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2026-08-11 - 00:09
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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 Mon Aug 10, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2210499253,21cyclictest0-21swapper/208:23:012
2210499232,2cyclictest30850-21chrt09:19:112
2210499230,3cyclictest12965-21sed11:39:002
2210499230,2cyclictest7722-21expr09:35:122
2210499230,2cyclictest6225-21chrt10:28:152
2210499230,2cyclictest20916-21expr10:55:122
2210499230,2cyclictest1786-21basename10:20:142
2210499230,16cyclictest15957-21idleruntime-cro09:50:012
2210299230,5cyclictest0-21swapper/011:17:100
2210499222,1cyclictest0-21swapper/209:01:052
2210499222,1cyclictest0-21swapper/209:01:052
2210499221,1cyclictest0-21swapper/212:20:552
2210499220,2cyclictest9127-21date12:30:002
2210499220,2cyclictest9127-21date12:30:002
2210499220,2cyclictest5153-21cat07:35:182
2210499220,2cyclictest31178-21tune2fs10:15:132
2210499220,2cyclictest27610-21chrt12:05:062
2210499220,2cyclictest21877-21gpg-connect-age11:55:002
2210499220,2cyclictest19869-21awk09:00:012
2210499220,2cyclictest19068-21grep10:50:192
2210499220,2cyclictest18856-21expr08:00:152
2210499220,2cyclictest1064-21if_lxdbr008:25:162
2210499220,20cyclictest1522-21lxd09:40:422
2210499220,1cyclictest7886-21/usr/sbin/munin07:40:172
2210499220,1cyclictest244802chrt07:12:012
2210499220,1cyclictest0-21swapper/210:00:162
2210499220,1cyclictest0-21swapper/209:25:142
2210499220,16cyclictest7799-21tr08:35:192
2210499220,16cyclictest26363-21expr11:05:132
2210499220,16cyclictest15855-21cat07:55:122
22102992219,2cyclictest0-21swapper/011:45:000
2210499212,18cyclictest0-21swapper/210:10:012
22104992114,6cyclictest8916-21chrt10:32:562
22104992114,6cyclictest15917-21cron09:50:032
22104992114,6cyclictest15917-21cron09:50:032
22104992114,6cyclictest10308-21cat12:30:182
22104992113,7cyclictest15870-21hddtemp_smartct10:45:162
2210499211,16cyclictest27425-21seq07:19:512
2210499211,15cyclictest1581-21taskset11:18:362
2210499210,2cyclictest1582-21cut09:25:002
2210499210,2cyclictest13396-21ls07:50:162
2210499210,20cyclictest25414-21ntp_offset08:10:192
2210499210,20cyclictest23411-21ls09:05:142
2210499210,20cyclictest0-21swapper/210:00:022
2210499210,20cyclictest0-21swapper/208:42:312
2210499210,20cyclictest0-21swapper/207:20:172
2210499210,1cyclictest0-21swapper/211:20:242
2210499210,1cyclictest0-21swapper/210:35:162
2210499210,1cyclictest0-21swapper/208:20:012
2210499210,1cyclictest0-21swapper/207:25:242
2210499210,16cyclictest27574-21sort09:10:222
2210499210,15cyclictest4918-21grep09:30:142
22104992015,4cyclictest0-21swapper/207:30:542
22104992013,6cyclictest3245-21seq12:18:182
22104992013,6cyclictest13134-21http_loadtime10:40:162
22104992012,7cyclictest32510-21postgres12:10:482
2210499200,2cyclictest4168-21expr08:30:142
2210499200,2cyclictest14704-21needreboot11:40:192
2210499200,2cyclictest13444-21awk12:35:162
2210499200,1cyclictest25637-21grep10:05:152
2210499200,1cyclictest0-21swapper/211:45:152
2210499200,1cyclictest0-21swapper/208:50:232
2210499200,1cyclictest0-21swapper/208:47:082
2210499200,19cyclictest0-21swapper/211:55:192
2210499200,15cyclictest21332-21expr08:05:152
2210499200,15cyclictest0-21swapper/212:04:102
2210499200,15cyclictest0-21swapper/211:00:152
