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2026-01-07 - 15:37
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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 Wed Jan 07, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
820999270,21cyclictest19628-21chrt09:21:422
820799260,25cyclictest0-21swapper/009:00:130
820999250,0cyclictest0-21swapper/210:25:172
8209992414,9cyclictest16640-21http_loadtime08:20:162
820999238,1cyclictest0-21swapper/207:20:122
820999232,1cyclictest0-21swapper/207:53:522
8209992320,2cyclictest8536-21cpuspeed_turbos11:55:142
8209992317,5cyclictest0-21swapper/208:45:182
8209992314,8cyclictest27945-21fschecks_time10:35:162
8209992314,8cyclictest22553-21cat12:20:132
820999230,5cyclictest0-21swapper/207:15:002
820999230,2cyclictest32532-21if_enp1s011:40:132
820999230,22cyclictest21395-21idleruntime11:20:172
8209992217,4cyclictest0-21swapper/210:50:142
8209992214,7cyclictest4346-21chrt08:55:152
8209992214,7cyclictest29290-21expr11:35:112
8209992214,7cyclictest0-21swapper/210:30:222
820999221,16cyclictest28719-21missed_timers12:30:162
820999220,2cyclictest7820-21grep09:00:182
820999220,2cyclictest562-21sed12:40:002
820999220,2cyclictest12089-21/usr/sbin/munin09:10:212
820999220,21cyclictest0-21swapper/211:00:202
820999220,21cyclictest0-21swapper/211:00:202
820999220,1cyclictest0-21swapper/212:25:132
820999220,1cyclictest0-21swapper/209:55:152
820999220,16cyclictest20025-21bounce11:17:382
820999220,15cyclictest0-21swapper/211:10:012
820999220,15cyclictest0-21swapper/210:06:452
8209992114,6cyclictest27469-21/usr/sbin/munin08:40:142
8209992114,6cyclictest26583-21expr11:30:122
8209992114,6cyclictest0-21swapper/209:50:132
8209992114,6cyclictest0-21swapper/209:15:182
8209992114,6cyclictest0-21swapper/209:15:182
8209992114,1cyclictest0-21swapper/209:05:142
8209992114,1cyclictest0-21swapper/208:40:002
8209992113,2cyclictest1571-21sed09:50:012
8209992113,1cyclictest0-21swapper/209:30:162
8209992113,1cyclictest0-21swapper/209:25:222
8209992112,2cyclictest22587-21awk08:30:172
820999211,1cyclictest0-21swapper/211:46:502
820999210,2cyclictest20026-21irqstats10:20:172
820999210,2cyclictest12742-21cron08:19:552
820999210,20cyclictest0-21swapper/212:15:132
820999210,20cyclictest0-21swapper/211:25:202
820999210,20cyclictest0-21swapper/208:55:012
820999210,20cyclictest0-21swapper/208:00:012
820999210,1cyclictest1929-21grep10:45:192
820999210,1cyclictest0-21swapper/212:10:162
820999210,1cyclictest0-21swapper/212:05:152
820999210,1cyclictest0-21swapper/210:45:012
820999210,1cyclictest0-21swapper/210:00:132
820999210,1cyclictest0-21swapper/208:25:162
820999210,1cyclictest0-21swapper/207:30:162
820999210,16cyclictest17737-21/usr/sbin/munin10:15:182
820999210,15cyclictest0-21swapper/209:35:142
820999210,14cyclictest0-21swapper/210:55:152
820799213,3cyclictest0-21swapper/011:22:060
8209992016,3cyclictest0-21swapper/207:45:092
8209992014,5cyclictest14790-21needreboot10:10:172
8209992014,5cyclictest0-21swapper/212:00:212
8209992013,6cyclictest12540-21grep07:15:192
8209992013,2cyclictest25450-21awk07:40:132
8209992013,1cyclictest0-21swapper/207:56:302
8209992013,0cyclictest0-21swapper/211:50:152
820999200,19cyclictest0-21swapper/211:05:152
