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2026-07-13 - 06:54
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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 highest latencies:
System rackdslot0.osadl.org (updated Mon Jul 13, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16039992914,14cyclictest0-21swapper/200:05:002
16039992211,8cyclictest8016-21nfsd419:50:182
1603999203,16cyclictest3985-21H222:10:212
1603999202,17cyclictest0-21swapper/223:30:212
16031992017,2cyclictest3976-21H222:10:210
1603999193,15cyclictest0-21swapper/221:55:422
1603999192,16cyclictest13413-21cat22:55:022
16039991917,1cyclictest8870-21latency20:50:172
16039991917,1cyclictest0-21swapper/223:00:002
16039991916,2cyclictest5184-21nfsd421:40:182
16039991916,2cyclictest14969-21mailstats21:00:192
16039991914,3cyclictest3987-21H222:10:212
1603999190,18cyclictest0-21swapper/219:16:562
1603999190,16cyclictest3981-21H222:10:212
1603699193,2cyclictest15154-21expr22:00:131
16036991917,1cyclictest0-21swapper/122:41:341
16036991916,2cyclictest23175-21missed_timers21:15:171
16036991915,1cyclictest0-21swapper/119:49:401
1603699190,2cyclictest3985-21H222:10:211
1603699190,1cyclictest0-21swapper/120:31:351
1603699190,1cyclictest0-21swapper/120:31:351
1603699190,17cyclictest27431-21ntpq20:25:181
1603699190,16cyclictest3981-21H222:10:211
1603199193,4cyclictest0-21swapper/019:15:160
1603199193,15cyclictest0-21swapper/019:32:090
1603199190,3cyclictest0-21swapper/022:35:160
1603199190,1cyclictest0-21swapper/023:46:210
1603199190,17cyclictest843-21systemd-network21:37:570
1603199190,17cyclictest32182-21grep20:35:150
16039991816,1cyclictest0-21swapper/222:38:232
16039991816,1cyclictest0-21swapper/222:20:152
16039991815,2cyclictest0-21swapper/220:11:332
16039991814,3cyclictest16929-21grep19:10:152
16039991813,4cyclictest3989-21H222:10:212
1603999180,3cyclictest23045-21uname21:15:182
1603999180,2cyclictest3981-21H222:10:212
1603999180,17cyclictest5168-21cpuspeed_turbos00:35:132
1603999180,17cyclictest4099-21H222:10:212
1603999180,16cyclictest3989-21H222:10:212
1603999180,16cyclictest3985-21H222:10:212
1603999180,16cyclictest3979-21H222:10:212
1603699182,15cyclictest4035-21H222:10:211
1603699182,15cyclictest21-21ksoftirqd/122:20:261
16036991816,1cyclictest21-21ksoftirqd/120:47:181
16036991816,1cyclictest13681-21mailstats23:50:201
16036991815,2cyclictest3976-21H222:10:211
16036991815,2cyclictest27004-21kernelversion00:15:171
16036991815,2cyclictest21689-21grep00:05:181
1603699180,3cyclictest2220-21cstates00:30:141
1603699180,17cyclictest3989-21H222:10:211
1603699180,17cyclictest14501-21snapd00:35:471
1603699180,17cyclictest0-21swapper/122:10:201
1603199182,15cyclictest6453-21latency_hist21:45:010
16031991816,1cyclictest9-21ksoftirqd/000:13:090
16031991816,1cyclictest0-21swapper/021:11:470
16031991814,3cyclictest3976-21H222:10:210
1603199181,16cyclictest4100-21H222:10:210
1603199180,2cyclictest0-21swapper/021:16:280
16039991715,1cyclictest0-21swapper/223:08:582
16039991715,1cyclictest0-21swapper/200:15:192
16039991714,2cyclictest31961-21switchtime21:30:212
16039991714,2cyclictest30617-21fschecks_time19:35:152
16039991714,2cyclictest26610-21threads21:20:212
16039991714,2cyclictest22711-21cut19:20:192
