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2026-01-11 - 04:45
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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 Sun Jan 11, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13019992514,10cyclictest22394-21perf23:15:011
13027992424,0cyclictest0-21swapper/222:47:092
1302799220,8cyclictest0-21swapper/219:50:152
1302799220,8cyclictest0-21swapper/200:35:162
1301899220,21cyclictest843-21systemd-network19:57:250
1302799203,16cyclictest0-21swapper/220:33:022
13027992016,1cyclictest0-21swapper/223:44:212
1301899204,15cyclictest0-21swapper/000:32:390
13018992014,3cyclictest0-21swapper/021:26:270
1302799192,3cyclictest0-21swapper/220:00:002
1302799192,16cyclictest21492-21chrt19:24:512
1302799192,16cyclictest19665-21turbostat23:10:012
1302799192,16cyclictest11625-21cstates22:55:122
1302799192,16cyclictest0-21swapper/223:15:282
1302799192,16cyclictest0-21swapper/221:39:342
13027991917,1cyclictest0-21swapper/220:10:142
13027991916,2cyclictest9739-21cat23:49:552
1302799191,3cyclictest0-21swapper/222:20:502
13027991913,5cyclictest0-21swapper/219:37:522
1302799191,1cyclictest0-21swapper/222:09:542
1302799190,18cyclictest13212-21expr23:55:132
1302799190,18cyclictest0-21swapper/200:04:302
1301999193,15cyclictest0-21swapper/100:05:571
13019991919,0cyclictest0-21swapper/122:08:591
13019991917,1cyclictest0-21swapper/121:10:171
1301999190,18cyclictest0-21swapper/119:52:011
1301999190,17cyclictest2007-21systemd-journal22:45:581
13018991916,2cyclictest17668-21nfsd419:15:170
1302799182,1cyclictest59162sleep221:47:402
1302799182,15cyclictest5139-21cat20:50:002
1302799182,15cyclictest27233-21acpi00:20:102
1302799182,15cyclictest20424-21latency_hist22:15:002
13027991815,2cyclictest31343-21cstates23:30:132
13027991815,2cyclictest26962-21ntpq23:20:202
13027991815,2cyclictest10476-21basename21:00:012
1302799181,2cyclictest2988-21nvmesmart_nvme023:35:182
1302799181,2cyclictest26202-21grep19:30:212
1302799181,2cyclictest14812-21nfsd421:05:182
1302799181,16cyclictest18985-21cut00:05:152
1302799180,2cyclictest16322-21chmod19:15:012
1302799180,17cyclictest642-21egrep21:40:122
1302799180,17cyclictest14724-21find20:08:592
1302799180,17cyclictest0-21swapper/222:50:212
1302799180,17cyclictest0-21swapper/220:40:152
1302799180,16cyclictest16444-21python323:05:012
1302799180,0cyclictest0-21swapper/221:20:012
1301999182,1cyclictest0-21swapper/123:58:401
13019991817,1cyclictest0-21swapper/120:35:121
13019991814,3cyclictest1485-21snapd20:55:081
13019991814,3cyclictest0-21swapper/122:25:301
13018991815,2cyclictest604-21needreboot20:40:170
13018991811,6cyclictest0-21swapper/021:49:010
1301899180,4cyclictest0-21swapper/023:26:490
1302799172,1cyclictest249702sleep200:15:162
13027991714,2cyclictest9249-21apache_volume21:55:112
13027991714,2cyclictest580-21/usr/sbin/munin19:45:132
13027991714,2cyclictest29283-21timerwakeupswit21:30:232
13027991714,2cyclictest28909-21fschecks_count23:25:132
13027991714,2cyclictest22717-21cat19:25:162
13027991714,2cyclictest22290-21awk22:15:202
13027991714,2cyclictest0-21swapper/220:00:162
1302799170,2cyclictest6230-21/usr/sbin/munin20:50:162
1302799170,2cyclictest32329-21cat22:35:192
1302799170,2cyclictest31657-21grep19:40:202
