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2026-05-03 - 15:59
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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 May 03, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1531999293,15cyclictest0-21swapper/108:34:301
15319992827,0cyclictest0-21swapper/108:50:211
15320992218,2cyclictest20963-21sshd12:00:282
15319992213,0cyclictest0-21swapper/107:33:371
1531999220,18cyclictest0-21swapper/108:08:591
1532099212,13cyclictest8636-21mandb08:47:012
1531899203,16cyclictest25754-21cut09:20:010
1532099192,2cyclictest28823-21cut09:25:152
15320991915,3cyclictest25188-21nfsd408:20:182
1532099190,3cyclictest0-21swapper/211:25:382
1532099190,18cyclictest0-21swapper/208:14:202
1532099190,17cyclictest2350-21nvmesmart_nvme012:25:192
1531999190,1cyclictest0-21swapper/109:10:201
1531999190,18cyclictest843-21systemd-network08:14:211
1531899193,15cyclictest0-21swapper/011:34:090
1531899192,16cyclictest14744-21nfsd411:50:180
1531899190,1cyclictest0-21swapper/009:45:010
1531899190,18cyclictest0-21swapper/010:55:010
15320991816,1cyclictest0-21swapper/212:15:182
1532099181,2cyclictest22123-21chrt10:10:132
1532099180,3cyclictest0-21swapper/208:05:202
15319991816,1cyclictest0-21swapper/110:40:181
15319991815,2cyclictest10819-21grep07:55:181
15319991814,3cyclictest2007-21systemd-journal11:30:211
15319991814,2cyclictest1300-21lxd11:54:421
1531999180,2cyclictest3720-21cat12:30:001
1531899182,15cyclictest0-21swapper/010:35:180
15318991816,1cyclictest21167-21idleruntime09:10:150
15318991814,3cyclictest0-21swapper/008:15:140
15318991814,2cyclictest20437-21latency_hist11:05:010
15318991813,4cyclictest0-21swapper/009:37:560
1531899180,3cyclictest6308-21idleruntime-cro12:35:000
15320991715,1cyclictest0-21swapper/210:50:212
15320991714,2cyclictest9550-21expr10:45:132
15320991714,2cyclictest7001-21expr07:50:132
15320991714,2cyclictest5196-21nfsd412:30:172
15320991714,2cyclictest399-20systemd-journal11:38:552
15320991714,2cyclictest32476-21apache_accesses10:30:102
15320991714,2cyclictest32058-21which09:30:152
15320991714,2cyclictest27210-21chrt12:13:222
15320991714,2cyclictest24552-21smartctl09:15:182
15320991714,2cyclictest20391-21sort07:15:222
15320991714,2cyclictest14501-21snapd11:22:582
15320991714,2cyclictest1345-21tune2fs07:40:152
15320991714,2cyclictest13078-21awk08:00:152
1532099171,1cyclictest86542chrt10:42:412
1532099171,15cyclictest0-21swapper/211:50:152
1532099171,15cyclictest0-21swapper/209:05:152
1532099170,2cyclictest843-21systemd-network10:36:242
1532099170,2cyclictest4767-21sort08:40:172
1532099170,2cyclictest4536-21if_eno107:45:152
1532099170,2cyclictest30501-21idleruntime10:25:162
1532099170,2cyclictest28302-21nfsd410:20:172
1532099170,2cyclictest19876-21nfsd410:05:192
1532099170,2cyclictest16885-21taskset09:02:122
1532099170,2cyclictest15029-21gpgv10:55:012
1532099170,2cyclictest10253-21latency08:50:172
1532099170,16cyclictest28305-21awk08:25:202
1532099170,16cyclictest27020-21cat07:30:002
1532099170,16cyclictest21950-21nfsd411:05:182
1532099170,16cyclictest18114-21chrt07:12:172
1532099170,16cyclictest0-21swapper/211:30:132
1532099170,16cyclictest0-21swapper/207:55:162
15319991715,1cyclictest15119-21acpi10:55:111
