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2026-08-05 - 11:25
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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 Aug 05, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15291992222,0cyclictest21-21ksoftirqd/120:57:111
15291992221,1cyclictest0-21swapper/121:05:211
1529199220,21cyclictest870-21systemd-logind23:51:511
15291992121,0cyclictest21-21ksoftirqd/123:25:561
15291992121,0cyclictest21-21ksoftirqd/100:27:011
15291992121,0cyclictest0-21swapper/123:19:461
15291992121,0cyclictest0-21swapper/123:13:001
15291992121,0cyclictest0-21swapper/122:58:501
15291992121,0cyclictest0-21swapper/121:58:281
15291992120,1cyclictest0-21swapper/123:04:321
15291992120,0cyclictest21-21ksoftirqd/121:43:111
15291992120,0cyclictest21-21ksoftirqd/121:43:101
15291992120,0cyclictest0-21swapper/122:10:231
15291992120,0cyclictest0-21swapper/121:54:451
15287992119,1cyclictest1100-21snmpd22:34:310
15287992117,3cyclictest29724-21fschecks_time00:20:160
1529699204,15cyclictest0-21swapper/223:40:142
1529199206,0cyclictest21-21ksoftirqd/120:17:211
1529199204,15cyclictest21-21ksoftirqd/119:45:151
1529199204,15cyclictest0-21swapper/120:45:141
15291992020,0cyclictest21-21ksoftirqd/122:20:381
15291992020,0cyclictest0-21swapper/122:38:091
15291992019,1cyclictest21-21ksoftirqd/121:24:341
1529199200,19cyclictest0-21swapper/121:25:021
1529699198,10cyclictest0-21swapper/222:44:042
15296991917,1cyclictest0-21swapper/223:24:562
15296991916,2cyclictest22039-21expr21:15:152
15296991916,2cyclictest16305-21nfsd423:55:182
15296991914,1cyclictest0-21swapper/222:01:432
15291991919,0cyclictest21-21ksoftirqd/122:27:061
15291991916,2cyclictest21-21ksoftirqd/119:20:011
15291991913,0cyclictest201rcuc/100:22:161
1529199191,1cyclictest9995-21expr23:45:141
1529199190,18cyclictest0-21swapper/121:46:511
1528799193,15cyclictest0-21swapper/019:50:050
15287991917,1cyclictest0-21swapper/022:17:250
15287991917,1cyclictest0-21swapper/021:40:010
15287991916,2cyclictest22616-21http_loadtime23:10:160
1528799190,18cyclictest0-21swapper/022:36:170
1529699182,15cyclictest19710-21timerwakeupswit00:00:222
1529699182,15cyclictest0-21swapper/220:18:432
15296991816,1cyclictest0-21swapper/219:59:192
15296991815,2cyclictest30435-21ntp_states00:20:192
15296991815,2cyclictest2813-21timerwakeupswit23:30:192
15296991815,2cyclictest15443-21timerwakeupswit22:55:232
15296991814,3cyclictest10151-21lxd21:54:502
15296991812,5cyclictest18810-21grep20:10:182
15296991812,3cyclictest21167-21anvil21:10:562
1529699181,16cyclictest3978-21H222:10:212
1529699181,16cyclictest24970-21nvmesmart_nvme000:10:192
1529699180,3cyclictest21500-21turbostat23:10:002
1529699180,3cyclictest14506-21snapd19:43:102
1529699180,2cyclictest10618-21latency23:45:172
1529699180,17cyclictest6201-21sed21:45:012
1529699180,17cyclictest6201-21sed21:45:012
1529699180,17cyclictest0-21swapper/221:45:132
1529699180,15cyclictest13285-21munin-run22:55:002
1529199183,1cyclictest0-21swapper/123:06:281
1529199182,15cyclictest21-21ksoftirqd/119:30:411
1529199182,15cyclictest201rcuc/100:30:191
15291991816,1cyclictest21-21ksoftirqd/123:30:131
15291991816,1cyclictest21-21ksoftirqd/123:20:181
15291991816,1cyclictest201rcuc/121:35:231
15291991815,2cyclictest5597-21/usr/sbin/munin19:50:151
