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2026-04-09 - 22:46
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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 Thu Apr 09, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7535992323,0cyclictest0-21swapper/208:28:262
7535992314,4cyclictest25971-21python312:25:002
753299220,18cyclictest0-21swapper/007:50:010
7532992121,0cyclictest0-21swapper/011:51:580
753299210,16cyclictest0-21swapper/011:19:110
753599202,17cyclictest0-21swapper/210:45:422
753599200,19cyclictest843-21systemd-network08:11:412
753399206,13cyclictest0-21swapper/108:20:131
753299203,11cyclictest0-21swapper/012:10:150
753599192,16cyclictest8042-21expr10:55:112
7535991915,3cyclictest0-21swapper/207:42:182
7535991915,1cyclictest0-21swapper/208:09:162
753599190,18cyclictest0-21swapper/211:33:392
753599190,18cyclictest0-21swapper/211:33:392
753599190,17cyclictest0-21swapper/212:25:142
753599190,16cyclictest3234-21cron11:45:002
753599190,16cyclictest0-21swapper/208:35:192
7533991915,3cyclictest0-21swapper/111:20:401
753399190,16cyclictest0-21swapper/109:11:301
7532991915,3cyclictest0-21swapper/007:52:160
7532991914,3cyclictest0-21swapper/011:40:140
753599182,1cyclictest22990-21chrt12:18:202
753599182,15cyclictest4693-21nfsd408:55:182
753599182,15cyclictest4693-21nfsd408:55:182
753599182,15cyclictest0-21swapper/212:30:182
7535991816,1cyclictest0-21swapper/211:10:202
7535991815,2cyclictest7842-21apache_accesses07:10:122
7535991815,2cyclictest26435-21interrupts10:30:142
7535991815,2cyclictest11701-21nfsd410:05:182
7535991815,2cyclictest0-21swapper/207:15:142
7535991814,3cyclictest31460-21wc08:45:202
753599180,3cyclictest8963-21python311:55:012
753599180,1cyclictest0-21swapper/211:20:012
753599180,17cyclictest21205-21idleruntime09:25:142
753599180,16cyclictest11503-21python309:10:012
753399182,1cyclictest3991-21H222:10:211
7533991816,1cyclictest0-21swapper/109:50:171
7533991815,2cyclictest32550-21munin-run08:50:001
753399181,16cyclictest13377-21kernelversion12:00:141
753399180,3cyclictest18998-21cron10:17:001
753399180,17cyclictest843-21systemd-network09:09:241
753399180,17cyclictest0-21swapper/112:15:161
7532991816,1cyclictest9-21ksoftirqd/011:45:270
7532991816,1cyclictest0-21swapper/007:15:180
7532991815,2cyclictest25013-21tr07:40:150
753299181,1cyclictest0-21swapper/008:22:080
753299180,17cyclictest1526-21lxd10:46:420
7535991715,1cyclictest0-21swapper/211:35:132
7535991715,1cyclictest0-21swapper/210:10:002
7535991714,2cyclictest8284-21expr10:00:132
7535991714,2cyclictest5155-21expr08:00:142
7535991714,2cyclictest3058-21rs:main2
7535991714,2cyclictest29577-21grep10:35:172
7535991714,2cyclictest25884-21pzem11:25:202
7535991714,2cyclictest21961-21expr11:20:112
7535991714,2cyclictest20393-21nfsd407:30:172
7535991714,2cyclictest17375-21kernelversion07:25:152
753599171,15cyclictest22581-21gpgv10:25:022
753599171,15cyclictest0-21swapper/208:30:132
753599170,2cyclictest843-21systemd-network10:41:352
753599170,2cyclictest5357-21expr09:55:122
753599170,2cyclictest30786-21expr07:50:132
753599170,2cyclictest18956-21nfsd409:20:192
753599170,2cyclictest17496-21cat08:20:202
753599170,2cyclictest16755-21snapd09:35:182
753599170,2cyclictest15698-21chrt07:20:422
