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2026-04-12 - 00:16
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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 Sat Apr 11, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10546992826,2cyclictest0-21swapper/111:00:231
10546992322,0cyclictest0-21swapper/108:44:431
1054799220,18cyclictest0-21swapper/209:15:132
1054799210,20cyclictest843-21systemd-network11:31:262
1054599210,3cyclictest0-21swapper/007:26:350
10547992014,5cyclictest426-21systemd-udevd12:34:522
1054799200,5cyclictest870-21systemd-logind09:58:522
1054699204,15cyclictest0-21swapper/111:38:331
1054799192,2cyclictest30111-21smtpd10:32:292
1054799192,16cyclictest5717-21cpuspeed_turbos09:50:132
10547991918,1cyclictest32646-21kworker/2:008:44:422
10547991917,1cyclictest0-21swapper/208:10:272
1054799190,18cyclictest426-21systemd-udevd09:38:522
10546991916,2cyclictest13750-21uname09:05:201
1054699190,1cyclictest0-21swapper/110:20:001
1054599194,1cyclictest0-21swapper/012:38:140
1054599193,15cyclictest0-21swapper/009:34:020
10545991917,1cyclictest9-21ksoftirqd/008:30:140
10545991917,1cyclictest0-21swapper/011:08:590
10545991917,1cyclictest0-21swapper/009:58:210
1054599190,3cyclictest0-21swapper/007:15:210
1054799182,15cyclictest0-21swapper/208:25:202
1054799182,15cyclictest0-21swapper/207:21:012
10547991815,2cyclictest14883-21idleruntime12:00:152
10547991815,2cyclictest13679-21chrt12:00:002
10547991815,2cyclictest12471-21nfsd407:10:172
10547991815,1cyclictest0-21swapper/208:09:222
1054799181,2cyclictest7618-21switchtime11:45:222
1054799181,2cyclictest22570-21nfsd411:15:172
1054799180,17cyclictest426-21systemd-udevd07:38:522
1054799180,17cyclictest2444-21fschecks_count07:50:172
1054699182,15cyclictest0-21swapper/108:15:001
1054699181,16cyclictest863-21avahi-daemon10:05:201
10546991811,5cyclictest2007-21systemd-journal08:50:541
1054699181,15cyclictest0-21swapper/107:26:361
1054699180,3cyclictest1829-21systemd-journal12:16:591
1054699180,16cyclictest0-21swapper/112:26:461
1054599182,15cyclictest9-21ksoftirqd/010:18:530
10545991814,3cyclictest21182-21apache208:25:010
1054599180,3cyclictest1523-21lxd09:22:420
10547991715,1cyclictest0-21swapper/210:45:012
10547991714,2cyclictest3991-21H222:10:212
10547991714,2cyclictest3989-21H222:10:212
10547991714,2cyclictest3989-21H222:10:212
10547991714,2cyclictest3983-21H222:10:212
10547991714,2cyclictest3356-21awk08:50:122
10547991714,2cyclictest3053-21systemd-logind09:22:522
10547991714,2cyclictest25187-21sed08:30:172
10547991714,2cyclictest16860-21apt-config10:10:002
10547991714,2cyclictest16771-21apt-config07:20:012
10547991714,2cyclictest12647-21mailstats10:00:222
10547991714,2cyclictest0-21swapper/207:28:332
10547991713,3cyclictest0-21swapper/210:57:172
10547991713,3cyclictest0-21swapper/210:57:172
1054799171,15cyclictest5096-21wc07:55:152
1054799171,15cyclictest0-21swapper/212:25:162
1054799170,2cyclictest28595-21nvmesmart_nvme008:35:212
1054799170,2cyclictest2145-21switchtime08:45:222
1054799170,2cyclictest15886-21cpuspeed_turbos11:05:142
1054799170,2cyclictest14892-21munin-plugin-st09:10:012
1054799170,16cyclictest9090-21/usr/sbin/munin09:00:142
1054799170,16cyclictest8841-21nfsd410:50:182
1054799170,16cyclictest662-21vmstat10:35:222
1054799170,16cyclictest455-21plymouthd08:20:152