2210299200,17cyclictest0-21swapper/012:20:180
22104991913,5cyclictest3414-21master11:27:132
2210499190,18cyclictest0-21swapper/211:30:172
22103991916,2cyclictest5185-21missed_timers07:35:181
22103991916,2cyclictest5091-21ntp_kernel_pll_08:30:191
22103991914,3cyclictest399-20systemd-journal09:45:001
2210399190,1cyclictest0-21swapper/107:13:231
2210399190,18cyclictest843-21systemd-network11:48:401
2210299190,1cyclictest0-21swapper/009:35:010
22104991813,4cyclictest0-21swapper/211:10:142
2210399182,15cyclictest12648-21cpuspeed_turbos07:50:141
22103991816,1cyclictest0-21swapper/110:25:171
22103991815,2cyclictest2473-21tune2fs09:25:141
2210399181,2cyclictest18537-21cpuspeed_turbos08:00:141
2210299182,15cyclictest0-21swapper/011:11:590
22102991816,1cyclictest0-21swapper/010:10:140
22102991816,1cyclictest0-21swapper/009:50:000
22102991815,3cyclictest0-21swapper/010:20:000
22102991812,3cyclictest0-21swapper/009:16:160
2210299181,16cyclictest6959-21cpuspeed_turbos12:25:140
2210299181,16cyclictest6959-21cpuspeed_turbos12:25:140
2210299180,1cyclictest0-21swapper/012:10:220
2210299180,17cyclictest3985-21H222:10:210
2210299180,17cyclictest3985-21H222:10:210
2210299180,15cyclictest0-21swapper/010:50:140
2210399172,15cyclictest3211-21JS22:10:211
22103991717,0cyclictest0-21swapper/110:01:141
22103991715,1cyclictest0-21swapper/111:12:151
22103991715,1cyclictest0-21swapper/111:05:211
22103991714,2cyclictest8502-21df_inode11:30:151
22103991714,2cyclictest8363-21ntp_kernel_pll_07:40:191
22103991714,2cyclictest5905-21hddtemp_smartct11:25:161
22103991714,2cyclictest2938-21hddtemp_smartct11:20:161
22103991714,2cyclictest22737-21sh11:55:151
22103991714,2cyclictest22450-21cat10:55:221
22103991714,2cyclictest17883-21apache_accesses10:50:121
22103991714,2cyclictest15415-21gpgv07:55:011
22103991714,2cyclictest15172-21ls08:50:151
22103991714,2cyclictest14496-21snapd07:27:351
22103991714,2cyclictest13432-21awk12:35:171
22103991714,2cyclictest11766-21sed11:35:181
22103991714,2cyclictest10515-21grep08:40:191
2210399171,15cyclictest7019-21seq12:25:141
2210399171,15cyclictest7019-21seq12:25:141
2210399170,2cyclictest9293-21cron07:49:551
2210399170,2cyclictest399-20systemd-journal08:20:011
2210399170,2cyclictest28040-21cut07:20:141
2210399170,2cyclictest27908-21expr12:05:141
2210399170,2cyclictest21115-21/usr/sbin/munin08:05:131
2210399170,2cyclictest1516-21lxd09:24:421
2210399170,1cyclictest0-21swapper/112:10:181
2210399170,16cyclictest9624-21cut12:30:141
2210399170,16cyclictest6053-21nfsd409:30:201
2210399170,16cyclictest3983-21H222:10:211
2210399170,16cyclictest30848-21nfsd408:20:181
2210399170,16cyclictest30731-21cpuspeed_turbos10:15:131
2210399170,16cyclictest29794-21chrt10:10:361
2210399170,16cyclictest26350-21nfsd407:15:181
2210399170,16cyclictest2409-21ntp_states10:20:181
2210399170,16cyclictest23355-21apache_accesses11:00:111
2210399170,16cyclictest1451-21nfsd408:25:181
2210399170,15cyclictest21394-21python311:55:001
22102991715,1cyclictest0-21swapper/007:20:160
22102991714,2cyclictest6366-21latency_hist10:30:010
22102991714,2cyclictest399-20systemd-journal08:34:550
22102991714,2cyclictest3983-21H222:10:210
22102991714,2cyclictest27924-21chrt08:15:170
22102991714,2cyclictest2569-21apt-get08:30:000
22102991714,2cyclictest21159-21sort09:55:230
22102991714,2cyclictest20039-21switchtime08:00:220
