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2026-04-15 - 21:02
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Apr 15, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
825099250,20cyclictest4515-21iwlist11:45:152
824299210,1cyclictest0-21swapper/011:34:460
824299210,1cyclictest0-21swapper/011:34:450
825099204,15cyclictest0-21swapper/211:32:162
825099204,15cyclictest0-21swapper/211:32:152
825099202,17cyclictest0-21swapper/209:49:072
8250992017,2cyclictest0-21swapper/211:00:182
825099200,19cyclictest843-21systemd-network10:12:552
825099192,2cyclictest13287-21cut09:10:182
825099192,2cyclictest0-21swapper/210:15:012
825099192,1cyclictest0-21swapper/212:39:582
825099192,1cyclictest0-21swapper/211:54:502
825099192,1cyclictest0-21swapper/210:30:002
825099192,1cyclictest0-21swapper/209:15:042
8250991915,3cyclictest7987-21systemctl09:00:202
8250991915,2cyclictest9312-21cpuspeed_turbos09:05:142
8250991913,5cyclictest870-21systemd-logind07:26:522
825099191,17cyclictest24971-21php7.007:39:002
825099190,18cyclictest399-20systemd-journal11:29:542
824799192,16cyclictest0-21swapper/107:37:081
8247991916,2cyclictest7864-21processes09:00:191
824299192,16cyclictest31504-21cut09:45:000
8242991917,1cyclictest0-21swapper/012:06:250
8242991917,1cyclictest0-21swapper/010:31:420
8242991916,2cyclictest21976-21cpuspeed_turbos11:20:120
824299190,17cyclictest1829-21systemd-journal09:55:140
825099182,15cyclictest0-21swapper/207:18:502
8250991816,1cyclictest149372sleep208:17:502
8250991816,1cyclictest0-21swapper/212:10:152
8250991815,2cyclictest3774-21ntp_kernel_pll_09:50:172
8250991815,2cyclictest2815-21ntpq07:55:202
8250991814,3cyclictest843-21systemd-network11:18:252
825099181,16cyclictest1145-21fschecks_count11:40:152
825099180,3cyclictest16875-21sed12:09:012
825099180,17cyclictest870-21systemd-logind08:13:512
825099180,17cyclictest16755-21snapd10:48:162
824799182,2cyclictest31255-21expr07:50:141
8247991816,1cyclictest31733-21fschecks_count12:35:131
8247991816,1cyclictest221652chrt12:15:521
8247991816,1cyclictest21-21ksoftirqd/112:20:081
8247991815,2cyclictest3981-21H222:10:211
8247991814,3cyclictest16891-21sort12:09:011
8247991814,3cyclictest0-21swapper/108:04:151
8247991814,2cyclictest18736-21apache208:25:011
8247991814,1cyclictest0-21swapper/111:33:591
8247991814,1cyclictest0-21swapper/111:33:581
824799181,1cyclictest18603-21fschecks_time09:20:131
824799181,1cyclictest18603-21fschecks_time09:20:131
824799180,17cyclictest4287-21grep08:55:151
824799180,17cyclictest4287-21grep08:55:151
824799180,17cyclictest25756-21nfsd411:25:171
824299182,1cyclictest296682chrt08:43:500
824299182,15cyclictest9223-21cpuspeed_turbos09:05:130
8242991814,3cyclictest14400-21python309:15:000
824299180,17cyclictest20314-21nfsd408:25:190
825099172,1cyclictest0-21swapper/208:30:172
8250991716,1cyclictest28-21ksoftirqd/210:20:112
8250991715,1cyclictest0-21swapper/207:20:152
8250991714,2cyclictest29784-21ntp_states12:30:162
8250991714,2cyclictest25899-21grep10:30:142
8250991714,2cyclictest21873-21sort11:20:132
8250991714,2cyclictest13033-21nfsd412:00:172
8250991713,3cyclictest0-21swapper/208:27:542
825099170,2cyclictest9092-21/usr/sbin/munin11:55:112
825099170,2cyclictest8961-21sed10:55:152
825099170,2cyclictest31375-21ntp_states11:35:192
