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2026-06-26 - 08:17
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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 Jun 26, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16634992726,1cyclictest0-21swapper/123:50:141
16634992523,1cyclictest1100-21snmpd23:08:261
16634992414,5cyclictest0-21swapper/121:14:231
1663499236,16cyclictest0-21swapper/100:12:191
16634992313,0cyclictest0-21swapper/122:25:441
1663499224,10cyclictest0-21swapper/100:32:201
16634992213,0cyclictest0-21swapper/122:20:581
1663399220,18cyclictest0-21swapper/021:42:340
16635992113,6cyclictest30030-21fschecks_count20:30:152
16634992112,0cyclictest0-21swapper/122:46:061
1663399210,20cyclictest843-21systemd-network23:44:270
1663599200,4cyclictest0-21swapper/219:30:012
16634992015,4cyclictest0-21swapper/100:15:111
1663499200,0cyclictest0-21swapper/121:51:501
1663399204,15cyclictest0-21swapper/021:28:250
1663399202,17cyclictest0-21swapper/022:30:140
1663599192,16cyclictest27214-21cpuspeed_turbos22:20:142
16635991917,1cyclictest0-21swapper/223:01:422
1663599190,17cyclictest8805-21fschecks_time23:40:142
1663499192,16cyclictest0-21swapper/121:55:131
16634991917,1cyclictest0-21swapper/122:44:181
16634991915,3cyclictest0-21swapper/121:31:451
16634991910,0cyclictest0-21swapper/120:39:381
1663499190,5cyclictest0-21swapper/121:28:011
1663499190,4cyclictest15609-21expr22:55:151
1663499190,1cyclictest0-21swapper/123:31:431
1663499190,18cyclictest0-21swapper/122:09:501
16633991917,1cyclictest0-21swapper/023:22:460
1663599183,1cyclictest28-21ksoftirqd/221:29:102
16635991818,0cyclictest0-21swapper/223:47:042
16635991816,1cyclictest204452chrt20:10:282
16635991816,1cyclictest0-21swapper/200:31:192
16635991815,2cyclictest902-21if_eno122:30:162
16635991815,2cyclictest3987-21H222:10:212
16635991814,3cyclictest14504-21snapd00:17:282
16635991814,1cyclictest0-21swapper/222:25:222
1663599181,2cyclictest2872-21systemd-logind22:00:512
1663599181,16cyclictest32207-21cpuspeed_turbos20:35:142
1663599181,16cyclictest2069-21systemd-udevd00:20:512
1663599180,2cyclictest4099-21H222:10:212
1663599180,17cyclictest1856-21systemd-udevd23:38:512
1663599180,17cyclictest1789-21iwlist21:35:152
1663599180,16cyclictest9064-21gpgv22:45:022
1663499189,0cyclictest0-21swapper/100:37:141
1663499182,15cyclictest29578-21cpuspeed_turbos20:30:141
1663499182,15cyclictest24778-21awk23:10:181
1663499182,15cyclictest20014-21taskset23:02:241
16634991815,1cyclictest0-21swapper/120:00:191
16634991814,2cyclictest3989-21H222:10:211
16634991814,2cyclictest0-21swapper/119:25:011
16634991812,5cyclictest843-21systemd-network21:22:101
1663499181,16cyclictest14495-21snapd19:52:581
1663499180,17cyclictest16815-21grep20:05:171
1663399182,1cyclictest0-21swapper/000:06:180
1663399182,15cyclictest9-21ksoftirqd/022:40:350
1663399182,15cyclictest14222-21cpuspeed_turbos21:00:130
16633991815,2cyclictest32671-21chrt00:20:560
16633991814,3cyclictest3416-21qmgr00:28:350
1663399181,16cyclictest28004-21lxd20:30:480
1663399180,3cyclictest5413-21sshd22:38:180
1663399180,17cyclictest1829-21systemd-journal20:15:000
1663599172,1cyclictest28-21ksoftirqd/220:46:102
16635991716,1cyclictest28-21ksoftirqd/221:40:462
