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2026-07-18 - 22:25
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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 Sat Jul 18, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15833992625,0cyclictest0-21swapper/111:38:411
1583299262,5cyclictest0-21swapper/012:40:010
15835992415,0cyclictest0-21swapper/207:50:162
1583599230,20cyclictest25756-21grep07:25:182
1583399220,18cyclictest0-21swapper/107:14:291
1583599201,2cyclictest22833-21python309:15:012
1583599200,17cyclictest0-21swapper/210:35:172
1583399203,16cyclictest19063-21cut10:05:001
15833992018,1cyclictest0-21swapper/109:40:181
15833992018,1cyclictest0-21swapper/108:18:171
1583599192,1cyclictest0-21swapper/211:39:082
1583599192,16cyclictest20356-21ls11:05:012
1583599192,16cyclictest13100-21postgres11:49:262
15835991916,2cyclictest13889-21timerwakeupswit08:00:222
15835991916,2cyclictest0-21swapper/212:20:202
15835991915,3cyclictest29862-21ls08:30:152
1583599191,17cyclictest0-21swapper/211:17:382
1583599190,18cyclictest843-21systemd-network11:05:412
1583599190,18cyclictest0-21swapper/211:22:102
1583599190,17cyclictest0-21swapper/209:28:372
1583399192,16cyclictest18631-21smtpd11:59:481
15833991916,2cyclictest2011-21chrt08:38:191
15833991916,2cyclictest15892-21snapd08:21:581
15833991915,3cyclictest0-21swapper/109:15:011
1583299190,1cyclictest0-21swapper/007:44:240
1583299190,16cyclictest3976-21H222:10:210
1583599182,15cyclictest29052chrt10:33:452
1583599182,15cyclictest25278-21expr10:15:152
1583599182,15cyclictest17973-21readlink10:00:212
1583599182,15cyclictest13978-21cat11:50:142
1583599182,15cyclictest11496-21grep09:50:142
1583599182,15cyclictest0-21swapper/211:40:222
1583599182,15cyclictest0-21swapper/208:00:012
15835991816,1cyclictest0-21swapper/208:45:142
15835991815,2cyclictest4326-21nfsd408:40:182
15835991815,2cyclictest28932-21latency_hist09:25:022
15835991815,2cyclictest2016-21date11:30:012
1583599181,3cyclictest0-21swapper/209:57:282
1583599181,2cyclictest27758-21expr10:20:122
1583599181,2cyclictest21774-21tr07:20:132
1583599181,2cyclictest19365-21cat10:05:132
1583599181,16cyclictest25506-21cat12:10:172
1583599181,16cyclictest17014-21taskset09:03:242
1583599180,3cyclictest23497-21sed09:15:012
1583599180,2cyclictest10775-21ps10:45:212
1583599180,17cyclictest31480-21/usr/sbin/munin07:35:212
1583599180,17cyclictest27998-21expr08:25:182
1583599180,17cyclictest2581-21cat11:30:132
1583599180,17cyclictest23499-21/usr/sbin/munin08:20:132
1583599180,17cyclictest16794-21fschecks_count07:10:162
1583599180,17cyclictest12349-21fschecks_time08:55:162
1583599180,17cyclictest0-21swapper/208:18:132
1583599180,16cyclictest0-21swapper/212:36:032
1583599180,15cyclictest3662-21cat07:45:012
1583399182,2cyclictest21-21ksoftirqd/108:12:481
1583399182,15cyclictest0-21swapper/109:11:421
15833991813,4cyclictest870-21systemd-logind07:46:521
1583399180,2cyclictest16796-21sshd08:05:441
1583399180,17cyclictest2024-21ntp_states12:25:181
1583299182,15cyclictest8826-21chrt10:44:160
1583299182,15cyclictest0-21swapper/010:29:220
1583299182,15cyclictest0-21swapper/010:29:220
15832991816,1cyclictest0-21swapper/008:13:540
15832991815,2cyclictest426-21systemd-udevd10:04:520
15832991815,2cyclictest13269-21nfsd408:00:180
