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2026-06-09 - 23:54
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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 Tue Jun 09, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17736992516,9cyclictest0-21swapper/111:05:001
17736992415,5cyclictest21-21ksoftirqd/111:10:191
17737992222,0cyclictest0-21swapper/208:05:012
1773799204,15cyclictest0-21swapper/210:20:112
17737992018,1cyclictest28-21ksoftirqd/211:25:002
1773799200,5cyclictest870-21systemd-logind07:13:522
1773699203,2cyclictest30723-21cpuspeed_turbos11:20:141
17736992017,2cyclictest10380-21perf10:45:001
1773799192,16cyclictest31970-21smtpd09:29:242
1773699192,16cyclictest10587-21chrt07:52:291
17736991914,1cyclictest0-21swapper/111:28:101
1773599193,15cyclictest0-21swapper/012:24:230
1773599192,16cyclictest18698-21grep09:05:130
17735991917,1cyclictest9-21ksoftirqd/010:03:280
17735991916,2cyclictest976-21kernelversion09:30:170
17735991915,3cyclictest0-21swapper/007:10:200
1773599191,17cyclictest0-21swapper/011:35:190
1773799182,1cyclictest0-21swapper/207:55:142
17737991816,1cyclictest0-21swapper/210:45:122
17737991815,2cyclictest15576-21expr11:50:132
17737991814,3cyclictest4035-21H222:10:212
1773799181,16cyclictest6363-21nfsd410:35:202
1773799180,3cyclictest6392-21nfsd412:30:162
1773799180,3cyclictest455-21plymouthd10:25:172
1773799180,14cyclictest0-21swapper/207:35:172
1773799180,14cyclictest0-21swapper/207:35:172
1773699187,7cyclictest21-21ksoftirqd/109:00:011
1773699181,2cyclictest1912-21bounce07:37:331
1773699181,2cyclictest1912-21bounce07:37:331
1773699180,2cyclictest6360-21nfsd412:30:161
17735991815,2cyclictest25977-21ntpq11:10:170
17735991815,2cyclictest21884-21nfsd412:00:180
17735991815,2cyclictest14707-21vmstat08:55:230
17735991815,2cyclictest12222-21chrt08:53:470
17735991814,2cyclictest4590-21find07:40:210
1773599181,15cyclictest0-21swapper/011:21:580
1773599181,15cyclictest0-21swapper/009:51:030
1773599180,16cyclictest4435-21python310:35:000
1773599180,16cyclictest24313-21nfsd410:10:170
17737991716,1cyclictest28-21ksoftirqd/211:28:242
17737991715,1cyclictest28-21ksoftirqd/211:15:012
17737991715,1cyclictest28-21ksoftirqd/209:50:012
17737991715,1cyclictest28-21ksoftirqd/208:50:132
17737991715,1cyclictest0-21swapper/207:25:162
17737991715,1cyclictest0-21swapper/207:17:322
17737991714,2cyclictest9076-21pluginstate09:45:002
17737991714,2cyclictest5776-21chrt09:38:182
17737991714,2cyclictest3985-21H222:10:212
17737991714,2cyclictest27180-21tr09:20:142
17737991714,2cyclictest21898-21cron08:15:012
17737991714,2cyclictest1986-21date12:25:002
17737991714,2cyclictest1274-21runrttasks11:30:552
17737991713,3cyclictest3541-21grep12:25:182
1773799171,15cyclictest13780-21latency08:55:172
1773799170,2cyclictest26409-21fschecks_count10:15:132
1773799170,2cyclictest25159-21sshd08:20:132
1773799170,2cyclictest24176-21cron11:14:552
1773799170,2cyclictest21266-21fschecks_time12:00:152
1773799170,2cyclictest18878-21tr09:05:132
1773799170,2cyclictest15693-21dpkg09:00:022
1773799170,16cyclictest9803-21cut08:50:002
1773799170,16cyclictest5788-21nfsd408:40:182
1773799170,16cyclictest3680-21sort10:30:212
1773799170,16cyclictest29727-21pzem_energy08:25:192
1773799170,16cyclictest2715-21/usr/sbin/munin07:40:122
