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2026-03-15 - 06:19
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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 Sun Mar 15, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
362099284,4cyclictest0-21swapper/120:30:001
361799252,18cyclictest4030-21groups22:10:210
361799240,17cyclictest1100-21snmpd23:30:180
361799233,2cyclictest8875-21date22:10:000
361799230,5cyclictest0-21swapper/021:27:190
361799230,5cyclictest0-21swapper/021:27:190
361799230,22cyclictest0-21swapper/000:00:560
3625992120,0cyclictest0-21swapper/219:35:162
362599210,6cyclictest399-20systemd-journal22:45:002
362099212,16cyclictest0-21swapper/123:59:371
361799216,1cyclictest3976-21H222:10:210
3625992019,0cyclictest0-21swapper/221:30:152
362099203,15cyclictest0-21swapper/100:22:431
362599192,16cyclictest29489-21timerwakeupswit23:40:212
3625991916,2cyclictest12402-21sort23:10:222
3625991916,2cyclictest12402-21sort23:10:222
3625991916,2cyclictest10879-21cat22:10:212
362599190,18cyclictest0-21swapper/220:05:002
362599190,16cyclictest3985-21H222:10:212
362099192,2cyclictest4849-21nvmesmart_nvme022:00:181
3620991916,2cyclictest8973-21cut22:10:001
362099190,18cyclictest0-21swapper/120:34:501
362099190,18cyclictest0-21swapper/100:07:131
3617991917,1cyclictest14906-21apache_volume19:30:130
3617991916,1cyclictest0-21swapper/021:55:180
3617991914,4cyclictest0-21swapper/022:04:590
362599182,1cyclictest14224-21cpuspeed_turbos20:25:142
3625991816,1cyclictest0-21swapper/221:10:142
3625991816,1cyclictest0-21swapper/219:43:132
3625991815,2cyclictest3985-21H222:10:212
362599181,16cyclictest25705-21cpuspeed_turbos20:45:132
362599181,16cyclictest0-21swapper/220:55:212
362599180,1cyclictest0-21swapper/219:54:302
362599180,17cyclictest1515-21lxd23:00:342
362099182,2cyclictest7913-21nfsd419:15:191
362099182,1cyclictest278782sleep120:49:431
3620991815,2cyclictest30007-21switchtime20:50:211
3620991815,2cyclictest27333-21nfsd400:35:181
3620991815,2cyclictest22828-21grep21:35:171
3620991813,4cyclictest17467-21nfsd421:25:191
3620991813,4cyclictest17467-21nfsd421:25:191
362099181,2cyclictest25100-21chrt22:35:551
362099180,17cyclictest24967-21grep23:35:131
361799182,15cyclictest283062chrt22:44:430
3617991815,2cyclictest11155-21apt-key20:20:020
3617991814,3cyclictest4035-21H222:10:210
3617991814,1cyclictest0-21swapper/021:35:190
3617991813,4cyclictest2239-21nvmesmart_nvme023:50:190
361799181,16cyclictest18973-21nfsd422:25:180
361799180,16cyclictest1490-21snapd23:25:090
362599172,1cyclictest0-21swapper/223:05:162
3625991715,1cyclictest0-21swapper/220:35:172
3625991714,2cyclictest7058-21expr19:15:152
3625991714,2cyclictest6911-21cstates00:00:142
3625991714,2cyclictest4363-21expr23:55:132
3625991714,2cyclictest4323-21cat19:10:142
3625991714,2cyclictest31317-21kernelversion23:45:172
3625991714,2cyclictest3046-21chrt23:52:452
3625991714,2cyclictest29463-21cat20:50:172
3625991714,2cyclictest29200-21expr22:45:132
3625991714,2cyclictest27395-21ntp_kernel_pll_00:35:192
3625991714,2cyclictest25321-21chrt00:31:292
3625991714,2cyclictest25188-21http_loadtime21:40:142
3625991714,2cyclictest24815-21cpuspeed_turbos23:35:132
3625991714,2cyclictest23961-21which19:45:162
3625991714,2cyclictest22862-21chrt20:40:072
