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2026-06-24 - 18:33
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Jun 24, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7648992915,8cyclictest23761-21seq07:38:020
765899252,18cyclictest0-21swapper/211:14:172
765899250,24cyclictest28-21ksoftirqd/207:10:212
765899250,24cyclictest28-21ksoftirqd/207:10:212
765899240,23cyclictest0-21swapper/211:30:012
7648992414,6cyclictest0-21swapper/007:56:000
7658992323,0cyclictest28-21ksoftirqd/207:34:072
765899230,22cyclictest0-21swapper/211:40:042
765899230,22cyclictest0-21swapper/210:49:042
764899235,14cyclictest9-21ksoftirqd/011:33:490
764899231,21cyclictest4007-21switchtime09:50:210
764899230,2cyclictest23103-21expr09:30:140
764899230,22cyclictest18038-21expr11:15:140
764899230,22cyclictest13512-21if_enp1s008:15:160
764899230,22cyclictest0-21swapper/008:20:150
764899230,1cyclictest0-21swapper/009:25:180
765899225,15cyclictest0-21swapper/207:38:282
7658992222,0cyclictest0-21swapper/210:57:002
765899220,22cyclictest28-21ksoftirqd/211:30:442
765899220,21cyclictest0-21swapper/210:43:002
765899220,21cyclictest0-21swapper/210:27:522
765899220,21cyclictest0-21swapper/209:42:022
765899220,1cyclictest28-21ksoftirqd/212:22:332
765399220,18cyclictest0-21swapper/109:03:291
764899222,1cyclictest5985-21taskset10:52:160
764899222,19cyclictest0-21swapper/008:45:140
7648992214,7cyclictest20678-21timerandwakeup07:30:210
7648992214,7cyclictest12651-21expr11:05:130
764899220,2cyclictest13143-21sed07:20:010
764899220,21cyclictest23979-21apt-get08:35:140
764899220,21cyclictest18396-21mv08:25:010
764899220,21cyclictest17296-21sed07:25:170
764899220,16cyclictest5602-21cut09:00:010
764899220,14cyclictest0-21swapper/010:40:410
765899212,18cyclictest0-21swapper/210:12:182
7658992121,0cyclictest0-21swapper/211:57:472
765899210,21cyclictest0-21swapper/210:32:122
7653992111,0cyclictest0-21swapper/112:05:541
7648992114,6cyclictest127872sleep012:04:490
7648992114,6cyclictest0-21swapper/010:55:110
7648992114,2cyclictest3450-21gsd-color12:25:510
7648992114,1cyclictest0-21swapper/011:51:380
7648992114,0cyclictest0-21swapper/012:30:390
7648992114,0cyclictest0-21swapper/012:05:230
7648992114,0cyclictest0-21swapper/011:27:570
7648992114,0cyclictest0-21swapper/010:29:200
7648992114,0cyclictest0-21swapper/010:23:120
7648992113,1cyclictest0-21swapper/009:05:220
7648992113,1cyclictest0-21swapper/008:53:310
7648992113,1cyclictest0-21swapper/008:05:150
764899210,2cyclictest15507-21ls11:10:130
764899210,20cyclictest17510-21df09:20:150
764899210,20cyclictest0-21swapper/012:20:010
764899210,20cyclictest0-21swapper/011:20:170
764899210,20cyclictest0-21swapper/010:45:200
764899210,20cyclictest0-21swapper/010:31:140
764899210,16cyclictest993-21dbus-daemon11:38:590
764899210,16cyclictest11437-21/usr/sbin/munin09:10:110
764899210,16cyclictest1048-21sed09:45:210
764899210,15cyclictest0-21swapper/012:35:120
764899210,15cyclictest0-21swapper/011:40:170
765899205,14cyclictest28-21ksoftirqd/210:06:482
765899200,20cyclictest0-21swapper/211:52:172
765899200,0cyclictest0-21swapper/212:16:202
765399203,16cyclictest3053-21systemd-logind11:16:521
