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2026-08-08 - 04:50
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Sat Aug 08, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26126992313,9cyclictest19298-21php7.000:39:000
2612799220,21cyclictest843-21systemd-network20:25:431
2612699220,21cyclictest843-21systemd-network20:36:300
2613199214,16cyclictest2069-21systemd-udevd00:20:512
2613199210,20cyclictest870-21systemd-logind20:56:532
2612699210,20cyclictest843-21systemd-network20:34:280
2613199202,17cyclictest0-21swapper/222:25:142
26131992017,2cyclictest4723-21chrt19:26:502
26127992019,0cyclictest0-21swapper/120:40:161
26127992018,1cyclictest21-21ksoftirqd/122:11:231
2612799200,19cyclictest843-21systemd-network20:17:581
2612799200,17cyclictest3976-21H222:10:211
26126992016,3cyclictest0-21swapper/022:52:360
2613199193,15cyclictest0-21swapper/219:20:142
2613199192,1cyclictest3985-21H222:10:212
2613199192,16cyclictest3991-21H222:10:212
2613199190,3cyclictest24284-21tail23:50:162
2613199190,2cyclictest3976-21H222:10:212
2613199190,17cyclictest3983-21H222:10:212
2613199190,16cyclictest3991-21H222:10:212
2613199190,16cyclictest3989-21H222:10:212
2613199190,16cyclictest3989-21H222:10:212
2613199190,16cyclictest3989-21H222:10:212
2613199190,16cyclictest3983-21H222:10:212
2612799197,11cyclictest0-21swapper/100:32:571
2612799193,15cyclictest3991-21H222:10:211
26127991917,1cyclictest0-21swapper/100:10:001
26127991916,2cyclictest24792-21tr20:05:141
26127991913,5cyclictest0-21swapper/121:00:151
2612699192,2cyclictest30735-21grep22:10:120
2612699191,17cyclictest21448-21cut20:55:150
2612699190,16cyclictest3989-21H222:10:210
2612699190,16cyclictest3985-21H222:10:210
2612699190,16cyclictest0-21swapper/019:25:140
2613199183,1cyclictest0-21swapper/222:22:582
2613199182,9cyclictest24282-21perf22:00:012
2613199182,15cyclictest792-21processes00:05:172
2613199182,15cyclictest0-21swapper/222:00:072
26131991817,1cyclictest28-21ksoftirqd/223:11:422
26131991815,2cyclictest27861-21nfsd423:00:172
26131991814,3cyclictest3981-21H222:10:212
26131991814,2cyclictest3985-21H222:10:212
2613199180,2cyclictest4099-21H222:10:212
2613199180,2cyclictest3987-21H222:10:212
2613199180,2cyclictest3987-21H222:10:212
2613199180,2cyclictest3985-21H222:10:212
2613199180,2cyclictest3981-21H222:10:212
2613199180,2cyclictest3981-21H222:10:212
2613199180,2cyclictest24135-21df_inode21:00:142
2613199180,17cyclictest4035-21H222:10:212
2613199180,17cyclictest3991-21H222:10:212
2613199180,17cyclictest3979-21H222:10:212
2613199180,17cyclictest1511-21/usr/sbin/munin22:15:112
2613199180,16cyclictest3985-21H222:10:212
2613199180,16cyclictest3976-21H222:10:212
2612799182,1cyclictest12149-21cpuspeed_turbos23:30:121
2612799182,15cyclictest3979-21H222:10:211
26127991816,1cyclictest0-21swapper/122:40:171
26127991816,1cyclictest0-21swapper/121:40:321
26127991816,1cyclictest0-21swapper/100:21:351
26127991815,2cyclictest7862-21grep20:30:181
26127991815,2cyclictest3979-21H222:10:211
26127991814,3cyclictest3983-21H222:10:211
26127991814,3cyclictest14550-21snapd19:17:581
2612799181,2cyclictest4099-21H222:10:211
