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2026-08-06 - 16:35
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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 Thu Aug 06, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
827899252,18cyclictest0-21swapper/010:10:010
827999230,22cyclictest0-21swapper/108:25:111
828099220,18cyclictest0-21swapper/211:36:012
8279992214,5cyclictest25382-21latency10:25:171
8279992214,5cyclictest25382-21latency10:25:171
827999203,16cyclictest6116-21date09:55:001
827999200,19cyclictest870-21systemd-logind10:06:521
8280991913,5cyclictest0-21swapper/211:10:182
828099190,18cyclictest0-21swapper/208:35:092
827999192,16cyclictest30308-21grep09:40:131
827999190,17cyclictest399-20systemd-journal09:09:551
8278991916,2cyclictest24526-21cpuspeed_turbos10:25:140
8278991916,2cyclictest24526-21cpuspeed_turbos10:25:140
827899190,18cyclictest0-21swapper/012:12:440
827899190,18cyclictest0-21swapper/007:17:060
828099182,2cyclictest1100-21snmpd10:30:142
828099182,15cyclictest16712-21cat10:10:162
8280991815,2cyclictest934-21df10:40:132
8280991815,2cyclictest17309-21cron11:10:002
8280991813,4cyclictest0-21swapper/212:31:202
828099181,2cyclictest9214-21fschecks_count07:10:142
828099181,2cyclictest3450-21gsd-color09:00:172
827999182,15cyclictest31900-21expr11:35:121
827999182,15cyclictest29329-21fschecks_time11:30:141
8279991816,1cyclictest0-21swapper/109:20:191
8279991816,1cyclictest0-21swapper/108:55:131
8279991813,3cyclictest30273-21python307:50:011
827999181,16cyclictest515-21/usr/sbin/munin12:35:191
827999180,18cyclictest0-21swapper/110:17:341
827999180,17cyclictest426-21systemd-udevd09:58:521
827999180,17cyclictest1516-21lxd07:56:461
827999180,17cyclictest0-21swapper/108:20:171
827899183,9cyclictest1038-21http07:55:010
827899182,15cyclictest57862sleep009:51:590
827899180,3cyclictest10211-21python308:10:010
827899180,2cyclictest16354-21ls09:15:130
827899180,16cyclictest9205-21gpg-connect-age10:55:010
8280991715,1cyclictest97552sleep211:50:552
8280991715,1cyclictest0-21swapper/211:40:122
8280991715,1cyclictest0-21swapper/210:35:112
8280991714,2cyclictest455-21plymouthd10:20:132
8280991714,2cyclictest3989-21H222:10:212
8280991714,2cyclictest22030-21systemctl11:15:212
8280991714,2cyclictest22030-21systemctl11:15:212
8280991714,2cyclictest21826-21cron07:35:012
8280991714,2cyclictest17603-21hddtemp_smartct08:20:152
8280991714,2cyclictest14713-21vmstat10:05:232
8280991714,2cyclictest14567-21cat07:20:132
8280991714,2cyclictest13204-21latency_hist12:00:002
8280991713,3cyclictest3991-21H222:10:212
8280991713,2cyclictest5179-21grep08:55:142
828099171,1cyclictest2441-21latency08:50:172
828099171,1cyclictest0-21swapper/208:40:182
828099171,15cyclictest0-21swapper/207:50:012
828099170,2cyclictest9987-21apache_volume09:05:122
828099170,2cyclictest9261-21apt-config10:55:012
828099170,2cyclictest3414-21master08:45:562
828099170,2cyclictest29146-21expr11:30:132
828099170,2cyclictest23460-21open_files12:15:172
828099170,2cyclictest14885-21nfsd408:15:182
828099170,2cyclictest13991-21idleruntime12:00:152
828099170,1cyclictest0-21swapper/209:15:132
828099170,16cyclictest9216-21munin-run10:00:002
828099170,16cyclictest8372-21smtpd10:53:082
828099170,16cyclictest689-21grep09:45:132