3625991714,2cyclictest22198-21grep21:35:142
3625991714,2cyclictest16261-21tr23:20:122
3625991714,2cyclictest16192-21nfsd422:20:172
3625991714,2cyclictest1592-21expr21:55:182
3625991714,2cyclictest13334-21uptime20:20:202
3625991714,2cyclictest10866-21pzem_current00:05:202
362599171,15cyclictest0-21swapper/220:05:122
362599170,2cyclictest993-21dbus-daemon23:30:212
362599170,2cyclictest29205-21cstates19:55:132
362599170,2cyclictest25501-21sed22:39:012
362599170,2cyclictest20865-21chrt23:26:422
362599170,2cyclictest17525-21ntp_states21:25:192
362599170,2cyclictest17525-21ntp_states21:25:192
362599170,2cyclictest13327-21pzem_voltage22:15:212
362599170,2cyclictest13327-21pzem_voltage22:15:212
362599170,2cyclictest12794-21expr00:10:132
362599170,2cyclictest10826-21df_inode21:15:152
362599170,16cyclictest8796-21expr20:15:152
362599170,16cyclictest7530-21ntpq22:05:172
362599170,16cyclictest5618-21/usr/sbin/munin20:10:132
362599170,16cyclictest5465-21if_lxdbr021:05:162
362599170,16cyclictest3991-21H222:10:212
362599170,16cyclictest326-21cut22:50:182
362599170,16cyclictest3030-21gmain00:25:282
362599170,16cyclictest2383-21expr22:55:112
362599170,16cyclictest22318-21/usr/sbin/munin22:30:212
362599170,16cyclictest13075-21apt-config21:20:012
362599170,16cyclictest1079-21cups-browsed21:45:202
362599170,16cyclictest0-21swapper/222:00:172
362599170,16cyclictest0-21swapper/200:20:172
3620991715,1cyclictest0-21swapper/122:30:311
3620991715,1cyclictest0-21swapper/119:36:231
3620991714,2cyclictest5026-21missed_timers19:10:181
3620991714,2cyclictest31563-21grep22:50:141
3620991714,2cyclictest22024-21proc_pri00:25:201
3620991714,2cyclictest21206-21grep20:35:181
3620991714,2cyclictest12815-21fschecks_count19:25:151
3620991714,1cyclictest0-21swapper/123:47:511
362099170,2cyclictest5984-21ntp_states21:05:181
362099170,2cyclictest29800-21missed_timers19:55:161
362099170,2cyclictest14759-21gdbus22:20:011
362099170,2cyclictest13688-21expr23:15:171
362099170,1cyclictest0-21swapper/122:25:181
362099170,16cyclictest811-21expr21:55:141
362099170,16cyclictest7575-21latency00:00:171
362099170,16cyclictest5525-21taskset20:10:111
362099170,16cyclictest5294-21latency_hist20:10:011
362099170,16cyclictest3987-21H222:10:211
362099170,16cyclictest3117-21sed22:55:141
362099170,16cyclictest30515-21df_inode21:50:141
362099170,16cyclictest28127-21expr23:40:141
362099170,16cyclictest26688-21smartctl19:50:141
362099170,16cyclictest15157-21cat19:30:141
362099170,16cyclictest1484-21snapd23:32:171
362099170,16cyclictest1484-21snapd23:05:091
362099170,16cyclictest14682-21apt-config22:20:011
362099170,16cyclictest14682-21apt-config22:20:011
362099170,16cyclictest13601-21cut21:20:111
362099170,16cyclictest10691-21awk19:20:171
361799172,15cyclictest9-21ksoftirqd/022:35:100
3617991715,1cyclictest209992sleep021:33:150
3617991715,1cyclictest18460-21cut23:25:010
3617991714,2cyclictest7165-21ls20:10:210
3617991714,2cyclictest6733-21threads23:00:210
3617991714,2cyclictest31043-21/usr/sbin/munin20:55:170
3617991714,2cyclictest29289-21expr22:45:130
3617991714,2cyclictest26680-21hddtemp_smartct19:50:140
3617991714,2cyclictest26473-21chrt21:41:080
3617991714,2cyclictest2520-21df_inode22:55:110
3617991714,2cyclictest23280-21cat20:40:140
