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2026-03-18 - 07:15
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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 Wed Mar 18, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1610399344,14cyclictest0-21swapper/221:55:162
1610399344,14cyclictest0-21swapper/221:55:162
1609499320,0cyclictest0-21swapper/023:55:040
1609499240,19cyclictest7881-21tr23:40:120
16098992312,0cyclictest0-21swapper/119:35:151
1609499230,5cyclictest0-21swapper/021:50:150
1609499220,18cyclictest0-21swapper/023:10:000
1610399210,17cyclictest0-21swapper/220:43:422
1610399210,17cyclictest0-21swapper/220:43:422
1610399204,1cyclictest0-21swapper/219:45:522
1609499202,17cyclictest16236-21cut23:55:020
1609499200,5cyclictest4039-21sshd-SshServer[22:50:110
1610399193,2cyclictest10967-21cpuspeed_turbos23:45:142
1610399193,1cyclictest22326-21http_loadtime22:10:162
16103991913,5cyclictest0-21swapper/221:08:332
1609899192,1cyclictest0-21swapper/122:51:161
16098991917,1cyclictest4632-21taskset20:40:561
16098991917,1cyclictest4632-21taskset20:40:561
1609899190,3cyclictest0-21swapper/122:12:551
1609899190,3cyclictest0-21swapper/119:47:031
1609499193,15cyclictest5635-21awk23:35:160
1609499193,15cyclictest0-21swapper/022:24:080
1609499193,15cyclictest0-21swapper/000:30:150
16094991916,2cyclictest27426-21nfsd420:25:190
16094991914,4cyclictest870-21systemd-logind22:06:520
1609499190,3cyclictest0-21swapper/023:25:110
1610399182,15cyclictest251682sleep223:11:232
16103991816,1cyclictest0-21swapper/223:30:012
16103991815,2cyclictest1522-21lxd00:08:342
16103991815,2cyclictest1522-21lxd00:08:342
1610399181,2cyclictest27860-21chrt23:16:032
1610399181,1cyclictest0-21swapper/223:09:442
1610399180,17cyclictest9391-21perf00:40:002
1609899188,6cyclictest0-21swapper/120:31:391
1609899182,15cyclictest0-21swapper/119:13:151
1609899181,16cyclictest9223-21perf19:55:011
1609899180,17cyclictest2007-21systemd-journal19:35:001
1609499183,1cyclictest0-21swapper/019:39:580
1609499182,1cyclictest8486-21cut00:35:200
1609499182,1cyclictest16147-21latency_hist21:05:000
1609499182,15cyclictest0-21swapper/022:15:120
16094991817,1cyclictest0-21swapper/023:30:200
16094991813,3cyclictest0-21swapper/023:46:090
16094991813,2cyclictest9423-21nfsd420:50:170
1609499180,17cyclictest426-21systemd-udevd22:48:520
1609499180,17cyclictest426-21systemd-udevd22:48:510
1609499180,17cyclictest4035-21H222:10:210
1609499180,15cyclictest0-21swapper/022:27:240
1610399176,0cyclictest0-21swapper/219:35:152
16103991715,1cyclictest27628-21smartctl20:25:202
16103991715,1cyclictest0-21swapper/223:00:522
16103991715,1cyclictest0-21swapper/221:45:012
16103991715,1cyclictest0-21swapper/221:10:162
16103991714,2cyclictest9552-21fschecks_time22:45:132
16103991714,2cyclictest9552-21fschecks_time22:45:132
16103991714,2cyclictest3642-21sshd21:35:582
16103991714,2cyclictest32502-21pzem_power21:30:212
16103991714,2cyclictest32502-21pzem_power21:30:202
16103991714,2cyclictest28275-21nfsd422:20:162
16103991714,2cyclictest16506-21dpkg23:55:012
16103991714,2cyclictest15326-21df22:55:132
16103991714,2cyclictest1375-21munin-node22:40:112
1610399171,15cyclictest5102sleep200:24:192
1610399170,4cyclictest1100-21snmpd00:30:172
1610399170,2cyclictest3414-21master00:12:582
1610399170,2cyclictest3414-21master00:02:582
1610399170,2cyclictest22993-21fschecks_count21:15:122
1610399170,2cyclictest16748-21snapd21:02:282
1610399170,2cyclictest1522-21lxd20:08:482
