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2026-08-14 - 09:31
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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 Aug 14, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1479099310,30cyclictest0-21swapper/120:55:151
14785992828,0cyclictest0-21swapper/020:40:210
14790992715,7cyclictest15680-21sessionclean20:09:011
1479099244,2cyclictest19231-21sh22:09:011
1479099242,2cyclictest11337-21chrt23:49:061
1478599246,15cyclictest0-21swapper/021:47:250
1478599240,24cyclictest0-21swapper/000:30:160
1479599230,20cyclictest0-21swapper/223:06:172
14790992314,8cyclictest10966-21sort21:55:011
1479099230,2cyclictest20808-21sed22:10:171
1479099230,2cyclictest150092expr23:55:111
1478599230,22cyclictest843-21systemd-network19:56:420
1479099222,19cyclictest23980-21taskset20:24:491
14790992214,7cyclictest30110-21threads22:25:221
1479099221,20cyclictest17343-21missed_timers20:10:181
1479099221,16cyclictest0-21swapper/121:40:001
1479099220,3cyclictest23385-21sshd23:12:031
1479099220,2cyclictest17579-21munin-plugin-st19:15:011
1479099220,21cyclictest8532-21memory22:45:181
1479099220,21cyclictest0-21swapper/121:04:461
1479099220,21cyclictest0-21swapper/100:20:001
1479099220,1cyclictest0-21swapper/123:20:141
1479099220,1cyclictest0-21swapper/121:45:171
1479099220,16cyclictest32256-21gpgv23:30:011
1479099220,16cyclictest24784-21expr20:25:131
1479099220,16cyclictest1522-21lxd23:52:361
1479099220,16cyclictest14331-21ntp_offset22:55:181
1478599220,3cyclictest0-21swapper/022:27:140
1479599214,11cyclictest0-21swapper/222:47:322
14790992115,5cyclictest0-21swapper/119:40:141
14790992114,6cyclictest645-21cat23:30:131
14790992114,6cyclictest5397-21cstates00:35:141
14790992114,6cyclictest5340-21df22:40:151
14790992114,6cyclictest11489-21expr22:50:181
1479099210,2cyclictest29900-21dpkg20:35:021
1479099210,2cyclictest20060-21perf00:05:011
1479099210,2cyclictest15724-21egrep21:05:151
1479099210,20cyclictest4988-21missed_timers20:45:191
1479099210,20cyclictest29344-21expr00:20:141
1479099210,20cyclictest14107-21egrep22:00:131
1479099210,20cyclictest0-21swapper/123:37:581
1479099210,20cyclictest0-21swapper/122:25:001
1479099210,20cyclictest0-21swapper/121:31:181
1479099210,1cyclictest92922chrt20:54:131
1479099210,1cyclictest3719-21ntp_states19:45:191
1479099210,1cyclictest179492chrt23:04:191
1479099210,1cyclictest0-21swapper/123:15:141
1479099210,1cyclictest0-21swapper/123:05:211
1479099210,1cyclictest0-21swapper/100:10:121
1479099210,16cyclictest29092-21wc21:30:011
1479099210,16cyclictest10086-21postgres19:59:281
14785992113,4cyclictest0-21swapper/021:16:270
1478599210,5cyclictest0-21swapper/019:45:010
1479599204,15cyclictest0-21swapper/223:49:502
14795992011,5cyclictest0-21swapper/220:15:142
1479599200,19cyclictest843-21systemd-network20:43:372
14790992018,1cyclictest0-21swapper/121:21:561
14790992014,6cyclictest0-21swapper/120:40:181
14790992014,5cyclictest4035-21H222:10:211
14790992014,5cyclictest0-21swapper/122:39:361
14790992013,6cyclictest21261-21fschecks_time00:05:181
14790992012,5cyclictest0-21swapper/119:50:331
1479099200,1cyclictest22751-21apt-config22:15:011
1479099200,1cyclictest0-21swapper/122:30:211
1479099200,1cyclictest0-21swapper/121:10:151
