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2026-05-08 - 15:02
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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 Fri May 08, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1627993229,1cyclictest0-21swapper/022:00:150
162999230,5cyclictest0-21swapper/222:16:182
162899230,5cyclictest0-21swapper/121:40:441
162899220,21cyclictest843-21systemd-network21:48:291
162899220,18cyclictest0-21swapper/122:22:491
162999212,16cyclictest0-21swapper/219:29:032
162799210,3cyclictest0-21swapper/021:07:510
162899203,2cyclictest16166-21ntp_kernel_pll_23:20:181
1628992018,1cyclictest0-21swapper/122:15:151
162799202,2cyclictest0-21swapper/022:14:090
162799200,19cyclictest0-21swapper/020:11:220
1629991915,3cyclictest14499-21snapd22:50:282
1629991913,5cyclictest0-21swapper/200:36:322
162999190,2cyclictest3985-21H222:10:212
162999190,17cyclictest2658-21latency_hist23:00:002
1628991917,1cyclictest21-21ksoftirqd/122:36:391
162899190,2cyclictest3989-21H222:10:211
162799192,3cyclictest0-21swapper/023:30:080
1627991916,2cyclictest8562-21nfsd420:15:190
1627991915,3cyclictest0-21swapper/021:01:270
1627991915,3cyclictest0-21swapper/021:01:260
162799190,18cyclictest0-21swapper/022:27:050
162999182,1cyclictest207362sleep222:31:352
162999182,0cyclictest0-21swapper/223:01:222
1629991816,1cyclictest0-21swapper/200:00:172
1629991815,2cyclictest30534-21cat20:00:002
1629991815,2cyclictest28265-21nfsd422:45:182
1629991815,2cyclictest15539-21taskset20:30:042
1629991814,3cyclictest3979-21H222:10:212
162999181,2cyclictest26535-21sed19:50:212
162999180,3cyclictest3983-21H222:10:212
162999180,2cyclictest3989-21H222:10:212
162999180,2cyclictest3987-21H222:10:212
162999180,18cyclictest0-21swapper/219:43:522
162999180,17cyclictest17229-21iwlist19:35:152
162999180,15cyclictest0-21swapper/223:10:172
162899182,15cyclictest21-21ksoftirqd/122:45:241
162899182,15cyclictest0-21swapper/122:31:171
1628991816,1cyclictest21-21ksoftirqd/123:53:171
1628991815,2cyclictest3983-21H222:10:211
1628991815,2cyclictest30879-21cut21:55:001
1628991814,3cyclictest3983-21H222:10:211
1628991814,3cyclictest10897-21python321:20:001
1628991814,3cyclictest0-21swapper/120:38:451
162899181,1cyclictest0-21swapper/122:01:591
162899181,16cyclictest24664-21idleruntime20:45:151
162899181,16cyclictest18073-21nfsd400:20:201
162899180,17cyclictest843-21systemd-network00:06:261
162899180,17cyclictest21827-21grep20:40:151
162899180,16cyclictest5442-21apt-key00:00:001
162899180,15cyclictest14421-21mailstats20:25:201
162799184,8cyclictest7326-21perf19:20:020
162799182,1cyclictest0-21swapper/000:05:190
1627991816,1cyclictest9-21ksoftirqd/019:30:190
1627991816,1cyclictest0-21swapper/021:46:510
1627991814,3cyclictest0-21swapper/023:52:580
162799181,2cyclictest3954-21VM22:10:210
162799180,2cyclictest9077-21cpuspeed_turbos23:10:130
162799180,2cyclictest3989-21H222:10:210
162799180,17cyclictest3991-21H222:10:210
1629991715,1cyclictest0-21swapper/223:30:132
1629991715,1cyclictest0-21swapper/221:15:162
1629991714,2cyclictest9869-21uname00:05:182
1629991714,2cyclictest7567-21sed21:10:202
