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2026-07-13 - 23:44
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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 Mon Jul 13, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32009992725,2cyclictest0-21swapper/110:44:311
32009992523,2cyclictest21-21ksoftirqd/111:00:431
32009992522,1cyclictest14655-21chrt11:22:591
3201299237,15cyclictest22846-21perf07:50:012
32009992213,0cyclictest0-21swapper/111:15:591
32008992222,0cyclictest0-21swapper/012:30:170
32012992114,4cyclictest425-21nvmesmart_nvme008:05:212
3201299210,20cyclictest843-21systemd-network12:33:212
3200999210,20cyclictest14499-21snapd10:57:491
3200899213,16cyclictest1887-21nfsd409:05:170
3201299204,15cyclictest0-21swapper/211:16:142
3201299204,15cyclictest0-21swapper/208:10:022
32012992018,1cyclictest0-21swapper/211:10:142
3200999204,15cyclictest0-21swapper/107:57:191
3200999202,17cyclictest0-21swapper/112:35:181
3201299192,2cyclictest3273-21expr07:15:172
32012991919,0cyclictest0-21swapper/211:29:372
32012991917,1cyclictest0-21swapper/212:05:252
32012991914,3cyclictest0-21swapper/208:56:382
3200999192,16cyclictest10219-21systemctl07:25:221
32009991917,1cyclictest0-21swapper/112:12:521
32009991914,4cyclictest870-21systemd-logind11:58:521
32009991913,5cyclictest426-21systemd-udevd08:36:521
3200999190,1cyclictest0-21swapper/111:14:381
3200899193,1cyclictest3975-21open_files10:05:210
32008991917,1cyclictest0-21swapper/010:23:340
3200899191,17cyclictest16957-21nfsd411:25:190
32008991910,4cyclictest0-21swapper/007:20:020
3200899190,1cyclictest0-21swapper/011:36:070
32012991815,2cyclictest24168-21cat12:35:182
32012991815,2cyclictest0-21swapper/212:25:172
32012991814,3cyclictest399-20systemd-journal09:40:012
32012991814,3cyclictest10493-21cat08:25:012
32012991812,5cyclictest32462-21timerwakeupswit10:55:222
3201299181,16cyclictest22237-21expr08:45:152
3201299180,17cyclictest399-20systemd-journal09:26:292
3201299180,17cyclictest399-20systemd-journal09:26:282
3201299180,17cyclictest32194-21awk11:54:592
3201299180,17cyclictest20461-21cut07:45:002
3200999182,1cyclictest23347-21cpuspeed_turbos07:50:161
3200999182,15cyclictest0-21swapper/109:57:411
3200999182,15cyclictest0-21swapper/107:31:311
32009991815,2cyclictest17779-21df12:25:141
3200999181,16cyclictest8613-21readlink09:15:221
3200899182,15cyclictest30763-21sshd08:01:410
32008991816,1cyclictest9-21ksoftirqd/007:38:250
32008991815,2cyclictest14665-21chrt09:28:040
32008991815,2cyclictest14665-21chrt09:28:040
32008991814,3cyclictest3983-21H222:10:210
3200899181,16cyclictest3985-21H222:10:210
3201299172,15cyclictest28-21ksoftirqd/210:24:312
32012991715,1cyclictest0-21swapper/211:45:192
32012991715,1cyclictest0-21swapper/209:05:182
32012991715,1cyclictest0-21swapper/207:30:162
32012991714,2cyclictest8213-21munin-run07:25:002
32012991714,2cyclictest6185-21http_loadtime10:10:152
32012991714,2cyclictest5038-21irqstats11:05:172
32012991714,2cyclictest4110-21expr09:10:142
32012991714,2cyclictest3707-21master12:10:042
32012991714,2cyclictest24507-21cpuspeed_turbos11:40:142
32012991714,2cyclictest20926-21cpu09:40:142
32012991714,2cyclictest18545-21grep11:30:142
32012991714,2cyclictest18545-21grep11:30:142
32012991714,2cyclictest17162-21sed09:30:232
32012991714,2cyclictest1670-21ntp_states11:55:192
32012991714,2cyclictest11566-21cat09:20:232
