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2026-07-07 - 11:07
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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 Tue Jul 07, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25774992727,0cyclictest0-21swapper/222:20:142
25773992716,11cyclictest0-21swapper/121:28:131
25774992320,2cyclictest10206-21acpi23:30:122
2577499225,13cyclictest0-21swapper/223:01:122
25774992214,3cyclictest30661-21sort23:09:002
2577499220,18cyclictest0-21swapper/219:46:072
2577399220,0cyclictest0-21swapper/122:25:171
2577299220,4cyclictest0-21swapper/020:38:170
25774992115,3cyclictest0-21swapper/220:24:272
2577499210,3cyclictest0-21swapper/221:29:062
2577499206,13cyclictest0-21swapper/223:46:182
25774992018,1cyclictest0-21swapper/219:38:292
25774992016,3cyclictest22825-21apt-get22:00:012
25774992016,3cyclictest0-21swapper/222:05:002
25773992017,2cyclictest3053-21systemd-logind19:14:521
25772992015,4cyclictest385-21needreboot20:20:180
2577299201,17cyclictest399-20systemd-journal20:09:000
2577499199,5cyclictest0-21swapper/219:40:132
2577499193,15cyclictest20183-21cat21:55:002
2577499193,15cyclictest0-21swapper/219:20:512
2577499193,15cyclictest0-21swapper/200:17:172
25774991917,1cyclictest0-21swapper/222:55:012
25774991917,1cyclictest0-21swapper/221:32:262
25774991916,2cyclictest14257-21postgres00:36:192
25774991916,1cyclictest0-21swapper/221:24:582
25774991915,3cyclictest0-21swapper/223:42:492
25774991915,3cyclictest0-21swapper/222:05:572
25774991915,3cyclictest0-21swapper/220:16:412
25774991915,3cyclictest0-21swapper/220:04:412
2577499191,17cyclictest0-21swapper/200:30:202
2577499190,18cyclictest26342-21latency_hist00:00:012
2577499190,16cyclictest30683-21grep21:15:142
25773991917,1cyclictest27012-21expr00:00:111
2577399190,18cyclictest843-21systemd-network22:57:351
2577399190,18cyclictest0-21swapper/121:31:051
2577399190,16cyclictest0-21swapper/121:24:001
2577299192,2cyclictest27111-21cut21:10:010
2577299192,16cyclictest0-21swapper/021:25:200
25772991917,1cyclictest0-21swapper/023:22:370
25772991917,1cyclictest0-21swapper/021:44:330
25774991816,1cyclictest0-21swapper/200:10:132
25774991816,1cyclictest0-21swapper/200:10:132
25774991815,2cyclictest12463-21processes22:35:182
25774991815,2cyclictest0-21swapper/223:10:142
25774991815,1cyclictest0-21swapper/219:53:342
25774991814,3cyclictest29164-21latency_hist19:20:012
25774991813,4cyclictest0-21swapper/220:34:112
25774991813,3cyclictest0-21swapper/220:38:202
2577499180,1cyclictest0-21swapper/200:00:112
2577499180,17cyclictest27089-21latency_hist21:10:002
2577499180,17cyclictest16657-21cstates20:50:142
2577499180,17cyclictest10151-21lxd23:20:352
2577499180,15cyclictest0-21swapper/220:26:422
2577399183,1cyclictest0-21swapper/119:35:141
2577399182,15cyclictest0-21swapper/123:20:291
25773991816,1cyclictest28141-21if_enp1s021:10:181
25773991816,1cyclictest28141-21if_enp1s021:10:171
25773991816,1cyclictest0-21swapper/119:34:111
25773991814,3cyclictest455-21plymouthd23:10:121
25773991814,3cyclictest20901-21munin-run23:50:001
25773991814,3cyclictest1829-21systemd-journal19:55:011
25773991814,3cyclictest0-21swapper/119:40:151
2577399181,3cyclictest0-21swapper/100:05:141
2577299182,1cyclictest0-21swapper/021:34:090
25772991816,1cyclictest22563-21awk23:50:170
