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2026-08-24 - 01:58
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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 Sun Aug 23, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
621992414,6cyclictest0-21swapper/111:50:001
621992313,9cyclictest25904-21sshd08:50:141
621992312,7cyclictest15039-21chrt07:35:111
62199231,21cyclictest3450-21gsd-color10:10:191
621992311,7cyclictest9453-21chrt09:17:551
62199230,2cyclictest3746-21nfsd408:10:171
62199230,1cyclictest9603-21apt-get07:25:121
62199221,1cyclictest0-21swapper/110:01:081
62199220,2cyclictest25662-21sed12:38:591
62199220,2cyclictest16096-21uname12:20:161
62199220,2cyclictest13043-21expr11:20:131
62199220,21cyclictest23840-21nfsd408:45:181
62199220,21cyclictest18809-21tr09:35:141
62199220,21cyclictest0-21swapper/111:40:181
62199220,16cyclictest26816-21cat09:50:011
62199220,16cyclictest25727-21perf07:55:001
62199220,15cyclictest0-21swapper/110:25:171
61699227,14cyclictest0-21swapper/010:46:030
621992114,6cyclictest9544-21pzem_current08:20:211
621992114,6cyclictest7860-21sort08:20:011
621992114,6cyclictest26814-21grep10:45:181
621992114,6cyclictest0-21swapper/111:30:201
62199210,2cyclictest27567-21ls09:50:131
62199210,2cyclictest15956-21chrt09:30:121
62199210,20cyclictest0-21swapper/111:25:141
62199210,1cyclictest0-21swapper/111:10:151
62199210,1cyclictest0-21swapper/110:30:141
62199210,1cyclictest0-21swapper/110:15:221
62199210,1cyclictest0-21swapper/109:55:171
62199210,16cyclictest8572-21timerandwakeup12:05:231
62199210,16cyclictest22224-21chrt10:39:401
62199210,0cyclictest0-21swapper/107:10:461
61699210,20cyclictest843-21systemd-network12:14:370
621992014,5cyclictest22681-21/usr/sbin/munin10:40:211
621992014,5cyclictest15002-21sendmail-mta09:28:401
621992014,5cyclictest10201-21expr12:10:141
621992014,5cyclictest0-21swapper/107:20:181
621992013,6cyclictest0-21swapper/109:00:151
62199200,2cyclictest22261-21cat11:35:131
62199200,1cyclictest0-21swapper/109:10:231
62199200,19cyclictest0-21swapper/112:00:141
62199200,19cyclictest0-21swapper/111:15:161
62199200,19cyclictest0-21swapper/111:00:181
62199200,19cyclictest0-21swapper/108:55:151
62199200,15cyclictest28885-21http_loadtime10:50:151
62199200,15cyclictest2048-21grep11:55:171
62199200,15cyclictest1797-21perf08:10:001
62199200,15cyclictest0-21swapper/111:55:001
62199200,15cyclictest0-21swapper/108:00:151
62199200,15cyclictest0-21swapper/107:45:171
62199200,15cyclictest0-21swapper/107:15:211
62199200,14cyclictest13815-21cat08:29:551
62199200,14cyclictest0-21swapper/111:05:121
61699203,2cyclictest17692-21fschecks_count10:30:150
616992020,0cyclictest0-21swapper/007:46:550
61699201,1cyclictest0-21swapper/009:34:320
61699200,19cyclictest9-21ksoftirqd/007:35:120
628991917,1cyclictest0-21swapper/212:16:442
62899191,2cyclictest31209-21munin-plugin-st08:05:002
621991914,4cyclictest14241-21/usr/sbin/munin08:30:181
621991914,4cyclictest0-21swapper/112:18:171
621991914,4cyclictest0-21swapper/110:20:091
621991914,4cyclictest0-21swapper/108:39:141
621991913,5cyclictest4711-21chrt10:05:201
621991913,5cyclictest10082-21egrep09:20:121
