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2026-03-11 - 09:06
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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 Wed Mar 11, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21207992423,0cyclictest0-21swapper/223:45:152
2120699225,8cyclictest0-21swapper/119:39:421
21206992220,2cyclictest0-21swapper/123:31:501
21206992219,2cyclictest4099-21H222:10:211
2120599220,20cyclictest399-20systemd-journal00:24:010
2120599214,16cyclictest0-21swapper/020:12:590
21205992117,3cyclictest0-21swapper/000:15:010
2120799203,15cyclictest0-21swapper/200:31:212
21207992017,2cyclictest13595-21head23:40:182
21207992016,3cyclictest0-21swapper/219:47:292
2120799201,17cyclictest3976-21H222:10:212
21206992017,2cyclictest3983-21H222:10:211
2120699201,1cyclictest0-21swapper/120:35:171
2120699201,1cyclictest0-21swapper/120:35:161
2120799193,15cyclictest13823-21date00:40:002
2120799192,3cyclictest0-21swapper/220:26:222
21207991916,2cyclictest0-21swapper/223:50:122
21207991914,4cyclictest0-21swapper/219:29:102
2120799190,4cyclictest17435-21fschecks_time22:50:152
2120799190,1cyclictest0-21swapper/222:45:122
21206991917,1cyclictest0-21swapper/120:25:111
21206991917,1cyclictest0-21swapper/119:17:571
21206991916,2cyclictest3987-21H222:10:211
2120699190,2cyclictest3981-21H222:10:211
21205991917,1cyclictest0-21swapper/020:46:540
2120599190,2cyclictest3989-21H222:10:210
2120799182,1cyclictest257102sleep200:00:342
21207991816,1cyclictest28-21ksoftirqd/220:45:432
21207991814,3cyclictest3030-21gmain19:34:242
21207991814,1cyclictest0-21swapper/223:34:112
2120799181,16cyclictest21288-21expr23:55:142
2120799180,3cyclictest3351-21lxd22:24:342
2120799180,3cyclictest0-21swapper/219:57:382
2120799180,17cyclictest6087-21expr00:25:132
2120799180,16cyclictest23393-21cpuspeed_turbos20:10:142
21206991817,1cyclictest21-21ksoftirqd/100:01:011
21206991815,2cyclictest27771-21timerwakeupswit20:15:231
21206991815,2cyclictest21881-21mailstats20:05:221
21206991814,3cyclictest0-21swapper/122:06:081
2120699181,2cyclictest17182-21chrt23:46:321
2120599182,15cyclictest0-21swapper/023:08:080
21205991816,1cyclictest9-21ksoftirqd/019:39:070
21205991816,1cyclictest10105-21switchtime22:35:200
21205991814,3cyclictest7389-21fschecks_count23:30:130
2120599181,16cyclictest27591-21grep19:20:150
2120599180,3cyclictest1348-21lxd23:50:350
2120599180,2cyclictest3979-21H222:10:210
2120599180,17cyclictest3976-21H222:10:210
2120599180,17cyclictest18457-21cut21:55:140
2120599180,16cyclictest29256-21fschecks_count20:20:150
2120599180,16cyclictest0-21swapper/022:54:520
2120599180,15cyclictest3989-21H222:10:210
2120799172,1cyclictest0-21swapper/220:35:222
2120799172,1cyclictest0-21swapper/220:35:222
2120799172,15cyclictest28-21ksoftirqd/223:13:292
21207991716,1cyclictest3985-21H222:10:212
21207991715,1cyclictest0-21swapper/221:05:002
21207991714,2cyclictest4471-21pzem_voltage22:25:192
21207991714,2cyclictest4099-21H222:10:212
21207991714,2cyclictest30554-21apache_processe23:15:112
21207991714,2cyclictest28769-21cpuspeed_turbos20:20:142
21207991714,2cyclictest28528-21proc_pri21:15:212
21207991714,2cyclictest25549-21netstat21:10:172
21207991714,2cyclictest12965-21awk19:50:192
21207991714,2cyclictest10834-21cron22:40:002