16635991715,1cyclictest3450-21gsd-color21:00:162
16635991715,1cyclictest208881nfsd419:15:182
16635991715,1cyclictest208881nfsd419:15:182
16635991715,1cyclictest0-21swapper/220:50:122
16635991714,2cyclictest8814-21timerwakeupswit21:45:222
16635991714,2cyclictest3989-21H222:10:212
16635991714,2cyclictest3983-21H222:10:212
16635991714,2cyclictest3976-21H222:10:212
16635991714,2cyclictest32385-21grep23:25:152
16635991714,2cyclictest29818-21cupsd23:20:552
16635991714,2cyclictest24155-21expr20:20:122
16635991714,2cyclictest15595-21/usr/sbin/munin20:05:122
16635991714,2cyclictest13021-21awk22:50:162
16635991714,2cyclictest11523-21cat20:55:132
16635991714,2cyclictest0-21swapper/223:05:032
1663599171,15cyclictest24400-21taskset00:07:052
1663599171,15cyclictest0-21swapper/221:50:192
1663599170,2cyclictest9173-21php7.000:39:002
1663599170,2cyclictest7500-21expr22:40:162
1663599170,2cyclictest14545-21snapd19:55:082
1663599170,2cyclictest1351-21lxd21:58:482
1663599170,2cyclictest1079-21cups-browsed22:10:202
1663599170,16cyclictest4869-21sed20:40:212
1663599170,16cyclictest4386-21cpuspeed_turbos19:45:122
1663599170,16cyclictest4035-21H222:10:212
1663599170,16cyclictest3985-21H222:10:212
1663599170,16cyclictest26308-21nfsd421:20:182
1663599170,16cyclictest26226-21/usr/sbin/munin23:15:222
1663599170,16cyclictest23788-21ntpq19:20:172
1663599170,16cyclictest21295-21switchtime21:10:212
1663599170,16cyclictest1667-21cstates19:40:132
1663599170,16cyclictest14504-21snapd22:05:282
1663499178,0cyclictest0-21swapper/121:18:021
16634991714,2cyclictest30688-21apache_volume00:20:131
16634991714,2cyclictest29266-21ntp_states19:30:171
16634991714,2cyclictest26283-21perf20:25:001
16634991714,2cyclictest26226-21/usr/sbin/munin23:15:191
16634991714,2cyclictest22184-21/usr/sbin/munin00:05:231
16634991714,2cyclictest11640-21expr20:55:121
16634991714,2cyclictest1114-21lldpd21:46:521
16634991714,2cyclictest10221-21sed20:50:201
16634991714,2cyclictest0-21swapper/120:15:181
16634991713,3cyclictest30599-21systemctl23:20:201
1663499170,2cyclictest901-21wc21:35:141
1663499170,2cyclictest3450-21gsd-color22:15:031
1663499170,2cyclictest3294-21expr20:40:121
1663499170,2cyclictest31060-21expr19:35:151
1663499170,2cyclictest2714-21systemctl00:25:211
1663499170,2cyclictest2419-21nfsd419:40:181
1663499170,2cyclictest19705-21expr00:00:181
1663499170,2cyclictest18205-21nfsd419:10:181
1663499170,2cyclictest17691-21taskset22:02:511
1663499170,2cyclictest12426-21cut23:45:211
1663499170,1cyclictest0-21swapper/122:50:021
1663499170,17cyclictest0-21swapper/123:59:131
1663499170,16cyclictest6581-21perf19:50:011
1663499170,16cyclictest3988-21H222:10:211
1663499170,16cyclictest3981-21H222:10:211
1663499170,16cyclictest28804-21seq20:27:401
1663499170,16cyclictest19951-21expr19:15:131
1663499170,16cyclictest19951-21expr19:15:131
1663499170,16cyclictest17291-21ls21:05:161
1663499170,16cyclictest14505-21snapd21:42:481
1663499170,16cyclictest0-21swapper/122:10:151
1663499170,15cyclictest0-21swapper/121:00:531
16633991716,1cyclictest9-21ksoftirqd/021:22:460
16633991715,1cyclictest17928-21grep23:00:120
16633991714,2cyclictest3707-21master20:35:100
16633991714,2cyclictest3450-21gsd-color00:30:170
16633991714,2cyclictest32550-21chrt21:31:000
