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2026-03-13 - 20:44
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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 Fri Mar 13, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15133992727,0cyclictest0-21swapper/009:23:110
15134992623,2cyclictest13922-21mii-tool09:00:161
15133992323,0cyclictest0-21swapper/012:00:130
1513599212,16cyclictest4243-21wc11:35:132
1513599210,18cyclictest0-21swapper/207:35:132
1513399212,17cyclictest0-21swapper/008:25:560
1513399212,17cyclictest0-21swapper/008:25:560
15133992121,0cyclictest0-21swapper/010:15:010
15133992121,0cyclictest0-21swapper/010:15:000
1513399210,5cyclictest0-21swapper/011:11:590
15134992014,5cyclictest843-21systemd-network09:26:121
15134992012,4cyclictest0-21swapper/110:25:011
1513399202,17cyclictest0-21swapper/009:10:000
15133992016,3cyclictest0-21swapper/007:11:240
1513399201,16cyclictest3991-21H222:10:210
1513399200,19cyclictest31955-21latency_hist09:35:010
1513399200,17cyclictest0-21swapper/011:35:010
15135991911,4cyclictest0-21swapper/211:54:382
1513599190,3cyclictest0-21swapper/209:10:172
1513599190,17cyclictest19947-21apache207:25:012
1513499192,16cyclictest3989-21H222:10:211
1513399193,1cyclictest31713-21awk11:25:170
1513399193,15cyclictest0-21swapper/008:20:000
1513399192,16cyclictest5632-21apt-key12:35:010
1513399192,16cyclictest3588-21sed09:40:010
15133991917,1cyclictest0-21swapper/010:35:130
15133991913,1cyclictest0-21swapper/009:55:200
1513399190,18cyclictest25219-21ntp_offset12:10:170
1513399190,18cyclictest15307-21nfsd408:05:170
1513399190,18cyclictest12766-21cat09:00:010
1513399190,16cyclictest14387-21nfsd409:00:180
1513599182,15cyclictest28-21ksoftirqd/211:17:542
1513599182,15cyclictest152962chrt09:03:422
1513599182,15cyclictest127492sleep210:50:342
1513599182,15cyclictest107482sleep207:57:592
15135991818,0cyclictest0-21swapper/208:45:162
15135991814,3cyclictest6046-21grep07:50:122
15135991814,3cyclictest2007-21systemd-journal09:56:582
15135991814,3cyclictest0-21swapper/208:50:412
15135991814,3cyclictest0-21swapper/208:50:412
1513599181,2cyclictest3351-21lxd09:26:422
1513599181,16cyclictest9643-21sshd11:45:012
1513599180,3cyclictest30212-21cron08:35:002
1513599180,2cyclictest3981-21H222:10:212
1513599180,17cyclictest3981-21H222:10:212
1513599180,15cyclictest0-21swapper/212:35:162
15134991815,2cyclictest16496-21chrt08:09:191
15134991815,2cyclictest15798-21cat07:10:131
15134991815,1cyclictest0-21swapper/108:36:141
15134991814,3cyclictest0-21swapper/111:05:191
15134991814,3cyclictest0-21swapper/109:10:201
15134991813,3cyclictest0-21swapper/109:58:161
1513499180,1cyclictest0-21swapper/109:40:011
1513499180,17cyclictest18910-21fschecks_time07:15:141
1513399182,15cyclictest8650-21cat12:40:000
1513399182,15cyclictest4991-21timerwakeupswit07:45:210
1513399182,15cyclictest36472sleep008:42:580
1513399182,15cyclictest12627-21cut11:50:000
1513399182,15cyclictest0-21swapper/011:40:020
1513399182,15cyclictest0-21swapper/010:07:360
1513399182,15cyclictest0-21swapper/008:45:140
15133991815,2cyclictest9880-21nfsd407:55:170
15133991815,2cyclictest27841-21nfsd412:15:170
15133991815,2cyclictest20539-21needreboot11:05:170
15133991813,4cyclictest843-21systemd-network11:16:200
1513399181,2cyclictest6886-21cstates09:45:150
1513399181,2cyclictest27007-21grep07:30:120
