/223:00:512
23446991815,2cyclictest12683-21latency19:47:152
23446991814,3cyclictest4035-21H222:02:192
2344699180,3cyclictest4035-21H222:02:192
2344699180,2cyclictest4443-21latency_hist20:30:022
2344699180,17cyclictest4099-21H222:02:192
2344699180,17cyclictest1304-21grep23:17:152
2344599182,1cyclictest20901-21basename23:52:151
2344599182,15cyclictest21-21ksoftirqd/122:56:551
2344599182,15cyclictest191382chrt21:54:301
23445991816,1cyclictest0-21swapper/121:03:551
23445991814,3cyclictest0-21swapper/100:15:061
2344599181,2cyclictest31605-21cstates20:22:111
23445991812,3cyclictest0-21swapper/123:01:061
2344599181,16cyclictest18333-21latency_hist20:55:021
2344599180,3cyclictest12484-21find22:39:011
2344599180,2cyclictest3987-21H222:02:191
2344599180,17cyclictest3985-21H222:02:191
2344599180,17cyclictest3981-21H222:02:191
2344599180,17cyclictest3351-21lxd20:14:481
2344599180,17cyclictest1515-21lxd20:04:471
2344599180,15cyclictest3981-21H222:02:191
2344599180,15cyclictest3981-21H222:02:191
2344599180,0cyclictest0-21swapper/123:37:101
23444991816,1cyclictest9-21ksoftirqd/000:21:310
23444991816,1cyclictest6570-21timerandwakeup20:32:190
23444991814,3cyclictest25555-21sendmail-mta23:02:180
23444991814,3cyclictest0-21swapper/021:30:160
2344499181,2cyclictest30075-21fschecks_time19:22:130
2344499181,2cyclictest30075-21fschecks_time19:22:130
2344499180,2cyclictest3976-21H222:02:190
2344499180,17cyclictest3981-21H222:02:190
2344499180,17cyclictest0-21swapper/020:47:180
23446991716,1cyclictest28-21ksoftirqd/222:02:422
23446991716,1cyclictest28-21ksoftirqd/222:02:412
23446991715,2cyclictest0-21swapper/200:36:072
23446991715,1cyclictest32077-21/usr/sbin/munin19:27:152
23446991715,1cyclictest31487-21timerandwakeup23:12:182
23446991715,1cyclictest28-21ksoftirqd/221:17:302
23446991714,3cyclictest0-21swapper/221:04:152
23446991714,2cyclictest5058-21cron19:35:022
23446991714,2cyclictest426-21systemd-udevd23:50:492
23446991714,2cyclictest3985-21H222:02:192
23446991714,2cyclictest3983-21H222:02:192
23446991714,2cyclictest2903-21taskset23:21:202
23446991714,2cyclictest2903-21taskset23:21:202
23446991714,2cyclictest28-21ksoftirqd/223:26:002
23446991714,2cyclictest20032-21nvmesmart_nvme022:52:162
23446991714,2cyclictest11259-21dpkg23:35:002
2344699170,2cyclictest399-20systemd-journal23:50:002
2344699170,2cyclictest24159-21cut23:57:162
2344699170,2cyclictest12615-21idleruntime-cro22:40:002
2344699170,16cyclictest5005-21dpkg19:34:502
2344699170,16cyclictest427-21pzem_current20:22:182
2344699170,16cyclictest4099-21H222:02:192
2344699170,16cyclictest4035-21H222:02:192
2344699170,16cyclictest32272-21uname00:12:152
2344699170,16cyclictest31818-21cat19:25:022
2344699170,16cyclictest31818-21cat19:25:012
2344699170,16cyclictest3053-21systemd-logind20:40:502
2344699170,16cyclictest29398-21memory00:07:142
2344699170,16cyclictest28026-21netstat23:07:172
2344699170,16cyclictest27457-21sort00:02:192
2344699170,16cyclictest25863-21tr22:07:112
2344699170,16cyclictest23415-21anvil22:58:542
2344699170,16cyclictest2333-21ls22:22:112
2344699170,16cyclictest22013-21python322:00:012
2344699170,16cyclictest20807-21expr20:02:132
2344699170,16cyclictest17447-21pzem_power20:52:172
2344699170,16cyclictest17367-21chrt19:55:222
2344699170,16cyclictest1-21systemd22:17:202
2344699170,16cyclictest1141-21snapd23:41:592
2344699170,16cyclictest0-21swapper/221:29:452
2344599172,1cyclictest21-21ksoftirqd/121:56:011
23445991715,1cyclictest3976-21H222:02:191
23445991715,1cyclictest296502sleep121:16:261
23445991714,2cyclictest3989-21H222:02:191
23445991714,2cyclictest3989-21H222:02:191
23445991714,2cyclictest3298-21fschecks_count19:32:121
23445991714,2cyclictest18754-21cpuspeed_turbos22:52:111
23445991714,2cyclictest12942-21chrt00:35:531
23445991712,4cyclictest32685-21cpuspeed_turbos23:17:121
2344599171,15cyclictest10429-21cat19:42:211
2344599170,2cyclictest6230-21expr23:27:121
2344599170,2cyclictest3709-21qmgr20:49:541
2344599170,2cyclictest1377-21lxd19:50:481
2344599170,1cyclictest4035-21H222:02:191
2344599170,1cyclictest0-21swapper/122:21:201
2344599170,1cyclictest0-21swapper/120:57:481
2344599170,16cyclictest671-21fschecks_count21:22:121
2344599170,16cyclictest3981-21H222:02:191
2344599170,16cyclictest28657-21ls00:07:111