1529199180,16cyclictest1276-21proc_pri19:40:221
1529199180,16cyclictest0-21swapper/122:45:181
15287991817,1cyclictest0-21swapper/022:40:490
15287991816,1cyclictest31720-21sensors21:30:200
15287991815,1cyclictest111rcu_preempt20:25:180
1528799181,16cyclictest26930-21chrt21:24:520
15296991715,1cyclictest3991-21H222:10:212
15296991715,1cyclictest0-21swapper/223:35:152
15296991715,1cyclictest0-21swapper/221:55:142
15296991715,1cyclictest0-21swapper/221:35:562
15296991715,1cyclictest0-21swapper/219:50:172
15296991714,2cyclictest8070-21apache_volume20:50:152
15296991714,2cyclictest3386-21fschecks_time19:45:162
15296991714,2cyclictest27101-21awk00:15:162
15296991714,2cyclictest2629-21irqstats22:35:182
15296991714,2cyclictest25834-21apache_accesses20:25:122
15296991714,2cyclictest14854-21expr20:05:142
1529699170,2cyclictest883-21taskset22:31:052
1529699170,2cyclictest3989-21H222:10:212
1529699170,2cyclictest3828-21ntp_states00:30:192
1529699170,2cyclictest27192-21postgres23:18:082
1529699170,2cyclictest27050-21nfsd422:20:222
1529699170,2cyclictest19895-21tr19:15:212
1529699170,2cyclictest12344-21apache_processe23:50:112
1529699170,2cyclictest1079-21cups-browsed19:35:202
1529699170,2cyclictest10151-21lxd22:08:502
1529699170,16cyclictest680-21cut20:35:202
1529699170,16cyclictest3343-21kernelversion20:40:202
1529699170,16cyclictest317412chrt00:25:072
1529699170,16cyclictest30929-21cstates23:25:122
1529699170,16cyclictest30809-21hddtemp_smartct21:30:162
1529699170,16cyclictest28356-21sed21:25:152
1529699170,16cyclictest24633-21/usr/sbin/munin21:20:212
1529699170,16cyclictest23212-21cpuspeed_turbos22:15:132
1529699170,16cyclictest22190-21sed19:20:202
1529699170,16cyclictest18606-21munin-run23:05:002
1529699170,16cyclictest16301-21apache_volume21:05:132
1529699170,16cyclictest11840-21date20:00:182
1529699170,16cyclictest0-21swapper/222:25:132
1529699170,16cyclictest0-21swapper/200:35:212
1529199172,1cyclictest201rcuc/122:54:081
1529199172,15cyclictest21-21ksoftirqd/121:15:151
15291991715,1cyclictest21-21ksoftirqd/122:40:221
15291991715,1cyclictest201rcuc/123:55:181
15291991715,1cyclictest201rcuc/123:40:161
15291991715,1cyclictest201rcuc/100:15:001
15291991715,1cyclictest0-21swapper/120:20:121
15291991715,1cyclictest0-21swapper/120:00:171
15291991714,2cyclictest6308-21sed00:35:211
15291991714,2cyclictest4325-21expr23:35:161
15291991714,2cyclictest31549-21cstates22:30:131
15291991714,2cyclictest26296-21cat20:25:151
15291991714,2cyclictest13765-21grep21:00:151
1529199171,15cyclictest31564-21ps21:30:201
1529199170,2cyclictest3954-21VM22:10:211
1529199170,2cyclictest10806-21cut20:00:011
1529199170,2cyclictest0-21swapper/120:35:181
1529199170,16cyclictest9581-21pzem_current20:50:221
1529199170,16cyclictest2989-21fschecks_count20:40:171
1529199170,16cyclictest22591-21anvil00:06:291
1529199170,16cyclictest16123-21ntp_kernel_pll_22:00:201
1529199170,16cyclictest15831-21cut19:10:141
1529199170,16cyclictest15433-21ls20:05:181
1529199170,16cyclictest1526-21lxd19:28:511
15287991715,1cyclictest0-21swapper/019:30:510
15287991714,2cyclictest27686-21ntpq00:15:180
15287991714,2cyclictest24812-21latency19:25:170
15287991714,2cyclictest22403-21runrttasks22:11:430
15287991714,2cyclictest17639-21apache_processe20:10:130
