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2026-04-29 - 07:11
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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 Wed Apr 29, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136199239,13cyclictest0-21swapper/121:23:581
136199230,5cyclictest0-21swapper/122:41:101
136799217,13cyclictest0-21swapper/219:23:432
136199213,17cyclictest0-21swapper/121:18:141
136199210,3cyclictest0-21swapper/123:27:401
1357992115,3cyclictest0-21swapper/023:48:500
135799210,3cyclictest0-21swapper/021:47:430
135799210,20cyclictest0-21swapper/023:57:350
136199205,0cyclictest0-21swapper/123:35:191
136199201,13cyclictest0-21swapper/122:49:071
1367991915,2cyclictest29655-21nfsd423:40:202
1367991915,2cyclictest29655-21nfsd423:40:192
136799190,18cyclictest843-21systemd-network00:23:462
136799190,16cyclictest3979-21H222:10:212
1361991917,1cyclictest17314-21cat19:30:151
1361991917,1cyclictest0-21swapper/123:12:351
1361991917,1cyclictest0-21swapper/120:36:481
1361991916,2cyclictest0-21swapper/119:20:161
136199190,3cyclictest0-21swapper/123:30:201
135799192,2cyclictest1666-21cpuspeed_turbos20:00:140
1357991916,2cyclictest14550-21snapd20:45:100
1357991914,3cyclictest14550-21snapd20:40:490
135799190,18cyclictest0-21swapper/022:06:580
135799190,16cyclictest4099-21H222:10:210
136799182,15cyclictest291562chrt22:41:332
1367991816,1cyclictest0-21swapper/200:36:332
1367991815,2cyclictest5747-21nfsd423:55:172
1367991815,2cyclictest3976-21H222:10:212
1367991815,2cyclictest2967-21cut19:10:202
1367991815,2cyclictest11572-21processes22:10:192
1367991814,3cyclictest0-21swapper/222:05:152
136799181,16cyclictest8899-21cpuspeed_turbos23:05:132
136799181,16cyclictest18604-21nvmesmart_nvme021:25:202
136799181,16cyclictest13902-21tr19:25:142
136799180,17cyclictest2007-21systemd-journal21:41:442
136799180,17cyclictest15123-21smtp22:19:492
136799180,16cyclictest3983-21H222:10:212
136799180,16cyclictest3981-21H222:10:212
136199182,15cyclictest303302chrt23:41:061
136199182,15cyclictest303302chrt23:41:051
1361991817,1cyclictest21-21ksoftirqd/119:56:151
1361991815,2cyclictest2731-21date21:00:001
1361991814,3cyclictest14501-21snapd19:42:581
1361991813,4cyclictest0-21swapper/121:07:571
136199181,1cyclictest0-21swapper/100:26:321
136199181,16cyclictest0-21swapper/120:05:171
136199180,17cyclictest0-21swapper/120:03:011
136199180,16cyclictest10213-21cpuspeed_turbos00:05:141
135799182,1cyclictest0-21swapper/022:10:500
135799182,1cyclictest0-21swapper/022:00:310
135799182,15cyclictest9186-21timerwakeupswit00:00:220
1357991815,2cyclictest30825-21chrt19:55:040
1357991814,3cyclictest14505-21snapd20:50:300
135799180,2cyclictest3991-21H222:10:210
135799180,2cyclictest3976-21H222:10:210
135799180,2cyclictest15672-21nfsd421:20:190
135799180,16cyclictest3976-21H222:10:210
135799180,16cyclictest3976-21H222:10:210
135799180,16cyclictest2007-21systemd-journal23:29:480
1367991715,1cyclictest67212sleep219:16:052
1367991715,1cyclictest28-21ksoftirqd/220:50:412
1367991715,1cyclictest25818-21timerwakeupswit00:30:222
1367991714,2cyclictest4714-21nfsd421:00:192
1367991714,2cyclictest3987-21H222:10:212
1367991714,2cyclictest3981-21H222:10:212
1367991714,2cyclictest3976-21H222:10:212