825099170,2cyclictest17654-21chrt08:21:592
825099170,2cyclictest1332-21apt-get10:45:002
825099170,1cyclictest0-21swapper/211:06:122
825099170,1cyclictest0-21swapper/208:50:132
825099170,16cyclictest8999-21cpuspeed_turbos07:10:142
825099170,16cyclictest7166-21/usr/sbin/munin08:05:192
825099170,16cyclictest6356-21needreboot09:55:182
825099170,16cyclictest5841-21ntp_kernel_pll_08:00:202
825099170,16cyclictest455-21plymouthd08:40:142
825099170,16cyclictest30360-21cpuspeed_turbos08:45:122
825099170,16cyclictest29361-21kernelversion10:35:182
825099170,16cyclictest26873-21ntp_kernel_err07:40:182
825099170,16cyclictest25784-21cpuspeed_turbos12:25:142
825099170,16cyclictest22993-21grep12:20:132
825099170,16cyclictest20949-21expr09:25:132
825099170,16cyclictest1594-21systemd09:34:512
825099170,16cyclictest13034-21sed10:09:002
825099170,16cyclictest0-21swapper/211:10:192
8247991714,2cyclictest4070-21plymouth10:45:211
8247991714,2cyclictest399-20systemd-journal07:40:001
8247991714,2cyclictest28660-21expr07:45:151
8247991714,2cyclictest2441-21memory07:55:181
8247991714,2cyclictest22012-21ntpq09:25:181
8247991714,2cyclictest17233-21kernelversion11:10:171
8247991714,2cyclictest15699-21sessionclean11:09:011
8247991714,2cyclictest14174-21sshd09:13:241
8247991714,2cyclictest14109-21seq12:04:531
8247991714,2cyclictest13620-21if_enp1s008:15:161
8247991714,2cyclictest1351-21lxd09:34:421
8247991714,2cyclictest11272-21df11:00:151
8247991713,3cyclictest3981-21H222:10:211
824799171,2cyclictest12496-21timerwakeupswit10:05:201
824799170,2cyclictest7870-21pzem11:50:191
824799170,2cyclictest20689-21grep11:15:181
824799170,2cyclictest1227-21sort11:40:161
824799170,16cyclictest8203-21cat10:55:131
824799170,16cyclictest4285-21fschecks_time11:45:131
824799170,16cyclictest399-20systemd-journal08:14:561
824799170,16cyclictest31700-21sed08:45:191
824799170,16cyclictest27824-21expr08:40:141
824799170,16cyclictest25868-21ntpq08:35:171
824799170,16cyclictest19880-21apache_accesses07:30:101
824799170,16cyclictest1874-21grep08:50:161
824799170,16cyclictest17936-21if_eno107:25:151
824799170,16cyclictest16349-21nfsd409:15:181
824799170,16cyclictest11621-21basename09:10:001
824799170,16cyclictest1035-21thermald09:45:201
824799170,16cyclictest0-21swapper/112:25:251
824799170,16cyclictest0-21swapper/107:22:101
824299172,1cyclictest0-21swapper/007:17:370
8242991715,1cyclictest3981-21H222:10:210
8242991715,1cyclictest27528-21open_inodes09:35:190
8242991714,2cyclictest7351-21cpuspeed_turbos08:05:130
8242991714,2cyclictest4843-21/usr/sbin/munin11:45:170
8242991714,2cyclictest3976-21H222:10:210
8242991714,2cyclictest32504-21ntp_states12:35:180
8242991714,2cyclictest27953-21cron12:34:560
8242991714,2cyclictest20950-21missed_timers10:20:150
8242991714,2cyclictest15381-21grep09:15:140
8242991714,2cyclictest1517-21lxd08:58:420
8242991714,2cyclictest1517-21lxd08:58:410
8242991714,2cyclictest12390-21expr12:00:130
8242991713,3cyclictest2069-21systemd-udevd08:10:520
8242991713,3cyclictest0-21swapper/009:45:130
824299170,2cyclictest426-21systemd-udevd08:54:520
824299170,2cyclictest29835-21ntp_offset10:35:190
824299170,2cyclictest23275-21ls12:20:130
824299170,2cyclictest18410-21nfsd410:15:160
824299170,2cyclictest14726-21expr07:20:130
824299170,2cyclictest11489-21cat10:05:140
