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2026-04-25 - 15:04
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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 Sat Apr 25, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1540299230,22cyclictest870-21systemd-logind00:08:521
15403992114,6cyclictest843-21systemd-network21:37:422
15402992113,7cyclictest870-21systemd-logind22:28:521
1540199213,15cyclictest0-21swapper/021:04:570
1540399202,1cyclictest0-21swapper/223:10:172
1540399200,19cyclictest0-21swapper/223:47:252
15402992015,4cyclictest3211-21JS22:10:211
1540199200,5cyclictest0-21swapper/020:11:560
15403991917,1cyclictest0-21swapper/200:30:192
1540399190,18cyclictest3982-21H222:10:212
1540399190,18cyclictest0-21swapper/219:30:022
1540299190,18cyclictest0-21swapper/121:49:271
1540299190,16cyclictest24590-21df00:10:131
15403991816,1cyclictest3987-21H222:10:212
15403991816,1cyclictest0-21swapper/219:21:592
15403991815,2cyclictest18795-21cpuspeed_turbos23:05:122
1540399181,2cyclictest20127-21cpuspeed_turbos22:10:122
1540399181,2cyclictest12686-21chrt22:54:272
1540399181,16cyclictest7620-21processes19:50:192
1540399180,3cyclictest0-21swapper/219:56:192
1540399180,2cyclictest16913-21nvmesmart_nvme021:05:172
1540399180,17cyclictest0-21swapper/222:35:202
1540299182,15cyclictest1100-21snmpd21:30:081
15402991815,2cyclictest3983-21H222:10:211
15402991814,3cyclictest870-21systemd-logind23:16:521
15402991814,3cyclictest444-21sshd20:35:481
1540299181,3cyclictest0-21swapper/119:10:121
1540299181,16cyclictest8918-21nfsd422:45:201
1540299180,3cyclictest14627-21wc20:05:141
1540299180,17cyclictest426-21systemd-udevd21:04:521
1540299180,17cyclictest27408-21anvil22:24:271
1540299180,17cyclictest1525-21lxd23:10:491
1540299180,16cyclictest29730-21https23:25:001
1540199182,15cyclictest13892-21pzem_current23:50:200
1540199182,0cyclictest0-21swapper/000:33:310
15401991814,3cyclictest931-21dpkg22:35:010
15401991814,3cyclictest1829-21systemd-journal19:50:380
1540199180,16cyclictest8947-21anvil23:44:420
1540199180,16cyclictest8947-21anvil23:44:410
15403991715,1cyclictest16584-21sessionclean20:09:002
15403991715,1cyclictest0-21swapper/221:50:162
15403991715,1cyclictest0-21swapper/220:45:192
15403991714,2cyclictest9212-21vmstat20:50:212
15403991714,2cyclictest3882-21/usr/sbin/munin21:40:142
15403991714,2cyclictest29097-21kernelversion20:30:172
15403991714,2cyclictest28365-21nfsd423:20:192
15403991714,2cyclictest27497-21kernelversion21:25:162
15403991714,2cyclictest27399-21sshd22:21:042
15403991714,2cyclictest16372-21/usr/sbin/munin23:55:172
15403991714,2cyclictest14266-21/usr/sbin/munin22:00:132
15403991714,2cyclictest14061-21irqstats22:55:152
15403991714,2cyclictest0-21swapper/219:40:222
1540399171,1cyclictest32654-21timerandwakeup20:35:212
1540399171,15cyclictest25221-21nfsd400:10:182
15403991710,5cyclictest0-21swapper/200:20:202
1540399170,2cyclictest5708-21ls23:35:202
1540399170,2cyclictest3987-21H222:10:212
1540399170,2cyclictest3985-21H222:10:212
1540399170,2cyclictest3983-21H222:10:212
1540399170,2cyclictest3409-21grep19:45:142
1540399170,2cyclictest32258-21chrt23:27:362
1540399170,2cyclictest29402-21grep21:30:142
1540399170,2cyclictest25574-21grep23:15:172
1540399170,2cyclictest20605-21grep00:05:002
