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2026-07-31 - 05:14
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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 Jul 31, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
919899250,6cyclictest19265-21fschecks_count00:10:181
919899230,5cyclictest0-21swapper/100:39:351
9202992218,3cyclictest24388-21awk19:35:192
920299220,21cyclictest843-21systemd-network20:43:362
920299207,12cyclictest0-21swapper/220:55:152
920299200,3cyclictest0-21swapper/223:13:122
920299192,3cyclictest0-21swapper/223:25:222
919899192,16cyclictest15977-21cpuspeed_turbos21:15:161
9198991917,1cyclictest0-21swapper/100:00:161
919399190,1cyclictest0-21swapper/019:45:240
9202991816,1cyclictest0-21swapper/220:35:082
9202991815,2cyclictest9741-21/usr/sbin/munin23:55:132
9202991815,2cyclictest7157-21cpuspeed_turbos23:50:132
9202991815,2cyclictest17682-21timerwakeupswit22:10:212
9202991815,2cyclictest14959-21/usr/sbin/munin19:20:132
9202991815,2cyclictest13548-21cut20:15:012
9202991814,3cyclictest0-21swapper/220:05:142
920299181,2cyclictest32523-21timerandwakeup20:45:212
920299181,16cyclictest12823-21munin-plugin-st21:10:002
920299180,17cyclictest823-21grep21:45:142
920299180,17cyclictest8135-21cron22:55:012
920299180,16cyclictest3979-21H222:10:212
920299180,16cyclictest13966-21proc_pri00:00:212
919899182,15cyclictest16295-21memory00:05:191
9198991816,1cyclictest21-21ksoftirqd/123:15:211
9198991816,1cyclictest0-21swapper/123:05:011
9198991815,2cyclictest23643-21chrt00:19:371
9198991815,2cyclictest1163-21needreboot22:40:171
9198991815,2cyclictest1163-21needreboot22:40:161
919899180,3cyclictest1351-21lxd21:50:511
919899180,3cyclictest1351-21lxd21:50:511
9193991816,1cyclictest28227-21idleruntime21:35:160
9193991816,1cyclictest0-21swapper/023:40:180
9193991816,1cyclictest0-21swapper/022:48:000
9193991815,2cyclictest31887-21sh00:35:000
9193991814,3cyclictest28004-21lxd20:54:510
919399181,2cyclictest20877-21nfsd423:15:190
919399180,17cyclictest7000-21wc21:55:140
9202991715,1cyclictest9799-21cat22:00:142
9202991715,1cyclictest4289-21/usr/sbin/munin23:45:122
9202991715,1cyclictest0-21swapper/221:15:162
9202991714,2cyclictest4238-21/usr/sbin/munin21:50:192
9202991714,2cyclictest4238-21/usr/sbin/munin21:50:182
9202991714,2cyclictest3414-21master21:55:072
9202991714,2cyclictest27533-21fschecks_time00:25:162
9202991714,2cyclictest20406-21/usr/sbin/munin19:30:142
9202991714,2cyclictest15752-21cat00:05:142
9202991713,2cyclictest0-21swapper/219:10:182
9202991711,5cyclictest0-21swapper/223:08:292
920299170,2cyclictest331-21taskset23:37:552
920299170,2cyclictest32460-21cpuspeed_turbos00:35:132
920299170,2cyclictest29442-21/usr/sbin/munin22:35:112
920299170,2cyclictest27627-21cpuspeed_turbos21:35:152
920299170,2cyclictest21188-21pzem_energy23:15:222
920299170,2cyclictest17709-21apache_processe19:25:112
920299170,2cyclictest1521-21lxd00:18:362
920299170,2cyclictest13825-21ntp_kernel_pll_22:05:202
920299170,16cyclictest863-21avahi-daemon21:30:232
920299170,16cyclictest7372-21apache_accesses21:00:132
920299170,16cyclictest2876-21dpkg22:45:122
920299170,16cyclictest26071-21awk00:20:222
920299170,16cyclictest2549-21ntpq20:50:172
920299170,16cyclictest20562-21smtpd22:17:032
920299170,16cyclictest20562-21smtpd22:17:032