62199190,1cyclictest24016-21cut09:45:011
62199190,1cyclictest24016-21cut09:45:001
62199190,1cyclictest0-21swapper/109:05:121
62199190,18cyclictest0-21swapper/112:26:141
62199190,18cyclictest0-21swapper/108:40:331
62199190,18cyclictest0-21swapper/107:32:401
62199190,18cyclictest0-21swapper/107:32:391
62199190,15cyclictest32090-21nfsd410:55:181
62199190,15cyclictest0-21swapper/112:30:191
62199190,0cyclictest0-21swapper/107:40:131
61699193,15cyclictest9-21ksoftirqd/009:55:210
616991917,1cyclictest101rcuc/012:22:260
628991815,2cyclictest2837-21smartctl09:05:202
628991815,2cyclictest22315-21idleruntime09:40:152
628991815,2cyclictest22315-21idleruntime09:40:152
628991814,3cyclictest0-21swapper/207:14:492
628991814,2cyclictest28524-21fschecks_time11:45:172
628991813,4cyclictest17739-21fschecks_time10:30:162
621991812,5cyclictest26618-21expr07:55:151
61699183,9cyclictest0-21swapper/008:25:010
61699182,15cyclictest101rcuc/012:25:070
616991816,1cyclictest9-21ksoftirqd/009:30:010
616991816,1cyclictest101rcuc/012:35:130
616991815,2cyclictest9-21ksoftirqd/009:15:150
61699180,3cyclictest28004-21lxd08:06:440
628991716,1cyclictest28-21ksoftirqd/212:33:592
628991714,2cyclictest9771-21timerandwakeup08:20:212
628991714,2cyclictest6838-21cron11:10:012
628991714,2cyclictest4099-21H222:10:212
628991714,2cyclictest3989-21H222:10:212
628991714,2cyclictest3981-21H222:10:212
628991714,2cyclictest32511-21smtpd11:50:272
628991714,2cyclictest27928-21cut10:49:592
628991714,2cyclictest23779-21sed10:40:172
628991714,2cyclictest19079-21ls09:35:132
628991714,2cyclictest1549-21grep10:00:182
628991714,2cyclictest14047-21grep11:20:182
628991712,2cyclictest0-21swapper/207:35:142
62899170,2cyclictest9771-21cpuspeed_turbos07:25:142
62899170,2cyclictest7622-21awk08:20:012
62899170,2cyclictest32461-21pzem_current09:00:192
62899170,2cyclictest1515-21lxd09:58:442
62899170,2cyclictest14499-21snapd08:05:562
62899170,2cyclictest13455-21timerwakeupswit10:20:222
62899170,1cyclictest0-21swapper/208:25:122
62899170,16cyclictest8525-21netstat09:15:192
62899170,16cyclictest6777-21/usr/sbin/munin12:05:172
62899170,16cyclictest5900-21ls07:15:222
62899170,16cyclictest4855-21apt08:15:002
62899170,16cyclictest399-20systemd-journal11:32:162
62899170,16cyclictest3385-21expr10:05:132
62899170,16cyclictest24883-21apt-config08:48:522
62899170,16cyclictest21670-21sed07:45:182
62899170,16cyclictest21629-21taskset11:35:002
62899170,16cyclictest15779-21/usr/sbin/munin08:30:222
62899170,16cyclictest11380-21nfsd409:20:182
62899170,15cyclictest26160-21runrttasks11:40:182
61699172,1cyclictest9-21ksoftirqd/008:13:240
61699172,1cyclictest101rcuc/008:30:140
61699172,1cyclictest101rcuc/008:20:010
616991715,1cyclictest9-21ksoftirqd/012:00:140
616991715,1cyclictest9-21ksoftirqd/011:55:130
616991715,1cyclictest9-21ksoftirqd/007:25:140
616991715,1cyclictest101rcuc/011:20:000
616991715,1cyclictest101rcuc/010:55:130
616991715,1cyclictest101rcuc/010:20:180
616991715,1cyclictest101rcuc/009:25:010
616991715,1cyclictest0-21swapper/010:50:220
616991714,2cyclictest9211-21ls07:25:010
616991714,2cyclictest5253-21sed07:15:190
616991714,2cyclictest449-21expr10:00:130
