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2026-03-28 - 20:29
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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 Mar 28, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
669499270,26cyclictest0-21swapper/211:05:142
669499222,19cyclictest4396-21fschecks_count08:00:162
6694992214,4cyclictest0-21swapper/211:17:042
6689992113,5cyclictest0-21swapper/111:57:311
6685992114,3cyclictest0-21swapper/007:17:310
6694992014,3cyclictest0-21swapper/208:07:392
6694992014,3cyclictest0-21swapper/208:07:382
669499190,1cyclictest0-21swapper/212:04:042
669499190,17cyclictest1523-21lxd10:20:432
6689991915,3cyclictest0-21swapper/110:38:351
668999190,2cyclictest3987-21H222:10:211
668599194,1cyclictest0-21swapper/010:16:470
668599192,16cyclictest21724-21smtpd09:27:220
668599192,16cyclictest21724-21smtpd09:27:220
6685991917,1cyclictest26842-21date12:30:000
668599191,16cyclictest7802-21nfsd408:05:190
668599191,16cyclictest7802-21nfsd408:05:190
6694991815,2cyclictest19897-21expr09:25:112
6694991815,2cyclictest19897-21expr09:25:112
6694991814,3cyclictest0-21swapper/211:30:012
669499181,16cyclictest27420-21cut10:35:172
669499180,2cyclictest4099-21H222:10:212
669499180,17cyclictest3976-21H222:10:212
669499180,17cyclictest0-21swapper/209:30:132
668999182,2cyclictest18208-21chrt12:13:211
6689991815,2cyclictest9534-21smartctl09:05:191
6689991815,2cyclictest25010-21sed10:30:211
668999181,2cyclictest5883-21munin-run10:55:011
668999180,3cyclictest18938-21nfsd408:25:151
668999180,17cyclictest18899-21python309:25:011
668999180,16cyclictest0-21swapper/109:51:091
668999180,15cyclictest0-21swapper/112:31:351
668599182,15cyclictest3987-21H222:10:210
6685991816,1cyclictest32024-21timerandwakeup07:50:230
6694991715,1cyclictest0-21swapper/210:25:142
6694991714,2cyclictest9584-21sed11:55:212
6694991714,2cyclictest8393-21ntp_states07:10:192
6694991714,2cyclictest5319-21cat11:50:132
6694991714,2cyclictest30210-21postgres09:44:112
6694991714,2cyclictest26639-21postgres07:43:392
6694991714,2cyclictest21950-21expr12:20:142
6694991714,2cyclictest20807-21cat11:20:132
6694991714,2cyclictest20801-21expr08:30:152
6694991714,2cyclictest20801-21expr08:30:142
6694991714,2cyclictest20492-21switchtime07:30:232
6694991714,2cyclictest14418-21wc10:10:202
6694991714,2cyclictest13802-21nfsd407:20:192
6694991714,2cyclictest12026-21latency_hist08:15:012
6694991714,2cyclictest1035-21thermald07:15:202
669499171,15cyclictest3450-21gsd-color12:15:212
669499170,2cyclictest8868-21apache_accesses11:00:122
669499170,2cyclictest6391-21seq10:55:142
669499170,2cyclictest440-21fschecks_count10:45:152
669499170,2cyclictest2509-21timerandwakeup07:55:242
669499170,2cyclictest21771-21tr07:35:122
669499170,2cyclictest15945-21lxd09:54:432
669499170,2cyclictest12779-21fschecks_time08:15:152
669499170,2cyclictest0-21swapper/208:35:132
669499170,1cyclictest0-21swapper/207:45:052
669499170,16cyclictest31694-21ntp_states07:50:192
669499170,16cyclictest29171-21apache_processe08:45:122
669499170,16cyclictest26524-21chrt12:29:562
669499170,16cyclictest1934-21basename08:55:002
669499170,16cyclictest16755-21snapd11:33:182
669499170,16cyclictest16226-21cpuspeed_turbos12:10:122
669499170,16cyclictest15941-21missed_timers08:20:172
669499170,16cyclictest15687-21apt-config07:25:022