1302799170,2cyclictest28096-21timerandwakeup22:25:232
1302799170,2cyclictest24398-21/usr/sbin/munin20:25:162
1302799170,2cyclictest21128-21cat20:20:152
1302799170,2cyclictest18467-21expr20:15:152
1302799170,2cyclictest17099-21cut21:10:142
1302799170,2cyclictest13668-21cstates19:10:132
1302799170,2cyclictest11546-21fschecks_time21:00:162
1302799170,2cyclictest1079-21cups-browsed00:25:212
1302799170,1cyclictest0-21swapper/223:50:122
1302799170,16cyclictest7775-21grep21:50:192
1302799170,16cyclictest399-20systemd-journal22:00:102
1302799170,16cyclictest3971-21nfsd422:40:202
1302799170,16cyclictest29989-21sort22:30:152
1302799170,16cyclictest29416-21cstates20:35:142
1302799170,16cyclictest22769-21ntp_states00:10:182
1302799170,16cyclictest22565-21grep21:20:142
1302799170,16cyclictest21657-21cat23:10:202
1301999172,1cyclictest0-21swapper/119:50:021
13019991715,1cyclictest6922chrt23:32:051
13019991715,1cyclictest0-21swapper/119:10:131
13019991714,2cyclictest9852-21fschecks_count21:55:151
13019991714,2cyclictest32135-21cut20:40:141
13019991714,2cyclictest29869-21awk23:25:201
13019991714,2cyclictest28971-21plymouth19:35:201
13019991714,2cyclictest26634-21taskset21:25:351
13019991714,2cyclictest1550-21snapd22:15:081
13019991712,4cyclictest399-20systemd-journal22:20:151
1301999170,2cyclictest3985-21H222:10:211
1301999170,2cyclictest3912-21expr00:35:151
1301999170,2cyclictest27065-21processes23:20:221
1301999170,2cyclictest2286-21sendmail_mailqu21:40:191
1301999170,2cyclictest16699-21apt-config23:05:001
1301999170,2cyclictest1516-21lxd22:12:331
1301999170,2cyclictest13844-21tr20:05:191
1301999170,16cyclictest8207-21nfsd419:55:191
1301999170,16cyclictest7072-21sort20:50:211
1301999170,16cyclictest399-20systemd-journal23:40:011
1301999170,16cyclictest3912-21cpuspeed_turbos21:45:131
1301999170,16cyclictest32167-21cat22:35:191
1301999170,16cyclictest26891-21munin-run00:20:011
1301999170,16cyclictest20609-21nvmesmart_nvme021:15:181
1301999170,16cyclictest17215-21idleruntime19:15:131
1301999170,16cyclictest16282-21fschecks_count00:00:151
1301999170,16cyclictest1484-21snapd21:25:001
1301999170,16cyclictest1448-21find23:35:091
1301999170,16cyclictest13436-21uname22:00:171
1301999170,16cyclictest12362-21sed22:55:161
1301999170,15cyclictest0-21swapper/120:30:171
13018991715,1cyclictest0-21swapper/020:30:220
13018991714,2cyclictest11250-21expr21:00:140
13018991713,3cyclictest0-21swapper/022:00:130
1301899171,15cyclictest1478-21snapd22:50:190
1301899170,2cyclictest27450-21cpuspeed_turbos21:30:130
1301899170,2cyclictest2603-21cpuspeed_turbos22:40:140
1301899170,2cyclictest23393-21/usr/sbin/munin23:15:150
1301899170,2cyclictest15558-21/usr/sbin/munin23:00:190
1301899170,2cyclictest1484-21snapd23:05:080
1301899170,2cyclictest1279-21fschecks_count19:45:140
1301899170,2cyclictest11703-21expr22:55:130
1301899170,16cyclictest8166-21apt-config22:50:000
1301899170,16cyclictest6910-21chrt23:43:260
1301899170,16cyclictest6705-21awk20:50:190
1301899170,16cyclictest5186-21latency_hist20:50:010
1301899170,16cyclictest3609-21munin-run21:45:010
1301899170,16cyclictest16912-21nfsd400:00:170
1301899170,16cyclictest16893-21expr21:10:120
1301899170,16cyclictest12439-21/usr/sbin/munin20:05:220