1540399170,2cyclictest17450-21cpuspeed_turbos20:10:132
1540399170,2cyclictest13855-21missed_timers21:00:172
1540399170,16cyclictest9984-21/usr/sbin/munin20:55:152
1540399170,16cyclictest993-21dbus-daemon19:30:202
1540399170,16cyclictest6620-21expr21:45:162
1540399170,16cyclictest29335-21nfsd422:25:182
1540399170,16cyclictest22219-21cron22:15:002
1540399170,16cyclictest20952-21munin-run19:20:012
1540399170,16cyclictest14842-21latency_hist23:55:002
1540399170,16cyclictest1292-21nvmesmart_nvme000:25:182
1540399170,16cyclictest12225-21fschecks_time21:55:152
15402991714,2cyclictest5324-21taskset21:40:291
15402991714,2cyclictest4065-21fschecks_count19:45:161
15402991714,2cyclictest27373-21awk19:30:151
15402991714,2cyclictest2069-21systemd-udevd23:06:521
15402991714,2cyclictest19954-21/usr/sbin/munin20:15:141
15402991714,2cyclictest1829-21systemd-journal20:55:001
15402991713,3cyclictest0-21swapper/122:36:441
1540299171,15cyclictest993-21dbus-daemon22:55:181
1540299171,15cyclictest4099-21H222:10:211
1540299170,2cyclictest8105-21sshd19:50:381
1540299170,2cyclictest6617-21munin-run23:40:011
1540299170,2cyclictest3053-21systemd-logind22:34:521
1540299170,2cyclictest2872-21systemd-logind19:36:521
1540299170,2cyclictest16308-21sshd22:01:031
1540299170,2cyclictest16118-21df23:55:141
1540299170,2cyclictest11547-21apache_volume21:55:131
1540299170,2cyclictest10865-21nfsd423:45:191
1540299170,1cyclictest0-21swapper/120:10:521
1540299170,16cyclictest9742-21if_lxdbr019:55:151
1540299170,16cyclictest863-21avahi-daemon23:25:201
1540299170,16cyclictest7089-21cut20:50:021
1540299170,16cyclictest3985-21H222:10:211
1540299170,16cyclictest3983-21H222:10:211
1540299170,16cyclictest30876-21ntp_offset00:20:191
1540299170,16cyclictest1856-21systemd-udevd00:18:521
1540299170,16cyclictest10679-21cut22:50:131
1540299170,16cyclictest0-21swapper/120:40:201
15401991715,1cyclictest4035-21H222:10:210
15401991715,1cyclictest31353-21nfsd423:25:170
15401991715,1cyclictest0-21swapper/019:30:400
15401991714,2cyclictest8645-21munin-run21:50:010
15401991714,2cyclictest3989-21H222:10:210
15401991714,2cyclictest3985-21H222:10:210
15401991714,2cyclictest3983-21H222:10:210
15401991714,2cyclictest31323-21expr20:35:140
15401991714,2cyclictest3053-21systemd-logind22:56:510
15401991714,2cyclictest29791-21cat21:30:130
15401991714,2cyclictest2069-21systemd-udevd22:40:510
15401991714,2cyclictest20242-21systemctl23:05:200
15401991714,2cyclictest18938-21sed22:05:210
15401991714,2cyclictest16160-21fschecks_count23:55:140
15401991714,1cyclictest0-21swapper/023:30:150
15401991713,3cyclictest13081-21proc_pri20:00:190
1540199170,2cyclictest9439-21fschecks_count21:50:140
1540199170,2cyclictest7783-21expr20:50:130
1540199170,2cyclictest3987-21H222:10:210
1540199170,2cyclictest24772-21kernelversion21:20:150
1540199170,2cyclictest24492-21cat19:25:140
1540199170,2cyclictest15726-21expr21:05:130
1540199170,2cyclictest1521-21lxd19:24:480
1540199170,2cyclictest14956-21fschecks_time22:00:160
1540199170,2cyclictest14566-21cpuspeed_turbos20:05:130
1540199170,16cyclictest3989-21H222:10:210
1540199170,16cyclictest3222-21apache_processe19:45:120
1540199170,16cyclictest2603-21date00:30:010
1540199170,16cyclictest23082-21sendmail_mailqu23:10:180
1540199170,16cyclictest1778-21smartctl19:40:200