820999200,14cyclictest0-21swapper/207:35:162
820999200,14cyclictest0-21swapper/207:27:162
820999200,0cyclictest0-21swapper/208:11:402
820899202,17cyclictest0-21swapper/110:50:011
820999190,1cyclictest0-21swapper/208:05:132
8208991917,1cyclictest0-21swapper/111:10:001
8208991917,1cyclictest0-21swapper/107:25:141
8208991916,1cyclictest0-21swapper/108:05:121
8207991916,2cyclictest17143-21nfsd408:20:180
8207991913,3cyclictest0-21swapper/011:03:000
8207991913,3cyclictest0-21swapper/011:03:000
820799190,5cyclictest0-21swapper/012:14:440
820799190,15cyclictest0-21swapper/010:11:100
8209991812,1cyclictest0-21swapper/209:40:172
820899183,1cyclictest0-21swapper/107:32:291
820899182,15cyclictest31535-21grep10:40:171
820899182,15cyclictest19846-21chrt11:15:221
820899182,15cyclictest0-21swapper/110:00:461
8208991815,2cyclictest25925-21latency_hist11:30:001
8208991815,1cyclictest0-21swapper/112:10:001
8208991814,3cyclictest0-21swapper/107:20:151
8208991813,3cyclictest3286-21nfsd409:50:171
820899181,2cyclictest9452-21kernelversion07:10:181
820899181,16cyclictest10216-21timerwakeupswit11:55:211
820899181,15cyclictest0-21swapper/109:33:221
820899180,3cyclictest0-21swapper/109:36:431
8207991816,1cyclictest9-21ksoftirqd/011:15:190
8207991815,1cyclictest27774-21perf07:45:010
820799181,2cyclictest24353-21grep09:30:170
820899178,5cyclictest22469-21cut10:25:151
8208991715,1cyclictest263522chrt07:40:181
8208991715,1cyclictest0-21swapper/112:00:211
8208991715,1cyclictest0-21swapper/110:35:131
8208991714,2cyclictest9798-21cat09:05:141
8208991714,2cyclictest934-21cstates08:50:131
8208991714,2cyclictest5632-21apache_accesses11:50:111
8208991714,2cyclictest5150-21expr09:55:141
8208991714,2cyclictest4099-21H222:10:211
8208991714,2cyclictest3991-21H222:10:211
8208991714,2cyclictest29596-21idleruntime11:35:131
8208991714,2cyclictest28236-21chrt11:32:521
8208991714,2cyclictest2540-21grep07:55:181
8208991714,2cyclictest24629-21tr10:30:141
8208991714,2cyclictest22348-21cpuspeed_turbos12:20:131
8208991714,2cyclictest20290-21/usr/sbin/munin09:25:201
8208991714,2cyclictest18716-21cpuspeed_turbos08:25:141
8208991714,2cyclictest18313-21vmstat10:15:211
8208991714,2cyclictest17879-21expr09:20:131
8208991714,2cyclictest13796-21grep10:10:131
8208991713,3cyclictest0-21swapper/111:40:111
820899171,2cyclictest26194-21cut08:35:211
820899171,15cyclictest0-21swapper/110:50:171
820899170,2cyclictest20327-21nfsd410:20:181
820899170,16cyclictest6651-21tr09:00:131
820899170,16cyclictest4972-21cut08:55:191
820899170,16cyclictest455-21plymouthd12:25:151
820899170,16cyclictest28733-21awk08:40:191
820899170,16cyclictest1551-21snapd10:55:091
820899170,16cyclictest15152-21/usr/sbin/munin11:10:131
820899170,16cyclictest13918-21ls08:15:171
820899170,16cyclictest12378-21ls09:10:151
820799172,1cyclictest0-21swapper/007:52:300
8207991715,1cyclictest0-21swapper/010:43:350
8207991715,1cyclictest0-21swapper/007:34:480
8207991714,2cyclictest8834-21nfsd410:00:170
8207991714,2cyclictest870-21systemd-logind08:08:530
8207991714,2cyclictest6285-21fschecks_time11:50:140
8207991714,2cyclictest3961-21perf08:00:010
8207991714,2cyclictest2872-21systemd-logind11:06:510
8207991714,2cyclictest17666-21fschecks_count07:25:150