25772991816,1cyclictest0-21swapper/022:37:420
25772991816,1cyclictest0-21swapper/022:02:350
25772991814,3cyclictest30819-21nfsd419:20:210
2577299181,16cyclictest8154-21date22:30:010
2577299181,16cyclictest17996-21grep19:55:150
2577299180,3cyclictest28763-21find22:09:010
2577299180,3cyclictest15734-21grep19:50:140
2577299180,2cyclictest15133-21nfsd422:40:180
2577299180,2cyclictest0-21swapper/020:40:180
25774991715,1cyclictest0-21swapper/222:30:152
25774991715,1cyclictest0-21swapper/222:25:132
25774991714,2cyclictest4715-21awk19:30:192
25774991714,2cyclictest32642-21cstates19:25:142
25774991714,2cyclictest26359-21grep20:10:122
25774991714,2cyclictest23557-21ls22:55:212
25774991714,2cyclictest23431-21cpuspeed_turbos20:05:142
25774991714,2cyclictest23144-21grep23:50:212
25774991714,2cyclictest21712-21apache_accesses21:00:122
25774991714,2cyclictest19409-21ls20:55:162
25774991714,2cyclictest15145-21grep21:45:132
25774991714,2cyclictest13123-21tr23:35:132
25774991713,3cyclictest32680-21sort22:15:162
2577499171,15cyclictest11093-21expr20:40:142
2577499170,2cyclictest9417-21apache_processe21:35:142
2577499170,2cyclictest7502-21grep23:25:162
2577499170,2cyclictest1966-21expr23:15:142
2577499170,2cyclictest18215-21expr19:55:152
2577499170,16cyclictest9874-21missed_timers00:25:182
2577499170,16cyclictest6749-21wget00:20:142
2577499170,16cyclictest29756-21expr22:10:122
2577499170,16cyclictest28338-21cat21:10:192
2577499170,16cyclictest28338-21cat21:10:182
2577499170,16cyclictest17136-21expr22:45:132
2577499170,16cyclictest14315-21cstates22:40:132
2577499170,16cyclictest14145-21fschecks_count20:45:152
2577499170,16cyclictest13366-21grep21:40:182
2577399172,1cyclictest0-21swapper/123:50:161
25773991714,2cyclictest8770-21nfsd423:25:201
25773991714,2cyclictest32494-21expr19:25:141
25773991714,2cyclictest30782-21pzem_current22:10:171
25773991714,2cyclictest29055-21grep23:05:141
25773991714,2cyclictest26392-21apache_accesses22:05:111
25773991714,2cyclictest26152-21apache_volume20:10:121
25773991714,2cyclictest24040-21apache_processe23:55:131
25773991714,2cyclictest23438-21cpuspeed_turbos20:05:141
25773991714,2cyclictest20137-21cat22:50:121
25773991714,2cyclictest19706-21users21:50:211
25773991714,1cyclictest0-21swapper/122:35:171
25773991714,1cyclictest0-21swapper/119:17:381
25773991713,3cyclictest0-21swapper/119:20:591
2577399171,2cyclictest845-21grep20:20:211
2577399171,15cyclictest258542sleep122:03:371
2577399171,15cyclictest16051-21tr23:40:121
2577399171,15cyclictest0-21swapper/100:10:171
2577399171,15cyclictest0-21swapper/100:10:161
2577399170,2cyclictest26569-21cut23:00:171
2577399170,2cyclictest2069-21systemd-udevd21:46:521
2577399170,2cyclictest16245-21apache_processe20:50:121
2577399170,2cyclictest12894-21df21:40:141
2577399170,2cyclictest10717-21grep21:35:211
2577399170,16cyclictest8467-21tr22:30:141
2577399170,16cyclictest5110-21cron22:25:011
2577399170,16cyclictest3976-21H222:10:211
2577399170,16cyclictest31975-21/usr/sbin/munin22:15:151
2577399170,16cyclictest30963-21irqstats21:15:161
2577399170,16cyclictest24444-21apache_volume21:05:121
2577399170,16cyclictest14814-21munin-plugin-st19:50:001
2577399170,16cyclictest13504-21apache_accesses20:45:131
2577399170,16cyclictest11327-21expr20:40:141
2577399170,16cyclictest1085-21gdbus23:35:211
25772991715,1cyclictest18548-21latency_hist20:55:010