22102991714,2cyclictest17098-21cron08:55:000
22102991714,2cyclictest1707-21grep07:30:140
22102991714,2cyclictest14500-21snapd10:35:270
22102991714,2cyclictest13182-21date11:40:000
22102991714,2cyclictest11547-21chrt08:43:530
22102991714,2cyclictest11251-21idleruntime09:40:140
22102991714,2cyclictest0-21swapper/010:09:010
2210299170,2cyclictest8583-21cat10:30:230
2210299170,2cyclictest5601-21lxd12:16:420
2210299170,2cyclictest5601-21lxd07:58:430
2210299170,2cyclictest3900-21latency_hist10:25:020
2210299170,2cyclictest31550-21expr09:20:130
2210299170,2cyclictest27855-21timerandwakeup11:05:220
2210299170,2cyclictest12057-21basename07:50:000
2210299170,16cyclictest8873-21nfsd409:35:180
2210299170,16cyclictest8766-21/usr/sbin/munin11:30:170
2210299170,16cyclictest7780-21nfsd408:35:180
2210299170,16cyclictest5652-21mailstats07:35:210
2210299170,16cyclictest4035-21H222:10:210
2210299170,16cyclictest3414-21master11:55:140
2210299170,16cyclictest26369-21grep07:15:170
2210299170,16cyclictest24899-21apache_processe12:00:130
2210299170,16cyclictest24699-21fschecks_time08:10:150
2210299170,16cyclictest21445-21head09:00:200
2210299170,16cyclictest21445-21head09:00:190
2210299170,16cyclictest16975-21sed10:45:220
2210299170,16cyclictest16326-21/usr/sbin/munin08:50:210
2210299170,16cyclictest16263-21trivial-rewrite11:45:040
2210299170,16cyclictest1521-21lxd10:02:420
2210299170,16cyclictest12328-21cut12:35:120
2210299170,16cyclictest0-21swapper/008:20:130
22103991614,1cyclictest3985-21H222:10:211
22103991614,1cyclictest24119-21sed09:05:171
22103991614,1cyclictest0-21swapper/112:15:131
22103991614,1cyclictest0-21swapper/112:00:151
22103991614,1cyclictest0-21swapper/111:40:201
22103991614,1cyclictest0-21swapper/111:15:151
22103991614,1cyclictest0-21swapper/109:55:221
22103991614,1cyclictest0-21swapper/109:50:031
22103991614,1cyclictest0-21swapper/109:50:031
22103991614,1cyclictest0-21swapper/109:45:001
22103991614,1cyclictest0-21swapper/109:35:151
22103991614,1cyclictest0-21swapper/109:01:261
22103991614,1cyclictest0-21swapper/109:01:251
22103991614,1cyclictest0-21swapper/108:37:441
22103991614,1cyclictest0-21swapper/108:12:231
22103991614,1cyclictest0-21swapper/107:30:131
22103991613,2cyclictest28808-21expr09:15:151
2210399160,2cyclictest11040-21pzem_power10:35:211
2210399160,1cyclictest13170-21missed_timers08:45:161
2210399160,15cyclictest18877-21nfsd408:55:211
2210399160,15cyclictest12416-21apache_accesses10:40:121
2210399160,15cyclictest0-21swapper/110:30:141
2210399160,15cyclictest0-21swapper/110:05:171
22102991614,1cyclictest0-21swapper/012:05:130
22102991614,1cyclictest0-21swapper/011:29:270
22102991614,1cyclictest0-21swapper/010:40:180
22102991613,2cyclictest22612-21chrt10:56:080
2210299160,2cyclictest31609-21latency07:25:190
2210299160,1cyclictest0-21swapper/011:00:110
2210299160,15cyclictest2852-21cat09:25:160
2210299160,15cyclictest0-21swapper/012:30:160
2210299160,15cyclictest0-21swapper/011:50:120
2210299160,15cyclictest0-21swapper/011:20:150
2210299160,15cyclictest0-21swapper/009:05:150
2210299160,15cyclictest0-21swapper/008:45:210
2210299160,15cyclictest0-21swapper/008:05:150
22102991513,1cyclictest0-21swapper/009:10:180
2210299150,14cyclictest0-21swapper/007:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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