920299170,16cyclictest20173-21kernelversion20:25:172
920299170,16cyclictest19014-21expr00:10:182
920299170,16cyclictest19010-21latency_hist20:25:022
920299170,16cyclictest1856-21systemd-udevd19:56:512
920299170,16cyclictest1377-21lxd21:26:502
920299170,16cyclictest13727-21/usr/sbin/munin20:15:122
920299170,16cyclictest13522-21nfsd419:15:192
920299170,16cyclictest13178-21cat23:00:272
920299170,16cyclictest1235-21netstat22:40:172
920299170,16cyclictest1235-21netstat22:40:162
920299170,16cyclictest10892-21perf23:00:002
9198991714,2cyclictest8426-21ntp_states23:50:171
9198991714,2cyclictest5480-21needreboot23:45:171
9198991714,2cyclictest3981-21H222:10:211
9198991714,2cyclictest27174-21apt-get20:40:001
9198991714,2cyclictest23798-21munin-run22:25:011
9198991714,2cyclictest11222-21ps23:55:211
9198991714,1cyclictest0-21swapper/123:25:211
9198991713,3cyclictest8496-21pzem21:55:201
9198991713,3cyclictest0-21swapper/100:25:151
919899171,15cyclictest144072sleep119:18:381
919899170,2cyclictest5950-21nfsd420:55:191
919899170,2cyclictest32474-21threads20:45:211
919899170,2cyclictest31345-21fschecks_time23:35:141
919899170,2cyclictest30922-21expr00:30:181
919899170,2cyclictest2866-21apache_volume22:45:111
919899170,2cyclictest23880-21http_loadtime19:35:161
919899170,2cyclictest22613-21tune2fs20:30:141
919899170,2cyclictest10191-21cat21:05:131
919899170,16cyclictest8713-21cpuspeed_turbos22:55:151
919899170,16cyclictest24486-21expr22:25:131
919899170,16cyclictest22111-21irqstats21:25:171
919899170,16cyclictest2180-21cut19:55:021
919899170,16cyclictest21672-21cut19:30:191
919899170,16cyclictest20270-21sed20:25:181
919899170,16cyclictest18351-21nvmesmart_nvme023:10:191
919899170,16cyclictest15501-21apt-key22:10:011
919899170,16cyclictest15353-21ls19:20:141
919899170,16cyclictest1523-21lxd23:30:351
9193991715,1cyclictest18574-21cpuspeed_turbos21:20:140
9193991715,1cyclictest0-21swapper/000:05:000
9193991714,2cyclictest910-21latency00:35:170
9193991714,2cyclictest24438-21cpuspeed_turbos21:30:130
9193991714,2cyclictest2345-21apache_volume19:55:130
9193991714,2cyclictest20951-21turbostat.cron00:15:010
9193991714,2cyclictest15249-21apache_accesses00:05:130
9193991714,2cyclictest1522-21lxd23:10:510
9193991714,2cyclictest14254-21cstates20:15:140
9193991714,2cyclictest12463-21apache_volume22:05:120
9193991714,2cyclictest1100-21snmpd21:05:020
9193991713,3cyclictest0-21swapper/021:47:300
919399170,2cyclictest9382-21nfsd420:05:180
919399170,2cyclictest32160-21cat19:50:120
919399170,2cyclictest32071-21awk20:45:170
919399170,2cyclictest30854-21ntp_states22:35:180
919399170,2cyclictest30627-21/usr/sbin/munin23:35:100
919399170,2cyclictest30464-21grep21:40:140
919399170,2cyclictest24461-21expr22:25:140
919399170,2cyclictest22559-21cupsd23:30:160
919399170,2cyclictest1526-21lxd21:50:510
919399170,2cyclictest1526-21lxd21:50:500
919399170,2cyclictest14584-21sendmail19:20:000
919399170,1cyclictest0-21swapper/022:23:360
919399170,1cyclictest0-21swapper/021:26:000
919399170,16cyclictest7381-21apt-get21:00:130
919399170,16cyclictest5847-21apache_processe22:50:100
919399170,16cyclictest5215-21irqstats23:45:160
919399170,16cyclictest27988-21/usr/sbin/munin20:40:120
919399170,16cyclictest26858-21apache_volume00:25:140
919399170,16cyclictest25805-21fschecks_time23:25:160