1479099200,1cyclictest0-21swapper/119:33:131
1479099200,19cyclictest21414-21tr21:15:141
1479099200,19cyclictest0-21swapper/121:57:011
1479099200,19cyclictest0-21swapper/121:40:151
1479099200,19cyclictest0-21swapper/120:38:031
1479099200,19cyclictest0-21swapper/120:15:151
1479099200,19cyclictest0-21swapper/100:33:101
1479099200,19cyclictest0-21swapper/100:26:051
14785992017,2cyclictest7219-21date22:45:010
14785992017,2cyclictest17524-21cat23:00:200
14785992015,3cyclictest0-21swapper/000:30:010
1479599193,15cyclictest0-21swapper/221:56:412
1479599191,16cyclictest9794-21needreboot21:50:212
1479599190,16cyclictest4035-21H222:10:212
1479599190,16cyclictest17427-21df_inode22:05:152
14790991914,4cyclictest0-21swapper/123:40:141
14790991914,4cyclictest0-21swapper/119:20:181
14790991912,6cyclictest23300-21apt-get19:25:131
1479099190,18cyclictest0-21swapper/119:35:141
1479099190,18cyclictest0-21swapper/119:35:141
1478599193,1cyclictest0-21swapper/022:15:010
1478599193,15cyclictest0-21swapper/023:30:010
1478599192,2cyclictest15322-21nfsd422:00:170
14785991917,1cyclictest0-21swapper/022:32:190
14785991916,2cyclictest12179-21chrt20:00:220
14785991916,2cyclictest0-21swapper/019:35:180
14785991916,2cyclictest0-21swapper/019:35:180
14785991915,3cyclictest0-21swapper/022:05:360
14785991915,1cyclictest0-21swapper/000:15:150
14785991914,4cyclictest0-21swapper/023:18:320
1478599190,1cyclictest0-21swapper/023:24:410
1479599183,15cyclictest21828-21cut19:20:202
1479599182,2cyclictest28737-21expr22:25:142
14795991816,1cyclictest0-21swapper/220:25:192
14795991815,2cyclictest31347-21expr22:30:132
14795991815,2cyclictest17948-21cpuspeed_turbos00:00:132
14795991813,4cyclictest0-21swapper/219:11:502
14790991813,4cyclictest0-21swapper/120:00:221
1478599182,2cyclictest3990-21H222:10:210
1478599182,2cyclictest2752-21nfsd422:35:180
14785991817,1cyclictest18867-21latency_hist20:15:010
14785991816,1cyclictest21109-21cut21:15:000
14785991816,1cyclictest19608-21timerwakeupswit00:00:230
14785991816,1cyclictest0-21swapper/023:55:110
14785991816,1cyclictest0-21swapper/023:05:180
14785991816,1cyclictest0-21swapper/019:50:140
14785991815,2cyclictest9417-21cat21:50:180
14785991815,2cyclictest9036-21chrt20:50:430
14785991815,2cyclictest31747-21proc_pri20:35:200
14785991815,2cyclictest31107-21mailstats23:25:210
14785991814,1cyclictest0-21swapper/021:35:000
14785991814,1cyclictest0-21swapper/020:55:140
1478599180,3cyclictest455-21plymouthd21:25:240
1478599180,3cyclictest2007-21systemd-journal19:26:190
1478599180,17cyclictest0-21swapper/022:45:160
1478599180,17cyclictest0-21swapper/020:25:130
1478599180,17cyclictest0-21swapper/000:05:250
1479599172,1cyclictest0-21swapper/220:00:142
14795991715,1cyclictest1108-21lldpd22:03:102
14795991715,1cyclictest0-21swapper/219:30:142
14795991714,2cyclictest916-21df_inode23:30:142
14795991714,2cyclictest9008-21vmstat20:50:212
14795991714,2cyclictest8040-21switchtime23:40:212
14795991714,2cyclictest6483-21sh21:45:162
14795991714,2cyclictest4650-21hddtemp_smartct20:45:182
14795991714,2cyclictest29524-21apache_volume23:25:122
14795991714,2cyclictest28933-21apache_accesses00:20:112
14795991714,2cyclictest27542-21grep00:15:202
14795991714,2cyclictest26767-21/usr/sbin/munin21:25:182