32012991714,2cyclictest0-21swapper/211:35:002
3201299171,15cyclictest25197-21apt-get10:45:142
3201299170,2cyclictest23778-21nfsd410:40:172
3201299170,2cyclictest17067-21python307:40:012
3201299170,2cyclictest15217-21/usr/sbin/munin08:30:232
3201299170,2cyclictest13681-21grep11:20:182
3201299170,2cyclictest12422-21sed12:15:162
3201299170,16cyclictest987-21apache_processe11:00:122
3201299170,16cyclictest9402-21cat09:20:002
3201299170,16cyclictest547-21grep07:10:152
3201299170,16cyclictest5080-21timerandwakeup12:00:212
3201299170,16cyclictest4100-21H222:10:212
3201299170,16cyclictest32716-21kernelversion10:00:182
3201299170,16cyclictest30403-21cpuspeed_turbos09:00:142
3201299170,16cyclictest30255-21nfsd409:55:182
3201299170,16cyclictest28248-21uptime09:50:222
3201299170,16cyclictest28248-21uptime09:50:222
3201299170,16cyclictest27376-21ntpq07:55:202
3201299170,16cyclictest2271-21apache_processe10:05:142
3201299170,15cyclictest0-21swapper/209:45:132
32009991716,1cyclictest21-21ksoftirqd/110:30:171
32009991715,1cyclictest0-21swapper/109:40:201
32009991714,2cyclictest5665-21df08:15:171
32009991714,2cyclictest455-21plymouthd07:40:011
32009991714,2cyclictest3351-21lxd11:40:431
32009991714,2cyclictest27534-21cpu08:55:141
32009991714,2cyclictest22235-21http_loadtime11:35:141
32009991714,2cyclictest20167-21sed11:30:241
32009991714,2cyclictest20167-21sed11:30:241
32009991714,2cyclictest15801-21chrt08:33:271
32009991714,2cyclictest15421-21dpkg11:25:001
32009991714,2cyclictest1-21systemd09:46:511
3200999171,15cyclictest448-21latency_hist09:05:001
3200999171,15cyclictest19467-21expr10:35:121
3200999170,2cyclictest8779-21df_inode10:15:151
3200999170,2cyclictest4459-21cat09:10:151
3200999170,2cyclictest4099-21H222:10:211
3200999170,2cyclictest30347-21expr11:50:161
3200999170,2cyclictest12828-21timerwakeupswit10:20:221
3200999170,17cyclictest0-21swapper/108:47:011
3200999170,16cyclictest4755-21grep12:00:171
3200999170,16cyclictest3983-21H222:10:211
3200999170,16cyclictest3053-21systemd-logind10:08:521
3200999170,16cyclictest2743-21/usr/sbin/munin07:15:231
3200999170,16cyclictest21138-21fschecks_count07:45:151
3200999170,16cyclictest2069-21systemd-udevd10:46:521
3200999170,16cyclictest20618-21hddtemp_smartct12:30:161
3200999170,16cyclictest15042-21df12:20:141
3200999170,16cyclictest14506-21snapd08:27:581
3200999170,16cyclictest14495-21snapd10:12:581
3200999170,16cyclictest1377-21lxd08:06:431
3200999170,16cyclictest12956-21expr09:25:141
3200999170,16cyclictest12956-21expr09:25:141
3200999170,16cyclictest1079-21cups-browsed09:50:211
3200999170,16cyclictest1079-21cups-browsed09:50:211
3200999170,16cyclictest10216-21run-parts08:25:001
3200999170,16cyclictest0-21swapper/109:35:141
3200999170,15cyclictest0-21swapper/109:20:221
32008991714,2cyclictest7641-21cut08:20:010
32008991714,2cyclictest7410-21nfsd412:05:220
32008991714,2cyclictest4099-21H222:10:210
32008991714,2cyclictest3981-21H222:10:210
32008991714,2cyclictest31966-21nfsd410:55:180
32008991714,2cyclictest29116-21nfsd410:50:180
32008991714,2cyclictest25772-21ntp_kernel_err11:40:190
32008991714,2cyclictest2338-21ls08:10:120
32008991714,2cyclictest19821-21sed12:30:010
32008991714,2cyclictest18010-21run-parts10:30:210
32008991714,2cyclictest10889-21apache_processe08:25:120
3200899171,2cyclictest1556-21chrt08:09:310
