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2026-07-21 - 03:47
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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 Tue Jul 21, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7198992423,1cyclictest0-21swapper/200:32:182
719199236,14cyclictest0-21swapper/021:20:170
719399227,11cyclictest14077-21latency_hist20:20:011
7193992211,4cyclictest32746-21python323:44:591
7198992119,1cyclictest97762chrt19:14:472
719899205,1cyclictest28-21ksoftirqd/222:00:552
719899204,15cyclictest0-21swapper/220:13:232
7198992018,1cyclictest28-21ksoftirqd/222:28:592
719899201,1cyclictest0-21swapper/220:23:242
719899200,19cyclictest426-21systemd-udevd23:30:522
7193992012,4cyclictest0-21swapper/120:30:521
7191992017,2cyclictest9-21ksoftirqd/022:35:200
7191992011,8cyclictest0-21swapper/021:15:010
7198991917,1cyclictest28-21ksoftirqd/219:40:222
7198991917,1cyclictest20216-21cut22:24:592
7198991915,3cyclictest0-21swapper/220:59:032
7198991913,3cyclictest0-21swapper/219:38:232
719899191,16cyclictest15867-21cpuspeed_turbos19:25:152
719899190,18cyclictest0-21swapper/222:31:232
719899190,16cyclictest3991-21H222:10:212
719899190,16cyclictest27438-21tr21:40:152
719399192,2cyclictest1900-21grep19:55:211
7193991916,1cyclictest0-21swapper/122:03:031
7193991915,2cyclictest0-21swapper/119:14:401
719399190,5cyclictest0-21swapper/100:37:201
719199193,15cyclictest9-21ksoftirqd/019:20:300
7191991917,1cyclictest0-21swapper/021:35:000
7191991916,2cyclictest3987-21H222:10:210
7191991914,1cyclictest0-21swapper/021:58:210
719199190,1cyclictest0-21swapper/021:40:340
719199190,18cyclictest0-21swapper/023:04:530
719899183,1cyclictest0-21swapper/223:40:152
719899182,15cyclictest12311-21taskset19:17:052
7198991815,2cyclictest3991-21H222:10:212
7198991815,2cyclictest30691-21mailstats00:35:212
7198991812,5cyclictest843-21systemd-network20:50:042
719899181,15cyclictest0-21swapper/223:50:142
7198991810,4cyclictest0-21swapper/219:52:412
719899180,17cyclictest870-21systemd-logind21:23:522
719899180,17cyclictest3256-21apache223:46:402
719899180,17cyclictest27629-21cpuspeed_turbos23:35:132
719899180,17cyclictest21959-21latency00:20:182
7193991816,1cyclictest18313-21cpuspeed_turbos00:15:121
7193991815,2cyclictest3937-21java20:06:351
7193991815,2cyclictest31791-21timerwakeupswit19:50:221
719399181,2cyclictest28008-21chrt20:40:491
719399180,2cyclictest3991-21H222:10:211
719399180,17cyclictest7397-21grep21:04:591
719399180,15cyclictest3450-21gsd-color22:30:001
7191991816,1cyclictest9-21ksoftirqd/021:50:120
7191991816,1cyclictest0-21swapper/000:29:560
719199180,15cyclictest3985-21H222:10:210
7198991714,2cyclictest6556-21ls20:05:152
7198991714,2cyclictest4035-21H222:10:212
7198991714,2cyclictest3976-21H222:10:212
7198991714,2cyclictest3976-21H222:10:212
7198991714,2cyclictest30607-21fschecks_time21:45:152
7198991714,2cyclictest30478-21awk22:40:182
7198991714,2cyclictest20680-21nvmesmart_nvme023:20:202
7198991714,2cyclictest20170-21nfsd421:25:182
7198991714,2cyclictest14883-21cat19:20:222
7198991714,2cyclictest13174-21ntp_states20:15:212
7198991714,2cyclictest11832-21awk21:10:182
7198991714,2cyclictest10238-21grep22:05:162