1773799170,16cyclictest19369-21pzem_power11:55:222
1773799170,16cyclictest16112-21nvmesmart_nvme009:55:192
1773799170,16cyclictest11225-21sendmail_mailtr11:40:182
1773699172,15cyclictest21-21ksoftirqd/110:55:481
17736991715,2cyclictest0-21swapper/112:20:191
17736991715,1cyclictest238062chrt11:07:241
17736991715,1cyclictest238062chrt11:07:241
17736991715,1cyclictest0-21swapper/111:40:161
17736991714,2cyclictest7755-21nfsd409:40:181
17736991714,2cyclictest5903-21grep08:40:181
17736991714,2cyclictest31257-21pzem_energy09:25:211
17736991714,2cyclictest30899-21taskset08:30:101
17736991714,2cyclictest3053-21systemd-logind08:36:521
17736991714,2cyclictest27869-21nfsd407:25:181
17736991714,2cyclictest26012-21cpuspeed_turbos10:15:121
17736991714,2cyclictest24142-21grep07:20:131
17736991714,2cyclictest2069-21systemd-udevd12:02:511
17736991714,2cyclictest19616-21cat09:05:161
17736991714,2cyclictest14501-21snapd08:27:581
17736991714,2cyclictest0-21swapper/109:55:141
17736991713,3cyclictest3076-21iscsid09:35:201
1773699171,2cyclictest24110-21cat12:05:131
1773699170,2cyclictest8010-21grep11:35:181
1773699170,2cyclictest23087-21systemctl09:10:211
1773699170,2cyclictest21065-21proc_pri08:10:171
1773699170,2cyclictest1516-21lxd12:18:431
1773699170,1cyclictest2310-21fschecks_count10:30:141
1773699170,16cyclictest9541-21switchtime12:35:221
1773699170,16cyclictest6400-21fschecks_count07:45:151
1773699170,16cyclictest5937-21/usr/sbin/munin10:35:181
1773699170,16cyclictest4399-21ntp_kernel_err07:40:191
1773699170,16cyclictest32525-21sort09:30:131
1773699170,16cyclictest31535-21cat10:25:121
1773699170,16cyclictest3053-21systemd-logind09:24:531
1773699170,16cyclictest29780-21expr10:20:201
1773699170,16cyclictest27338-21needreboot12:10:191
1773699170,16cyclictest16934-21cat11:50:221
1773699170,16cyclictest14496-21snapd07:10:281
1773699170,16cyclictest12709-21latency_hist08:55:011
1773699170,16cyclictest12523-21expr09:50:131
1773699170,16cyclictest1114-21lldpd11:58:261
1773699170,15cyclictest0-21swapper/109:03:291
17735991716,1cyclictest9-21ksoftirqd/012:07:180
17735991715,1cyclictest113712chrt09:47:530
17735991714,2cyclictest9328-21cat07:50:160
17735991714,2cyclictest863-21avahi-daemon11:55:230
17735991714,2cyclictest3987-21H222:10:210
17735991714,2cyclictest3414-21master09:57:290
17735991714,2cyclictest32514-21grep10:25:170
17735991714,2cyclictest14545-21snapd07:25:280
17735991714,2cyclictest10504-21cat10:45:000
17735991713,3cyclictest3983-21H222:10:210
17735991713,3cyclictest31106-21cpuspeed_turbos08:30:130
17735991713,1cyclictest4035-21H222:10:210
1773599171,15cyclictest27648-21proc_pri12:10:200
1773599171,15cyclictest2395-21missed_timers08:35:170
1773599171,15cyclictest0-21swapper/009:15:140
1773599170,2cyclictest4919-21grep09:35:180
1773599170,2cyclictest3979-21H222:10:210
1773599170,2cyclictest30451-21pzem_energy12:15:210
1773599170,2cyclictest28325-21cpuspeed_turbos08:25:130
1773599170,2cyclictest28105-21ls09:20:180
1773599170,2cyclictest21966-21expr09:10:140
1773599170,2cyclictest2093-21cron07:39:010
1773599170,2cyclictest2093-21cron07:39:010
1773599170,2cyclictest2086-21/usr/sbin/munin12:25:150
1773599170,2cyclictest20750-21/usr/sbin/munin08:10:150
1773599170,2cyclictest17685-21cat09:00:200