1367991714,2cyclictest3053-21systemd-logind23:32:522
1367991714,2cyclictest26977-21find23:35:212
1367991714,2cyclictest20188-21cstates23:25:152
1367991714,2cyclictest18752-21sendmail_mailst23:20:182
1367991714,2cyclictest16768-21grep22:20:182
1367991714,2cyclictest14926-21chrt20:21:092
1367991714,2cyclictest1079-21cups-browsed22:25:222
1367991714,2cyclictest0-21swapper/220:45:162
136799171,1cyclictest4099-21H222:10:212
136799170,2cyclictest3985-21H222:10:212
136799170,2cyclictest3979-21H222:10:212
136799170,2cyclictest31501-21switchtime22:45:212
136799170,2cyclictest29650-21ntp_offset21:45:182
136799170,2cyclictest14504-21snapd22:30:272
136799170,16cyclictest9592-21munin-run00:05:002
136799170,16cyclictest8375-21sort21:09:002
136799170,16cyclictest7549-21cut20:10:142
136799170,16cyclictest3983-21H222:10:212
136799170,16cyclictest3976-21H222:10:212
136799170,16cyclictest32080-21missed_timers21:50:182
136799170,16cyclictest25293-21sed22:35:202
136799170,16cyclictest22103-21apache_volume19:40:122
136799170,16cyclictest2069-21systemd-udevd19:48:522
136799170,16cyclictest1827-21wc22:50:232
136799170,16cyclictest1611-21cut23:50:122
136799170,16cyclictest15762-21cpuspeed_turbos20:25:152
136799170,16cyclictest15115-21fschecks_time23:15:142
136799170,16cyclictest0-21swapper/220:30:162
1361991715,1cyclictest0-21swapper/123:55:131
1361991715,1cyclictest0-21swapper/120:10:271
1361991714,2cyclictest863-21avahi-daemon20:40:221
1361991714,2cyclictest8219-21apt-config19:17:471
1361991714,2cyclictest3989-21H222:10:211
1361991714,2cyclictest3092-21/usr/sbin/munin22:55:181
1361991714,2cyclictest23921-21/usr/sbin/munin00:30:161
1361991714,2cyclictest15945-21lxd22:26:491
1361991714,2cyclictest12987-21/usr/sbin/munin00:10:211
1361991714,2cyclictest12719-21latency_hist20:20:011
1361991714,2cyclictest0-21swapper/119:50:471
1361991714,1cyclictest0-21swapper/123:00:141
1361991714,1cyclictest0-21swapper/119:45:551
1361991713,3cyclictest2007-21systemd-journal22:19:491
1361991713,3cyclictest14504-21snapd23:20:491
136199171,1cyclictest21350-21open_inodes21:30:201
136199171,1cyclictest21350-21open_inodes21:30:191
136199171,15cyclictest16447-21if_eno120:25:171
136199170,2cyclictest3976-21H222:10:211
136199170,2cyclictest20663-21pickup00:35:141
136199170,2cyclictest1523-21lxd21:00:491
136199170,1cyclictest0-21swapper/121:35:131
136199170,16cyclictest8959-21/usr/sbin/munin21:10:171
136199170,16cyclictest3981-21H222:10:211
136199170,16cyclictest3351-21lxd20:34:491
136199170,16cyclictest2732-21awk21:55:181
136199170,16cyclictest19197-21apache_accesses19:35:131
136199170,16cyclictest18509-21apache_volume00:20:121
136199170,16cyclictest16921-21nfsd422:20:171
136199170,16cyclictest16376-21users23:15:221
136199170,16cyclictest16044-21cron19:30:001
136199170,16cyclictest15247-21perf20:25:001
1357991715,1cyclictest5882sleep021:51:330
1357991715,1cyclictest0-21swapper/021:25:180
1357991714,2cyclictest6798-21smartctl21:05:170
1357991714,2cyclictest5922-21pluginstate21:05:000
1357991714,2cyclictest3983-21H222:10:210
1357991714,2cyclictest30044-21gpgconf19:51:260
1357991714,2cyclictest27029-21gpgv22:40:010
1357991714,2cyclictest26199-21idleruntime23:35:150
1357991714,2cyclictest25140-21cat19:45:130