25772991715,1cyclictest0-21swapper/021:04:000
25772991714,2cyclictest9613-21grep19:40:140
25772991714,2cyclictest455-21plymouthd21:35:250
25772991714,2cyclictest28399-21grep23:05:130
25772991714,2cyclictest28004-21lxd00:00:360
25772991714,2cyclictest25975-21cstates23:00:140
25772991714,2cyclictest21106-21sed23:50:000
25772991714,2cyclictest18665-21chrt22:46:290
25772991714,2cyclictest13509-21apache_volume20:45:140
25772991714,2cyclictest10687-21expr23:30:130
25772991714,2cyclictest0-21swapper/022:30:190
25772991714,1cyclictest0-21swapper/020:30:180
2577299171,2cyclictest4854-21readlink00:15:200
2577299171,1cyclictest0-21swapper/021:17:590
2577299171,15cyclictest19130-21grep21:50:180
2577299170,2cyclictest7580-21/usr/sbin/munin23:25:150
2577299170,2cyclictest6028-21cpu00:20:110
2577299170,2cyclictest3572-21expr19:30:130
2577299170,2cyclictest22083-21munin-run22:55:000
2577299170,2cyclictest1839-21/usr/sbin/munin00:10:220
2577299170,2cyclictest1839-21/usr/sbin/munin00:10:210
2577299170,1cyclictest0-21swapper/020:51:180
2577299170,16cyclictest30135-21/usr/sbin/munin22:10:130
2577299170,16cyclictest29309-21expr20:15:130
2577299170,16cyclictest29186-21perf19:20:000
2577299170,16cyclictest2912-21munin-run21:25:000
2577299170,16cyclictest27935-21awk21:10:150
2577299170,16cyclictest27935-21awk21:10:150
2577299170,16cyclictest2428-21/usr/sbin/munin22:20:190
2577299170,16cyclictest22843-21expr22:55:170
2577299170,16cyclictest16311-21cstates23:40:140
2577299170,16cyclictest15785-21cat23:40:010
2577299170,16cyclictest15054-21apache_accesses21:45:110
2577299170,16cyclictest14751-21latency_hist19:50:000
2577299170,16cyclictest11926-21expr00:30:150
2577499160,15cyclictest263702chrt19:14:232
25773991614,1cyclictest20539-21apt-get20:00:121
25773991614,1cyclictest17763-21/usr/sbin/munin19:55:141
25773991614,1cyclictest0-21swapper/121:55:121
25773991614,1cyclictest0-21swapper/100:25:141
2577399160,1cyclictest3981-21H222:10:211
2577399160,1cyclictest22422-21hddtemp_smartct21:00:161
2577399160,1cyclictest0-21swapper/120:15:161
2577399160,1cyclictest0-21swapper/100:15:161
2577399160,15cyclictest7868-21apache_processe20:35:121
2577399160,15cyclictest7828-21timerandwakeup00:20:201
2577399160,15cyclictest19487-21expr20:55:151
2577399160,15cyclictest16638-21apache_accesses22:45:111
2577399160,15cyclictest12624-21grep00:30:181
2577399160,15cyclictest1-21systemd20:30:171
2577399160,15cyclictest0-21swapper/123:15:131
2577399160,15cyclictest0-21swapper/122:40:171
2577399160,15cyclictest0-21swapper/120:25:161
25772991614,1cyclictest0-21swapper/023:10:130
25772991614,1cyclictest0-21swapper/000:40:000
25772991614,1cyclictest0-21swapper/000:05:140
25772991613,2cyclictest26457-21cstates20:10:140
25772991613,2cyclictest20515-21apache_volume21:55:130
2577299160,2cyclictest32686-21fschecks_time22:15:150
2577299160,1cyclictest0-21swapper/020:26:290
2577299160,1cyclictest0-21swapper/000:25:150
2577299160,15cyclictest6691-21apache_volume19:35:120
2577299160,15cyclictest32336-21apache_volume19:25:130
2577299160,15cyclictest24019-21/usr/sbin/munin23:55:120
2577299160,15cyclictest20794-21cstates20:00:130
2577299160,15cyclictest0-21swapper/023:15:210
2577299160,15cyclictest0-21swapper/019:12:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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