3200899171,15cyclictest5097-21nfsd409:10:190
3200899170,3cyclictest18956-21grep07:40:180
3200899170,2cyclictest29965-21kernelversion09:55:180
3200899170,2cyclictest2320-21latency_hist07:15:000
3200899170,2cyclictest2257-21sshd11:55:440
3200899170,2cyclictest21708-21python310:40:010
3200899170,2cyclictest2007-21systemd-journal11:52:580
3200899170,2cyclictest14505-21snapd10:25:280
3200899170,2cyclictest10821-21memory09:20:170
3200899170,16cyclictest963-21/usr/sbin/munin11:00:120
3200899170,16cyclictest8905-21hddtemp_smartct10:15:170
3200899170,16cyclictest32753-21cat10:00:180
3200899170,16cyclictest2872-21systemd-logind09:00:510
3200899170,16cyclictest20613-21ntpq08:40:170
3200899170,16cyclictest18269-21sed08:35:220
3200899170,16cyclictest1521-21lxd09:16:440
3200899170,16cyclictest1-21systemd12:39:590
3200899170,16cyclictest1100-21snmpd11:22:440
32012991614,1cyclictest19261-21apt-get08:40:112
32012991614,1cyclictest13690-21apache_volume10:25:142
32012991614,1cyclictest0-21swapper/212:20:182
32012991614,1cyclictest0-21swapper/210:15:102
32012991614,1cyclictest0-21swapper/208:50:152
32012991614,1cyclictest0-21swapper/208:35:132
32012991614,1cyclictest0-21swapper/207:50:162
32012991613,2cyclictest29402-21fschecks_time08:00:172
3201299160,1cyclictest0-21swapper/208:15:152
3201299160,15cyclictest10980-21cpuspeed_turbos08:25:142
3201299160,15cyclictest0-21swapper/207:25:232
32009991614,1cyclictest28275-21expr10:50:131
32009991614,1cyclictest0-21swapper/110:25:171
32009991614,1cyclictest0-21swapper/107:10:131
32009991613,2cyclictest399-20systemd-journal07:20:021
3200999160,2cyclictest3675-21ntp_states08:10:191
3200999160,1cyclictest0-21swapper/109:30:121
3200999160,15cyclictest842-21ls09:05:141
3200999160,15cyclictest16946-21cron07:40:011
3200999160,15cyclictest11701-21taskset12:15:121
3200999160,15cyclictest0-21swapper/111:45:151
3200999160,15cyclictest0-21swapper/111:05:021
3200999160,15cyclictest0-21swapper/110:00:141
3200999160,15cyclictest0-21swapper/108:50:141
3200999160,15cyclictest0-21swapper/108:40:121
32008991614,1cyclictest54632chrt12:02:370
32008991614,1cyclictest0-21swapper/011:45:120
32008991614,1cyclictest0-21swapper/010:40:010
32008991614,1cyclictest0-21swapper/009:45:110
32008991614,1cyclictest0-21swapper/009:35:200
32008991614,1cyclictest0-21swapper/008:55:190
32008991614,1cyclictest0-21swapper/008:45:140
32008991614,1cyclictest0-21swapper/007:25:160
3200899160,2cyclictest12010-21cat07:30:150
3200899160,1cyclictest0-21swapper/012:10:140
3200899160,1cyclictest0-21swapper/011:30:140
3200899160,1cyclictest0-21swapper/011:30:140
3200899160,1cyclictest0-21swapper/010:45:200
3200899160,15cyclictest9744-21apache_volume11:15:130
3200899160,15cyclictest8999-21grep08:20:190
3200899160,15cyclictest8412-21smartctl11:10:160
3200899160,15cyclictest26145-21ntp_kernel_err08:50:190
3200899160,15cyclictest230052chrt09:42:460
3200899160,15cyclictest14450-21apache_volume12:20:110
3200899160,15cyclictest11698-21apache_accesses12:15:120
3200899160,15cyclictest0-21swapper/010:10:150
3200899160,15cyclictest0-21swapper/009:50:210
3200899160,15cyclictest0-21swapper/009:50:200
3200899160,15cyclictest0-21swapper/009:33:190
3200899160,15cyclictest0-21swapper/008:30:240
3200899150,1cyclictest0-21swapper/007:15:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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