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2026-07-31 - 01:37
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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 all highest latencies:
System rackdslot0.osadl.org (updated Thu Jul 30, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2321099250,1cyclictest0-21swapper/008:35:140
2321299230,22cyclictest0-21swapper/212:15:462
2321299230,22cyclictest0-21swapper/212:15:462
2321199230,5cyclictest0-21swapper/107:54:511
23210992314,5cyclictest0-21swapper/009:50:010
2321299226,15cyclictest0-21swapper/209:34:162
23212992117,3cyclictest3053-21systemd-logind08:54:522
23212992117,3cyclictest3053-21systemd-logind08:54:522
2321099215,15cyclictest0-21swapper/010:50:170
2321299201,18cyclictest31849-21cpuspeed_turbos11:05:132
2321199203,16cyclictest14501-21snapd09:17:451
2321199203,16cyclictest14501-21snapd09:17:451
23212991917,1cyclictest0-21swapper/212:10:182
23212991915,2cyclictest28573-21nfsd411:55:182
2321099192,16cyclictest1596-21find11:08:590
23210991916,2cyclictest17430-21date10:40:010
23210991916,1cyclictest0-21swapper/011:51:250
23210991916,1cyclictest0-21swapper/011:51:250
23210991915,1cyclictest0-21swapper/008:25:150
23210991915,1cyclictest0-21swapper/008:25:150
2321099190,4cyclictest870-21systemd-logind08:50:050
2321099190,4cyclictest870-21systemd-logind08:50:050
2321099190,2cyclictest3983-21H222:10:210
2321299182,1cyclictest39582chrt08:29:412
2321299182,1cyclictest39582chrt08:29:402
2321299182,1cyclictest0-21swapper/209:50:192
23212991818,0cyclictest0-21swapper/208:20:142
23212991816,1cyclictest0-21swapper/212:02:252
2321299180,16cyclictest14495-21snapd09:56:582
2321299180,15cyclictest0-21swapper/207:17:292
2321199182,15cyclictest5777-21nfsd409:20:191
23211991816,1cyclictest21-21ksoftirqd/107:45:291
23211991816,1cyclictest0-21swapper/110:45:431
23211991815,2cyclictest13482-21nfsd412:25:151
23211991814,3cyclictest27529-21idleruntime-cro08:15:011
2321199181,16cyclictest28875-21sed10:00:171
2321199180,16cyclictest948-21apache208:25:001
23210991816,1cyclictest9125-21cat11:20:160
23210991816,1cyclictest17934-21needreboot07:55:170
23210991816,1cyclictest16347-21lspci08:49:330
23210991816,1cyclictest0-21swapper/007:19:420
23210991814,3cyclictest0-21swapper/008:13:400
2321099181,1cyclictest0-21swapper/007:24:550
2321099180,3cyclictest399-20systemd-journal12:12:160
2321099180,2cyclictest3981-21H222:10:210
2321099180,2cyclictest22107-21cat08:05:010
23212991716,1cyclictest0-21swapper/207:47:152
23212991715,1cyclictest0-21swapper/207:26:252
23212991714,2cyclictest7966-21processes10:20:192
23212991714,2cyclictest7480-21apt-get09:25:132
23212991714,2cyclictest7075-21perf09:25:012
23212991714,2cyclictest5989-21http_loadtime11:15:152
23212991714,2cyclictest5109-21ntp_states10:15:172
23212991714,2cyclictest3991-21H222:10:212
23212991714,2cyclictest3833-21/usr/sbin/munin11:10:192
23212991714,2cyclictest30452-21mailstats11:00:192
23212991714,2cyclictest26771-21mailstats08:10:212
23212991714,2cyclictest22222-21expr11:45:122
23212991714,2cyclictest19083-21pzem10:40:182
23212991714,2cyclictest18945-21chrt07:58:262
23212991714,2cyclictest1578-21cpuspeed_turbos09:15:132
23212991714,2cyclictest1578-21cpuspeed_turbos09:15:132
23212991714,2cyclictest15560-21find08:49:322
23212991714,2cyclictest14275-21postgres12:26:082
23212991714,2cyclictest11492-21ntpq08:40:192
23212991714,1cyclictest0-21swapper/210:25:182
2321299171,15cyclictest0-21swapper/210:56:412
2321299170,2cyclictest23194-21cpuspeed_turbos10:50:152
