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2026-03-27 - 14:03
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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 27, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1025992214,5cyclictest0-21swapper/221:10:172
102599210,4cyclictest13582-21cstates23:40:142
1019992017,2cyclictest1652-21expr19:10:131
1015992017,2cyclictest3053-21systemd-logind20:08:520
1015992012,4cyclictest0-21swapper/022:50:140
102599192,16cyclictest0-21swapper/223:07:002
1025991914,3cyclictest0-21swapper/200:20:272
102599190,16cyclictest4035-21H222:10:212
101999193,1cyclictest17785-21timerandwakeup23:45:211
101999190,16cyclictest32534-21tr20:05:161
1015991917,1cyclictest0-21swapper/022:58:400
1015991917,1cyclictest0-21swapper/020:02:290
1015991916,2cyclictest426-21systemd-udevd23:24:520
1015991913,3cyclictest0-21swapper/020:50:170
1015991913,3cyclictest0-21swapper/020:50:170
101599190,18cyclictest0-21swapper/021:48:490
101599190,0cyclictest0-21swapper/020:27:040
102599182,1cyclictest0-21swapper/223:04:592
102599182,15cyclictest27974-21latency22:00:162
102599182,15cyclictest0-21swapper/220:10:012
102599181,16cyclictest2675-21nfsd419:10:182
102599180,3cyclictest13229-21proc_pri22:40:192
102599180,17cyclictest948-21anvil21:05:322
102599180,17cyclictest31956-21sendmail-mta00:10:452
102599180,17cyclictest29902-21ntp_states20:55:192
102599180,15cyclictest0-21swapper/223:33:592
101999182,15cyclictest22156-21grep21:40:121
101999182,15cyclictest0-21swapper/121:52:341
1019991816,1cyclictest0-21swapper/122:05:001
1019991816,1cyclictest0-21swapper/100:35:091
1019991815,2cyclictest22958-21munin-plugin-st20:45:001
101999181,16cyclictest18554-21grep22:50:161
101999180,17cyclictest3979-21H222:10:211
101999180,17cyclictest3979-21H222:10:211
101999180,17cyclictest19735-21strings21:35:181
101599182,15cyclictest9971-21nfsd420:20:190
1015991816,1cyclictest9-21ksoftirqd/000:10:450
1015991814,3cyclictest5884-21nvmesmart_nvme019:15:250
1015991814,3cyclictest30417-21munin-plugin-st22:10:000
101599181,1cyclictest4035-21H222:10:210
101599181,16cyclictest22152-21http_loadtime19:45:160
101599180,3cyclictest16755-21snapd19:50:180
1025991714,2cyclictest7749-21cut00:25:212
1025991714,2cyclictest3414-21master20:34:432
1025991714,2cyclictest32435-21tr22:20:172
1025991714,2cyclictest31613-21bounce22:17:442
1025991714,2cyclictest19892-21sed23:50:162
1025991714,2cyclictest17572-21expr22:50:122
102599171,15cyclictest236522sleep219:49:052
102599170,2cyclictest5613-21sed22:30:012
102599170,2cyclictest4625-21grep20:10:182
102599170,2cyclictest399-20systemd-journal23:10:022
102599170,2cyclictest3979-21H222:10:212
102599170,2cyclictest24374-21grep20:45:192
102599170,2cyclictest2241-21cat23:20:122
102599170,2cyclictest21797-21apt-config21:40:002
102599170,2cyclictest18675-21cpuspeed_turbos21:35:132
102599170,2cyclictest12861-21munin-plugin-st21:25:002
102599170,2cyclictest12049-21switchtime23:35:192
102599170,1cyclictest0-21swapper/221:00:462
102599170,16cyclictest8120-21python322:35:012
102599170,16cyclictest6349-21fschecks_count22:30:162
102599170,16cyclictest6275-21awk23:25:172
102599170,16cyclictest4435-21/usr/sbin/munin19:15:122
102599170,16cyclictest3979-21H222:10:212