2344599170,16cyclictest27752-21anvil22:08:461
2344599170,16cyclictest24275-21nfsd420:07:151
2344599170,16cyclictest24194-21nfsd422:02:171
2344599170,16cyclictest24194-21nfsd422:02:171
2344599170,16cyclictest16474-21munin-run21:50:011
2344599170,16cyclictest14741-21systemctl22:42:171
2344599170,16cyclictest1377-21lxd19:48:471
2344599170,16cyclictest1300-21lxd20:34:481
2344499172,1cyclictest0-21swapper/022:23:100
23444991714,2cyclictest9777-21expr19:42:170
23444991714,2cyclictest5934-21cstates19:37:110
23444991714,2cyclictest5611-21basename22:27:140
23444991714,2cyclictest3992-21H222:02:190
23444991714,2cyclictest3983-21H222:02:190
23444991714,2cyclictest32072-21idleruntime22:17:130
23444991714,2cyclictest20854-21fschecks_time23:52:140
23444991714,2cyclictest11516-21chrt21:41:320
23444991713,3cyclictest3983-21H222:02:190
23444991712,4cyclictest30766-21perf22:15:000
23444991711,4cyclictest0-21swapper/021:24:300
2344499170,2cyclictest4035-21H222:02:190
2344499170,2cyclictest3983-21H222:02:190
2344499170,2cyclictest26124-21expr22:07:120
2344499170,2cyclictest22000-21fschecks_time22:57:130
2344499170,2cyclictest1543-21sed00:15:010
2344499170,2cyclictest11275-21apt-config23:35:010
2344499170,1cyclictest3985-21H222:02:190
2344499170,1cyclictest3985-21H222:02:190
2344499170,1cyclictest0-21swapper/020:17:210
2344499170,16cyclictest7953-21expr20:37:110
2344499170,16cyclictest731-21sort19:27:150
2344499170,16cyclictest655-21cat20:22:190
2344499170,16cyclictest29735-21apache_accesses21:17:100
2344499170,16cyclictest29651-21runrttasks23:11:350
2344499170,16cyclictest28081-21awk23:07:160
2344499170,16cyclictest26280-21grep00:02:110
2344499170,16cyclictest25004-21cat21:07:160
2344499170,16cyclictest21124-21ntpq21:57:150
2344499170,16cyclictest16896-21grep23:44:590
2344499170,16cyclictest14326-21grep23:40:000
2344499170,16cyclictest13664-21fschecks_count00:37:120
23446991614,1cyclictest0-21swapper/221:32:132
23446991614,1cyclictest0-21swapper/221:05:242
23446991614,1cyclictest0-21swapper/220:15:022
2344699160,1cyclictest2069-21systemd-udevd22:40:492
2344699160,1cyclictest0-21swapper/220:57:132
2344699160,15cyclictest455-21plymouthd19:40:492
2344699160,15cyclictest4035-21H222:02:192
2344699160,15cyclictest3983-21H222:02:192
2344699160,15cyclictest32538-21cpuspeed_turbos21:22:112
2344699160,15cyclictest12756-21latency23:37:142
2344699160,15cyclictest0-21swapper/220:47:152
2344699160,15cyclictest0-21swapper/220:10:012
2344699160,15cyclictest0-21swapper/200:25:342
23445991614,1cyclictest3979-21H222:02:191
23445991614,1cyclictest3979-21H222:02:191
23445991614,1cyclictest0-21swapper/123:42:111
23445991614,1cyclictest0-21swapper/123:32:191
23445991614,1cyclictest0-21swapper/122:27:111
23445991614,1cyclictest0-21swapper/122:17:081
23445991614,1cyclictest0-21swapper/119:37:101
23445991614,1cyclictest0-21swapper/100:12:111
23445991613,2cyclictest3987-21H222:02:191
23445991613,2cyclictest3979-21H222:02:191
23445991613,2cyclictest3976-21H222:02:191
23445991613,2cyclictest28004-21lxd23:10:331
2344599160,2cyclictest7814-21cstates20:37:101
2344599160,1cyclictest0-21swapper/122:32:111
2344599160,15cyclictest3987-21H222:02:191
2344599160,15cyclictest23513-21grep23:57:121
2344599160,15cyclictest21-21ksoftirqd/121:35:281
2344599160,15cyclictest0-21swapper/121:27:121
2344599160,15cyclictest0-21swapper/100:31:511
2344599160,14cyclictest0-21swapper/120:25:181
23444991614,1cyclictest0-21swapper/021:26:360
23444991614,1cyclictest0-21swapper/020:02:200
23444991614,1cyclictest0-21swapper/000:32:120
23444991614,1cyclictest0-21swapper/000:26:000
23444991613,2cyclictest3987-21H222:02:190
23444991613,2cyclictest3987-21H222:02:190
23444991613,2cyclictest3983-21H222:02:190
23444991613,2cyclictest11907-21cpuspeed_turbos19:47:110
2344499160,2cyclictest10218-21chrt22:36:350
2344499160,1cyclictest2365-21expr20:27:120
2344499160,1cyclictest16662-21python319:55:020
2344499160,15cyclictest9023-21cat21:37:110
2344499160,15cyclictest6856-21irqstats23:27:150
2344499160,15cyclictest0-21swapper/023:17:160
2344499160,15cyclictest0-21swapper/022:42:180
2344499160,15cyclictest0-21swapper/000:17:100
2344599150,14cyclictest0-21swapper/121:10:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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