7653992010,10cyclictest0-21swapper/111:58:461
7648992014,5cyclictest0-21swapper/010:15:120
7648992014,5cyclictest0-21swapper/007:40:150
7648992014,1cyclictest7646-21cyclictest07:20:150
7648992014,0cyclictest0-21swapper/011:55:160
7648992014,0cyclictest0-21swapper/010:35:290
7648992013,1cyclictest0-21swapper/008:00:140
7648992012,2cyclictest22195-21latency08:30:160
7648992012,1cyclictest0-21swapper/010:10:190
764899200,1cyclictest0-21swapper/011:45:210
764899200,19cyclictest0-21swapper/012:20:000
764899200,19cyclictest0-21swapper/011:00:210
764899200,19cyclictest0-21swapper/009:35:230
764899200,15cyclictest14882-21smartctl09:15:150
764899200,15cyclictest12080-21pzem_energy10:05:200
764899200,14cyclictest0-21swapper/012:13:580
765899192,3cyclictest0-21swapper/209:50:142
765899191,1cyclictest28-21ksoftirqd/208:20:142
765899190,15cyclictest0-21swapper/211:38:042
765399192,16cyclictest0-21swapper/107:55:451
7653991917,1cyclictest0-21swapper/110:08:161
7653991916,2cyclictest993-21dbus-daemon12:20:201
7653991916,2cyclictest27297-21expr08:40:131
765399191,17cyclictest0-21swapper/111:36:431
765399190,18cyclictest29979-21cron10:40:001
765399190,18cyclictest0-21swapper/109:48:141
7648991913,2cyclictest7937-21/usr/sbin/munin07:10:160
7648991913,2cyclictest7937-21/usr/sbin/munin07:10:160
7648991912,1cyclictest30655-21expr07:50:130
764899190,14cyclictest0-21swapper/009:59:430
764899190,14cyclictest0-21swapper/009:00:100
765899182,15cyclictest0-21swapper/211:22:262
7658991816,1cyclictest271rcuc/209:25:162
7658991816,1cyclictest2021-21cpu11:45:122
7658991816,1cyclictest0-21swapper/211:06:002
7658991815,2cyclictest31929-21perf08:50:002
765899181,2cyclictest2150-21chrt08:52:452
765899181,2cyclictest15021-21taskset08:19:532
765899181,16cyclictest28398-21date07:45:152
765899181,16cyclictest11421-21cut12:00:172
765899180,17cyclictest25070-21wc08:35:192
765899180,15cyclictest0-21swapper/209:20:232
7653991816,2cyclictest0-21swapper/111:33:061
7653991816,2cyclictest0-21swapper/108:38:091
7653991816,1cyclictest0-21swapper/107:32:461
7653991815,2cyclictest9871-21munin-run08:10:011
7653991814,3cyclictest870-21systemd-logind11:01:521
765399181,16cyclictest0-21swapper/108:10:141
7653991811,3cyclictest0-21swapper/107:10:181
7653991811,3cyclictest0-21swapper/107:10:181
765399180,2cyclictest2007-21systemd-journal08:18:281
765399180,17cyclictest3976-21H222:10:211
765399180,17cyclictest23453-21ntpq10:25:171
765399180,17cyclictest0-21swapper/111:30:011
765399180,15cyclictest0-21swapper/112:15:161
7648991813,0cyclictest0-21swapper/009:40:120
7648991812,2cyclictest28210-21cat07:45:130
765899172,1cyclictest28-21ksoftirqd/212:36:332
7658991715,1cyclictest28-21ksoftirqd/208:40:172
7658991715,1cyclictest271rcuc/209:10:122
7658991715,1cyclictest0-21swapper/212:30:132
7658991715,1cyclictest0-21swapper/207:40:172
7658991714,2cyclictest7943-21tr10:00:132
7658991714,2cyclictest695-21apt-key07:55:022
7658991714,2cyclictest19674-21expr10:20:132
7658991714,2cyclictest18513-21/usr/sbin/munin08:25:132
7658991714,2cyclictest16887-21idleruntime12:10:152
7658991713,3cyclictest17792-21cpuspeed_turbos11:15:142