1513399181,16cyclictest23692-21cron07:25:010
1513399180,3cyclictest6249-21cstates07:50:120
1513399180,3cyclictest28358-21expr08:30:120
1513399180,3cyclictest13107-21perf10:55:000
1513399180,1cyclictest0-21swapper/012:05:120
1513399180,15cyclictest0-21swapper/011:55:130
15135991716,1cyclictest28-21ksoftirqd/212:25:592
15135991715,1cyclictest115182sleep209:54:522
15135991715,1cyclictest0-21swapper/211:00:132
15135991715,1cyclictest0-21swapper/210:36:052
15135991715,1cyclictest0-21swapper/208:35:142
15135991714,2cyclictest27960-21cpuspeed_turbos11:20:122
15135991714,2cyclictest25597-21expr08:25:142
15135991714,2cyclictest25597-21expr08:25:142
15135991714,2cyclictest22259-21/usr/sbin/munin11:10:152
15135991714,2cyclictest21727-21sed07:20:132
15135991714,2cyclictest19979-21expr08:15:132
15135991714,2cyclictest15377-21awk08:05:172
15135991714,2cyclictest10073-21cpu11:45:152
15135991713,3cyclictest863-21avahi-daemon09:35:182
1513599171,1cyclictest15701-21expr11:55:132
1513599171,15cyclictest0-21swapper/211:25:162
1513599170,2cyclictest4698-21irqstats09:40:162
1513599170,2cyclictest3754-21chrt08:44:202
1513599170,2cyclictest2286-21ntp_kernel_err11:30:172
1513599170,2cyclictest21943-21expr09:15:142
1513599170,2cyclictest20791-21ntp_states11:05:182
1513599170,2cyclictest16312-21expr09:05:132
1513599170,2cyclictest12724-21ntp_kernel_pll_08:00:172
1513599170,16cyclictest455-21plymouthd10:25:102
1513599170,16cyclictest3987-21H222:10:212
1513599170,16cyclictest31639-21grep12:25:002
1513599170,16cyclictest17934-21sort08:10:162
1513599170,16cyclictest15945-21lxd10:16:422
1513599170,16cyclictest1550-21snapd10:30:102
1513599170,16cyclictest1079-21cups-browsed08:20:192
15134991715,1cyclictest21-21ksoftirqd/112:06:091
15134991715,1cyclictest21-21ksoftirqd/111:41:001
15134991714,2cyclictest8431-21sed07:55:011
15134991714,2cyclictest5335-21latency08:45:171
15134991714,2cyclictest4478-21expr11:35:131
15134991714,2cyclictest3991-21H222:10:211
15134991714,2cyclictest3989-21H222:10:211
15134991714,2cyclictest3989-21H222:10:211
15134991714,2cyclictest3987-21H222:10:211
15134991714,2cyclictest3987-21H222:10:211
15134991714,2cyclictest27286-21expr07:30:131
15134991714,2cyclictest24784-21ls11:15:011
15134991714,2cyclictest16978-21needreboot09:05:171
15134991714,2cyclictest14880-21latency10:55:171
15134991714,2cyclictest1485-21snapd10:00:091
15134991714,2cyclictest13092-21apt-get10:55:001
15134991714,2cyclictest1114-21lldpd11:49:341
1513499171,15cyclictest18020-21load08:10:171
1513499171,15cyclictest0-21swapper/107:24:061
1513499170,2cyclictest4697-21find10:38:591
1513499170,2cyclictest24925-21proc_pri10:15:181
1513499170,2cyclictest24822-21latency12:10:151
1513499170,2cyclictest1085-21gdbus11:15:191
1513499170,16cyclictest7901-21munin-plugin-st10:45:011
1513499170,16cyclictest4047-21cat09:40:131
1513499170,16cyclictest3991-21H222:10:211
1513499170,16cyclictest29224-21proc_pri11:20:181
1513499170,16cyclictest25852-21fschecks_time08:25:151
1513499170,16cyclictest25852-21fschecks_time08:25:151
1513499170,16cyclictest24757-21/usr/sbin/munin07:25:151
1513499170,16cyclictest2201-21latency_hist12:30:001
1513499170,16cyclictest1551-21snapd12:30:081
1513499170,16cyclictest12044-21grep08:00:141
1513499170,16cyclictest10619-21expr08:55:141
1513399172,1cyclictest0-21swapper/011:52:430
15133991715,1cyclictest17582-21awk08:10:140
15133991714,2cyclictest8504-21expr10:45:130