616991714,2cyclictest3414-21master11:05:160
616991714,2cyclictest32469-21sed11:50:210
616991713,3cyclictest26385-21cstates07:55:140
616991713,2cyclictest3987-21H222:10:210
61699171,2cyclictest9-21ksoftirqd/010:05:010
61699171,15cyclictest14629-21timerandwakeup11:20:220
61699171,15cyclictest101rcuc/008:50:120
61699170,2cyclictest2651-21nfsd411:00:180
61699170,2cyclictest24458-21expr09:45:140
61699170,2cyclictest21305-21fschecks_time12:30:160
61699170,1cyclictest0-21swapper/010:35:210
61699170,16cyclictest9594-21cron11:15:000
61699170,16cyclictest455-21plymouthd11:25:130
61699170,16cyclictest31005-21sshd09:00:140
61699170,16cyclictest22074-21chrt11:35:130
61699170,16cyclictest19704-21sed09:35:170
61699170,16cyclictest1085-21gdbus09:05:220
61699170,16cyclictest10753-21timerwakeupswit10:15:210
61699170,16cyclictest10151-21lxd09:14:440
628991615,1cyclictest0-21swapper/212:25:142
628991614,1cyclictest21582-21switchtime08:40:212
628991614,1cyclictest17420-21ps11:25:202
628991614,1cyclictest0-21swapper/212:35:122
628991614,1cyclictest0-21swapper/212:10:152
628991614,1cyclictest0-21swapper/210:13:112
628991614,1cyclictest0-21swapper/209:45:142
628991614,1cyclictest0-21swapper/209:30:132
628991614,1cyclictest0-21swapper/209:10:172
628991614,1cyclictest0-21swapper/207:40:132
628991614,1cyclictest0-21swapper/207:20:192
628991613,2cyclictest16969-21smtpd08:35:112
62899160,2cyclictest4342-21expr12:00:142
62899160,2cyclictest10011-21/usr/sbin/munin11:15:192
62899160,1cyclictest1085-21gdbus12:20:202
62899160,1cyclictest0-21swapper/211:55:122
62899160,1cyclictest0-21swapper/210:15:112
62899160,15cyclictest25965-21expr08:50:142
62899160,15cyclictest0-21swapper/211:00:142
62899160,15cyclictest0-21swapper/210:55:142
62899160,15cyclictest0-21swapper/210:35:202
62899160,15cyclictest0-21swapper/210:25:162
62899160,15cyclictest0-21swapper/209:50:132
62899160,15cyclictest0-21swapper/209:25:132
616991615,1cyclictest9-21ksoftirqd/007:40:120
616991614,1cyclictest9-21ksoftirqd/010:40:060
616991614,1cyclictest3209-21JS22:10:210
616991614,1cyclictest254512sleep007:51:440
616991614,1cyclictest101rcuc/009:50:130
616991614,1cyclictest0-21swapper/011:45:140
616991614,1cyclictest0-21swapper/008:45:150
616991614,1cyclictest0-21swapper/008:40:160
616991614,1cyclictest0-21swapper/008:00:140
616991613,2cyclictest14448-21cpuspeed_turbos10:25:140
61699161,1cyclictest9-21ksoftirqd/012:05:130
61699160,1cyclictest0-21swapper/007:30:190
61699160,1cyclictest0-21swapper/007:30:190
61699160,15cyclictest0-21swapper/012:15:140
61699160,15cyclictest0-21swapper/011:30:160
61699160,15cyclictest0-21swapper/009:40:140
61699160,15cyclictest0-21swapper/009:40:130
61699160,15cyclictest0-21swapper/008:55:150
61699160,15cyclictest0-21swapper/008:35:130
61699160,15cyclictest0-21swapper/008:25:120
61699160,15cyclictest0-21swapper/007:10:140
62899150,1cyclictest0-21swapper/210:50:232
62899150,1cyclictest0-21swapper/208:55:152
62899150,14cyclictest0-21swapper/207:30:162
62899150,14cyclictest0-21swapper/207:30:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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