15832991814,2cyclictest0-21swapper/008:20:010
1583299181,2cyclictest24176-21latency_hist07:25:000
1583299181,16cyclictest0-21swapper/011:32:260
1583299180,3cyclictest0-21swapper/008:40:160
1583299180,17cyclictest3983-21H222:10:210
1583299180,17cyclictest0-21swapper/008:30:210
15835991714,2cyclictest30181-21cat10:25:132
15835991714,2cyclictest30181-21cat10:25:132
15835991714,2cyclictest17542-21/usr/sbin/munin09:05:152
15835991714,2cyclictest15256-21expr08:05:142
15835991714,2cyclictest10181-21grep08:50:192
1583599171,15cyclictest0-21swapper/208:10:172
1583599170,2cyclictest7052-21cstates10:40:142
1583599170,2cyclictest6196-21cat09:40:172
1583599170,2cyclictest4757-21if_lxdbr007:45:172
1583599170,2cyclictest22317-21cstates10:10:142
1583599170,16cyclictest852-21cat08:35:162
1583599170,16cyclictest8171-21apt-get09:45:142
1583599170,16cyclictest5181-21awk12:30:202
1583599170,16cyclictest32458-21grep09:30:162
1583599170,16cyclictest2926-21/usr/sbin/munin09:35:122
1583599170,16cyclictest28364-21expr07:30:202
1583599170,16cyclictest27715-21cstates12:15:152
1583599170,16cyclictest238292sleep212:06:032
1583599170,16cyclictest23548-21apache_processe11:10:122
1583599170,16cyclictest20269-21sed12:00:202
1583599170,16cyclictest19315-21expr07:15:122
1583599170,16cyclictest16774-21cstates11:55:142
1583599170,16cyclictest1551-21tr12:25:172
1583599170,16cyclictest15237-21grep10:55:132
1583399172,15cyclictest21-21ksoftirqd/111:33:161
15833991715,1cyclictest30055-21cat09:25:161
15833991715,1cyclictest20911-21/usr/sbin/munin11:05:141
15833991714,2cyclictest870-21systemd-logind11:04:511
15833991714,2cyclictest870-21systemd-logind10:35:231
15833991714,2cyclictest6561-21/usr/sbin/munin07:50:191
15833991714,2cyclictest5799-21apt-config08:45:011
15833991714,2cyclictest426-21systemd-udevd09:36:521
15833991714,2cyclictest3707-21master08:53:061
15833991714,2cyclictest31021-21nfsd407:35:181
15833991714,2cyclictest28660-21date11:19:591
15833991714,2cyclictest26861-21cpuspeed_turbos08:25:131
15833991714,2cyclictest22227-21cut10:10:151
15833991714,2cyclictest15268-21ls09:00:161
15833991714,2cyclictest1320-21nsca12:14:091
15833991714,2cyclictest12955-21taskset09:52:031
15833991713,3cyclictest10027-21/usr/sbin/munin07:55:161
15833991711,5cyclictest870-21systemd-logind12:04:521
1583399171,15cyclictest630-21/usr/sbin/munin07:40:191
1583399170,2cyclictest8044-21nfsd412:35:191
1583399170,2cyclictest31546-21grep12:20:191
1583399170,2cyclictest3053-21systemd-logind10:58:521
1583399170,2cyclictest30200-21apache_processe10:25:131
1583399170,2cyclictest30200-21apache_processe10:25:131
1583399170,2cyclictest23232-21ntp_states12:05:181
1583399170,2cyclictest19107-21apache_processe10:05:111
1583399170,2cyclictest14506-21snapd11:27:581
1583399170,2cyclictest11176-21expr11:45:141
1583399170,16cyclictest8400-21ls11:40:141
1583399170,16cyclictest4881-21nfsd412:30:181
1583399170,16cyclictest28855-21ntp_states12:15:201
1583399170,16cyclictest24721-21apt-get10:15:131
1583399170,16cyclictest24126-21/usr/sbin/munin11:10:151
1583399170,16cyclictest2069-21systemd-udevd07:18:511
1583399170,16cyclictest15914-21sshd11:54:441
1583399170,16cyclictest13791-21grep08:00:221
1583399170,15cyclictest0-21swapper/108:55:211
1583299172,1cyclictest14312sleep009:30:480
15832991715,1cyclictest19707-21timerandwakeup11:00:220