753599170,2cyclictest13267-21cpuspeed_turbos08:15:132
753599170,16cyclictest5395-21pzem_power11:45:182
753599170,16cyclictest32219-21grep12:35:122
753599170,16cyclictest29377-21sort07:45:222
753599170,16cyclictest24394-21nfsd409:30:162
753599170,16cyclictest2419-21expr09:50:122
753599170,16cyclictest22150-21cat10:25:012
753599170,16cyclictest15788-21fschecks_count12:05:132
753599170,16cyclictest14457-21nfsd411:05:182
753599170,16cyclictest13006-21expr12:00:112
753599170,16cyclictest12006-21apt-config09:10:012
753599170,16cyclictest11137-21fschecks_count11:00:152
7533991715,1cyclictest11931-21ntpq07:15:181
7533991715,1cyclictest0-21swapper/111:35:201
7533991714,2cyclictest5432-21idleruntime08:00:161
7533991714,2cyclictest3758-21chrt11:45:031
7533991714,2cyclictest29825-21systemctl10:35:201
7533991714,2cyclictest25063-21cut07:40:151
753399171,15cyclictest12802-21chrt11:04:501
753399170,2cyclictest22680-21apt-config10:25:011
753399170,2cyclictest12947-21cron10:10:001
753399170,1cyclictest0-21swapper/110:45:151
753399170,1cyclictest0-21swapper/110:25:011
753399170,16cyclictest9261-21timerwakeupswit08:05:221
753399170,16cyclictest7629-21cut10:55:021
753399170,16cyclictest493-21gdbus11:40:011
753399170,16cyclictest3976-21H222:10:211
753399170,16cyclictest29669-21ls12:30:131
753399170,16cyclictest28170-21sort11:30:151
753399170,16cyclictest28170-21sort11:30:151
753399170,16cyclictest27610-21cat08:40:131
753399170,16cyclictest24966-21ntp_states12:20:181
753399170,16cyclictest2417-21tar07:55:221
753399170,16cyclictest23162-21/usr/sbin/munin09:30:181
753399170,16cyclictest19924-21wc12:10:211
753399170,16cyclictest17144-21fschecks_time07:25:131
753399170,15cyclictest0-21swapper/107:45:181
753299177,9cyclictest0-21swapper/010:40:150
7532991714,2cyclictest9635-21chrt08:08:550
7532991714,2cyclictest7352-21latency_hist10:55:010
7532991714,2cyclictest3957-21sed09:50:180
7532991714,2cyclictest31318-21nfsd408:45:170
7532991714,2cyclictest24569-21ntp_offset09:30:170
7532991714,2cyclictest23723-21cpuspeed_turbos12:20:120
7532991714,2cyclictest22162-21cat07:35:120
7532991714,2cyclictest18590-21runrttasks07:27:490
7532991714,2cyclictest13861-21swap09:10:220
7532991714,2cyclictest11441-21perf09:10:010
7532991714,2cyclictest10316-21apt-get08:10:110
753299170,2cyclictest7164-21chrt09:58:020
753299170,2cyclictest399-20systemd-journal11:25:000
753299170,2cyclictest28706-21expr10:35:140
753299170,2cyclictest22089-21nfsd412:15:180
753299170,2cyclictest1523-21lxd10:26:420
753299170,2cyclictest10070-21cron11:04:550
753299170,2cyclictest0-21swapper/009:00:160
753299170,16cyclictest30320-21/usr/sbin/munin12:30:160
753299170,16cyclictest26397-21apt-key12:25:000
753299170,16cyclictest2249-21rm07:55:210
753299170,16cyclictest21671-21nfsd409:25:180
753299170,16cyclictest20595-21nvmesmart_nvme007:30:180
753299170,16cyclictest15636-21expr12:05:120
753299170,16cyclictest1074-21http_loadtime08:50:150
753299170,16cyclictest0-21swapper/007:10:180
753299170,15cyclictest3987-21H222:10:210
753299170,15cyclictest15945-21lxd08:02:420
7535991614,1cyclictest0-21swapper/212:10:152
7535991614,1cyclictest0-21swapper/208:50:142
7535991614,1cyclictest0-21swapper/208:40:192
7535991613,2cyclictest828-21cstates07:55:142
7535991613,2cyclictest30764-21vmstat09:40:202
