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2026-08-17 - 16:06
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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 Mon Aug 17, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13914993324,9cyclictest0-21swapper/109:15:011
13914993029,0cyclictest0-21swapper/112:33:301
1391599282,19cyclictest3986-21H222:10:212
1391599282,19cyclictest3986-21H222:10:212
13914992827,0cyclictest0-21swapper/112:27:001
1391399280,1cyclictest0-21swapper/007:35:130
1391599230,5cyclictest0-21swapper/211:48:512
1391499220,18cyclictest0-21swapper/111:40:251
1391499220,18cyclictest0-21swapper/111:40:251
13913992118,2cyclictest9-21ksoftirqd/010:10:180
1391599204,15cyclictest3991-21H222:10:212
13915992019,0cyclictest0-21swapper/209:50:142
13914992012,4cyclictest0-21swapper/112:12:041
1391499201,18cyclictest31675-21ntp_kernel_pll_08:35:191
1391499200,19cyclictest870-21systemd-logind08:48:521
1391599192,16cyclictest31162-21smartctl12:20:182
1391499193,15cyclictest0-21swapper/107:25:141
13914991917,1cyclictest0-21swapper/110:15:131
13914991917,1cyclictest0-21swapper/108:53:501
1391499190,18cyclictest0-21swapper/110:46:021
1391399193,15cyclictest0-21swapper/008:25:010
1391399190,17cyclictest2647-21python309:40:010
1391599182,15cyclictest21400-21expr11:05:212
13915991816,1cyclictest30178-21apache208:25:012
13915991816,1cyclictest0-21swapper/208:20:142
13915991815,2cyclictest32019-21nfsd407:40:192
13915991814,3cyclictest3351-21lxd07:24:432
13915991814,2cyclictest3979-21H222:10:212
1391599181,16cyclictest12619-21tr08:05:152
1391599180,17cyclictest0-21swapper/210:35:202
1391599180,16cyclictest0-21swapper/209:35:012
13914991818,0cyclictest0-21swapper/111:05:161
13914991816,1cyclictest0-21swapper/109:35:191
13914991815,2cyclictest3976-21H222:10:211
13914991814,3cyclictest863-21avahi-daemon08:25:221
13914991814,3cyclictest3159-21http08:42:311
13914991814,3cyclictest3159-21http08:42:311
13914991814,3cyclictest1035-21thermald12:15:211
13914991812,5cyclictest426-21systemd-udevd11:52:511
1391499180,2cyclictest3981-21H222:10:211
1391499180,17cyclictest27522-21cron11:17:001
1391499180,17cyclictest27522-21cron11:17:001
1391499180,16cyclictest3983-21H222:10:211
1391399182,1cyclictest24542chrt12:29:530
13913991818,0cyclictest0-21swapper/009:15:010
13913991816,1cyclictest0-21swapper/010:00:010
13913991816,1cyclictest0-21swapper/007:10:140
13913991815,2cyclictest3987-21H222:10:210
13913991815,2cyclictest32346-21expr11:25:200
13913991814,3cyclictest23982-21awk11:10:190
1391399181,2cyclictest28984-21cat11:20:140
1391399181,2cyclictest23615-21needreboot07:25:180
1391399180,17cyclictest988-21irqbalance09:30:000
1391399180,16cyclictest843-21systemd-network11:47:520
13915991715,1cyclictest246522sleep207:28:572
13915991715,1cyclictest16022-21cstates11:55:122
13915991715,1cyclictest143612chrt09:56:582
13915991715,1cyclictest0-21swapper/208:55:122
13915991715,1cyclictest0-21swapper/207:30:172
13915991714,2cyclictest870-21systemd-logind10:55:192
13915991714,2cyclictest7411-21latency09:45:162
13915991714,2cyclictest4346-21gpgv08:45:012
13915991714,2cyclictest30382-21apt07:40:012
13915991714,2cyclictest29292-21cat09:30:002
13915991714,2cyclictest2786-21munin-plugin-st09:40:012
13915991714,2cyclictest26984-21/usr/sbin/munin12:15:142
13915991714,2cyclictest22816-21ntpq09:15:182
13915991714,2cyclictest1857-21fschecks_count07:45:152
13915991714,2cyclictest16523-21ps10:00:212
13915991713,3cyclictest5793-21ntp_offset11:35:182
13915991713,2cyclictest31601-21nfsd408:35:192
1391599171,2cyclictest0-21swapper/212:05:192
1391599171,1cyclictest0-21swapper/209:20:172
1391599171,15cyclictest0-21swapper/210:40:172
1391599171,15cyclictest0-21swapper/208:00:142
1391599170,2cyclictest22996-21expr11:10:152
1391599170,2cyclictest1012-21cut11:30:012
1391599170,16cyclictest5648-21ntp_kernel_pll_07:50:192
1391599170,16cyclictest4302-21/usr/sbin/munin09:40:182
1391599170,16cyclictest3983-21H222:10:212
1391599170,16cyclictest29891-21expr10:25:132
1391599170,16cyclictest27158-21/usr/sbin/munin08:30:212
1391599170,16cyclictest25729-21ls11:15:132
1391599170,16cyclictest25729-21ls11:15:132
1391599170,16cyclictest25285-21nvmesmart_nvme012:10:192
1391599170,16cyclictest25134-21netstat10:15:172
1391599170,16cyclictest2501-21cut10:35:012
1391599170,16cyclictest18708-21/usr/sbin/munin09:10:192
1391599170,16cyclictest18179-21cstates10:05:152
1391599170,16cyclictest18087-21/usr/sbin/munin08:15:172
1391599170,16cyclictest14500-21snapd07:18:282
1391599170,16cyclictest14286-21pzem_current11:50:202
1391599170,16cyclictest13069-21munin-node09:00:112
1391599170,16cyclictest12204-21df10:50:152
13914991714,2cyclictest863-21avahi-daemon10:55:191
13914991714,2cyclictest3987-21H222:10:211
13914991714,2cyclictest3983-21H222:10:211
13914991714,2cyclictest29936-21grep11:20:201
13914991714,2cyclictest29344-21chrt08:33:191
13914991714,2cyclictest2069-21systemd-udevd09:24:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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