824299170,16cyclictest32633-21cat11:40:000
824299170,16cyclictest26948-21expr12:25:180
824299170,16cyclictest21910-21chrt07:31:270
824299170,16cyclictest21719-21pzem_voltage12:15:200
824299170,16cyclictest20695-21cat11:15:190
824299170,16cyclictest17531-21nfsd411:10:180
824299170,16cyclictest17434-21timerwakeupswit08:20:210
824299170,16cyclictest1521-21lxd11:26:420
824299170,16cyclictest10496-21nvmesmart_nvme011:55:190
8250991614,1cyclictest0-21swapper/210:00:162
8250991614,1cyclictest0-21swapper/208:55:012
8250991614,1cyclictest0-21swapper/208:55:002
8250991614,1cyclictest0-21swapper/207:30:152
8250991613,2cyclictest5834-21fschecks_count10:50:142
825099160,1cyclictest27526-21open_inodes09:35:192
825099160,1cyclictest0-21swapper/207:45:192
825099160,15cyclictest29011-21grep09:40:132
825099160,15cyclictest24908-21expr08:35:132
825099160,15cyclictest18286-21expr09:20:122
825099160,15cyclictest18286-21expr09:20:122
825099160,15cyclictest0-21swapper/207:50:122
8247991614,1cyclictest0-21swapper/111:20:161
8247991614,1cyclictest0-21swapper/110:10:001
8247991614,1cyclictest0-21swapper/109:35:121
8247991613,2cyclictest2007-21systemd-journal10:54:061
824799160,2cyclictest5878-21fschecks_time09:55:141
824799160,2cyclictest28391-21grep12:30:111
824799160,15cyclictest32296-21latency10:40:171
824799160,15cyclictest26150-21expr10:30:141
824799160,15cyclictest2367-21expr09:50:131
824799160,15cyclictest20518-21grep10:20:131
824799160,15cyclictest17233-21cat08:20:211
824799160,15cyclictest11928-21ls07:15:131
824799160,15cyclictest0-21swapper/112:10:091
824799160,15cyclictest0-21swapper/111:55:131
824799160,15cyclictest0-21swapper/110:35:151
824799160,15cyclictest0-21swapper/110:25:011
824799160,15cyclictest0-21swapper/110:15:171
824799160,15cyclictest0-21swapper/110:00:211
824799160,15cyclictest0-21swapper/109:40:141
824799160,15cyclictest0-21swapper/108:31:241
8242991615,1cyclictest9-21ksoftirqd/009:00:340
8242991614,1cyclictest4792-21expr08:00:140
8242991614,1cyclictest0-21swapper/011:40:200
8242991614,1cyclictest0-21swapper/010:40:220
8242991614,1cyclictest0-21swapper/008:45:130
8242991614,1cyclictest0-21swapper/008:35:120
8242991614,1cyclictest0-21swapper/007:45:180
8242991613,2cyclictest6210-21latency10:50:150
8242991613,2cyclictest3461-21grep09:50:180
8242991613,2cyclictest19508-21sendmail_mailtr09:20:190
8242991613,2cyclictest19508-21sendmail_mailtr09:20:180
8242991613,2cyclictest14597-21fschecks_count10:10:150
824299161,14cyclictest0-21swapper/010:25:150
824299160,1cyclictest1372-21apache_processe07:55:130
824299160,1cyclictest0-21swapper/010:00:160
824299160,15cyclictest9-21ksoftirqd/008:30:140
824299160,15cyclictest7784-21awk11:50:180
824299160,15cyclictest3991-21H222:10:210
824299160,15cyclictest3981-21H222:10:210
824299160,15cyclictest31635-21grep07:50:150
824299160,15cyclictest26376-21if_err_lxdbr007:40:150
824299160,15cyclictest0-21swapper/011:05:170
824299160,15cyclictest0-21swapper/009:30:210
824299160,15cyclictest0-21swapper/008:15:220
824299160,15cyclictest0-21swapper/007:35:210
824299160,15cyclictest0-21swapper/007:25:100
824799150,1cyclictest0-21swapper/111:35:141
824299150,1cyclictest0-21swapper/012:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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