1357991714,2cyclictest16960-21grep00:15:190
1357991713,3cyclictest0-21swapper/020:33:200
135799171,15cyclictest8482-21missed_timers20:10:170
135799170,2cyclictest3991-21H222:10:210
135799170,2cyclictest1961-21cat23:50:140
135799170,2cyclictest16770-21expr19:30:130
135799170,2cyclictest14545-21snapd22:35:280
135799170,1cyclictest4099-21H222:10:210
135799170,16cyclictest3989-21H222:10:210
135799170,16cyclictest32560-21/usr/sbin/munin20:55:160
135799170,16cyclictest31065-21grep22:45:180
135799170,16cyclictest26728-21/usr/sbin/munin21:40:190
135799170,16cyclictest23630-21latency23:30:160
135799170,16cyclictest21486-21/usr/sbin/munin20:35:160
135799170,16cyclictest21135-21grep22:30:150
135799170,16cyclictest14495-21snapd23:17:580
135799170,16cyclictest1348-21lxd23:02:480
135799170,16cyclictest12984-21awk23:10:200
135799170,16cyclictest12423-21cut21:15:160
135799170,16cyclictest0-21swapper/019:15:430
135799170,15cyclictest3989-21H222:10:210
1367991614,1cyclictest11769-21cpuspeed_turbos23:10:142
1367991614,1cyclictest0-21swapper/223:05:022
1367991614,1cyclictest0-21swapper/221:15:182
1367991614,1cyclictest0-21swapper/220:55:182
1367991613,2cyclictest11167-21chrt21:13:392
1367991613,1cyclictest0-21swapper/200:25:162
136799161,1cyclictest0-21swapper/220:45:012
136799160,2cyclictest3118-21apache_volume22:55:122
136799160,2cyclictest10786-21fschecks_count20:15:132
136799160,1cyclictest5855-21ntp_kernel_err22:00:182
136799160,1cyclictest14700-21cpuspeed_turbos21:20:142
136799160,1cyclictest0-21swapper/219:30:182
136799160,15cyclictest1284-21kerneloops21:31:572
136799160,15cyclictest1284-21kerneloops21:31:572
1361991614,1cyclictest17203-21apt-get21:25:131
1361991614,1cyclictest0-21swapper/122:00:201
1361991614,1cyclictest0-21swapper/120:50:021
1361991613,2cyclictest7642-21expr22:05:151
136199160,2cyclictest30992-21taskset21:50:141
136199160,2cyclictest21514-21expr22:30:151
136199160,1cyclictest0-21swapper/123:50:141
136199160,1cyclictest0-21swapper/119:10:351
136199160,1cyclictest0-21swapper/100:00:181
136199160,15cyclictest31558-21expr23:45:141
136199160,15cyclictest0-21swapper/123:05:141
136199160,15cyclictest0-21swapper/122:10:141
136199160,15cyclictest0-21swapper/121:40:191
136199160,15cyclictest0-21swapper/120:50:211
1357991614,1cyclictest0-21swapper/023:40:170
1357991614,1cyclictest0-21swapper/023:40:170
1357991614,1cyclictest0-21swapper/022:25:140
1357991614,1cyclictest0-21swapper/022:20:120
1357991614,1cyclictest0-21swapper/022:15:150
1357991614,1cyclictest0-21swapper/021:10:240
1357991614,1cyclictest0-21swapper/020:15:170
1357991614,1cyclictest0-21swapper/019:35:150
135799160,1cyclictest3981-21H222:10:210
135799160,15cyclictest27425-21idleruntime00:35:150
135799160,15cyclictest25344-21ntp_states00:30:200
135799160,15cyclictest24026-21ntp_offset21:35:180
135799160,15cyclictest17204-21apt-get23:20:110
135799160,15cyclictest0-21swapper/019:25:150
135799160,15cyclictest0-21swapper/019:20:120
135799160,15cyclictest0-21swapper/000:25:170
135799160,15cyclictest0-21swapper/000:05:130
135799150,14cyclictest0-21swapper/022:55:170
135799150,0cyclictest0-21swapper/022:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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