14795991714,2cyclictest23245-21users23:10:222
14795991714,2cyclictest20570-21apt-get00:05:162
14795991714,2cyclictest15706-21apache_accesses21:05:132
14795991714,2cyclictest12744-21/usr/sbin/munin23:50:162
1479599170,2cyclictest27097-21/usr/sbin/munin22:20:202
1479599170,2cyclictest21993-21expr20:20:132
1479599170,2cyclictest18021-21cpuspeed_turbos19:15:152
1479599170,2cyclictest17061-21expr23:00:172
1479599170,16cyclictest7401-21sed00:38:592
1479599170,16cyclictest4269-21wc21:40:182
1479599170,16cyclictest3414-21master19:50:202
1479599170,16cyclictest3273-21apache_accesses23:35:112
1479599170,16cyclictest32373-21hddtemp_smartct00:25:162
1479599170,16cyclictest31214-21sed21:30:232
1479599170,16cyclictest2748-21cut21:40:002
1479599170,16cyclictest27135-21/usr/sbin/munin20:30:132
1479599170,16cyclictest20457-21fschecks_time22:10:152
1479599170,16cyclictest20147-21grep21:10:222
1479599170,16cyclictest15489-21irqstats23:55:142
1479599170,16cyclictest1521-21lxd23:24:362
1479599170,16cyclictest13659-21expr20:05:112
14785991715,1cyclictest0-21swapper/023:50:050
14785991715,1cyclictest0-21swapper/019:45:180
14785991714,2cyclictest7772-21ntp_states23:40:180
14785991714,2cyclictest2988-21grep21:40:140
14785991714,2cyclictest29330-21cstates00:20:130
14785991714,2cyclictest23748-21expr00:10:120
14785991714,2cyclictest22821-21rm22:15:010
14785991714,2cyclictest21580-21cstates23:10:140
14785991714,2cyclictest19216-21cstates20:15:140
14785991714,2cyclictest16769-21switchtime19:10:220
14785991714,2cyclictest15707-21apache_accesses21:05:130
14785991714,1cyclictest0-21swapper/020:30:220
1478599171,15cyclictest0-21swapper/023:35:130
1478599170,2cyclictest4617-21fschecks_time20:45:160
1478599170,2cyclictest13290-21chrt20:05:020
1478599170,2cyclictest13197-21cstates22:55:130
1478599170,2cyclictest12615-21cut21:55:190
1478599170,16cyclictest9474-21cat23:45:130
1478599170,16cyclictest5139-21apache_volume00:35:130
1478599170,16cyclictest32605-21cstates21:35:140
1478599170,16cyclictest27641-21awk19:30:220
1478599170,16cyclictest25743-21cat22:20:130
1478599170,16cyclictest24472-21cat21:20:140
1478599170,16cyclictest22807-21ls20:20:170
1478599170,16cyclictest21719-21uname19:20:180
1478599170,16cyclictest14418-21processes21:00:170
1478599170,16cyclictest10326-21cpuspeed_turbos22:50:140
14795991614,1cyclictest0-21swapper/222:35:142
14795991614,1cyclictest0-21swapper/219:35:142
14795991614,1cyclictest0-21swapper/219:35:142
14795991614,1cyclictest0-21swapper/219:25:142
14795991614,1cyclictest0-21swapper/200:30:112
14795991613,2cyclictest22716-21rm22:15:012
14795991613,2cyclictest11667-21ps20:55:192
1479599160,2cyclictest993-21dbus-daemon19:40:202
1479599160,1cyclictest24290-21cstates23:15:142
1479599160,1cyclictest0-21swapper/220:14:142
1479599160,1cyclictest0-21swapper/219:45:122
1479599160,15cyclictest30234-21dpkg20:35:022
1479599160,15cyclictest25765-21sed21:20:222
1479599160,15cyclictest21711-21cat21:15:142
1479599160,15cyclictest0-21swapper/222:50:142
1479599160,15cyclictest0-21swapper/222:40:112
1479599160,15cyclictest0-21swapper/219:55:132
1479599160,15cyclictest0-21swapper/200:10:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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