1610399170,16cyclictest8871-21pzem_current21:45:192
1610399170,16cyclictest4620-21awk22:35:172
1610399170,16cyclictest28596-21/usr/sbin/munin23:20:192
1610399170,16cyclictest27575-21sed19:30:022
1610399170,16cyclictest27049-21pzem_energy21:20:192
1610399170,16cyclictest19998-21smtp20:11:172
1610399170,16cyclictest19721-21cpuspeed_turbos19:15:132
1610399170,16cyclictest17232-21awk22:00:202
1610399170,16cyclictest13437-21cut22:50:172
16098991716,1cyclictest21-21ksoftirqd/119:24:021
16098991715,1cyclictest0-21swapper/121:28:101
16098991715,1cyclictest0-21swapper/121:05:171
16098991715,1cyclictest0-21swapper/100:30:171
16098991714,2cyclictest30762-21sed22:25:161
16098991714,2cyclictest24923-21grep22:15:131
16098991714,2cyclictest20616-21missed_timers00:00:181
16098991714,2cyclictest19021-21sed20:10:171
16098991714,2cyclictest15131-21perf22:00:001
16098991714,2cyclictest15131-21perf22:00:001
16098991714,2cyclictest13565-21apt-get21:00:131
16098991714,2cyclictest10106-21nfsd422:45:161
16098991714,2cyclictest10106-21nfsd422:45:161
16098991714,2cyclictest0-21swapper/121:10:131
16098991712,3cyclictest0-21swapper/123:24:471
1609899171,15cyclictest9366-21chrt21:46:081
1609899170,2cyclictest8873-21grep23:40:161
1609899170,2cyclictest32181-21nfsd421:30:181
1609899170,2cyclictest32181-21nfsd421:30:181
1609899170,2cyclictest27367-21chrt00:12:571
1609899170,2cyclictest26823-21fschecks_count20:25:151
1609899170,2cyclictest15078-21expr22:55:121
1609899170,1cyclictest0-21swapper/122:39:141
1609899170,16cyclictest993-21dbus-daemon23:10:201
1609899170,16cyclictest8765-21sed00:35:211
1609899170,16cyclictest6389-21sed21:40:201
1609899170,16cyclictest32329-21tune2fs20:35:151
1609899170,16cyclictest26658-21grep19:25:211
1609899170,16cyclictest23455-21missed_timers21:15:141
1609899170,16cyclictest20326-21grep23:05:131
1609899170,16cyclictest16703-21ls22:00:171
1609499172,1cyclictest0-21swapper/021:10:130
16094991715,1cyclictest0-21swapper/019:17:310
16094991714,2cyclictest23759-21ntp_states21:15:160
16094991714,2cyclictest22720-21cat00:05:140
16094991714,2cyclictest22720-21cat00:05:130
16094991714,2cyclictest2031-21irqstats00:25:160
1609499171,1cyclictest0-21swapper/023:15:140
1609499170,2cyclictest6148-21idleruntime20:45:150
1609499170,2cyclictest4099-21H222:10:210
1609499170,2cyclictest3278-21/usr/sbin/munin20:40:140
1609499170,2cyclictest3278-21/usr/sbin/munin20:40:140
1609499170,2cyclictest31404-21hddtemp_smartct00:20:150
1609499170,2cyclictest23244-21/usr/sbin/munin19:20:150
1609499170,2cyclictest22849-21nfsd422:10:200
1609499170,2cyclictest17202-21grep22:00:190
1609499170,2cyclictest1536-21tr21:35:120
1609499170,2cyclictest13504-21missed_timers20:00:170
1609499170,2cyclictest12047-21grep20:55:190
1609499170,2cyclictest11442-21timerandwakeup19:55:210
1609499170,16cyclictest7566-21/usr/sbin/munin22:40:180
1609499170,16cyclictest7461-21grep21:45:130
1609499170,16cyclictest4887-21cat21:40:130
1609499170,16cyclictest4334-21tr19:45:120
1609499170,16cyclictest30454-21chrt21:28:450
1609499170,16cyclictest29157-21nfsd400:15:170
1609499170,16cyclictest27513-21chrt00:14:560
1609499170,16cyclictest27008-21/usr/sbin/munin19:25:220
1609499170,16cyclictest26887-21awk21:20:170
1609499170,16cyclictest23522-21expr23:10:130
1609499170,16cyclictest23035-21cron20:20:010
1609499170,16cyclictest2159-21/usr/sbin/munin22:30:220
1609499170,16cyclictest19412-21ntpq20:10:190
1609499170,16cyclictest18355-21/usr/sbin/munin23:00:160