16039991714,2cyclictest15252-21expr20:05:152
1603999171,2cyclictest28263-21perl23:20:162
1603999170,2cyclictest3987-21H222:10:212
1603999170,2cyclictest3976-21H222:10:212
1603999170,2cyclictest31617-21grep00:25:132
1603999170,2cyclictest26222-21nvmesmart_nvme023:15:192
1603999170,2cyclictest22795-21sh00:09:002
1603999170,2cyclictest21842-21awk22:10:192
1603999170,2cyclictest2125-21cut00:30:152
1603999170,2cyclictest10130-21sort22:45:212
1603999170,1cyclictest3985-21H222:10:212
1603999170,16cyclictest5902-21ls20:45:172
1603999170,16cyclictest4099-21H222:10:212
1603999170,16cyclictest3976-21H222:10:212
1603999170,16cyclictest3351-21lxd19:28:492
1603999170,16cyclictest31874-21expr20:35:142
1603999170,16cyclictest31680-21grep22:30:142
1603999170,16cyclictest28757-21chrt20:30:042
1603999170,16cyclictest28757-21chrt20:30:042
1603999170,16cyclictest26490-21cat20:25:132
1603999170,16cyclictest19512-21cpuspeed_turbos21:10:142
1603999170,16cyclictest17657-21apache_processe22:05:122
1603999170,16cyclictest16772-21sed22:00:212
1603999170,16cyclictest10056-21fschecks_count21:50:162
1603999170,16cyclictest0-21swapper/219:30:132
1603999170,15cyclictest0-21swapper/220:15:142
1603699172,15cyclictest12467-21expr21:55:141
16036991716,1cyclictest19224-21sensors00:00:251
16036991714,2cyclictest867-21cut21:35:151
16036991714,2cyclictest4035-21H222:10:211
16036991714,2cyclictest4035-21H222:10:211
16036991714,2cyclictest3983-21H222:10:211
16036991714,2cyclictest3773-21switchtime22:35:221
16036991714,2cyclictest30955-21postgres00:23:011
16036991714,2cyclictest30955-21postgres00:23:001
16036991714,2cyclictest25666-21needreboot19:25:191
16036991714,2cyclictest14500-21snapd22:53:261
16036991713,3cyclictest3979-21H222:10:211
16036991713,3cyclictest24274-21taskset23:13:341
1603699171,15cyclictest21-21ksoftirqd/121:53:351
1603699170,2cyclictest6429-21cut23:40:001
1603699170,2cyclictest4099-21H222:10:211
1603699170,2cyclictest3976-21H222:10:211
1603699170,2cyclictest32603-21missed_timers20:35:181
1603699170,2cyclictest18980-21cut21:10:011
1603699170,2cyclictest1377-21lxd20:20:501
1603699170,2cyclictest10706-21grep19:55:201
1603699170,16cyclictest8322-21cstates20:50:141
1603699170,16cyclictest8190-21cut23:40:211
1603699170,16cyclictest575-21apache_accesses23:30:121
1603699170,16cyclictest4099-21H222:10:211
1603699170,16cyclictest4035-21H222:10:211
1603699170,16cyclictest4035-21H222:10:211
1603699170,16cyclictest4035-21H222:10:211
1603699170,16cyclictest399-20systemd-journal21:44:551
1603699170,16cyclictest3987-21H222:10:211
1603699170,16cyclictest3985-21H222:10:211
1603699170,16cyclictest3979-21H222:10:211
1603699170,16cyclictest32102-21cstates00:25:131
1603699170,16cyclictest29789-21missed_timers22:25:161
1603699170,16cyclictest2957-21rtkit-daemon22:16:251
1603699170,16cyclictest19173-21/usr/sbin/munin23:05:161
1603699170,16cyclictest14344-21tune2fs22:55:151
1603699170,16cyclictest1085-21gdbus21:30:211
1603699170,16cyclictest0-21swapper/121:30:011
16031991716,1cyclictest9-21ksoftirqd/022:32:380
16031991715,1cyclictest9-21ksoftirqd/023:58:400
16031991715,1cyclictest0-21swapper/000:05:160
16031991714,2cyclictest575-21apache_accesses23:30:130
16031991714,2cyclictest5721-21sed19:45:210