1301899170,16cyclictest0-21swapper/020:14:040
1302799160,2cyclictest26030-21expr21:25:182
1302799160,1cyclictest1438-21/usr/sbin/munin00:30:172
13019991614,1cyclictest9231-21sed23:45:221
13019991614,1cyclictest0-21swapper/123:50:101
13019991614,1cyclictest0-21swapper/122:40:141
13019991614,1cyclictest0-21swapper/122:30:201
13019991614,1cyclictest0-21swapper/121:40:021
13019991614,1cyclictest0-21swapper/120:20:151
13019991614,1cyclictest0-21swapper/119:30:221
13019991614,1cyclictest0-21swapper/100:25:111
1301999161,14cyclictest0-21swapper/121:30:151
1301999160,2cyclictest898-21df00:30:131
1301999160,1cyclictest1375-21munin-node00:20:111
1301999160,1cyclictest0-21swapper/120:00:211
1301999160,1cyclictest0-21swapper/100:10:181
1301999160,16cyclictest0-21swapper/120:28:041
1301999160,15cyclictest8978-21expr22:50:131
1301999160,15cyclictest6618-21cpuspeed_turbos21:50:141
1301999160,15cyclictest30631-21cat19:40:141
1301999160,15cyclictest0-21swapper/123:15:161
1301999160,15cyclictest0-21swapper/123:05:141
1301999160,15cyclictest0-21swapper/121:10:001
1301999160,15cyclictest0-21swapper/120:45:141
1301999160,15cyclictest0-21swapper/120:10:191
1301999160,15cyclictest0-21swapper/119:25:181
1301999160,15cyclictest0-21swapper/119:20:131
13018991614,1cyclictest8111-21apache_accesses20:55:100
13018991614,1cyclictest18152-21grep20:15:140
13018991614,1cyclictest14667-21awk19:10:170
13018991614,1cyclictest0-21swapper/023:20:170
13018991614,1cyclictest0-21swapper/023:10:210
13018991614,1cyclictest0-21swapper/022:35:200
13018991614,1cyclictest0-21swapper/021:50:170
13018991614,1cyclictest0-21swapper/021:35:190
13018991614,1cyclictest0-21swapper/021:05:230
13018991614,1cyclictest0-21swapper/019:30:140
13018991614,1cyclictest0-21swapper/019:25:130
13018991614,1cyclictest0-21swapper/000:35:120
13018991614,1cyclictest0-21swapper/000:05:150
13018991613,2cyclictest22637-21fschecks_time21:20:150
13018991613,2cyclictest1438-21/usr/sbin/munin23:35:090
1301899160,2cyclictest8294-21/usr/sbin/munin23:45:160
1301899160,1cyclictest0-21swapper/022:20:080
1301899160,15cyclictest455-21plymouthd22:15:140
1301899160,15cyclictest3981-21H222:10:210
1301899160,15cyclictest30127-21sed22:30:160
1301899160,15cyclictest27252-21apache_accesses00:20:110
1301899160,15cyclictest25354-21awk00:15:170
1301899160,15cyclictest24314-21idleruntime20:25:170
1301899160,15cyclictest20803-21/usr/sbin/munin20:20:150
1301899160,15cyclictest15630-21expr22:05:130
1301899160,15cyclictest13624-21smartctl23:55:140
1301899160,15cyclictest11029-21nfsd420:00:190
1301899160,15cyclictest10039-21if_eno121:55:160
1301899160,15cyclictest0-21swapper/023:30:200
1301899160,15cyclictest0-21swapper/022:30:000
1301899160,15cyclictest0-21swapper/021:15:170
1301899160,15cyclictest0-21swapper/019:35:180
1301899160,15cyclictest0-21swapper/019:20:120
1301999150,14cyclictest0-21swapper/120:15:141
13018991514,1cyclictest0-21swapper/022:10:130
13018991514,1cyclictest0-21swapper/020:35:130
13018991512,2cyclictest11528-21grep23:50:170
1301899150,1cyclictest0-21swapper/019:50:140
1301899150,1cyclictest0-21swapper/019:40:110
1301899150,1cyclictest0-21swapper/000:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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