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2026-03-27 - 19:47
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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 Mar 27, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7395992814,14cyclictest0-21swapper/009:19:200
740099270,12cyclictest0-21swapper/111:31:301
740099262,23cyclictest863-21avahi-daemon09:35:201
7400992614,9cyclictest18725-21chrt09:20:591
740099243,6cyclictest0-21swapper/109:40:211
7400992414,6cyclictest21031-21smtp07:31:331
740099240,2cyclictest18849-21expr11:15:121
740099232,20cyclictest89452chrt10:57:581
7400992316,6cyclictest0-21swapper/109:47:141
740099230,2cyclictest6007-21expr11:50:131
740099230,2cyclictest25163-21expr07:40:141
740099230,2cyclictest24267-21cat11:25:131
740099230,2cyclictest14752-21munin-run11:10:001
740099230,2cyclictest14225-21ls09:15:141
740099230,1cyclictest255002sleep108:38:071
740099230,1cyclictest0-21swapper/112:30:221
740099230,1cyclictest0-21swapper/107:55:191
7404992212,5cyclictest0-21swapper/210:45:122
740099220,3cyclictest5839-21fschecks_count09:00:141
740099220,2cyclictest9533-21/usr/sbin/munin11:00:171
740099220,2cyclictest26891-21grep08:40:141
740099220,2cyclictest24702-21cat10:30:011
740099220,2cyclictest16379-21cut11:10:171
740099220,2cyclictest16379-21cut11:10:171
740099220,2cyclictest15187-21expr08:20:121
740099220,21cyclictest2127-21/usr/sbin/munin08:55:201
740099220,21cyclictest0-21swapper/110:35:211
740099220,1cyclictest271462chrt10:34:041
740099220,1cyclictest248012sleep109:34:051
740099220,1cyclictest19732-21expr09:25:131
740099220,1cyclictest19732-21expr09:25:131
740099220,1cyclictest105342chrt11:57:251
740099220,1cyclictest0-21swapper/112:10:121
740099220,1cyclictest0-21swapper/112:00:161
740099220,1cyclictest0-21swapper/109:50:211
740099220,1cyclictest0-21swapper/108:05:181
740099220,1cyclictest0-21swapper/108:00:191
740099220,1cyclictest0-21swapper/107:50:221
740099220,1cyclictest0-21swapper/107:20:131
740099220,17cyclictest21925-21sed10:25:011
740099220,16cyclictest399-20systemd-journal08:15:011
740099220,16cyclictest29261-21cstates08:45:131
740099220,16cyclictest28512-21sed07:45:161
740099220,16cyclictest11787-21grep07:15:181
740099220,15cyclictest23110-21ntpq07:35:181
740099210,2cyclictest8779-21cat09:05:141
740099210,2cyclictest8014-21expr07:10:141
740099210,2cyclictest21386-21tr11:20:131
740099210,2cyclictest17273-21expr10:15:151
740099210,2cyclictest11209-21/usr/sbin/munin09:10:151
740099210,20cyclictest22976-21fschecks_time12:20:141
740099210,20cyclictest0-21swapper/112:27:481
740099210,20cyclictest0-21swapper/111:39:001
740099210,20cyclictest0-21swapper/110:10:141
740099210,20cyclictest0-21swapper/110:04:551
740099210,20cyclictest0-21swapper/108:25:171
740099210,1cyclictest225892chrt08:30:301
740099210,1cyclictest0-21swapper/112:35:011
740099210,1cyclictest0-21swapper/111:45:171
740099210,1cyclictest0-21swapper/111:40:131
740099210,1cyclictest0-21swapper/110:45:171
7400992014,5cyclictest0-21swapper/109:55:121
740099200,1cyclictest12177-21cstates08:15:131
740099200,1cyclictest0-21swapper/112:15:131
740099200,19cyclictest0-21swapper/112:06:481
740099200,19cyclictest0-21swapper/110:40:121