16031991714,2cyclictest3983-21H222:10:210
16031991714,2cyclictest3979-21H222:10:210
16031991714,2cyclictest31250-21grep19:35:180
16031991714,2cyclictest28272-21hddtemp_smartct23:20:150
16031991714,2cyclictest25521-21hddtemp_smartct23:15:160
16031991714,2cyclictest24619-21ls19:25:130
16031991714,1cyclictest0-21swapper/021:55:130
16031991713,3cyclictest3989-21H222:10:210
1603199171,15cyclictest9187-21latency22:45:160
1603199170,2cyclictest9195-21latency_hist23:45:010
1603199170,2cyclictest8464-21df_inode20:50:150
1603199170,2cyclictest3989-21H222:10:210
1603199170,2cyclictest3987-21H222:10:210
1603199170,2cyclictest3987-21H222:10:210
1603199170,2cyclictest3983-21H222:10:210
1603199170,2cyclictest3976-21H222:10:210
1603199170,2cyclictest3976-21H222:10:210
1603199170,2cyclictest28139-21bounce22:22:410
1603199170,2cyclictest1945-21/usr/sbin/munin00:30:140
1603199170,2cyclictest15112-21ntp_states22:55:190
1603199170,2cyclictest10865-21ls20:55:150
1603199170,16cyclictest6610-21latency_hist23:40:010
1603199170,16cyclictest3976-21H222:10:210
1603199170,16cyclictest31038-21cron00:24:010
1603199170,16cyclictest31038-21cron00:24:000
1603199170,16cyclictest28827-21awk21:25:190
1603199170,16cyclictest25462-21df21:20:130
1603199170,16cyclictest25328-21chrt22:16:560
1603199170,16cyclictest23918-21df20:20:160
1603199170,16cyclictest1870-21munin-run00:30:000
1603199170,16cyclictest17869-21apache_volume20:10:130
1603199170,16cyclictest12626-21cat22:50:210
1603199170,15cyclictest16700-21df_inode21:05:160
16039991614,1cyclictest0-21swapper/223:50:162
16039991614,1cyclictest0-21swapper/223:25:162
16039991614,1cyclictest0-21swapper/219:55:162
16039991614,1cyclictest0-21swapper/219:45:192
16039991614,1cyclictest0-21swapper/200:20:122
16039991614,1cyclictest0-21swapper/200:20:122
1603999160,2cyclictest16197-21grep21:05:142
1603999160,15cyclictest7377-21/usr/sbin/munin21:45:152
1603999160,15cyclictest3687-21apt-get23:35:142
1603999160,15cyclictest28151-21ls21:25:142
1603999160,15cyclictest0-21swapper/223:40:132
16036991614,1cyclictest28032-21cstates23:20:131
16036991614,1cyclictest0-21swapper/121:20:141
16036991613,2cyclictest31225-21latency23:25:181
1603699160,1cyclictest0-21swapper/100:10:191
1603699160,15cyclictest7957-21awk19:50:181
1603699160,15cyclictest15137-21tr20:05:151
1603699160,15cyclictest1100-21snmpd23:15:141
1603699160,15cyclictest0-21swapper/121:00:111
1603699160,15cyclictest0-21swapper/120:40:141
16031991614,1cyclictest5361-21gpgv22:40:010
16031991614,1cyclictest302952chrt21:30:010
16031991614,1cyclictest0-21swapper/023:00:130
16031991614,1cyclictest0-21swapper/022:00:140
16031991614,1cyclictest0-21swapper/020:25:130
16031991614,1cyclictest0-21swapper/020:00:120
16031991613,2cyclictest5162-21apache_volume20:45:130
1603199160,2cyclictest3983-21H222:10:210
1603199160,2cyclictest30555-21ls23:25:140
1603199160,15cyclictest7120-21expr21:45:140
1603199160,15cyclictest5610-21/usr/sbin/munin00:35:140
1603199160,15cyclictest18359-21hddtemp_smartct22:05:150
1603199160,15cyclictest0-21swapper/020:30:150
1603199160,15cyclictest0-21swapper/020:30:150
1603199160,15cyclictest0-21swapper/020:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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