15832991715,1cyclictest11388-21expr11:45:150
15832991715,1cyclictest0-21swapper/012:05:130
15832991715,1cyclictest0-21swapper/011:05:220
15832991715,1cyclictest0-21swapper/009:20:130
15832991714,2cyclictest3858-21nvmesmart_nvme009:35:170
15832991714,2cyclictest13075-21nvmesmart_nvme008:55:210
15832991712,4cyclictest21768-21cat10:10:000
1583299171,15cyclictest23685-21switchtime10:10:220
1583299170,2cyclictest9460-21grep11:40:190
1583299170,2cyclictest8362-21grep09:45:140
1583299170,2cyclictest32723-21cut12:25:010
1583299170,2cyclictest28004-21lxd07:48:430
1583299170,2cyclictest25790-21python308:25:010
1583299170,2cyclictest14606-21sed09:55:180
1583299170,2cyclictest10859-21smtp09:50:120
1583299170,2cyclictest10151-21lxd09:08:430
1583299170,16cyclictest9411-21cpuspeed_turbos10:45:150
1583299170,16cyclictest920-21grep08:35:150
1583299170,16cyclictest8955-21egrep08:50:140
1583299170,16cyclictest8036-21cat11:40:010
1583299170,16cyclictest7329-21idleruntime07:50:160
1583299170,16cyclictest7012-21grep09:40:220
1583299170,16cyclictest4723-21memory10:35:180
1583299170,16cyclictest3989-21H222:10:210
1583299170,16cyclictest3721-21expr12:30:130
1583299170,16cyclictest3414-21master12:15:110
1583299170,16cyclictest25594-21grep07:25:170
1583299170,16cyclictest16299-21ps09:00:210
1583299170,16cyclictest1522-21lxd11:16:430
1583299170,16cyclictest14496-21snapd11:27:580
1583299170,16cyclictest0-21swapper/010:30:170
1583299170,16cyclictest0-21swapper/010:20:130
15833991614,1cyclictest8344-21grep09:45:151
15833991614,1cyclictest6591-21dpkg10:40:131
15833991614,1cyclictest26308-21/usr/sbin/munin09:20:101
15833991614,1cyclictest24994-21grep07:25:141
15833991614,1cyclictest0-21swapper/110:50:031
15833991614,1cyclictest0-21swapper/110:50:031
15833991614,1cyclictest0-21swapper/110:30:081
15833991614,1cyclictest0-21swapper/109:05:211
1583399160,2cyclictest30948-21pzem_energy08:30:221
1583399160,2cyclictest13609-21acpi09:55:131
1583399160,1cyclictest22339-21smartctl07:20:151
1583399160,1cyclictest0-21swapper/110:20:121
1583399160,15cyclictest426-21systemd-udevd11:20:521
1583399160,15cyclictest27384-21expr07:30:151
1583399160,15cyclictest0-21swapper/110:45:151
1583399160,15cyclictest0-21swapper/109:30:141
1583399160,15cyclictest0-21swapper/108:45:001
15832991615,1cyclictest0-21swapper/010:55:190
15832991614,1cyclictest6033-21https08:45:010
15832991614,1cyclictest20765-21expr09:10:150
15832991614,1cyclictest0-21swapper/012:10:140
15832991614,1cyclictest0-21swapper/011:50:120
15832991614,1cyclictest0-21swapper/007:15:170
15832991614,1cyclictest0-21swapper/007:10:130
15832991613,2cyclictest23430-21apt-config09:15:020
1583299160,2cyclictest14784-21/usr/sbin/munin08:05:170
1583299160,15cyclictest4772chrt12:25:070
1583299160,15cyclictest3989-21H222:10:210
1583299160,15cyclictest29065-21apt-get09:25:110
1583299160,15cyclictest27757-21fschecks_time07:30:160
1583299160,15cyclictest12443-21apache_processe10:50:130
1583299160,15cyclictest12443-21apache_processe10:50:130
1583299160,15cyclictest10589-21awk07:55:170
1583299160,15cyclictest0-21swapper/010:15:190
15832991513,1cyclictest29385-21expr11:20:130
15832991513,1cyclictest16997-21fschecks_count11:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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