7400991914,4cyclictest0-21swapper/110:05:141
740099190,18cyclictest0-21swapper/108:50:131
739599192,16cyclictest19018-21seq12:13:500
7395991919,0cyclictest0-21swapper/012:09:530
739599190,18cyclictest0-21swapper/009:54:100
7404991816,1cyclictest0-21swapper/210:05:012
7404991815,2cyclictest29357-21http_loadtime09:40:162
7404991815,2cyclictest16296-21fschecks_count11:10:162
7404991815,2cyclictest16296-21fschecks_count11:10:162
7404991814,3cyclictest0-21swapper/210:22:072
740499181,16cyclictest863-21avahi-daemon12:10:202
740099180,14cyclictest0-21swapper/107:27:251
739599182,15cyclictest0-21swapper/010:15:220
7395991814,3cyclictest0-21swapper/012:22:110
7395991814,3cyclictest0-21swapper/008:23:360
739599181,16cyclictest0-21swapper/010:04:590
739599180,3cyclictest3053-21systemd-logind10:06:520
739599180,17cyclictest870-21systemd-logind12:26:510
739599180,17cyclictest426-21systemd-udevd11:48:510
739599180,17cyclictest28436-21fschecks_time12:30:150
740499178,6cyclictest22921-21cut12:20:142
7404991715,1cyclictest31954-21cut11:40:002
7404991715,1cyclictest0-21swapper/207:30:142
7404991715,1cyclictest0-21swapper/207:25:212
7404991714,2cyclictest791-21sort12:39:002
7404991714,2cyclictest492-21fschecks_time11:40:142
7404991714,2cyclictest3983-21H222:10:212
7404991714,2cyclictest29652-21fschecks_time08:45:142
7404991714,2cyclictest28654-21kernelversion12:30:182
7404991714,2cyclictest26929-21cron07:45:002
7404991714,2cyclictest22304-21df07:35:132
7404991714,2cyclictest20841-21cut11:20:012
7404991714,2cyclictest2069-21systemd-udevd08:06:522
7404991714,2cyclictest2007-21systemd-journal12:00:072
7404991714,2cyclictest17937-21nfsd409:20:162
7404991714,2cyclictest16095-21chrt09:17:482
7404991714,2cyclictest15565-21sed12:05:212
7404991713,3cyclictest29944-21sort10:39:002
7404991713,3cyclictest0-21swapper/207:53:032
740499170,2cyclictest8219-21nvmesmart_nvme010:55:192
740499170,2cyclictest7765-21latency_hist10:00:012
740499170,2cyclictest2069-21systemd-udevd09:06:522
740499170,2cyclictest2055-21cat09:50:122
740499170,2cyclictest14127-21timerwakeupswit11:05:212
740499170,16cyclictest9852-21nvmesmart_nvme011:55:202
740499170,16cyclictest3416-21qmgr12:27:472
740499170,16cyclictest32211-21switchtime10:40:192
740499170,16cyclictest3053-21systemd-logind08:22:522
740499170,16cyclictest28564-21nfsd407:45:172
740499170,16cyclictest28004-21lxd09:34:412
740499170,16cyclictest24496-21sshd10:29:552
740499170,16cyclictest20669-21nfsd409:25:172
740499170,16cyclictest20669-21nfsd409:25:172
740499170,16cyclictest11908-21/usr/sbin/munin08:15:112
740499170,16cyclictest11072-21ls10:05:142
740499170,16cyclictest0-21swapper/209:00:212
740499170,16cyclictest0-21swapper/208:32:032
740499170,16cyclictest0-21swapper/208:10:222
7395991715,1cyclictest0-21swapper/012:19:550
7395991714,2cyclictest8851-21expr11:55:140
7395991714,2cyclictest30988-21/usr/sbin/munin07:50:160
7395991714,2cyclictest2872-21systemd-logind11:28:520
7395991714,2cyclictest28013-21nvmesmart_nvme011:30:170
7395991714,2cyclictest24567-21nfsd408:35:170
7395991714,2cyclictest17469-21cpu08:25:120
7395991714,2cyclictest15664-21seq11:10:150
7395991714,2cyclictest15664-21seq11:10:150
7395991714,2cyclictest1348-21lxd11:36:410