7658991712,4cyclictest0-21swapper/211:00:142
765899171,1cyclictest28-21ksoftirqd/207:16:432
765899171,1cyclictest25813-21tr09:35:152
765899171,1cyclictest0-21swapper/209:15:172
765899171,15cyclictest271rcuc/209:55:142
765899171,15cyclictest26709-21chrt12:25:332
765899171,15cyclictest0-21swapper/212:05:192
765899171,15cyclictest0-21swapper/209:00:102
765899171,15cyclictest0-21swapper/208:10:122
765899170,2cyclictest7173-21tr08:05:152
765899170,2cyclictest28-21ksoftirqd/210:35:012
765899170,16cyclictest9949-21ntp_states09:05:192
765899170,16cyclictest455-21plymouthd10:52:202
765899170,16cyclictest32403-21if_eno109:45:152
765899170,16cyclictest30730-21expr07:50:132
765899170,16cyclictest2749-21/usr/sbin/munin08:55:102
765899170,16cyclictest271rcuc/208:00:142
765899170,16cyclictest23333-21expr09:30:142
765899170,16cyclictest21227-21/usr/sbin/munin08:30:112
765899170,16cyclictest16336-21gpgv10:15:012
765899170,16cyclictest14349-21cut07:20:162
7653991715,1cyclictest0-21swapper/109:35:231
7653991714,2cyclictest7359-21sed10:55:131
7653991714,2cyclictest3576-21nfsd411:45:171
7653991714,2cyclictest31643-21nfsd410:40:171
7653991714,2cyclictest21823-21df08:30:131
7653991714,2cyclictest18089-21apache208:25:011
7653991714,2cyclictest17859-21switchtime07:25:201
7653991714,2cyclictest17167-21df10:15:131
7653991714,2cyclictest1559-21sh10:45:141
7653991714,2cyclictest13421-21/usr/sbin/munin10:10:111
7653991714,2cyclictest11659-21grep09:10:131
7653991714,2cyclictest1079-21cups-browsed12:00:231
765399170,3cyclictest20777-21tune2fs09:25:131
765399170,2cyclictest4023-21PluginScanner09:41:451
765399170,2cyclictest3976-21H222:10:211
765399170,2cyclictest30573-21latency08:45:171
765399170,2cyclictest19465-21cpuspeed_turbos10:20:131
765399170,16cyclictest7830-21apache_volume10:00:111
765399170,16cyclictest5057-21/usr/sbin/munin09:55:141
765399170,16cyclictest30676-21cat12:35:121
765399170,16cyclictest27721-21cpuspeed_turbos07:45:131
765399170,16cyclictest25393-21taskset07:40:171
765399170,16cyclictest20844-21expr11:20:131
765399170,16cyclictest19142-21anvil09:23:471
765399170,16cyclictest14501-21snapd09:53:211
765399170,16cyclictest14159-21apache_volume09:15:121
765399170,16cyclictest10746-21smtpd09:08:451
765399170,16cyclictest1060-21thermald11:14:071
7658991615,1cyclictest28-21ksoftirqd/207:25:162
7653991614,1cyclictest16134-21/usr/sbin/munin12:10:101
7653991614,1cyclictest0-21swapper/107:15:131
7653991613,2cyclictest4703-21if_enp1s010:50:161
765399160,2cyclictest4410-21expr08:00:141
765399160,15cyclictest31831-21/usr/sbin/munin11:40:141
765399160,15cyclictest25959-21nfsd412:25:171
765399160,15cyclictest25539-21/usr/sbin/munin10:30:161
765399160,15cyclictest1-21systemd07:50:111
765399160,15cyclictest12108-21apt-get11:05:121
765399160,15cyclictest0-21swapper/112:30:151
765399160,15cyclictest0-21swapper/109:30:141
765399160,15cyclictest0-21swapper/108:50:131
765399160,15cyclictest0-21swapper/108:25:121
765399160,15cyclictest0-21swapper/107:24:411
765399150,1cyclictest0-21swapper/107:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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