15133991714,2cyclictest5402-21grep10:40:120
15133991714,2cyclictest31663-21apache_processe10:30:110
15133991714,2cyclictest28083-21expr11:20:120
15133991714,2cyclictest27174-21cstates09:25:130
15133991714,2cyclictest21295-21cstates07:20:110
15133991714,2cyclictest19395-21fschecks_time09:10:140
15133991714,2cyclictest19375-21grep07:15:170
15133991714,2cyclictest17615-21ls11:00:150
15133991713,3cyclictest32175-21cut12:25:140
1513399171,2cyclictest8671-21switchtime08:50:210
1513399171,2cyclictest8671-21switchtime08:50:200
1513399171,1cyclictest0-21swapper/011:35:150
1513399170,2cyclictest32369-21/usr/sbin/munin09:35:090
1513399170,2cyclictest31138-21cstates08:35:120
1513399170,2cyclictest21421-21/usr/sbin/munin09:15:150
1513399170,2cyclictest1481-21snapd08:20:090
1513399170,2cyclictest11724-21cstates08:00:120
1513399170,16cyclictest9987-21basename09:50:150
1513399170,16cyclictest32399-21/usr/sbin/munin07:40:110
1513399170,16cyclictest30397-21/usr/sbin/munin07:35:160
1513399170,16cyclictest29203-21/usr/sbin/munin10:25:120
1513399170,16cyclictest26796-21/usr/sbin/munin10:20:130
1513399170,16cyclictest254172sleep010:15:240
1513399170,16cyclictest14705-21apache_processe10:00:080
1513399170,16cyclictest14183-21cstates10:55:130
15135991614,1cyclictest0-21swapper/212:30:142
15135991614,1cyclictest0-21swapper/210:45:142
15135991614,1cyclictest0-21swapper/210:20:122
15135991614,1cyclictest0-21swapper/210:00:112
15135991614,1cyclictest0-21swapper/209:20:162
15135991614,1cyclictest0-21swapper/208:55:162
15135991613,2cyclictest4035-21H222:10:212
15135991613,2cyclictest26656-21ls12:15:132
15135991613,2cyclictest0-21swapper/212:10:122
1513599161,15cyclictest20711-21/usr/sbin/munin10:10:142
1513599161,15cyclictest20711-21/usr/sbin/munin10:10:142
1513599160,15cyclictest5864-21expr10:40:122
1513599160,15cyclictest3985-21H222:10:212
1513599160,15cyclictest29659-21dpkg09:30:112
1513599160,15cyclictest21331-21expr12:05:122
1513599160,15cyclictest14427-21expr10:55:132
1513599160,15cyclictest0-21swapper/210:05:132
1513599160,15cyclictest0-21swapper/209:45:192
1513599160,15cyclictest0-21swapper/207:30:142
15134991614,1cyclictest455-21plymouthd08:15:541
15134991614,1cyclictest0-21swapper/112:20:141
15134991614,1cyclictest0-21swapper/110:30:151
15134991614,1cyclictest0-21swapper/110:10:011
15134991614,1cyclictest0-21swapper/110:10:001
15134991614,1cyclictest0-21swapper/107:40:171
15134991613,2cyclictest30732-21cpuspeed_turbos11:25:131
15134991613,2cyclictest29623-21fschecks_time10:25:131
15134991613,2cyclictest22692-21cpuspeed_turbos08:20:121
1513499160,1cyclictest29702-21cpu09:30:131
1513499160,1cyclictest0-21swapper/111:50:141
1513499160,15cyclictest8783-21http_loadtime10:45:151
1513499160,15cyclictest7882-21ntp_kernel_err09:45:201
1513499160,15cyclictest27102-21expr12:15:131
1513499160,15cyclictest18686-21taskset11:01:221
1513499160,15cyclictest17586-21cpuspeed_turbos10:05:131
1513499160,15cyclictest1427-21cpuspeed_turbos08:40:131
1513499160,15cyclictest0-21swapper/112:35:131
1513499160,15cyclictest0-21swapper/112:00:151
1513499160,15cyclictest0-21swapper/109:50:121
1513499160,15cyclictest0-21swapper/109:20:171
1513499160,15cyclictest0-21swapper/108:30:191
1513499160,15cyclictest0-21swapper/107:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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