719899171,15cyclictest57092chrt21:59:312
719899171,15cyclictest3985-21H222:10:212
719899171,15cyclictest28-21ksoftirqd/221:30:222
719899171,15cyclictest19043-21ntpq20:25:192
719899171,15cyclictest0-21swapper/222:55:152
719899171,15cyclictest0-21swapper/222:55:152
7198991711,5cyclictest0-21swapper/221:05:192
719899170,2cyclictest9079-21chrt23:57:452
719899170,2cyclictest1267-21switchtime22:45:212
719899170,1cyclictest3991-21H222:10:212
719899170,16cyclictest9678-21/usr/sbin/munin00:00:212
719899170,16cyclictest455-21plymouthd20:35:192
719899170,16cyclictest3987-21H222:10:212
719899170,16cyclictest3981-21H222:10:212
719899170,16cyclictest3976-21H222:10:212
719899170,16cyclictest27328-21awk20:40:192
719899170,16cyclictest26977-21fschecks_time22:35:152
719899170,16cyclictest2356-21smtpd19:56:102
719899170,16cyclictest2341-21/usr/sbin/munin22:50:202
719899170,16cyclictest20380-21/usr/sbin/munin20:30:102
719899170,16cyclictest20209-21ntp_kernel_err19:30:182
719899170,16cyclictest16494-21/usr/sbin/munin23:15:132
719899170,16cyclictest11704-21if_enp1s023:05:162
719399172,1cyclictest21-21ksoftirqd/123:47:141
719399172,1cyclictest0-21swapper/119:17:151
7193991716,1cyclictest21-21ksoftirqd/122:24:291
7193991716,1cyclictest21-21ksoftirqd/120:46:171
7193991715,1cyclictest21025-21cpuspeed_turbos00:20:151
7193991714,2cyclictest3991-21H222:10:211
7193991714,2cyclictest3983-21H222:10:211
7193991714,2cyclictest3976-21H222:10:211
7193991714,2cyclictest28607-21ntp_states21:40:201
7193991714,2cyclictest2519-21fschecks_count20:55:161
7193991714,2cyclictest22833-21awk19:35:191
7193991714,2cyclictest19084-21grep21:25:141
7193991714,2cyclictest14742-21apt-config20:20:011
7193991714,2cyclictest13836-21nvmesmart_nvme000:05:171
7193991714,2cyclictest11809-21nfsd421:10:181
7193991714,1cyclictest0-21swapper/121:05:281
719399171,2cyclictest31566-21cpuspeed_turbos20:50:151
719399171,15cyclictest3985-21H222:10:211
719399171,15cyclictest0-21swapper/123:35:141
719399171,15cyclictest0-21swapper/123:20:131
719399170,2cyclictest6800-21ntp_offset22:55:201
719399170,2cyclictest6800-21ntp_offset22:55:191
719399170,2cyclictest3985-21H222:10:211
719399170,2cyclictest3983-21H222:10:211
719399170,2cyclictest3983-21H222:10:211
719399170,2cyclictest26803-21munin-run19:45:001
719399170,2cyclictest23421-21/usr/sbin/munin23:25:191
719399170,2cyclictest17916-21latency_hist00:15:001
719399170,2cyclictest11727-21/usr/sbin/munin23:05:171
719399170,16cyclictest8906-21chrt22:05:071
719399170,16cyclictest600-21cat21:50:151
719399170,16cyclictest3981-21H222:10:211
719399170,16cyclictest3239-21/usr/sbin/munin21:55:231
719399170,16cyclictest31323-21ntp_offset21:45:181
719399170,16cyclictest28939-21sed00:34:591
719399170,16cyclictest23736-21cut20:35:171
719399170,16cyclictest2007-21systemd-journal20:01:101
719399170,16cyclictest18888-21cut20:25:171
719399170,16cyclictest17552-21smartctl21:20:201
719399170,16cyclictest17077-21expr23:15:151
719399170,16cyclictest16202-21munin-plugin-st23:15:001
719399170,16cyclictest13295-21processes22:10:201
719399170,16cyclictest12984-21apache_processe19:20:121
719399170,16cyclictest0-21swapper/122:15:111