3617991714,2cyclictest15362-21cat22:20:130
3617991714,2cyclictest14405-21expr20:25:140
3617991714,2cyclictest13472-21cpuspeed_turbos23:15:170
3617991714,2cyclictest13379-21mailstats22:15:220
3617991714,2cyclictest13379-21mailstats22:15:220
361799171,2cyclictest7507-21cat19:15:170
361799171,15cyclictest293552sleep021:48:130
361799170,3cyclictest0-21swapper/000:24:420
361799170,2cyclictest5031-21expr21:05:130
361799170,2cyclictest3989-21H222:10:210
361799170,2cyclictest32709-21awk22:50:180
361799170,2cyclictest24557-21nfsd400:30:180
361799170,2cyclictest21675-21needreboot19:40:170
361799170,2cyclictest10462-21cat00:05:170
361799170,16cyclictest455-21plymouthd20:00:130
361799170,16cyclictest3976-21H222:10:210
361799170,16cyclictest3795-21/usr/sbin/munin23:55:150
361799170,16cyclictest28614-21expr20:50:130
361799170,16cyclictest2176-21fschecks_time21:00:150
361799170,16cyclictest18639-21grep20:30:190
361799170,16cyclictest1490-21snapd00:37:170
3625991614,1cyclictest16076-21latency00:15:172
3625991614,1cyclictest0-21swapper/220:30:012
362599160,1cyclictest0-21swapper/222:25:132
362599160,16cyclictest0-21swapper/221:50:162
362599160,15cyclictest1816-21expr21:00:142
362599160,15cyclictest14000-21fschecks_time23:15:182
3620991614,1cyclictest27363-21nfsd422:40:151
3620991614,1cyclictest10144-21missed_timers22:10:171
3620991614,1cyclictest0-21swapper/123:00:141
3620991614,1cyclictest0-21swapper/122:45:201
3620991614,1cyclictest0-21swapper/121:45:141
3620991613,2cyclictest21271-21idleruntime19:40:151
3620991613,2cyclictest16724-21fschecks_count23:20:141
3620991613,1cyclictest0-21swapper/120:40:371
362099160,2cyclictest15347-21cat00:15:141
362099160,1cyclictest0-21swapper/123:10:221
362099160,1cyclictest0-21swapper/123:10:221
362099160,16cyclictest0-21swapper/100:30:211
362099160,15cyclictest9001-21ls20:15:161
362099160,15cyclictest4099-21H222:10:211
362099160,15cyclictest32278-21nfsd420:55:171
362099160,15cyclictest24899-21expr21:40:131
362099160,15cyclictest19113-21ls21:30:131
362099160,15cyclictest11688-21cat20:20:121
362099160,15cyclictest0-21swapper/121:10:211
362099160,15cyclictest0-21swapper/121:00:191
362099160,15cyclictest0-21swapper/120:00:211
362099160,15cyclictest0-21swapper/119:45:141
362099160,15cyclictest0-21swapper/100:10:141
3617991614,1cyclictest10220-21/usr/sbin/munin21:15:110
3617991614,1cyclictest0-21swapper/000:10:130
3617991613,2cyclictest27792-21cpuspeed_turbos23:40:130
3617991613,2cyclictest24936-21cpuspeed_turbos23:35:130
3617991613,2cyclictest0-21swapper/000:25:130
361799160,2cyclictest28704-21apache_accesses19:55:110
361799160,2cyclictest23239-21/usr/sbin/munin19:45:120
361799160,2cyclictest22463-21chrt22:32:100
361799160,2cyclictest0-21swapper/020:48:340
361799160,15cyclictest9602-21expr22:10:130
361799160,15cyclictest29917-21awk21:50:100
361799160,15cyclictest13785-21expr21:20:110
361799160,15cyclictest0-21swapper/023:45:140
361799160,15cyclictest0-21swapper/023:10:140
361799160,15cyclictest0-21swapper/023:10:140
361799160,15cyclictest0-21swapper/023:10:000
361799160,15cyclictest0-21swapper/021:10:180
361799160,15cyclictest0-21swapper/020:35:170
361799160,15cyclictest0-21swapper/000:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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