1054799170,16cyclictest3976-21H222:10:212
1054799170,16cyclictest28147-21nfsd411:25:192
1054799170,16cyclictest25907-21fschecks_count12:20:162
1054799170,16cyclictest18226-21grep12:05:192
1054799170,16cyclictest16748-21snapd07:32:482
1054799170,16cyclictest15839-21which09:10:152
1054799170,16cyclictest15839-21which09:10:142
1054799170,16cyclictest15315-21munin-run11:05:012
1054799170,16cyclictest10019-21ntpq11:50:182
1054799170,16cyclictest0-21swapper/212:15:202
1054799170,15cyclictest0-21swapper/208:03:462
1054699172,1cyclictest0-21swapper/109:55:211
10546991715,1cyclictest21-21ksoftirqd/112:35:141
10546991714,2cyclictest3550-21if_eno109:45:161
10546991714,2cyclictest3053-21systemd-logind10:10:521
10546991714,2cyclictest25311-21apt-get12:20:141
10546991714,2cyclictest17269-21cpuspeed_turbos07:20:131
10546991714,2cyclictest1552-21/usr/sbin/munin08:45:171
10546991713,1cyclictest0-21swapper/111:20:011
1054699171,15cyclictest3981-21H222:10:211
1054699171,15cyclictest0-21swapper/107:48:521
1054699170,2cyclictest706-21python312:34:591
1054699170,2cyclictest3981-21H222:10:211
1054699170,2cyclictest16092-21chrt07:17:361
1054699170,2cyclictest1521-21lxd07:40:411
1054699170,2cyclictest1517-21lxd09:42:421
1054699170,2cyclictest10680-21readlink09:00:211
1054699170,1cyclictest4099-21H222:10:211
1054699170,16cyclictest5793-21cpuspeed_turbos09:50:141
1054699170,16cyclictest4035-21H222:10:211
1054699170,16cyclictest3053-21systemd-logind08:06:521
1054699170,16cyclictest27886-21cut07:40:001
1054699170,16cyclictest19371-21idleruntime-cro12:10:001
1054699170,16cyclictest16830-21snapd07:30:381
1054699170,16cyclictest1517-21lxd09:22:411
1054699170,16cyclictest14806-21fschecks_time12:00:141
1054699170,16cyclictest12728-21taskset11:00:011
1054699170,16cyclictest12728-21taskset11:00:001
1054599172,1cyclictest9-21ksoftirqd/008:40:360
10545991717,0cyclictest0-21swapper/011:00:230
10545991716,1cyclictest28017-21apache_accesses10:30:110
10545991715,1cyclictest9-21ksoftirqd/009:26:000
10545991715,1cyclictest9-21ksoftirqd/007:37:440
10545991715,1cyclictest2393-21chrt11:39:240
10545991714,2cyclictest8664-21apache_volume11:50:120
10545991714,2cyclictest6957-21/usr/sbin/munin08:55:150
10545991714,2cyclictest32580-21ls09:40:140
10545991714,2cyclictest31373-21apache_processe07:45:130
10545991714,2cyclictest24335-21timerwakeupswit12:15:220
10545991714,2cyclictest16977-21cnf-update-db10:10:010
10545991714,2cyclictest1594-21systemd12:00:510
10545991714,2cyclictest15192-21tr10:05:190
10545991714,2cyclictest14348-21postgres09:07:270
10545991714,2cyclictest1-21systemd07:45:000
10545991714,2cyclictest11462-21cpuspeed_turbos07:10:140
10545991714,2cyclictest1057-21cron12:10:000
10545991713,3cyclictest9-21ksoftirqd/011:34:080
10545991713,3cyclictest4721-21apache211:20:170
1054599171,15cyclictest24595-21sshd07:30:510
1054599170,2cyclictest455-21plymouthd11:15:180
1054599170,2cyclictest2872-21systemd-logind08:48:520
1054599170,2cyclictest18704-21grep11:10:130
1054599170,2cyclictest16335-21nfsd409:10:180
1054599170,2cyclictest16335-21nfsd409:10:170
1054599170,2cyclictest11834-21/usr/sbin/munin08:05:210
1054599170,2cyclictest11483-21cpuspeed_turbos11:55:130
1054599170,1cyclictest3991-21H222:10:210
1054599170,16cyclictest9820-21cron10:55:000
1054599170,16cyclictest870-21systemd-logind09:48:520