669499170,16cyclictest0-21swapper/211:40:132
668999172,1cyclictest12314-21cpuspeed_turbos08:15:141
6689991714,2cyclictest433-21fschecks_count10:45:151
6689991714,2cyclictest4058-21nvmesmart_nvme008:55:191
6689991714,2cyclictest32047-21tr08:50:141
6689991714,2cyclictest29765-21grep11:35:181
6689991714,2cyclictest29765-21grep11:35:171
6689991714,2cyclictest22916-21apt-key08:35:011
6689991714,2cyclictest22916-21apt-key08:35:011
6689991714,2cyclictest18243-21fschecks_count11:15:151
6689991714,2cyclictest15625-21http_loadtime11:10:161
6689991714,2cyclictest1515-21lxd11:52:421
6689991714,2cyclictest14345-21nfsd412:05:171
6689991714,2cyclictest14332-21awk09:15:151
6689991714,2cyclictest1085-21gdbus07:15:211
668999171,15cyclictest19585-21gpg-connect-age09:25:011
668999171,15cyclictest19585-21gpg-connect-age09:25:011
668999170,2cyclictest3991-21H222:10:211
668999170,2cyclictest3693-21/usr/sbin/munin08:00:161
668999170,2cyclictest3351-21lxd10:20:421
668999170,2cyclictest30937-21tr09:45:141
668999170,2cyclictest15900-21fschecks_count10:15:131
668999170,2cyclictest12392-21expr11:05:141
668999170,2cyclictest10614-21nfsd408:10:211
668999170,2cyclictest0-21swapper/109:00:181
668999170,1cyclictest0-21swapper/108:35:131
668999170,16cyclictest880-21rs:main1
668999170,16cyclictest7031-21ls08:05:151
668999170,16cyclictest7031-21ls08:05:141
668999170,16cyclictest6400-21expr10:55:131
668999170,16cyclictest567-21pzem_power11:40:201
668999170,16cyclictest399-20systemd-journal09:15:001
668999170,16cyclictest31812-21latency_hist08:50:011
668999170,16cyclictest3030-21gmain12:23:171
668999170,16cyclictest29849-21expr10:40:141
668999170,16cyclictest28459-21nfsd407:45:161
668999170,16cyclictest27692-21grep08:40:191
668999170,16cyclictest25803-21mailstats12:25:191
668999170,16cyclictest21310-21kernelversion11:20:171
668999170,16cyclictest13190-21taskset07:20:151
668999170,16cyclictest12696-21cat12:04:551
668999170,16cyclictest11787-21smtpd10:07:571
668999170,16cyclictest0-21swapper/107:52:401
668599172,1cyclictest9-21ksoftirqd/007:24:090
6685991715,1cyclictest0-21swapper/011:37:360
6685991715,1cyclictest0-21swapper/011:37:360
6685991714,2cyclictest5491-21nfsd409:55:160
6685991714,2cyclictest4982-21sendmail_mailtr10:50:210
6685991714,2cyclictest4035-21H222:10:210
6685991714,2cyclictest3989-21H222:10:210
6685991714,2cyclictest29436-21cut12:35:000
6685991714,2cyclictest28903-21munin-run10:40:010
6685991714,2cyclictest23812-21proc_pri09:30:190
6685991714,2cyclictest19198-21needreboot10:20:190
6685991714,2cyclictest18848-21nfsd411:15:190
6685991714,2cyclictest1856-21systemd-udevd11:26:520
6685991714,2cyclictest1523-21lxd08:04:420
6685991714,2cyclictest0-21swapper/010:45:000
6685991714,2cyclictest0-21swapper/008:58:260
6685991714,2cyclictest0-21swapper/008:20:220
6685991714,1cyclictest0-21swapper/011:50:170
6685991713,3cyclictest4433-21sshd11:49:080
668599170,2cyclictest8392-21sed11:55:140
668599170,2cyclictest3983-21H222:10:210
668599170,2cyclictest17599-21chrt08:25:030
668599170,2cyclictest16749-21snapd11:43:140
668599170,1cyclictest0-21swapper/010:57:200
668599170,16cyclictest9801-21expr10:05:120
668599170,16cyclictest31457-21cat08:49:560
668599170,16cyclictest26296-21cut08:40:010
668599170,16cyclictest22729-21apt-get08:35:010
668599170,16cyclictest22729-21apt-get08:35:000