1773599170,2cyclictest1523-21lxd11:54:430
1773599170,16cyclictest3351-21lxd11:44:430
1773599170,16cyclictest31128-21chrt09:25:190
1773599170,16cyclictest23477-21cron07:20:010
1773599170,16cyclictest17271-21expr08:05:150
1773599170,16cyclictest13545-21uname11:45:170
1773599170,15cyclictest11990-21grep10:45:170
17737991615,0cyclictest0-21swapper/211:00:132
17737991614,1cyclictest0-21swapper/212:37:342
17737991614,1cyclictest0-21swapper/211:05:162
17737991614,1cyclictest0-21swapper/211:05:162
17737991614,1cyclictest0-21swapper/210:05:092
17737991614,1cyclictest0-21swapper/210:00:152
17737991614,1cyclictest0-21swapper/209:30:102
17737991613,2cyclictest2562-21nfsd408:35:172
17737991613,2cyclictest25003-21idleruntime09:15:162
17737991613,2cyclictest16894-21fschecks_time10:55:142
1773799161,1cyclictest0-21swapper/207:45:142
1773799161,15cyclictest0-21swapper/209:50:102
1773799160,2cyclictest7054-21cat11:35:132
1773799160,1cyclictest0-21swapper/210:50:182
1773799160,1cyclictest0-21swapper/208:15:152
1773799160,1cyclictest0-21swapper/207:20:162
1773799160,15cyclictest31800-21if_lxdbr008:30:162
1773799160,15cyclictest0-21swapper/212:15:132
1773799160,15cyclictest0-21swapper/212:10:142
1773799160,15cyclictest0-21swapper/212:05:142
1773799160,15cyclictest0-21swapper/211:45:132
1773799160,15cyclictest0-21swapper/210:10:052
1773799160,15cyclictest0-21swapper/208:05:142
1773799160,15cyclictest0-21swapper/207:30:112
17736991614,1cyclictest28033-21expr11:15:161
17736991614,1cyclictest0-21swapper/111:30:211
17736991614,1cyclictest0-21swapper/108:45:221
1773699160,2cyclictest13074-21timerwakeupswit07:55:231
1773699160,1cyclictest13962-21apt-get08:00:121
1773699160,1cyclictest0-21swapper/110:50:141
1773699160,1cyclictest0-21swapper/110:45:141
1773699160,1cyclictest0-21swapper/108:20:141
1773699160,1cyclictest0-21swapper/108:15:121
1773699160,1cyclictest0-21swapper/107:32:071
1773699160,15cyclictest2894-21which12:25:151
1773699160,15cyclictest21040-21apt-key07:15:021
1773699160,15cyclictest18398-21latency10:00:171
1773699160,15cyclictest0-21swapper/111:45:221
1773699160,15cyclictest0-21swapper/110:10:111
1773699160,15cyclictest0-21swapper/110:05:191
1773699160,15cyclictest0-21swapper/109:45:171
1773699160,15cyclictest0-21swapper/109:15:141
1773699160,15cyclictest0-21swapper/108:05:051
17735991614,1cyclictest20161-21head11:00:170
17735991614,1cyclictest0-21swapper/011:05:140
17735991614,1cyclictest0-21swapper/011:05:140
17735991614,1cyclictest0-21swapper/010:50:170
17735991614,1cyclictest0-21swapper/010:06:560
17735991614,1cyclictest0-21swapper/008:15:150
17735991614,1cyclictest0-21swapper/008:00:130
17735991614,1cyclictest0-21swapper/007:45:160
17735991614,1cyclictest0-21swapper/007:20:010
17735991613,2cyclictest3981-21H222:10:210
1773599160,2cyclictest16218-21/usr/sbin/munin10:55:100
1773599160,1cyclictest0-21swapper/011:30:130
1773599160,1cyclictest0-21swapper/008:45:140
1773599160,15cyclictest6478-21awk10:35:200
1773599160,15cyclictest26817-21latency10:15:160
1773599160,15cyclictest0-21swapper/011:25:130
1773599160,15cyclictest0-21swapper/007:55:070
1773599160,15cyclictest0-21swapper/007:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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