102599170,16cyclictest31184-21wc20:00:192
102599170,16cyclictest24622-21expr00:00:142
102599170,16cyclictest16018-21/usr/sbin/munin23:45:202
102599170,16cyclictest15905-21smartctl22:45:192
102599170,16cyclictest14570-21processes21:25:192
102599170,16cyclictest12893-21awk00:35:182
102599170,16cyclictest1079-21cups-browsed20:15:222
102599170,16cyclictest10222-21cat21:20:012
1019991716,1cyclictest0-21swapper/120:56:111
1019991715,1cyclictest16748-21snapd22:10:541
1019991714,2cyclictest9587-21/usr/sbin/munin00:30:151
1019991714,2cyclictest9010-21grep23:30:181
1019991714,2cyclictest6780-21munin-run19:20:001
1019991714,2cyclictest3985-21H222:10:211
1019991714,2cyclictest3981-21H222:10:211
1019991714,2cyclictest3692-21cat20:10:131
1019991714,2cyclictest25837-21mailstats00:00:241
1019991714,2cyclictest11053-21cron20:25:001
1019991714,2cyclictest10387-21/usr/sbin/munin23:35:191
101999171,15cyclictest9868-21sed22:35:171
101999170,2cyclictest7419-21tr19:20:121
101999170,2cyclictest3983-21H222:10:211
101999170,2cyclictest3983-21H222:10:211
101999170,2cyclictest3981-21H222:10:211
101999170,2cyclictest3709-21qmgr19:51:341
101999170,2cyclictest19712-21apt-config20:40:021
101999170,16cyclictest993-21dbus-daemon00:20:211
101999170,16cyclictest863-21avahi-daemon20:00:201
101999170,16cyclictest4936-21/usr/sbin/munin23:25:121
101999170,16cyclictest4545-21sendmail_mailqu22:25:221
101999170,16cyclictest31200-21expr00:10:161
101999170,16cyclictest28371-21rm23:10:011
101999170,16cyclictest25110-21latency_hist23:05:011
101999170,16cyclictest20093-21cpuspeed_turbos22:55:131
101999170,16cyclictest19921-21nfsd419:40:181
101999170,16cyclictest16830-21snapd22:49:491
101999170,16cyclictest16793-21snapd23:52:481
101999170,16cyclictest12395-21/usr/sbin/munin20:25:161
101999170,16cyclictest12325-21expr22:40:141
101999170,15cyclictest0-21swapper/120:45:191
1015991715,1cyclictest27561-21entropy00:05:160
1015991715,1cyclictest0-21swapper/023:05:210
1015991715,1cyclictest0-21swapper/000:30:220
1015991714,2cyclictest8509-21cron00:30:010
1015991714,2cyclictest426-21systemd-udevd23:44:520
1015991714,2cyclictest29312-21if_enp1s020:55:150
1015991714,2cyclictest2069-21systemd-udevd19:42:520
1015991714,2cyclictest11753-21ntpq21:20:190
1015991713,2cyclictest0-21swapper/019:25:130
101599171,2cyclictest15945-21lxd19:36:040
1015991712,4cyclictest3991-21H222:10:210
101599170,2cyclictest3985-21H222:10:210
101599170,2cyclictest3985-21H222:10:210
101599170,2cyclictest25411-21taskset21:50:120
101599170,2cyclictest23617-21kernelversion23:00:160
101599170,2cyclictest20625-21expr20:40:150
101599170,2cyclictest17181-21nfsd421:30:170
101599170,2cyclictest11734-21grep00:35:120
101599170,16cyclictest570-21timerandwakeup21:00:210
101599170,16cyclictest455-21plymouthd00:00:130
101599170,16cyclictest31028-21perf22:15:010
101599170,16cyclictest2872-21systemd-logind23:32:510
101599170,16cyclictest27353-21expr19:55:120
101599170,16cyclictest24342-21grep20:45:180
101599170,16cyclictest19881-21grep21:35:180
101599170,16cyclictest16744-21snapd00:20:290
101599170,16cyclictest1521-21lxd23:50:340
101599170,16cyclictest10542-21tr23:35:120
101599170,16cyclictest0-21swapper/022:22:440
101599170,16cyclictest0-21swapper/020:35:190