2612799181,2cyclictest4099-21H222:10:211
2612799181,2cyclictest3085-21postgres23:43:231
2612799181,15cyclictest0-21swapper/100:15:141
2612799180,2cyclictest4099-21H222:10:211
2612799180,2cyclictest3985-21H222:10:211
2612799180,17cyclictest3985-21H222:10:211
2612799180,17cyclictest21813-21fschecks_count22:50:131
2612799180,17cyclictest1894-21who23:10:201
26126991816,1cyclictest9-21ksoftirqd/022:56:460
26126991815,2cyclictest1348-21lxd22:44:500
26126991814,3cyclictest3987-21H222:10:210
26126991814,3cyclictest3987-21H222:10:210
26126991814,3cyclictest3987-21H222:10:210
2612699180,3cyclictest11874-21apt-get23:30:020
2612699180,2cyclictest3989-21H222:10:210
2612699180,2cyclictest3981-21H222:10:210
2612699180,2cyclictest3976-21H222:10:210
2612699180,1cyclictest0-21swapper/021:05:220
2612699180,17cyclictest3989-21H222:10:210
2612699180,17cyclictest3985-21H222:10:210
2612699180,17cyclictest23117-21needreboot21:55:170
2612699180,16cyclictest3985-21H222:10:210
2612699180,16cyclictest0-21swapper/021:41:530
2612699180,15cyclictest4099-21H222:10:210
26131991715,1cyclictest0-21swapper/223:45:202
26131991714,2cyclictest9164-21expr23:25:122
26131991714,2cyclictest4235-21expr20:25:142
26131991714,2cyclictest3981-21H222:10:212
26131991714,2cyclictest3979-21H222:10:212
26131991714,2cyclictest2007-21systemd-journal23:30:342
26131991713,3cyclictest3981-21H222:10:212
2613199171,15cyclictest4258-21sendmail_mailtr21:20:202
2613199171,15cyclictest173522sleep220:46:112
2613199170,2cyclictest4099-21H222:10:212
2613199170,2cyclictest4035-21H222:10:212
2613199170,2cyclictest4035-21H222:10:212
2613199170,2cyclictest14996-21grep23:35:142
2613199170,1cyclictest4099-21H222:10:212
2613199170,1cyclictest3981-21H222:10:212
2613199170,16cyclictest863-21avahi-daemon21:10:202
2613199170,16cyclictest5522-21cpuspeed_turbos19:30:132
2613199170,16cyclictest4157-21kernelversion00:10:152
2613199170,16cyclictest4099-21H222:10:212
2613199170,16cyclictest3985-21H222:10:212
2613199170,16cyclictest3983-21H222:10:212
2613199170,16cyclictest3981-21H222:10:212
2613199170,16cyclictest28487-21kernelversion20:10:162
2613199170,16cyclictest20456-21nfsd419:55:182
2613199170,16cyclictest20208-21ls21:50:172
2613199170,16cyclictest17702-21netstat21:45:182
2613199170,16cyclictest0-21swapper/223:55:142
2612799172,1cyclictest21-21ksoftirqd/100:00:311
26127991714,2cyclictest8700-21df_inode21:30:131
26127991714,2cyclictest673-21taskset21:15:171
26127991714,2cyclictest3991-21H222:10:211
26127991714,2cyclictest29939-21sendmail-mta22:07:311
26127991714,2cyclictest27181-21chrt21:05:161
26127991714,2cyclictest23878-21/usr/sbin/munin22:55:121
26127991714,2cyclictest16335-21systemctl23:35:201
26127991714,2cyclictest14499-21snapd20:10:031
26127991714,2cyclictest13498-21fw_packets22:35:131
26127991713,3cyclictest7579-21smartctl23:20:181
2612799171,15cyclictest3987-21H222:10:211
2612799171,15cyclictest0-21swapper/123:55:011
2612799171,15cyclictest0-21swapper/122:15:011
2612799170,2cyclictest3983-21H222:10:211
2612799170,2cyclictest3981-21H222:10:211
2612799170,2cyclictest21378-21df20:55:141