828099170,16cyclictest6238-21netstat11:45:162
828099170,16cyclictest5553-21fschecks_time08:00:152
828099170,16cyclictest31655-21nvmesmart_nvme009:40:192
828099170,16cyclictest29894-21sendmail-mta07:46:112
828099170,16cyclictest25529-21munin-run11:25:002
828099170,16cyclictest24618-21cut10:25:142
828099170,16cyclictest24618-21cut10:25:142
828099170,16cyclictest2386-21cat07:55:152
828099170,16cyclictest22617-21cut08:30:012
828099170,16cyclictest20349-21mailstats09:20:212
8279991715,1cyclictest23609-21expr11:20:141
8279991715,1cyclictest0-21swapper/111:11:251
8279991715,1cyclictest0-21swapper/110:21:041
8279991714,2cyclictest454-21expr10:40:131
8279991714,2cyclictest3450-21gsd-color08:10:181
8279991714,2cyclictest30381-21grep12:30:121
8279991714,2cyclictest30096-21cat10:35:131
8279991714,2cyclictest2928-21ntp_states08:50:191
8279991714,2cyclictest27514-21cpuspeed_turbos09:35:131
8279991714,2cyclictest22839-21sort11:20:001
8279991714,2cyclictest22839-21sort11:20:001
8279991714,2cyclictest13666-21apache_volume08:15:121
8279991714,2cyclictest12682-21chrt11:58:391
8279991714,2cyclictest10054-21processes07:10:191
827999171,15cyclictest0-21swapper/109:15:171
827999170,2cyclictest8933-21latency_hist10:55:011
827999170,2cyclictest8265-21fschecks_count08:05:141
827999170,2cyclictest7767-21apache_volume11:50:111
827999170,2cyclictest7484-21cut09:00:131
827999170,2cyclictest31323-21expr08:45:131
827999170,2cyclictest26252-21missed_timers07:40:171
827999170,2cyclictest18064-21switchtime12:05:211
827999170,16cyclictest9612-21expr10:55:141
827999170,16cyclictest5091-21basename10:45:211
827999170,16cyclictest4905-21apache_processe08:00:121
827999170,16cyclictest27244-21grep10:30:131
827999170,16cyclictest22395-21irqstats09:25:161
827999170,16cyclictest1856-21systemd-udevd08:30:521
827999170,16cyclictest16792-21/usr/sbin/munin07:25:151
827999170,16cyclictest15550-21cron12:05:001
827999170,16cyclictest14504-21snapd07:30:281
827999170,16cyclictest10669-21chrt10:00:171
8278991715,1cyclictest17830-21cpuspeed_turbos11:10:140
8278991715,1cyclictest0-21swapper/008:00:470
8278991714,2cyclictest9950-21expr10:00:140
8278991714,2cyclictest8526-21idleruntime11:50:140
8278991714,2cyclictest3294-21apache_volume10:45:120
8278991714,2cyclictest28429-21cat09:35:170
8278991714,2cyclictest2711-21hddtemp_smartct11:40:140
8278991714,2cyclictest2604-21users12:35:210
8278991714,2cyclictest25524-21cut08:35:150
8278991714,2cyclictest24805-21apache_volume12:20:100
8278991714,2cyclictest18777-21expr10:15:130
8278991714,2cyclictest1300-21lxd11:48:460
8278991714,2cyclictest0-21swapper/009:05:180
8278991713,3cyclictest0-21swapper/011:33:310
827899171,15cyclictest0-21swapper/010:35:110
827899171,15cyclictest0-21swapper/009:30:000
827899170,2cyclictest9616-21latency_hist09:05:000
827899170,2cyclictest8667-21cat10:55:000
827899170,2cyclictest29847-21munin-run12:30:000
827899170,2cyclictest24735-21pzem_current11:20:200
827899170,2cyclictest2007-21systemd-journal08:46:200
827899170,2cyclictest1398-21cat10:40:160
827899170,2cyclictest12868-21apache_volume09:10:120
827899170,2cyclictest12114-21apache_volume11:00:120
827899170,16cyclictest8283-21nvmesmart_nvme009:55:200
827899170,16cyclictest28427-21cpuspeed_turbos08:40:140
827899170,16cyclictest27630-21cstates10:30:140