1054599170,16cyclictest3989-21H222:10:210
1054599170,16cyclictest3989-21H222:10:210
1054599170,16cyclictest28605-21df12:25:130
1054599170,16cyclictest27346-21cpuspeed_turbos08:35:140
1054599170,16cyclictest2012-21cpuspeed_turbos07:50:160
1054599170,16cyclictest12453-21ntp_states10:00:180
10547991614,1cyclictest617-21apt-get12:35:092
10547991614,1cyclictest0-21swapper/211:35:162
10547991614,1cyclictest0-21swapper/210:15:142
10547991614,1cyclictest0-21swapper/209:45:152
10547991614,1cyclictest0-21swapper/209:30:202
1054799160,1cyclictest0-21swapper/212:10:072
1054799160,1cyclictest0-21swapper/210:20:182
1054799160,15cyclictest5351-21expr10:45:142
1054799160,15cyclictest28-21ksoftirqd/209:25:142
1054799160,15cyclictest26766-21uname10:25:212
1054799160,15cyclictest0-21swapper/211:20:212
1054799160,15cyclictest0-21swapper/211:10:132
1054799160,15cyclictest0-21swapper/209:40:072
1054799160,15cyclictest0-21swapper/208:55:172
10546991614,1cyclictest29206-21apache_volume09:35:111
10546991614,1cyclictest1730-21/usr/sbin/munin10:40:121
10546991614,1cyclictest0-21swapper/111:50:121
10546991614,1cyclictest0-21swapper/111:25:161
10546991614,1cyclictest0-21swapper/110:35:141
10546991614,1cyclictest0-21swapper/110:30:111
10546991614,1cyclictest0-21swapper/109:30:151
10546991614,1cyclictest0-21swapper/108:25:121
10546991614,1cyclictest0-21swapper/108:00:101
10546991613,2cyclictest5601-21lxd10:54:411
10546991613,2cyclictest2971-21apache_accesses11:40:091
10546991613,1cyclictest0-21swapper/109:25:141
1054699160,2cyclictest23188-21grep10:20:141
1054699160,1cyclictest0-21swapper/111:55:121
1054699160,1cyclictest0-21swapper/108:15:131
1054699160,1cyclictest0-21swapper/107:10:151
1054699160,15cyclictest6278-21processes10:45:211
1054699160,15cyclictest5511-21cron11:45:011
1054699160,15cyclictest3991-21H222:10:211
1054699160,15cyclictest25508-21cpuspeed_turbos10:25:151
1054699160,15cyclictest19900-21cut12:10:141
1054699160,15cyclictest19047-21cat11:10:131
1054699160,15cyclictest1523-21lxd10:00:421
1054699160,15cyclictest0-21swapper/111:30:151
1054699160,15cyclictest0-21swapper/111:20:121
1054699160,15cyclictest0-21swapper/109:10:141
1054699160,15cyclictest0-21swapper/109:10:141
1054699160,15cyclictest0-21swapper/107:50:131
10545991614,1cyclictest0-21swapper/011:27:280
10545991614,1cyclictest0-21swapper/010:45:140
10545991614,1cyclictest0-21swapper/009:15:020
10545991614,1cyclictest0-21swapper/008:25:130
10545991613,2cyclictest4826-21acpi07:55:110
10545991613,2cyclictest3991-21H222:10:210
10545991612,3cyclictest8186-21/usr/sbin/munin08:00:170
1054599161,15cyclictest9-21ksoftirqd/009:37:000
1054599160,1cyclictest0-21swapper/012:20:170
1054599160,15cyclictest9124-21cpu09:00:140
1054599160,15cyclictest4566-21awk11:40:160
1054599160,15cyclictest31727-21/usr/sbin/munin12:30:160
1054599160,15cyclictest2757-21latency10:40:160
1054599160,15cyclictest16994-21dpkg07:20:020
1054599160,15cyclictest14840-21switchtime08:10:220
1054599160,15cyclictest0-21swapper/012:10:140
1054599160,15cyclictest0-21swapper/011:45:110
10546991514,1cyclictest0-21swapper/108:55:141
10546991513,1cyclictest0-21swapper/108:20:191
1054599150,14cyclictest0-21swapper/010:35:120
1054599150,14cyclictest0-21swapper/010:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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