15319991714,2cyclictest9176-21munin-run12:40:001
15319991714,2cyclictest399-20systemd-journal11:05:021
15319991714,2cyclictest26479-21df09:20:131
15319991714,2cyclictest25070-21users09:15:221
15319991714,2cyclictest23194-21unattended-upgr08:16:531
15319991714,2cyclictest20740-21timerandwakeup12:00:211
15319991714,2cyclictest18013-21chrt07:10:561
15319991714,2cyclictest17941-21runrttasks10:01:081
15319991714,2cyclictest17803-21expr09:05:151
15319991714,2cyclictest1035-21thermald10:05:221
15319991713,3cyclictest9619-21pzem_voltage11:40:211
15319991713,3cyclictest399-20systemd-journal10:20:001
1531999171,1cyclictest0-21swapper/107:45:011
1531999171,15cyclictest5304-21mailstats07:45:211
1531999171,15cyclictest0-21swapper/109:30:181
1531999170,2cyclictest8773-21memory09:45:171
1531999170,2cyclictest870-21systemd-logind11:46:521
1531999170,2cyclictest29320-21expr11:20:121
1531999170,2cyclictest2706-21munin-run10:35:001
1531999170,2cyclictest24394-21munin-run12:10:001
1531999170,2cyclictest2007-21systemd-journal07:54:351
1531999170,2cyclictest1523-21lxd12:16:421
1531999170,2cyclictest1521-21lxd07:28:421
1531999170,2cyclictest14504-21snapd11:00:281
1531999170,2cyclictest14496-21snapd09:28:091
1531999170,16cyclictest863-21avahi-daemon08:55:211
1531999170,16cyclictest426-21systemd-udevd12:32:501
1531999170,16cyclictest27015-21/usr/sbin/munin10:20:151
1531999170,16cyclictest26425-21ntp_offset12:10:171
1531999170,16cyclictest23823-21apt-get07:25:011
1531999170,16cyclictest12140-21grep10:50:131
1531899179,4cyclictest0-21swapper/008:07:130
15318991715,1cyclictest308242sleep009:28:460
15318991715,1cyclictest0-21swapper/010:25:150
15318991714,2cyclictest870-21systemd-logind09:58:520
15318991714,2cyclictest7679-21if_enp1s007:50:160
15318991714,2cyclictest6835-21expr12:35:130
15318991714,2cyclictest28475-21sort07:30:190
15318991714,2cyclictest22941-21cron11:09:000
15318991714,2cyclictest19876-21nfsd410:05:190
15318991714,2cyclictest19510-21pzem_voltage08:10:190
15318991714,2cyclictest15904-21sshd10:00:030
15318991714,2cyclictest1348-21lxd12:20:420
15318991714,2cyclictest12988-21latency_hist09:55:010
15318991714,2cyclictest1032-21seq09:31:590
1531899171,15cyclictest0-21swapper/010:16:140
1531899170,2cyclictest9247-21grep11:40:180
1531899170,2cyclictest3414-21master08:47:010
1531899170,2cyclictest30345-21munin-run12:20:010
1531899170,2cyclictest27455-21/usr/sbin/munin09:20:200
1531899170,16cyclictest5601-21lxd07:22:420
1531899170,16cyclictest5178-21dpkg11:35:120
1531899170,16cyclictest27947-21/usr/sbin/munin08:25:190
1531899170,16cyclictest25207-21grep08:20:180
1531899170,16cyclictest25011-21/usr/sbin/munin12:10:150
1531899170,16cyclictest24296-21python312:10:000
1531899170,16cyclictest14565-21munin-run10:55:010
15320991615,1cyclictest27344-21/usr/sbin/munin07:30:152
15320991614,1cyclictest6708-21/usr/sbin/munin12:35:132
15320991614,1cyclictest17517-21cut10:00:212
15320991614,1cyclictest0-21swapper/211:45:152
15320991614,1cyclictest0-21swapper/211:10:172
15320991614,1cyclictest0-21swapper/210:15:162
15320991614,1cyclictest0-21swapper/209:50:122
15320991614,1cyclictest0-21swapper/209:20:152
15320991614,1cyclictest0-21swapper/208:35:142
15320991614,1cyclictest0-21swapper/207:35:162