21207991714,2cyclictest10370-21tune2fs21:40:162
21207991713,3cyclictest2007-21systemd-journal20:06:452
21207991712,4cyclictest8399-21latency_hist19:45:002
2120799171,15cyclictest243142chrt23:02:272
2120799170,2cyclictest4634-21expr00:20:212
2120799170,2cyclictest3985-21H222:10:212
2120799170,2cyclictest3707-21master20:33:502
2120799170,2cyclictest25444-21nfsd419:15:182
2120799170,2cyclictest25006-21wc23:05:132
2120799170,2cyclictest23680-21latency_hist22:05:012
2120799170,2cyclictest14721-21/usr/sbin/munin20:50:202
2120799170,2cyclictest13052-21df21:45:122
2120799170,2cyclictest10883-21grep23:35:192
2120799170,16cyclictest8056-21expr20:40:142
2120799170,16cyclictest4359-21tune2fs21:30:142
2120799170,16cyclictest3985-21H222:10:212
2120799170,16cyclictest27123-21expr22:10:132
2120799170,16cyclictest27013-21expr00:05:142
2120799170,16cyclictest27013-21expr00:05:142
2120799170,16cyclictest2361-21anvil21:27:202
2120799170,16cyclictest21649-21cpuspeed_turbos19:10:142
2120799170,16cyclictest17775-21munin-plugin-st21:55:002
2120799170,16cyclictest13885-21latency_hist22:45:002
2120699172,1cyclictest0-21swapper/120:56:011
21206991715,1cyclictest118052sleep121:41:531
21206991714,2cyclictest3979-21H222:10:211
21206991714,2cyclictest3246-21master23:22:281
21206991714,2cyclictest28413-21grep21:15:191
21206991714,2cyclictest19633-21unattended-upgr20:02:131
21206991714,2cyclictest16792-21awk21:50:201
21206991714,2cyclictest1300-21lxd20:34:491
21206991714,2cyclictest11640-21expr22:40:121
21206991714,2cyclictest0-21swapper/123:40:131
2120699170,2cyclictest5884-21cpuspeed_turbos00:25:131
2120699170,2cyclictest4099-21H222:10:211
2120699170,2cyclictest28930-21expr20:20:141
2120699170,2cyclictest23365-21tr20:10:141
2120699170,2cyclictest14633-21fschecks_count22:45:131
2120699170,2cyclictest1348-21lxd23:26:341
2120699170,16cyclictest4356-21ntp_kernel_err00:20:181
2120699170,16cyclictest3981-21H222:10:211
2120699170,16cyclictest3058-21rs:main1
2120699170,16cyclictest2567-21cron21:30:011
2120699170,16cyclictest25546-21fschecks_count23:05:151
2120699170,16cyclictest22179-21sed23:00:011
2120699170,16cyclictest1551-21snapd00:17:391
2120699170,16cyclictest1550-21snapd22:10:091
2120699170,16cyclictest14520-21smtp21:46:481
21205991715,1cyclictest21302-21expr22:00:120
21205991715,1cyclictest145912sleep023:43:180
21205991715,1cyclictest0-21swapper/022:57:330
21205991714,2cyclictest3991-21H222:10:210
21205991714,1cyclictest0-21swapper/022:10:170
2120599170,3cyclictest0-21swapper/019:56:160
2120599170,2cyclictest6473-21if_enp1s022:30:150
2120599170,2cyclictest32376-21cpuspeed_turbos00:15:140
2120599170,2cyclictest15945-21lxd00:00:340
2120599170,2cyclictest1483-21snapd20:42:200
2120599170,2cyclictest11987-21munin-run23:40:000
2120599170,1cyclictest0-21swapper/020:54:510
2120599170,1cyclictest0-21swapper/020:33:270
2120599170,16cyclictest4068-21expr21:30:130
2120599170,16cyclictest3981-21H222:10:210
2120599170,16cyclictest32014-21chrt21:23:340
2120599170,16cyclictest29845-21cpuspeed_turbos19:25:130
2120599170,16cyclictest26105-21php7.022:09:010
2120599170,16cyclictest20416-21cpuspeed_turbos20:05:130
2120599170,16cyclictest1636-21fschecks_count23:20:130
2120599170,16cyclictest14884-21if_lxdbr022:45:140
2120599170,16cyclictest13650-21ls00:40:000