1025991615,1cyclictest4035-21H222:10:212
1025991614,1cyclictest0-21swapper/223:55:242
1025991614,1cyclictest0-21swapper/223:55:232
1025991614,1cyclictest0-21swapper/223:15:132
1025991614,1cyclictest0-21swapper/222:11:332
1025991614,1cyclictest0-21swapper/220:50:142
1025991614,1cyclictest0-21swapper/220:50:142
1025991614,1cyclictest0-21swapper/219:40:202
1025991614,1cyclictest0-21swapper/219:30:172
1025991614,1cyclictest0-21swapper/200:30:182
1025991613,2cyclictest7192-21/usr/sbin/munin19:20:102
1025991613,2cyclictest3414-21master21:47:452
1025991613,2cyclictest11545-21/usr/sbin/munin20:25:142
102599160,2cyclictest15908-21cpuspeed_turbos19:35:152
102599160,1cyclictest20164-21dpkg20:40:022
102599160,15cyclictest24864-21smartctl19:50:162
102599160,15cyclictest15827-21apt-get21:30:122
102599160,15cyclictest0-21swapper/222:00:002
102599160,15cyclictest0-21swapper/221:50:472
102599160,15cyclictest0-21swapper/220:20:152
102599160,15cyclictest0-21swapper/219:55:132
102599160,15cyclictest0-21swapper/219:25:002
1019991614,1cyclictest26726-21cut22:00:011
1019991614,1cyclictest1642-21switchtime22:20:231
1019991614,1cyclictest0-21swapper/121:30:181
1019991614,1cyclictest0-21swapper/121:25:121
1019991614,1cyclictest0-21swapper/121:13:491
1019991614,1cyclictest0-21swapper/119:50:001
1019991614,1cyclictest0-21swapper/119:35:151
1019991614,1cyclictest0-21swapper/119:25:131
1019991613,2cyclictest3954-21VM22:10:211
1019991613,2cyclictest1618-21nfsd400:15:181
101999161,14cyclictest0-21swapper/120:15:161
101999160,1cyclictest13919-21fschecks_count23:40:141
101999160,1cyclictest0-21swapper/121:05:131
101999160,15cyclictest4607-21sed23:24:591
101999160,15cyclictest32243-21cat23:15:161
101999160,15cyclictest14053-21latency19:30:161
101999160,15cyclictest11772chrt21:04:411
101999160,15cyclictest0-21swapper/123:05:141
101999160,15cyclictest0-21swapper/122:30:151
101999160,15cyclictest0-21swapper/121:20:181
101999160,15cyclictest0-21swapper/121:17:161
1015991614,1cyclictest0-21swapper/023:15:180
1015991614,1cyclictest0-21swapper/022:30:230
1015991614,1cyclictest0-21swapper/021:55:070
1015991614,1cyclictest0-21swapper/021:05:150
1015991614,1cyclictest0-21swapper/020:30:200
1015991614,1cyclictest0-21swapper/000:15:120
101599160,2cyclictest1813-21expr19:10:140
101599160,1cyclictest3981-21H222:10:210
101599160,1cyclictest28550-21apt-config23:10:010
101599160,1cyclictest0-21swapper/021:40:170
101599160,1cyclictest0-21swapper/021:25:120
101599160,1cyclictest0-21swapper/021:15:120
101599160,15cyclictest8709-21gpgv22:35:010
101599160,15cyclictest6305-21ntpq21:10:180
101599160,15cyclictest5998-21find20:15:130
101599160,15cyclictest5208-21cstates23:25:110
101599160,15cyclictest2906-21cpuspeed_turbos22:25:140
101599160,15cyclictest2872-21systemd-logind20:12:510
101599160,15cyclictest27498-21expr22:00:130
101599160,15cyclictest0-21swapper/023:45:120
101599160,15cyclictest0-21swapper/022:40:130
101599160,15cyclictest0-21swapper/019:30:140
1019991514,1cyclictest0-21swapper/121:49:381
101999150,1cyclictest0-21swapper/122:15:361
101999140,0cyclictest0-21swapper/122:05:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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