15287991714,2cyclictest17485-21apache_volume22:05:140
15287991714,2cyclictest14900-21nfsd421:00:200
15287991714,1cyclictest0-21swapper/023:05:230
15287991714,1cyclictest0-21swapper/021:25:170
15287991713,3cyclictest19109-21nfsd400:00:180
1528799171,1cyclictest0-21swapper/023:44:080
1528799171,15cyclictest29194-21fschecks_count20:30:160
1528799170,2cyclictest8832-21munin-run21:50:000
1528799170,2cyclictest5819-21df00:35:180
1528799170,2cyclictest4385-21df_inode21:40:160
1528799170,2cyclictest4385-21df_inode21:40:160
1528799170,2cyclictest31903-21ntp_states23:25:170
1528799170,2cyclictest29239-21proc_pri23:20:180
1528799170,2cyclictest25596-21munin-run20:25:000
1528799170,2cyclictest24853-21python323:15:010
1528799170,2cyclictest2435-21tr20:40:150
1528799170,2cyclictest18024-21threads21:05:240
1528799170,2cyclictest14898-21grep22:55:190
1528799170,2cyclictest0-21swapper/021:10:230
1528799170,1cyclictest3450-21gsd-color21:17:150
1528799170,16cyclictest9799-21ps19:55:200
1528799170,16cyclictest9696-21switchtime22:45:220
1528799170,16cyclictest9372-21cpuspeed_turbos21:50:120
1528799170,16cyclictest30574-21grep19:35:190
1528799170,16cyclictest18898-21df19:15:160
1528799170,16cyclictest1856-21systemd-udevd20:18:520
1528799170,16cyclictest13046-21hddtemp_smartct23:50:140
1528799170,16cyclictest11931-21munin-run23:50:000
1528799170,16cyclictest1192-21cat00:25:230
15296991614,1cyclictest29143-21df20:30:142
15296991614,1cyclictest0-21swapper/220:20:112
15296991614,1cyclictest0-21swapper/219:25:162
15296991613,2cyclictest3954-21VM22:10:212
15296991613,2cyclictest20363-21apache_volume22:10:132
1529699160,1cyclictest0-21swapper/220:55:172
1529699160,1cyclictest0-21swapper/200:05:162
1529699160,15cyclictest5343-21apache_volume20:45:092
1529699160,15cyclictest0-21swapper/223:10:122
15291991614,1cyclictest21-21ksoftirqd/119:35:141
15291991614,1cyclictest0-21swapper/121:10:181
15291991614,1cyclictest0-21swapper/120:10:471
15291991614,1cyclictest0-21swapper/100:00:111
15291991613,2cyclictest26871-21df00:15:141
1529199160,15cyclictest17489-21apt-get22:05:141
1529199160,15cyclictest0-21swapper/120:30:161
1529199160,15cyclictest0-21swapper/119:20:151
15287991614,1cyclictest21236-21expr19:20:160
15287991614,1cyclictest0-21swapper/022:20:200
15287991614,1cyclictest0-21swapper/022:00:130
15287991614,1cyclictest0-21swapper/021:55:150
15287991614,1cyclictest0-21swapper/020:45:150
15287991614,1cyclictest0-21swapper/019:45:140
15287991614,1cyclictest0-21swapper/019:40:240
15287991614,1cyclictest0-21swapper/000:30:090
15287991613,2cyclictest10794-21apache_accesses20:55:140
1528799160,2cyclictest16558-21ps23:55:190
1528799160,1cyclictest25175-21grep00:10:210
1528799160,1cyclictest17762-21wc23:00:210
1528799160,15cyclictest455-21plymouthd20:50:030
1528799160,15cyclictest3450-21gsd-color20:35:210
1528799160,15cyclictest2457-21cut23:30:190
1528799160,15cyclictest0-21swapper/023:35:160
1528799160,15cyclictest0-21swapper/022:50:140
1528799160,15cyclictest0-21swapper/022:25:120
1528799160,15cyclictest0-21swapper/020:05:110
1528799160,15cyclictest0-21swapper/020:00:160
1528799160,15cyclictest0-21swapper/019:10:150
1528799160,15cyclictest0-21swapper/000:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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