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2026-04-09 - 21:44
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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