15320991613,2cyclictest4322-21sed09:38:592
15320991613,2cyclictest30043-21cnf-update-db08:30:012
1532099160,1cyclictest0-21swapper/209:10:202
1532099160,15cyclictest8728-21sed09:45:172
1532099160,15cyclictest4979-21/usr/sbin/munin09:40:112
1532099160,15cyclictest30576-21cpuspeed_turbos12:20:122
1532099160,15cyclictest22735-21switchtime08:15:222
1532099160,15cyclictest21749-21runrttasks12:05:122
1532099160,15cyclictest21624-21expr07:20:132
1532099160,15cyclictest16387-21expr11:55:152
1532099160,15cyclictest14711-21pzem_energy09:55:202
1532099160,15cyclictest12097-21cpuspeed_turbos08:55:132
1532099160,15cyclictest10401-21idleruntime-cro11:45:002
1532099160,15cyclictest0-21swapper/211:15:142
1532099160,15cyclictest0-21swapper/211:05:012
15319991614,1cyclictest455-21plymouthd09:40:141
15319991614,1cyclictest4520-21hddtemp_smartct08:40:161
15319991614,1cyclictest31755-21awk11:25:121
15319991614,1cyclictest0-21swapper/111:35:161
15319991614,1cyclictest0-21swapper/111:15:211
15319991614,1cyclictest0-21swapper/110:45:131
15319991614,1cyclictest0-21swapper/108:35:141
15319991614,1cyclictest0-21swapper/108:25:161
15319991614,1cyclictest0-21swapper/108:20:141
15319991613,2cyclictest31490-21latency12:20:161
15319991613,2cyclictest30516-21expr07:35:131
1531999160,1cyclictest3235-21dpkg10:35:011
1531999160,1cyclictest17298-21latency11:55:171
1531999160,1cyclictest153642chrt09:58:261
1531999160,15cyclictest3414-21master08:00:061
1531999160,15cyclictest2356-21df09:35:151
1531999160,15cyclictest1-21systemd11:10:591
1531999160,15cyclictest11538-21missed_timers09:50:171
1531999160,15cyclictest0-21swapper/110:25:151
1531999160,15cyclictest0-21swapper/107:15:171
15318991614,1cyclictest8203-21expr09:45:140
15318991614,1cyclictest22849-21grep10:10:170
15318991614,1cyclictest0-21swapper/012:25:130
15318991614,1cyclictest0-21swapper/011:25:200
15318991614,1cyclictest0-21swapper/009:00:130
15318991614,1cyclictest0-21swapper/008:40:140
15318991614,1cyclictest0-21swapper/008:35:160
15318991614,1cyclictest0-21swapper/007:55:110
15318991613,2cyclictest6541-21apache_volume10:40:130
15318991613,2cyclictest18330-21chrt11:56:550
15318991613,2cyclictest11920-21cat08:55:000
1531899161,15cyclictest9-21ksoftirqd/012:00:460
1531899160,2cyclictest9357-21cpuspeed_turbos10:45:130
1531899160,1cyclictest455-21plymouthd11:15:160
1531899160,1cyclictest0-21swapper/011:45:140
1531899160,1cyclictest0-21swapper/010:20:130
1531899160,1cyclictest0-21swapper/007:25:020
1531899160,15cyclictest5091-21awk07:45:180
1531899160,15cyclictest324492sleep010:30:050
1531899160,15cyclictest31820-21sed08:30:210
1531899160,15cyclictest16008-21/usr/sbin/munin07:10:140
1531899160,15cyclictest0-21swapper/011:10:130
1531899160,15cyclictest0-21swapper/009:10:010
1531899160,15cyclictest0-21swapper/008:55:120
1531899160,15cyclictest0-21swapper/008:00:180
1531899160,15cyclictest0-21swapper/007:44:110
1531899160,15cyclictest0-21swapper/007:35:100
1531999150,15cyclictest0-21swapper/108:45:141
1531999150,14cyclictest0-21swapper/109:00:211
15318991513,1cyclictest0-21swapper/007:15:190
1531899150,14cyclictest0-21swapper/011:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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