668599170,16cyclictest1173-21expr07:55:150
6694991614,1cyclictest0-21swapper/211:10:142
6694991614,1cyclictest0-21swapper/210:00:142
6694991614,1cyclictest0-21swapper/209:57:352
6694991614,1cyclictest0-21swapper/209:15:152
6694991614,1cyclictest0-21swapper/209:05:212
6694991614,1cyclictest0-21swapper/209:00:192
6694991613,2cyclictest4057-21nvmesmart_nvme008:55:202
6694991613,2cyclictest23464-21/usr/sbin/munin10:30:112
6694991613,2cyclictest15251-21/usr/sbin/munin10:15:102
669499160,2cyclictest12471-21wc09:10:202
669499160,1cyclictest0-21swapper/210:40:182
669499160,15cyclictest28700-21cpuspeed_turbos11:35:132
669499160,15cyclictest28700-21cpuspeed_turbos11:35:122
669499160,15cyclictest18027-21sed09:20:192
669499160,15cyclictest0-21swapper/212:35:142
669499160,15cyclictest0-21swapper/212:05:152
669499160,15cyclictest0-21swapper/211:45:472
669499160,15cyclictest0-21swapper/210:08:592
669499160,15cyclictest0-21swapper/209:45:142
669499160,15cyclictest0-21swapper/209:35:112
669499160,15cyclictest0-21swapper/208:25:142
6689991614,1cyclictest0-21swapper/111:00:161
6689991614,1cyclictest0-21swapper/110:10:141
6689991614,1cyclictest0-21swapper/110:00:131
6689991614,1cyclictest0-21swapper/107:30:161
6689991614,1cyclictest0-21swapper/107:25:191
6689991613,2cyclictest24670-21cpuspeed_turbos07:40:121
668999160,15cyclictest7695-21perl07:10:151
668999160,15cyclictest29840-21grep12:35:141
668999160,15cyclictest2440-21switchtime07:55:221
668999160,15cyclictest1872-21find11:45:121
668999160,15cyclictest0-21swapper/112:15:151
668999160,15cyclictest0-21swapper/111:30:171
668999160,15cyclictest0-21swapper/111:25:131
668999160,15cyclictest0-21swapper/109:55:131
668999160,15cyclictest0-21swapper/109:40:131
668999160,15cyclictest0-21swapper/108:20:141
668999160,15cyclictest0-21swapper/107:35:211
6685991614,1cyclictest7004-21grep10:00:140
6685991614,1cyclictest258022sleep011:30:020
6685991614,1cyclictest25086-21apt-get09:35:110
6685991614,1cyclictest0-21swapper/012:20:230
6685991614,1cyclictest0-21swapper/012:05:140
6685991614,1cyclictest0-21swapper/011:10:130
6685991614,1cyclictest0-21swapper/011:05:180
6685991614,1cyclictest0-21swapper/010:25:130
6685991614,1cyclictest0-21swapper/009:22:400
6685991614,1cyclictest0-21swapper/009:15:190
6685991614,1cyclictest0-21swapper/008:50:150
6685991614,1cyclictest0-21swapper/007:40:170
6685991614,1cyclictest0-21swapper/007:35:120
6685991613,2cyclictest19303-21expr07:30:160
6685991613,2cyclictest11552-21expr09:10:140
668599161,1cyclictest0-21swapper/012:13:390
668599160,2cyclictest28058-21/usr/sbin/munin07:45:130
668599160,1cyclictest22685-21cron11:25:010
668599160,1cyclictest0-21swapper/008:10:170
668599160,15cyclictest8898-21cpu11:00:130
668599160,15cyclictest32409-21cut10:45:130
668599160,15cyclictest31462-21sed12:35:220
668599160,15cyclictest28694-21which09:40:160
668599160,15cyclictest0-21swapper/012:15:190
668599160,15cyclictest0-21swapper/012:00:130
668599160,15cyclictest0-21swapper/009:45:210
668599160,15cyclictest0-21swapper/009:05:220
668599160,15cyclictest0-21swapper/008:15:150
668599160,15cyclictest0-21swapper/007:25:100
6685991512,2cyclictest27489-21/usr/sbin/munin08:40:170
668599150,14cyclictest0-21swapper/009:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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