1629991714,2cyclictest4099-21H222:10:212
1629991714,2cyclictest3987-21H222:10:212
1629991714,2cyclictest13218-21/usr/sbin/munin22:20:202
1629991714,2cyclictest12028-21apache_processe23:15:122
162999171,15cyclictest24112-21grep20:45:132
162999170,2cyclictest489-21/usr/sbin/munin21:00:152
162999170,2cyclictest489-21/usr/sbin/munin21:00:152
162999170,2cyclictest3987-21H222:10:212
162999170,2cyclictest3979-21H222:10:212
162999170,2cyclictest24710-21chrt21:40:422
162999170,2cyclictest2323-21cut23:55:142
162999170,2cyclictest1515-21lxd20:10:492
162999170,16cyclictest7959-21grep20:15:172
162999170,16cyclictest3979-21H222:10:212
162999170,16cyclictest3647-21anvil20:09:092
162999170,16cyclictest32110-21ls23:50:122
162999170,16cyclictest28730-21cat21:50:142
162999170,16cyclictest26925-21cat20:50:152
162999170,16cyclictest26260-21/usr/sbin/munin23:40:142
162999170,16cyclictest26147-21fschecks_time21:45:152
162999170,16cyclictest23323-21awk19:45:192
162999170,16cyclictest21355-21cpuspeed_turbos20:40:122
162999170,16cyclictest20980-21needreboot21:35:172
162999170,16cyclictest20668-21cron20:39:022
162999170,16cyclictest17525-21fschecks_time00:20:162
162999170,16cyclictest17503-21/usr/sbin/munin23:25:112
162999170,16cyclictest1523-21lxd19:20:492
162999170,16cyclictest14997-21ntpq19:30:182
162999170,16cyclictest14666-21expr21:25:142
162999170,16cyclictest11955-21df_inode00:10:142
162999170,16cyclictest1035-21thermald22:05:212
162999170,16cyclictest0-21swapper/221:31:252
162899172,1cyclictest21-21ksoftirqd/123:58:241
162899172,1cyclictest21-21ksoftirqd/123:43:041
1628991716,1cyclictest0-21swapper/123:09:221
1628991715,1cyclictest3991-21H222:10:211
1628991714,2cyclictest7308-21sendmail_mailqu21:10:201
1628991714,2cyclictest3979-21H222:10:211
1628991714,2cyclictest31129-21expr20:00:121
1628991714,2cyclictest26940-21expr20:50:141
1628991714,2cyclictest15437-21missed_timers21:25:171
1628991714,2cyclictest12676-21chrt23:15:141
1628991714,2cyclictest12522-21sed20:25:011
1628991714,2cyclictest11485-21fschecks_count19:25:151
162899171,15cyclictest0-21swapper/122:55:171
162899170,2cyclictest399-20systemd-journal19:45:001
162899170,2cyclictest3976-21H222:10:211
162899170,2cyclictest22252-21cat19:45:161
162899170,2cyclictest17367-21ntp_offset22:25:161
162899170,2cyclictest16493-21kernelversion20:30:161
162899170,2cyclictest1523-21lxd20:56:501
162899170,1cyclictest0-21swapper/121:02:541
162899170,1cyclictest0-21swapper/121:02:541
162899170,16cyclictest7151-21latency_hist20:15:011
162899170,16cyclictest6945-21perf22:10:011
162899170,16cyclictest3991-21H222:10:211
162899170,16cyclictest14825-21netstat19:30:191
162899170,16cyclictest0-21swapper/123:12:421
162799172,1cyclictest30817-21pluginstate20:55:190
1627991715,1cyclictest0-21swapper/019:50:140
1627991714,2cyclictest6107-21cpuspeed_turbos23:05:130
1627991714,2cyclictest4035-21H222:10:210
1627991714,2cyclictest3979-21H222:10:210
1627991714,2cyclictest3976-21H222:10:210
1627991714,2cyclictest29313-21expr23:45:140
1627991714,2cyclictest21593-21expr22:35:130
1627991714,1cyclictest0-21swapper/020:30:140
1627991713,3cyclictest843-21systemd-network00:00:150