7191991715,1cyclictest0-21swapper/022:19:500
7191991714,2cyclictest7241-21sed20:05:190
7191991714,2cyclictest6333-21grep22:00:130
7191991714,2cyclictest4976-21apt21:00:120
7191991714,2cyclictest3991-21H222:10:210
7191991714,2cyclictest3976-21H222:10:210
7191991714,2cyclictest31143-21nfsd421:45:180
7191991714,2cyclictest26430-21egrep00:30:140
7191991714,2cyclictest19094-21kernelversion00:15:170
7191991714,2cyclictest18361-21fschecks_count22:20:160
7191991714,2cyclictest16777-21nfsd400:10:180
7191991714,2cyclictest14957-21egrep20:20:140
7191991714,2cyclictest14496-21snapd22:05:030
7191991714,2cyclictest12120-21expr20:15:150
7191991713,3cyclictest0-21swapper/023:30:130
719199171,1cyclictest3983-21H222:10:210
719199170,2cyclictest9717-21wc00:00:110
719199170,2cyclictest8276-21expr21:05:140
719199170,2cyclictest4035-21H222:10:210
719199170,2cyclictest30453-21cat19:50:160
719199170,2cyclictest29099-21apache_accesses00:35:100
719199170,2cyclictest28736-21nfsd423:35:180
719199170,2cyclictest25871-21systemctl21:35:220
719199170,1cyclictest0-21swapper/023:05:090
719199170,1cyclictest0-21swapper/021:25:300
719199170,16cyclictest3991-21H222:10:210
719199170,16cyclictest3991-21H222:10:210
719199170,16cyclictest3987-21H222:10:210
719199170,16cyclictest3987-21H222:10:210
719199170,16cyclictest359-21latency_hist23:45:000
719199170,16cyclictest20322-21latency_hist20:30:020
719199170,16cyclictest20209-21/usr/sbin/munin23:20:180
719199170,16cyclictest2007-21systemd-journal19:49:290
719199170,16cyclictest16708-21grep23:15:140
719199170,16cyclictest1569-21grep19:55:170
719199170,16cyclictest14500-21snapd20:30:020
719199170,16cyclictest14058-21awk00:05:200
719199170,16cyclictest10215-21/usr/sbin/munin19:15:200
719199170,16cyclictest0-21swapper/020:42:060
7198991614,1cyclictest28-21ksoftirqd/221:50:142
7198991612,2cyclictest4702-21nfsd420:00:172
719899160,1cyclictest0-21swapper/222:10:182
719899160,15cyclictest4035-21H222:10:212
719899160,15cyclictest10151-21lxd20:46:502
719899160,15cyclictest0-21swapper/221:35:132
7193991614,1cyclictest0-21swapper/122:35:171
7193991614,1cyclictest0-21swapper/121:15:181
7193991614,1cyclictest0-21swapper/120:10:141
7193991614,1cyclictest0-21swapper/119:45:171
7193991614,1cyclictest0-21swapper/119:30:141
7193991613,1cyclictest0-21swapper/122:40:141
719399161,15cyclictest21-21ksoftirqd/123:00:071
719399160,2cyclictest0-21swapper/121:30:191
719399160,1cyclictest0-21swapper/123:50:151
7191991614,1cyclictest0-21swapper/023:10:220
7191991614,1cyclictest0-21swapper/022:50:140
7191991614,1cyclictest0-21swapper/022:45:160
7191991614,1cyclictest0-21swapper/020:10:100
7191991614,1cyclictest0-21swapper/019:30:180
7191991613,2cyclictest4495-21missed_timers20:00:170
7191991613,2cyclictest24605-21cpuspeed_turbos19:40:150
719199160,1cyclictest0-21swapper/020:50:210
719199160,15cyclictest20940-21apt-get00:20:140
719199160,15cyclictest13078-21awk22:10:190
719199160,15cyclictest0-21swapper/022:55:150
719199160,15cyclictest0-21swapper/022:55:140
719199160,15cyclictest0-21swapper/020:45:130
719199160,15cyclictest0-21swapper/020:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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