827899170,16cyclictest26592-21grep11:25:130
827899170,16cyclictest26013-21/usr/sbin/munin07:40:150
827899170,16cyclictest22621-21expr07:35:110
827899170,16cyclictest21843-21hddtemp_smartct10:20:140
827899170,16cyclictest20559-21grep11:15:140
827899170,16cyclictest20559-21grep11:15:140
827899170,16cyclictest19438-21fschecks_time09:20:150
827899170,16cyclictest15812-21grep10:10:130
827899170,16cyclictest14851-21apache_accesses11:05:110
827899170,16cyclictest14283-21memory12:00:170
827899170,0cyclictest0-21swapper/012:32:070
8280991614,1cyclictest18981-21grep10:15:142
8280991614,1cyclictest0-21swapper/211:00:142
8280991614,1cyclictest0-21swapper/209:30:152
8280991614,1cyclictest0-21swapper/209:25:132
8280991614,1cyclictest0-21swapper/208:30:142
8280991614,1cyclictest0-21swapper/207:40:202
8280991613,2cyclictest25401-21smtpd11:25:142
8280991613,2cyclictest17930-21pzem_voltage12:05:202
828099160,2cyclictest5070-21awk09:50:162
828099160,2cyclictest13071-21cut09:10:132
828099160,1cyclictest0-21swapper/212:20:162
828099160,1cyclictest0-21swapper/210:00:162
828099160,1cyclictest0-21swapper/208:05:212
828099160,15cyclictest22838-21df07:35:112
828099160,15cyclictest19735-21cat12:10:132
828099160,15cyclictest0-21swapper/210:45:172
828099160,15cyclictest0-21swapper/209:35:192
828099160,15cyclictest0-21swapper/208:10:022
828099160,15cyclictest0-21swapper/207:25:142
828099160,15cyclictest0-21swapper/207:15:182
8279991614,1cyclictest22619-21df12:15:111
8279991614,1cyclictest0-21swapper/112:10:181
8279991614,1cyclictest0-21swapper/111:00:131
8279991614,1cyclictest0-21swapper/109:45:161
8279991614,1cyclictest0-21swapper/108:40:121
8279991614,1cyclictest0-21swapper/107:20:101
8279991614,1cyclictest0-21swapper/107:15:131
827999160,1cyclictest0-21swapper/112:20:121
827999160,15cyclictest5585-21expr11:45:121
827999160,15cyclictest281242sleep111:28:351
827999160,15cyclictest27988-21expr12:25:131
827999160,15cyclictest2583-21df_inode11:40:131
827999160,15cyclictest25378-21bounce08:35:071
827999160,15cyclictest24604-21/usr/sbin/munin09:30:151
827999160,15cyclictest23465-21nfsd407:35:151
827999160,15cyclictest12862-21apache_accesses09:10:111
827999160,15cyclictest0-21swapper/111:05:161
827999160,15cyclictest0-21swapper/110:10:131
827999160,15cyclictest0-21swapper/107:55:011
8278991614,1cyclictest0-21swapper/012:05:160
8278991614,1cyclictest0-21swapper/011:35:150
8278991614,1cyclictest0-21swapper/009:45:130
8278991614,1cyclictest0-21swapper/008:20:010
8278991614,1cyclictest0-21swapper/007:45:180
8278991614,1cyclictest0-21swapper/007:30:140
8278991614,1cyclictest0-21swapper/007:20:110
8278991613,2cyclictest6014-21cut08:55:190
8278991613,2cyclictest22169-21cpuspeed_turbos12:15:110
8278991613,2cyclictest0-21swapper/009:30:010
827899160,2cyclictest455-21plymouthd08:10:020
827899160,15cyclictest3450-21gsd-color08:15:130
827899160,15cyclictest30237-21find09:40:110
827899160,15cyclictest2439-21/usr/sbin/munin08:50:170
827899160,15cyclictest22674-21apache_processe08:30:110
827899160,15cyclictest20749-21if_enp1s008:25:150
827899160,15cyclictest1613-21cmp07:55:010
827899160,15cyclictest0-21swapper/011:55:130
827899160,15cyclictest0-21swapper/007:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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