1609499170,16cyclictest17604-21awk21:05:180
1609499170,16cyclictest0-21swapper/021:32:420
1609499170,16cyclictest0-21swapper/021:32:420
1609499170,16cyclictest0-21swapper/020:34:590
1609499170,15cyclictest4099-21H222:10:210
16103991614,1cyclictest0-21swapper/223:40:142
16103991614,1cyclictest0-21swapper/220:55:152
16103991614,1cyclictest0-21swapper/220:15:412
16103991614,1cyclictest0-21swapper/220:00:152
16103991613,2cyclictest14847-21expr23:50:162
1610399160,2cyclictest30077-21sed21:25:192
1610399160,2cyclictest23576-21grep20:20:122
1610399160,2cyclictest17431-21expr19:10:132
1610399160,1cyclictest30832-21sed20:30:222
1610399160,1cyclictest0-21swapper/221:50:162
1610399160,15cyclictest5368-21apache_accesses20:45:112
1610399160,15cyclictest32421-21http_loadtime20:35:162
1610399160,15cyclictest29852-21cpuspeed_turbos22:25:132
1610399160,15cyclictest29191-21grep19:30:172
1610399160,15cyclictest27929-21/usr/sbin/munin00:15:202
1610399160,15cyclictest22333-21/usr/sbin/munin19:20:122
1610399160,15cyclictest18821-21expr22:05:152
1610399160,15cyclictest1777-21fschecks_time19:40:142
1610399160,15cyclictest0-21swapper/223:35:142
1610399160,15cyclictest0-21swapper/223:30:142
1610399160,15cyclictest0-21swapper/222:30:162
1610399160,15cyclictest0-21swapper/222:15:182
1610399160,15cyclictest0-21swapper/220:50:132
1610399160,15cyclictest0-21swapper/219:55:142
1610399160,15cyclictest0-21swapper/219:50:132
16098991614,1cyclictest0-21swapper/123:25:131
16098991614,1cyclictest0-21swapper/123:15:141
16098991614,1cyclictest0-21swapper/122:20:131
16098991614,1cyclictest0-21swapper/122:05:161
16098991614,1cyclictest0-21swapper/121:35:131
16098991614,1cyclictest0-21swapper/120:00:161
16098991614,1cyclictest0-21swapper/119:55:151
16098991613,2cyclictest17302-21expr23:55:131
16098991612,3cyclictest0-21swapper/123:45:021
1609899160,2cyclictest6456-21cat22:40:141
1609899160,2cyclictest1550-21nfsd422:30:181
1609899160,1cyclictest0-21swapper/121:20:131
1609899160,1cyclictest0-21swapper/120:50:141
1609899160,15cyclictest5957-21missed_timers23:35:181
1609899160,15cyclictest24149-21grep20:20:141
1609899160,15cyclictest1880-21ls00:25:151
1609899160,15cyclictest16317-21nfsd420:05:171
1609899160,15cyclictest0-21swapper/123:50:191
1609899160,15cyclictest0-21swapper/123:00:111
1609899160,15cyclictest0-21swapper/120:55:141
1609899160,15cyclictest0-21swapper/120:15:171
1609899160,15cyclictest0-21swapper/119:40:181
1609899160,15cyclictest0-21swapper/119:15:131
1609899160,15cyclictest0-21swapper/100:20:141
1609899160,15cyclictest0-21swapper/100:15:131
1609899160,15cyclictest0-21swapper/100:05:141
1609899160,15cyclictest0-21swapper/100:05:141
16094991614,1cyclictest0-21swapper/020:35:390
16094991614,1cyclictest0-21swapper/020:05:110
1609499160,1cyclictest0-21swapper/022:55:120
1609499160,1cyclictest0-21swapper/019:40:130
1609499160,15cyclictest19608-21cpuspeed_turbos00:00:130
1609499160,15cyclictest0-21swapper/023:20:150
1609499160,15cyclictest0-21swapper/022:35:100
1609499160,15cyclictest0-21swapper/021:55:170
1609499160,15cyclictest0-21swapper/021:55:170
1609499160,15cyclictest0-21swapper/019:30:120
1610399150,14cyclictest0-21swapper/200:25:222
16098991513,1cyclictest10283-21cpuspeed_turbos21:50:131
1609899150,1cyclictest0-21swapper/123:30:131
1609899150,14cyclictest0-21swapper/120:45:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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