2321299170,2cyclictest22544-21cut08:05:122
2321299170,2cyclictest20008-21irqstats11:40:172
2321299170,2cyclictest13914-21chrt10:31:062
2321299170,16cyclictest843-21systemd-network11:53:382
2321299170,16cyclictest843-21systemd-network11:53:382
2321299170,16cyclictest455-21plymouthd07:22:172
2321299170,16cyclictest3987-21H222:10:212
2321299170,16cyclictest31451-21ntp_kernel_pll_10:05:182
2321299170,16cyclictest29351-21chrt10:01:042
2321299170,16cyclictest24432-21kernelversion07:10:162
2321299170,16cyclictest23979-21grep08:55:232
2321299170,16cyclictest2238-21/usr/sbin/munin12:05:222
2321299170,16cyclictest20980-21processes08:00:192
2321299170,16cyclictest20154-21nvmesmart_nvme009:45:212
2321299170,16cyclictest1856-21systemd-udevd08:34:522
2321299170,16cyclictest1594-21systemd08:36:522
2321299170,16cyclictest14132-21missed_timers09:35:172
2321299170,16cyclictest14017-21/usr/sbin/munin07:50:092
2321299170,16cyclictest10496-21munin-run11:25:002
2321299170,15cyclictest3450-21gsd-color07:38:532
23211991716,1cyclictest21-21ksoftirqd/112:10:401
23211991715,1cyclictest0-21swapper/110:09:011
23211991715,1cyclictest0-21swapper/109:52:091
23211991715,1cyclictest0-21swapper/108:03:461
23211991714,2cyclictest993-21dbus-daemon09:10:211
23211991714,2cyclictest6055-21perf10:20:011
23211991714,2cyclictest28900-21apache_volume11:00:101
23211991714,2cyclictest28847-21kernelversion08:15:161
23211991714,2cyclictest18555-21sort10:40:151
23211991714,2cyclictest17333-21perf12:35:001
23211991714,2cyclictest14224-21latency_hist10:35:001
23211991714,2cyclictest10703-21ls09:30:161
23211991714,1cyclictest3981-21H222:10:211
2321199171,15cyclictest4019-21processes11:10:191
2321199171,15cyclictest0-21swapper/108:00:001
2321199170,2cyclictest9766-21df10:25:121
2321199170,2cyclictest8002-21pzem_voltage10:20:201
2321199170,2cyclictest4485-21egrep08:30:151
2321199170,2cyclictest3983-21H222:10:211
2321199170,2cyclictest3979-21H222:10:211
2321199170,2cyclictest3979-21H222:10:211
2321199170,2cyclictest3979-21H222:10:211
2321199170,2cyclictest28817-21pzem_voltage11:55:191
2321199170,2cyclictest27718-21munin-run09:05:021
2321199170,2cyclictest26257-21expr10:55:111
2321199170,2cyclictest24754-21apt-key09:00:011
2321199170,2cyclictest2007-21systemd-journal08:36:081
2321199170,2cyclictest1817-21munin-run11:10:001
2321199170,2cyclictest16950-21idleruntime11:35:141
2321199170,2cyclictest14249-21grep09:35:171
2321199170,16cyclictest9788-21perf09:30:011
2321199170,16cyclictest5844-21df11:15:141
2321199170,16cyclictest3985-21H222:10:211
2321199170,16cyclictest24477-21expr09:55:141
2321199170,16cyclictest23220-21expr10:50:151
2321199170,16cyclictest17417-21ntp_states09:40:191
2321199170,16cyclictest16185-21pzem_power10:35:201
2321199170,16cyclictest15012-21sendmail_mailqu11:30:211
2321199170,16cyclictest1161-21apache211:44:081
2321199170,16cyclictest1078-21polkitd08:50:101
2321199170,16cyclictest1078-21polkitd08:50:101
2321199170,16cyclictest1051-21udisksd08:49:401
2321199170,16cyclictest10282-21grep08:40:141
23210991715,1cyclictest0-21swapper/011:56:030
23210991714,2cyclictest9483-21expr10:25:130
23210991714,2cyclictest3450-21gsd-color12:15:120
23210991714,2cyclictest3450-21gsd-color12:15:120
23210991714,2cyclictest32111-21appstreamcli07:25:010
23210991714,2cyclictest30988-21/usr/sbin/munin09:10:190
23210991714,2cyclictest23810-21expr07:10:130
23210991714,2cyclictest2379-21expr11:10:130
23210991714,2cyclictest0-21swapper/010:45:170