7535991613,2cyclictest24390-21awk07:40:002
7535991613,2cyclictest15327-21cat09:15:142
753599160,1cyclictest0-21swapper/211:55:142
753599160,1cyclictest0-21swapper/211:55:142
753599160,15cyclictest31993-21expr09:45:122
753599160,15cyclictest0-21swapper/210:15:012
753599160,15cyclictest0-21swapper/209:00:132
7533991614,1cyclictest201rcuc/112:08:311
7533991614,1cyclictest0-21swapper/112:35:121
7533991614,1cyclictest0-21swapper/111:25:151
7533991614,1cyclictest0-21swapper/111:15:181
7533991614,1cyclictest0-21swapper/111:10:131
7533991614,1cyclictest0-21swapper/109:55:151
7533991614,1cyclictest0-21swapper/108:55:151
7533991614,1cyclictest0-21swapper/108:55:151
7533991614,1cyclictest0-21swapper/108:30:151
7533991614,1cyclictest0-21swapper/108:10:331
7533991614,1cyclictest0-21swapper/107:35:201
7533991614,1cyclictest0-21swapper/107:30:161
7533991614,1cyclictest0-21swapper/107:20:191
7533991614,1cyclictest0-21swapper/107:11:461
753399161,1cyclictest551-21nvmesmart_nvme010:40:191
753399160,2cyclictest10314-21cut11:00:001
753399160,1cyclictest0-21swapper/111:55:011
753399160,1cyclictest0-21swapper/111:55:001
753399160,1cyclictest0-21swapper/108:15:121
753399160,15cyclictest28794-21/usr/sbin/munin09:40:141
753399160,15cyclictest26668-21idleruntime09:35:151
753399160,15cyclictest25835-21expr10:30:131
753399160,15cyclictest18310-21df09:20:161
753399160,15cyclictest16107-21needreboot09:15:171
753399160,15cyclictest13553-21chmod10:10:011
753399160,15cyclictest0-21swapper/111:50:101
753399160,15cyclictest0-21swapper/111:05:171
753399160,15cyclictest0-21swapper/110:00:131
753399160,15cyclictest0-21swapper/109:45:121
753399160,15cyclictest0-21swapper/108:50:171
753399160,15cyclictest0-21swapper/107:50:141
7532991614,1cyclictest13593-21sh10:10:000
7532991614,1cyclictest0-21swapper/011:35:130
7532991614,1cyclictest0-21swapper/010:55:150
7532991614,1cyclictest0-21swapper/010:05:090
7532991614,1cyclictest0-21swapper/009:40:190
7532991614,1cyclictest0-21swapper/009:15:170
7532991614,1cyclictest0-21swapper/007:20:010
7532991613,2cyclictest32639-21cat12:35:130
7532991613,2cyclictest25630-21/usr/sbin/munin10:30:110
7532991613,2cyclictest17746-21cpu09:20:140
753299160,2cyclictest12437-21/usr/sbin/munin12:00:100
753299160,1cyclictest24336-21/usr/sbin/munin08:35:140
753299160,1cyclictest14457-21nfsd411:05:180
753299160,1cyclictest0-21swapper/008:55:170
753299160,1cyclictest0-21swapper/008:55:160
753299160,15cyclictest8890-21apt-get11:55:020
753299160,15cyclictest8890-21apt-get11:55:010
753299160,15cyclictest7745-21/usr/sbin/munin10:00:120
753299160,15cyclictest26813-21cron08:40:010
753299160,15cyclictest0-21swapper/011:30:200
753299160,15cyclictest0-21swapper/011:30:190
753299160,15cyclictest0-21swapper/011:20:120
753299160,15cyclictest0-21swapper/011:10:130
753299160,15cyclictest0-21swapper/010:20:190
753299160,15cyclictest0-21swapper/010:15:140
753299160,15cyclictest0-21swapper/009:45:130
753299160,15cyclictest0-21swapper/008:17:000
7533991514,0cyclictest0-21swapper/109:00:381
7533991513,1cyclictest0-21swapper/112:25:001
753399150,14cyclictest0-21swapper/109:25:131
753299150,14cyclictest0-21swapper/008:30:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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