1540199170,16cyclictest1660-21cut20:40:120
1540199170,16cyclictest0-21swapper/020:20:130
15403991614,1cyclictest0-21swapper/223:00:172
15403991614,1cyclictest0-21swapper/222:45:032
1540399160,2cyclictest3983-21H222:10:212
1540399160,2cyclictest23133-21cstates20:20:132
1540399160,1cyclictest17044-21apache_volume22:05:122
1540399160,1cyclictest0-21swapper/220:25:112
1540399160,15cyclictest4099-21H222:10:212
1540399160,15cyclictest24134-21expr21:20:112
1540399160,15cyclictest21412-21ls21:15:142
1540399160,15cyclictest21096-21cpuspeed_turbos00:05:122
1540399160,15cyclictest13207-21awk20:00:212
1540399160,15cyclictest1100-21snmpd23:30:122
1540399160,15cyclictest0-21swapper/222:40:152
1540399160,15cyclictest0-21swapper/222:30:132
1540399160,14cyclictest0-21swapper/223:40:142
1540399160,14cyclictest0-21swapper/223:40:142
15402991615,0cyclictest0-21swapper/123:52:541
15402991614,1cyclictest9769-21latency21:50:171
15402991614,1cyclictest26737-21expr21:25:121
15402991614,1cyclictest0-21swapper/123:42:221
15402991614,1cyclictest0-21swapper/123:42:211
15402991614,1cyclictest0-21swapper/122:40:171
15402991614,1cyclictest0-21swapper/122:15:221
15402991614,1cyclictest0-21swapper/120:22:391
15402991614,1cyclictest0-21swapper/100:25:131
15402991614,1cyclictest0-21swapper/100:00:011
15402991613,2cyclictest5879-21cpuspeed_turbos00:35:131
15402991613,2cyclictest399-20systemd-journal19:40:011
15402991613,2cyclictest18261-21expr22:05:181
15402991613,2cyclictest17363-21sed21:05:211
15402991610,1cyclictest111rcu_preempt22:10:111
1540299160,1cyclictest0-21swapper/121:20:101
1540299160,1cyclictest0-21swapper/121:10:501
1540299160,15cyclictest2870-21cpuspeed_turbos00:30:121
1540299160,15cyclictest28427-21cstates20:30:141
1540299160,15cyclictest26855-21ntpq20:25:201
1540299160,15cyclictest16682-21idleruntime23:00:161
1540299160,15cyclictest1517-21lxd20:04:471
1540299160,15cyclictest1053-21cat23:30:131
15401991614,1cyclictest5049-21expr20:45:160
15401991614,1cyclictest0-21swapper/023:35:140
15401991614,1cyclictest0-21swapper/022:45:210
15401991614,1cyclictest0-21swapper/022:35:120
15401991614,1cyclictest0-21swapper/022:10:110
15401991614,1cyclictest0-21swapper/021:55:150
15401991614,1cyclictest0-21swapper/021:10:130
15401991614,1cyclictest0-21swapper/019:35:020
15401991614,1cyclictest0-21swapper/000:00:190
15401991613,2cyclictest29389-21nfsd420:30:190
1540199160,2cyclictest10392-21http_loadtime23:45:160
1540199160,15cyclictest3987-21H222:10:210
1540199160,15cyclictest30857-21ntp_kernel_pll_00:20:190
1540199160,15cyclictest22653-21apache_processe22:15:120
1540199160,15cyclictest22366-21awk21:15:170
1540199160,15cyclictest11060-21chrt19:58:380
1540199160,15cyclictest0-21swapper/023:20:190
1540199160,15cyclictest0-21swapper/023:00:160
1540199160,15cyclictest0-21swapper/021:40:020
1540199160,15cyclictest0-21swapper/021:25:160
1540199160,15cyclictest0-21swapper/019:15:110
1540199160,15cyclictest0-21swapper/019:10:120
1540199160,15cyclictest0-21swapper/000:35:160
1540199160,15cyclictest0-21swapper/000:15:140
15401991512,2cyclictest29525-21ntp_states22:25:180
15401991512,2cyclictest21004-21apache_volume00:05:120
1540199150,14cyclictest0-21swapper/022:20:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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