739599171,1cyclictest0-21swapper/010:20:140
739599171,15cyclictest19650-21expr09:25:130
739599171,15cyclictest19650-21expr09:25:130
739599171,15cyclictest13845-21systemctl11:05:200
739599170,2cyclictest9244-21munin-plugin-st11:00:010
739599170,2cyclictest6518-21grep09:00:180
739599170,2cyclictest504-21chrt12:36:560
739599170,2cyclictest5027-21gpg-connect-age09:55:010
739599170,2cyclictest3709-21qmgr08:41:320
739599170,2cyclictest23843-21smtp07:37:470
739599170,2cyclictest22855-21expr09:30:140
739599170,2cyclictest12083-21cut08:15:130
739599170,16cyclictest7131-21if_enp1s008:05:160
739599170,16cyclictest7001-21nfsd411:50:170
739599170,16cyclictest362-21apache_volume07:55:120
739599170,16cyclictest3053-21systemd-logind10:10:520
739599170,16cyclictest29836-21nfsd409:40:180
739599170,16cyclictest20402-21apt-config08:30:010
739599170,16cyclictest16755-21snapd11:22:490
739599170,16cyclictest1466-21sendmail_mailqu11:40:200
739599170,16cyclictest12826-21ls12:00:220
7404991614,1cyclictest997-21df07:55:142
7404991614,1cyclictest26410-21expr08:40:132
7404991614,1cyclictest25405-21cpuspeed_turbos09:35:132
7404991614,1cyclictest23705-21expr08:35:132
7404991614,1cyclictest133732sleep209:13:082
7404991614,1cyclictest0-21swapper/211:45:152
7404991614,1cyclictest0-21swapper/211:20:182
740499160,1cyclictest32702-21latency08:50:162
740499160,1cyclictest0-21swapper/207:10:212
740499160,15cyclictest32411-21missed_timers09:45:182
740499160,15cyclictest24607-21http_loadtime11:25:152
740499160,15cyclictest151582chrt07:21:112
740499160,15cyclictest13996-21apt-get10:10:132
740499160,15cyclictest0-21swapper/212:15:142
740499160,15cyclictest0-21swapper/211:54:562
740499160,15cyclictest0-21swapper/211:30:132
740499160,15cyclictest0-21swapper/211:00:122
740499160,15cyclictest0-21swapper/210:50:142
740499160,15cyclictest0-21swapper/208:55:152
740499160,15cyclictest0-21swapper/207:15:132
7395991614,1cyclictest0-21swapper/010:40:120
7395991614,1cyclictest0-21swapper/010:35:210
7395991614,1cyclictest0-21swapper/010:26:080
7395991614,1cyclictest0-21swapper/009:45:180
7395991614,1cyclictest0-21swapper/009:20:160
7395991614,1cyclictest0-21swapper/009:05:010
7395991614,1cyclictest0-21swapper/008:55:170
7395991614,1cyclictest0-21swapper/008:10:280
7395991614,1cyclictest0-21swapper/007:45:170
7395991614,1cyclictest0-21swapper/007:30:140
7395991614,1cyclictest0-21swapper/007:25:140
7395991614,1cyclictest0-21swapper/007:19:360
7395991614,1cyclictest0-21swapper/007:10:080
739599160,2cyclictest18978-21df_inode11:15:140
739599160,15cyclictest9640-21grep11:00:120
739599160,15cyclictest28967-21/usr/sbin/munin08:45:120
739599160,15cyclictest26782-21seq07:43:110
739599160,15cyclictest26518-21nfsd409:35:170
739599160,15cyclictest25852-21/usr/sbin/munin10:30:170
739599160,15cyclictest12956-21grep09:10:200
739599160,15cyclictest0-21swapper/010:50:140
739599160,15cyclictest0-21swapper/010:45:130
739599160,15cyclictest0-21swapper/008:50:160
739599160,15cyclictest0-21swapper/008:00:200
7404991510,4cyclictest4289-21fschecks_time08:00:132
740499150,14cyclictest0-21swapper/210:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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