8207991714,2cyclictest10116-21sed11:55:210
8207991714,2cyclictest0-21swapper/012:35:170
8207991714,2cyclictest0-21swapper/009:35:140
8207991714,1cyclictest0-21swapper/007:15:160
820799171,1cyclictest0-21swapper/008:45:120
820799171,15cyclictest0-21swapper/008:50:130
820799170,2cyclictest7801-21ntp_offset10:55:200
820799170,2cyclictest6293-21nvmesmart_nvme009:55:200
820799170,2cyclictest30994-21munin-plugin-st09:45:000
820799170,2cyclictest301-21grep09:45:160
820799170,2cyclictest29670-21find10:39:010
820799170,2cyclictest28293-21fschecks_time12:30:130
820799170,2cyclictest28004-21lxd11:34:410
820799170,2cyclictest16708-21sed11:10:210
820799170,2cyclictest1521-21lxd09:18:420
820799170,2cyclictest1521-21lxd09:18:410
820799170,1cyclictest0-21swapper/012:25:490
820799170,16cyclictest25866-21grep08:35:180
820799170,16cyclictest20325-21grep09:25:140
820799170,16cyclictest18912-21nfsd409:20:170
820799170,16cyclictest13547-21latency_hist10:10:010
820799170,16cyclictest13298-21tr08:15:160
820799170,16cyclictest13157-21wc09:10:180
8208991614,1cyclictest10443-21cut11:00:171
8208991614,1cyclictest10443-21cut11:00:171
8208991614,1cyclictest0-21swapper/112:30:121
8208991614,1cyclictest0-21swapper/112:15:131
8208991614,1cyclictest0-21swapper/112:10:141
8208991614,1cyclictest0-21swapper/111:45:001
8208991614,1cyclictest0-21swapper/108:13:151
8208991614,1cyclictest0-21swapper/107:50:151
8208991613,2cyclictest22731-21awk08:30:171
8208991613,2cyclictest16334-21expr08:20:141
820899160,2cyclictest30962-21idleruntime08:45:151
820899160,1cyclictest455-21plymouthd08:00:021
820899160,15cyclictest30444-21cpuspeed_turbos12:35:131
820899160,15cyclictest22532-21/usr/sbin/munin07:35:171
820899160,15cyclictest15206-21expr09:15:151
820899160,15cyclictest15206-21expr09:15:151
820899160,15cyclictest11416-21fschecks_time10:05:171
820899160,15cyclictest0-21swapper/111:20:141
820899160,15cyclictest0-21swapper/109:40:171
820899160,15cyclictest0-21swapper/107:15:141
8207991614,1cyclictest455-21plymouthd10:50:170
8207991614,1cyclictest0-21swapper/012:15:130
8207991614,1cyclictest0-21swapper/011:40:310
8207991614,1cyclictest0-21swapper/011:35:150
8207991614,1cyclictest0-21swapper/010:45:180
8207991614,1cyclictest0-21swapper/010:25:120
8207991614,1cyclictest0-21swapper/010:20:140
8207991614,1cyclictest0-21swapper/008:40:150
8207991614,1cyclictest0-21swapper/008:30:200
8207991613,2cyclictest4155-21grep11:45:180
8207991613,2cyclictest11205-21idleruntime08:10:160
820799161,1cyclictest9-21ksoftirqd/008:00:010
820799160,2cyclictest12247-21/usr/sbin/munin12:00:170
820799160,2cyclictest0-21swapper/009:05:140
820799160,1cyclictest26579-21seq10:31:160
820799160,15cyclictest3987-21H222:10:210
820799160,15cyclictest25160-21ls11:25:210
820799160,15cyclictest22734-21grep07:35:150
820799160,15cyclictest22666-21expr12:20:130
820799160,15cyclictest0-21swapper/012:05:110
820799160,15cyclictest0-21swapper/008:55:140
820799160,15cyclictest0-21swapper/008:25:140
820799160,15cyclictest0-21swapper/007:45:140
820799160,15cyclictest0-21swapper/007:20:170
820799160,15cyclictest0-21swapper/007:10:150
820799150,15cyclictest0-21swapper/010:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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