2612799170,2cyclictest20512-21grep21:50:171
2612799170,2cyclictest19327-21grep19:55:131
2612799170,2cyclictest11533-21cron20:39:001
2612799170,16cyclictest8903-21apt-get23:25:111
2612799170,16cyclictest4099-21H222:10:211
2612799170,16cyclictest3989-21H222:10:211
2612799170,16cyclictest3989-21H222:10:211
2612799170,16cyclictest3987-21H222:10:211
2612799170,16cyclictest3985-21H222:10:211
2612799170,16cyclictest3983-21H222:10:211
2612799170,16cyclictest3327-21/usr/sbin/munin19:25:161
2612799170,16cyclictest22436-21bounce23:46:391
2612799170,16cyclictest22229-21expr21:55:141
2612799170,16cyclictest0-21swapper/121:20:161
2612799170,16cyclictest0-21swapper/120:45:131
2612799170,15cyclictest3976-21H222:10:211
26126991715,1cyclictest0-21swapper/019:41:370
26126991714,2cyclictest9262-21expr00:20:140
26126991714,2cyclictest4099-21H222:10:210
26126991714,2cyclictest4099-21H222:10:210
26126991714,2cyclictest4035-21H222:10:210
26126991714,2cyclictest3979-21H222:10:210
26126991714,2cyclictest3184-21sed21:20:150
26126991714,2cyclictest26649-21expr23:55:120
26126991714,2cyclictest25639-21ls20:05:170
26126991714,2cyclictest17267-21munin-run23:39:590
26126991714,2cyclictest1516-21lxd20:22:500
26126991714,2cyclictest10148-21cat22:30:120
2612699171,15cyclictest9-21ksoftirqd/020:18:520
2612699170,2cyclictest8176-21cpuspeed_turbos21:30:120
2612699170,2cyclictest7358-21apt-get22:25:110
2612699170,2cyclictest65982sleep021:25:200
2612699170,2cyclictest6141-21idleruntime19:30:150
2612699170,2cyclictest3991-21H222:10:210
2612699170,2cyclictest3989-21H222:10:210
2612699170,2cyclictest3976-21H222:10:210
2612699170,2cyclictest2007-21systemd-journal21:10:090
2612699170,2cyclictest12799-21apache_volume22:35:110
2612699170,16cyclictest715-21ntpq00:05:180
2612699170,16cyclictest6637-21grep00:15:140
2612699170,16cyclictest6175-21taskset23:20:110
2612699170,16cyclictest5581-21readlink23:20:000
2612699170,16cyclictest3991-21H222:10:210
2612699170,16cyclictest3991-21H222:10:210
2612699170,16cyclictest3985-21H222:10:210
2612699170,16cyclictest3985-21H222:10:210
2612699170,16cyclictest3976-21H222:10:210
2612699170,16cyclictest3439-21expr00:10:130
2612699170,16cyclictest31707-21cron23:09:000
2612699170,16cyclictest25254-21chrt23:52:460
2612699170,16cyclictest21447-21/usr/sbin/munin23:45:200
2612699170,16cyclictest19792-21awk22:45:170
2612699170,16cyclictest19236-21awk23:40:200
2612699170,16cyclictest14499-21snapd19:55:290
2612699170,16cyclictest13722-21readlink20:40:200
2612699170,16cyclictest0-21swapper/000:00:160
26131991614,1cyclictest0-21swapper/220:00:122
2613199160,15cyclictest19441-21ntpq20:50:182
2613199160,15cyclictest0-21swapper/221:35:182
26127991614,1cyclictest0-21swapper/119:30:131
26127991614,1cyclictest0-21swapper/100:10:121
26127991613,2cyclictest23331-21grep23:50:121
2612799160,2cyclictest27597-21grep19:10:171
2612799160,1cyclictest0-21swapper/122:30:141
2612799160,15cyclictest0-21swapper/119:45:151
26126991614,1cyclictest0-21swapper/021:00:160
26126991614,1cyclictest0-21swapper/019:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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