1627991713,3cyclictest426-21systemd-udevd23:04:520
162799171,15cyclictest0-21swapper/021:25:220
162799170,2cyclictest3989-21H222:10:210
162799170,2cyclictest3976-21H222:10:210
162799170,2cyclictest29699-21cut22:50:010
162799170,2cyclictest14542-21nfsd422:20:170
162799170,2cyclictest13240-21nfsd423:15:180
162799170,1cyclictest0-21swapper/022:16:130
162799170,16cyclictest863-21avahi-daemon20:05:190
162799170,16cyclictest4990-21sed00:00:000
162799170,16cyclictest4139-21cat19:10:230
162799170,16cyclictest3989-21H222:10:210
162799170,16cyclictest3989-21H222:10:210
162799170,16cyclictest23166-21cat21:40:140
162799170,16cyclictest20467-21grep19:40:190
162799170,16cyclictest2007-21systemd-journal23:37:210
162799170,16cyclictest18426-21nfsd421:30:190
162799170,16cyclictest14499-21snapd20:00:580
162799170,16cyclictest0-21swapper/000:25:330
1629991614,1cyclictest6710-21cat19:15:232
1629991614,1cyclictest0-21swapper/223:35:142
1629991614,1cyclictest0-21swapper/222:25:102
1629991614,1cyclictest0-21swapper/200:25:142
1629991612,3cyclictest2981-21ls19:10:182
162999160,2cyclictest0-21swapper/221:05:202
162999160,15cyclictest993-21dbus-daemon20:20:202
162999160,15cyclictest25488-21grep22:40:162
162999160,15cyclictest22073-21fschecks_time22:35:152
162999160,15cyclictest12809-21/usr/sbin/munin20:25:112
162999160,15cyclictest0-21swapper/220:55:142
1628991614,1cyclictest0-21swapper/123:35:101
1628991614,1cyclictest0-21swapper/123:25:201
1628991614,1cyclictest0-21swapper/123:00:201
1628991614,1cyclictest0-21swapper/122:40:121
1628991614,1cyclictest0-21swapper/121:35:131
1628991613,2cyclictest2992-21cat21:05:141
162899160,1cyclictest8095-21apt-config19:20:011
162899160,1cyclictest0-21swapper/119:15:161
162899160,1cyclictest0-21swapper/119:10:151
162899160,15cyclictest9335-21anvil20:15:501
162899160,15cyclictest3987-21H222:10:211
162899160,15cyclictest25278-21df19:50:131
162899160,15cyclictest20169-21df00:25:131
162899160,15cyclictest17287-21latency19:35:161
162899160,15cyclictest1328-21dpkg20:05:021
162899160,15cyclictest0-21swapper/123:30:151
162899160,15cyclictest0-21swapper/121:34:331
162899160,15cyclictest0-21swapper/119:58:071
1627991615,1cyclictest9-21ksoftirqd/000:10:570
1627991614,1cyclictest0-21swapper/023:40:020
1627991614,1cyclictest0-21swapper/021:35:140
1627991614,1cyclictest0-21swapper/021:15:140
1627991614,1cyclictest0-21swapper/020:35:130
1627991614,1cyclictest0-21swapper/019:55:140
1627991614,1cyclictest0-21swapper/019:25:220
1627991614,1cyclictest0-21swapper/019:20:010
162799160,2cyclictest14550-21snapd22:55:270
162799160,1cyclictest3450-21gsd-color22:54:550
162799160,1cyclictest24018-21cpuspeed_turbos20:45:140
162799160,1cyclictest0-21swapper/019:39:010
162799160,15cyclictest7380-21sensors21:10:190
162799160,15cyclictest207132sleep022:31:160
162799160,15cyclictest15475-21cut23:20:140
162799160,15cyclictest10551-21cat20:20:130
162799160,15cyclictest0-21swapper/020:50:150
162799160,15cyclictest0-21swapper/020:25:140
162899150,1cyclictest0-21swapper/100:30:181
162799150,1cyclictest0-21swapper/020:40:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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