919399170,16cyclictest23009-21memory20:30:170
919399170,16cyclictest19995-21cron19:30:010
919399170,16cyclictest16347-21df_inode22:10:140
919399170,16cyclictest1403-21nfsd422:40:180
919399170,16cyclictest1403-21nfsd422:40:180
919399170,16cyclictest13745-21idleruntime21:10:170
919399170,16cyclictest12447-21cut00:00:000
919399170,16cyclictest10389-21sed22:55:230
919399170,16cyclictest10338-21grep22:00:160
9202991614,1cyclictest3450-21gsd-color19:50:162
9202991614,1cyclictest0-21swapper/222:30:162
9202991614,1cyclictest0-21swapper/221:40:132
9202991613,2cyclictest24106-21grep22:25:132
9202991613,2cyclictest18482-21apache_processe21:20:112
9202991613,2cyclictest0-21swapper/219:45:182
920299160,1cyclictest28192-21timerandwakeup19:40:202
920299160,15cyclictest29177-21expr23:30:182
920299160,15cyclictest23129-21/usr/sbin/munin23:20:152
920299160,15cyclictest12990-21apache_accesses21:10:122
920299160,15cyclictest0-21swapper/222:20:122
920299160,15cyclictest0-21swapper/220:30:122
920299160,15cyclictest0-21swapper/220:00:182
920299160,15cyclictest0-21swapper/200:30:142
9198991614,2cyclictest0-21swapper/121:35:171
9198991614,1cyclictest9729-21apache_accesses22:00:111
9198991614,1cyclictest0-21swapper/122:35:131
9198991614,1cyclictest0-21swapper/122:30:131
9198991614,1cyclictest0-21swapper/121:40:151
9198991614,1cyclictest0-21swapper/121:30:131
9198991614,1cyclictest0-21swapper/121:20:141
9198991614,1cyclictest0-21swapper/121:10:131
9198991614,1cyclictest0-21swapper/120:50:031
9198991614,1cyclictest0-21swapper/120:01:411
9198991614,1cyclictest0-21swapper/119:45:131
919899160,2cyclictest9119-21latency20:05:161
919899160,1cyclictest0-21swapper/122:15:161
919899160,1cyclictest0-21swapper/122:15:151
919899160,1cyclictest0-21swapper/121:45:111
919899160,1cyclictest0-21swapper/119:25:181
919899160,15cyclictest7956-21/usr/sbin/munin21:00:161
919899160,15cyclictest455-21plymouthd20:20:111
919899160,15cyclictest455-21plymouthd20:15:131
919899160,15cyclictest25623-21apt-get19:40:021
919899160,15cyclictest22899-21ls23:20:141
919899160,15cyclictest14054-21apt-get23:05:151
919899160,15cyclictest0-21swapper/122:50:181
919899160,15cyclictest0-21swapper/120:40:121
919899160,15cyclictest0-21swapper/119:55:151
919899160,15cyclictest0-21swapper/119:12:451
919899160,15cyclictest0-21swapper/100:20:151
9193991614,1cyclictest11110-21grep20:10:130
9193991614,1cyclictest0-21swapper/023:20:110
9193991614,1cyclictest0-21swapper/023:05:180
9193991614,1cyclictest0-21swapper/022:30:110
9193991614,1cyclictest0-21swapper/022:15:210
9193991614,1cyclictest0-21swapper/022:15:200
9193991614,1cyclictest0-21swapper/020:35:140
9193991614,1cyclictest0-21swapper/020:20:140
9193991614,1cyclictest0-21swapper/019:30:240
9193991614,1cyclictest0-21swapper/019:20:180
919399160,2cyclictest19916-21fschecks_time20:25:140
919399160,1cyclictest0-21swapper/021:15:160
919399160,1cyclictest0-21swapper/000:20:150
919399160,15cyclictest23161-21dpkg19:35:120
919399160,15cyclictest21866-21expr00:15:130
919399160,15cyclictest10429-21grep19:10:160
919399160,15cyclictest0-21swapper/023:00:120
919399160,15cyclictest0-21swapper/020:00:120
919399160,15cyclictest0-21swapper/019:40:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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