2120599170,16cyclictest12242-21cat21:45:000
2120599170,16cyclictest0-21swapper/022:44:540
21207991614,1cyclictest0-21swapper/223:25:162
21207991614,1cyclictest0-21swapper/222:15:142
21207991614,1cyclictest0-21swapper/221:20:102
21207991614,1cyclictest0-21swapper/221:05:182
21207991614,1cyclictest0-21swapper/220:15:152
21207991614,1cyclictest0-21swapper/200:10:162
21207991613,2cyclictest7421-21expr21:35:142
21207991613,2cyclictest2322-21expr23:20:172
2120799160,15cyclictest399-20systemd-journal20:00:022
2120799160,15cyclictest0-21swapper/222:05:142
2120799160,15cyclictest0-21swapper/221:55:022
2120799160,15cyclictest0-21swapper/200:15:152
21206991614,1cyclictest0-21swapper/123:36:391
21206991614,1cyclictest0-21swapper/123:10:121
21206991614,1cyclictest0-21swapper/119:50:211
21206991614,1cyclictest0-21swapper/100:10:171
21206991613,2cyclictest16754-21egrep22:50:141
21206991613,2cyclictest15945-21lxd22:28:341
21206991613,2cyclictest10335-21chrt22:35:281
2120699160,2cyclictest7373-21expr21:35:141
2120699160,1cyclictest25579-21awk21:10:171
2120699160,1cyclictest0-21swapper/123:50:121
2120699160,1cyclictest0-21swapper/123:15:131
2120699160,1cyclictest0-21swapper/122:30:161
2120699160,1cyclictest0-21swapper/121:55:011
2120699160,1cyclictest0-21swapper/100:35:141
2120699160,15cyclictest9827-21ntp_offset00:30:181
2120699160,15cyclictest4099-21H222:10:211
2120699160,15cyclictest3979-21H222:10:211
2120699160,15cyclictest32288-21cpuspeed_turbos22:20:131
2120699160,15cyclictest22645-21readlink22:00:211
2120699160,15cyclictest21406-21expr23:55:141
2120699160,15cyclictest19438-21idleruntime21:00:141
2120699160,15cyclictest0-21swapper/122:15:141
2120699160,15cyclictest0-21swapper/121:30:131
2120699160,15cyclictest0-21swapper/120:45:131
2120699160,15cyclictest0-21swapper/100:05:141
2120699160,15cyclictest0-21swapper/100:05:141
21205991614,1cyclictest3989-21H222:10:210
21205991614,1cyclictest3987-21H222:10:210
21205991614,1cyclictest11004-21latency_hist00:35:000
21205991614,1cyclictest0-21swapper/023:15:130
21205991614,1cyclictest0-21swapper/021:35:010
21205991614,1cyclictest0-21swapper/019:45:210
21205991613,2cyclictest3991-21H222:10:210
2120599161,15cyclictest0-21swapper/021:15:190
2120599160,2cyclictest29236-21smartctl23:10:190
2120599160,2cyclictest15349-21cpuspeed_turbos21:50:140
2120599160,1cyclictest16173-21expr20:55:140
2120599160,1cyclictest0-21swapper/020:25:110
2120599160,15cyclictest3450-21gsd-color21:46:200
2120599160,15cyclictest15827-21fschecks_time23:45:140
2120599160,15cyclictest1043-21if_lxdbr021:25:150
2120599160,15cyclictest0-21swapper/023:25:130
2120599160,15cyclictest0-21swapper/023:00:180
2120599160,15cyclictest0-21swapper/022:25:110
2120599160,15cyclictest0-21swapper/022:15:160
2120599160,15cyclictest0-21swapper/020:35:140
2120599160,15cyclictest0-21swapper/020:35:140
2120599160,15cyclictest0-21swapper/020:00:030
2120599160,15cyclictest0-21swapper/000:25:210
2120599160,15cyclictest0-21swapper/000:05:140
2120599160,15cyclictest0-21swapper/000:05:140
21206991514,0cyclictest0-21swapper/119:40:141
21206991513,1cyclictest22920-21smartctl23:00:141
2120599150,1cyclictest0-21swapper/020:15:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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