16633991714,2cyclictest26730-21expr23:15:130
16633991714,2cyclictest26061-21cut23:15:010
16633991714,2cyclictest22361-21dpkg21:15:120
16633991714,2cyclictest21638-21chrt21:11:150
16633991714,2cyclictest176252sleep020:06:180
16633991714,2cyclictest15375-21munin-run22:00:010
16633991714,2cyclictest11687-21cat23:45:160
16633991714,1cyclictest0-21swapper/022:25:130
1663399171,1cyclictest0-21swapper/019:22:420
1663399171,15cyclictest25302-21latency22:15:180
1663399170,3cyclictest19684-21ntp_states22:05:200
1663399170,3cyclictest0-21swapper/022:50:180
1663399170,2cyclictest28004-21lxd23:52:360
1663399170,2cyclictest22869-21sed20:15:220
1663399170,2cyclictest15316-21sed20:05:010
1663399170,2cyclictest10945-21sed22:45:220
1663399170,2cyclictest10072-21systemctl20:50:200
1663399170,16cyclictest7370-21sshd23:38:120
1663399170,16cyclictest6655-21python319:50:020
1663399170,16cyclictest4109-21/usr/sbin/munin20:40:150
1663399170,16cyclictest28105-21smartctl20:25:180
1663399170,16cyclictest2007-21systemd-journal23:28:170
1663399170,16cyclictest19147-21latency_hist00:00:000
1663399170,16cyclictest18134-21grep21:05:200
1663399170,16cyclictest1756-21expr19:40:130
1663399170,16cyclictest1642-21grep21:35:140
1663399170,16cyclictest12152-21munin-run21:55:000
1663399170,16cyclictest0-21swapper/020:48:170
16635991614,1cyclictest3429-21missed_timers23:30:162
16635991614,1cyclictest0-21swapper/222:15:012
16635991614,1cyclictest0-21swapper/221:05:152
16635991614,1cyclictest0-21swapper/220:25:212
1663599160,2cyclictest7442-21ls19:50:142
1663599160,15cyclictest30551-21cut19:35:002
1663599160,15cyclictest22491-21expr21:15:142
1663599160,15cyclictest21784-21expr20:15:142
1663599160,15cyclictest13544-21/usr/sbin/munin23:50:112
1663599160,15cyclictest0-21swapper/222:55:152
1663599160,15cyclictest0-21swapper/222:35:132
1663599160,15cyclictest0-21swapper/219:10:172
1663599160,15cyclictest0-21swapper/200:10:142
16634991614,1cyclictest0-21swapper/123:40:101
1663499160,2cyclictest0-21swapper/122:30:151
1663499160,1cyclictest0-21swapper/123:35:151
1663499160,15cyclictest3321-21cstates22:35:131
1663499160,15cyclictest0-21swapper/120:45:161
1663499160,15cyclictest0-21swapper/119:25:131
16633991614,1cyclictest3983-21H222:10:210
16633991614,1cyclictest3450-21gsd-color00:00:230
16633991614,1cyclictest26617-21grep19:25:190
16633991614,1cyclictest0-21swapper/023:30:140
16633991614,1cyclictest0-21swapper/022:55:180
16633991614,1cyclictest0-21swapper/022:00:240
16633991614,1cyclictest0-21swapper/019:55:160
16633991614,1cyclictest0-21swapper/019:50:010
16633991614,1cyclictest0-21swapper/019:30:160
16633991613,2cyclictest12543-21nfsd420:55:160
1663399161,15cyclictest18259-21nfsd419:10:170
1663399160,2cyclictest20754-21cat19:15:180
1663399160,2cyclictest20754-21cat19:15:170
1663399160,1cyclictest0-21swapper/000:15:160
1663399160,15cyclictest7314-21expr00:35:130
1663399160,15cyclictest3450-21gsd-color23:05:020
1663399160,15cyclictest25963-21idleruntime00:10:160
1663399160,15cyclictest0-21swapper/022:10:120
1663399160,15cyclictest0-21swapper/021:45:000
1663399160,15cyclictest0-21swapper/020:20:140
1663399160,15cyclictest0-21swapper/019:35:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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