2321099171,15cyclictest8992-21latency_hist10:25:000
2321099170,2cyclictest408-21/usr/sbin/munin12:05:140
2321099170,2cyclictest3991-21H222:10:210
2321099170,2cyclictest3985-21H222:10:210
2321099170,2cyclictest3450-21gsd-color11:30:140
2321099170,2cyclictest22398-21cpuspeed_turbos08:55:140
2321099170,2cyclictest21384-21chrt11:44:570
2321099170,2cyclictest16194-21apache_accesses11:35:090
2321099170,2cyclictest13815-21/usr/sbin/munin12:25:170
2321099170,1cyclictest4099-21H222:10:210
2321099170,1cyclictest0-21swapper/009:35:180
2321099170,16cyclictest7439-21date09:25:010
2321099170,16cyclictest4162-21tr09:20:000
2321099170,16cyclictest4162-21tr09:20:000
2321099170,16cyclictest3869-21grep10:15:120
2321099170,16cyclictest3192-21latency_hist10:15:010
2321099170,16cyclictest31402-21ntp_kernel_pll_12:00:190
2321099170,16cyclictest30739-21egrep08:20:130
2321099170,16cyclictest29117-21cpuspeed_turbos11:00:130
2321099170,16cyclictest28961-21latency08:15:170
2321099170,16cyclictest28079-21munin-run11:00:000
2321099170,16cyclictest26500-21cron10:00:000
2321099170,16cyclictest22823-21expr08:05:140
2321099170,16cyclictest18956-21ntpq10:40:160
2321099170,16cyclictest17318-21nfsd409:40:180
2321099170,16cyclictest15588-21df12:30:130
2321099170,16cyclictest15517-21ps07:50:180
2321099170,16cyclictest1515-21lxd11:28:430
2321099170,16cyclictest12824-21irqstats10:30:170
2321099170,16cyclictest0-21swapper/009:50:190
23212991614,1cyclictest0-21swapper/212:35:092
23212991614,1cyclictest0-21swapper/212:30:122
23212991614,1cyclictest0-21swapper/210:49:492
23212991613,2cyclictest31012-21apache_volume09:10:122
2321299160,1cyclictest0-21swapper/210:10:132
2321299160,1cyclictest0-21swapper/209:40:202
2321299160,1cyclictest0-21swapper/207:30:172
2321299160,15cyclictest9613-21cpuspeed_turbos12:20:122
2321299160,15cyclictest16194-21apache_accesses11:35:102
2321299160,15cyclictest13483-21cpu11:30:132
2321299160,15cyclictest11310-21df11:25:142
2321299160,15cyclictest0-21swapper/209:00:052
2321299160,15cyclictest0-21swapper/207:40:172
23211991614,1cyclictest793-21cat12:05:131
23211991614,1cyclictest21-21ksoftirqd/108:25:011
23211991614,1cyclictest21-21ksoftirqd/108:25:011
23211991614,1cyclictest0-21swapper/112:20:121
23211991614,1cyclictest0-21swapper/111:45:151
23211991614,1cyclictest0-21swapper/111:25:141
23211991614,1cyclictest0-21swapper/107:40:181
23211991613,2cyclictest3707-21master09:47:051
23211991613,2cyclictest26360-21cut07:15:131
2321199160,2cyclictest29148-21grep07:20:131
2321199160,1cyclictest0-21swapper/109:05:171
2321199160,15cyclictest8613-21fschecks_count11:20:121
2321199160,15cyclictest6657-21cstates12:15:121
2321199160,15cyclictest6657-21cstates12:15:121
2321199160,15cyclictest32002-21apt-key07:25:011
2321199160,15cyclictest30005-21/usr/sbin/munin12:00:161
2321199160,15cyclictest2065-21ntp_states10:10:181
2321199160,15cyclictest0-21swapper/112:35:141
23210991614,1cyclictest0-21swapper/009:25:150
23210991614,1cyclictest0-21swapper/007:45:180
23210991613,2cyclictest23760-21users11:45:190
2321099160,2cyclictest29584-21proc_pri09:05:200
2321099160,2cyclictest10183-21sendmail_mailtr07:40:200
2321099160,2cyclictest0-21swapper/010:00:000
2321099160,15cyclictest8722-21apt-get12:20:010
2321099160,15cyclictest11728-21switchtime08:40:220
2321099160,15cyclictest0-21swapper/009:00:030
2321099160,15cyclictest0-21swapper/008:30:150
2321099160,15cyclictest0-21swapper/007:35:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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