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2026-08-18 - 00:29
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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 376 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
13914991714,2cyclictest20532-21python308:20:011
13914991714,2cyclictest17224-21taskset10:03:131
13914991714,2cyclictest11624-21apache_accesses10:50:121
1391499170,2cyclictest3983-21H222:10:211
1391499170,2cyclictest3053-21systemd-logind07:53:521
1391499170,2cyclictest1286-21cpuspeed_turbos07:45:141
1391499170,2cyclictest12339-21python309:00:001
1391499170,1cyclictest3991-21H222:10:211
1391499170,1cyclictest0-21swapper/109:45:211
1391499170,16cyclictest863-21avahi-daemon08:20:221
1391499170,16cyclictest3976-21H222:10:211
1391499170,16cyclictest32709-21df_inode10:30:161
1391499170,16cyclictest3025-21/usr/sbin/munin11:30:211
1391499170,16cyclictest29655-21apache_accesses09:30:111
1391499170,16cyclictest15818-21cstates11:55:121
1391499170,16cyclictest14566-21taskset08:07:001
1391499170,16cyclictest13591-21expr09:00:131
1391499170,16cyclictest1079-21cups-browsed09:15:211
1391499170,16cyclictest10019-21/usr/sbin/munin11:45:121
1391499170,15cyclictest0-21swapper/111:25:171
1391399172,1cyclictest25372-21cpuspeed_turbos07:30:130
13913991715,1cyclictest0-21swapper/011:15:200
13913991715,1cyclictest0-21swapper/011:15:190
13913991715,1cyclictest0-21swapper/010:34:300
13913991714,2cyclictest824-21latency_hist07:45:000
13913991714,2cyclictest6674-21cpuspeed_turbos09:45:130
13913991714,2cyclictest3053-21systemd-logind10:52:520
13913991714,2cyclictest22681-21grep09:15:180
13913991714,2cyclictest18878-21idleruntime08:15:160
13913991714,2cyclictest11074-21sed09:50:180
1391399171,15cyclictest259222sleep010:16:020
1391399170,2cyclictest4986-21df_inode11:35:130
1391399170,2cyclictest426-21systemd-udevd10:04:520
1391399170,2cyclictest3053-21systemd-logind11:34:520
1391399170,2cyclictest27663-21sed10:20:170
1391399170,2cyclictest25829-21chrt12:10:310
1391399170,2cyclictest2069-21systemd-udevd09:22:520
1391399170,2cyclictest19185-21nfsd410:05:190
1391399170,2cyclictest1348-21lxd08:14:430
1391399170,16cyclictest8605-21ntp_states08:50:180
1391399170,16cyclictest5942-21ps08:45:220
1391399170,16cyclictest5773-21apache_accesses10:40:130
1391399170,16cyclictest3616-21/usr/sbin/munin09:40:150
1391399170,16cyclictest2378-21cut08:40:210
1391399170,16cyclictest2378-21cut08:40:210
1391399170,16cyclictest20700-21cat11:05:160
1391399170,16cyclictest18345-21awk11:00:180
1391399170,16cyclictest17623-21cut07:15:160
1391399170,16cyclictest15206-21latency_hist08:10:010
1391399170,16cyclictest15029-21fschecks_time10:55:140
1391399170,15cyclictest0-21swapper/011:59:540
13915991614,1cyclictest14614-21cstates07:10:142
13915991614,1cyclictest0-21swapper/211:40:172
13915991614,1cyclictest0-21swapper/211:40:172
13915991614,1cyclictest0-21swapper/210:10:172
13915991614,1cyclictest0-21swapper/209:05:142
1391599160,2cyclictest6523-21df_inode12:35:142
1391599160,1cyclictest0-21swapper/211:00:052
1391599160,15cyclictest8472-21/usr/sbin/munin10:45:172
1391599160,15cyclictest28499-21cat10:20:212
1391599160,15cyclictest18589-21cstates12:00:142
1391599160,15cyclictest0-21swapper/211:30:172
1391599160,15cyclictest0-21swapper/208:50:182
1391599160,15cyclictest0-21swapper/207:55:132
13914991614,1cyclictest0-21swapper/112:00:141
13914991614,1cyclictest0-21swapper/111:35:131
13914991614,1cyclictest0-21swapper/110:35:161
13914991614,1cyclictest0-21swapper/109:40:161
13914991614,1cyclictest0-21swapper/109:05:121
13914991614,1cyclictest0-21swapper/107:55:131
13914991614,1cyclictest0-21swapper/107:35:151
13914991613,2cyclictest18167-21memory11:00:171
1391499160,1cyclictest17500-21expr07:15:151
1391499160,15cyclictest4502chrt07:42:091
1391499160,15cyclictest15772-21cut07:10:211
1391499160,15cyclictest0-21swapper/110:40:161
1391499160,15cyclictest0-21swapper/109:55:151
1391499160,15cyclictest0-21swapper/109:50:101
1391499160,15cyclictest0-21swapper/109:25:121
1391499160,15cyclictest0-21swapper/108:10:221
1391499160,15cyclictest0-21swapper/108:00:141
1391499160,15cyclictest0-21swapper/107:30:171
1391499160,15cyclictest0-21swapper/107:20:141
13913991614,1cyclictest0-21swapper/012:35:130
13913991614,1cyclictest0-21swapper/012:15:190
13913991614,1cyclictest0-21swapper/011:40:210
13913991614,1cyclictest0-21swapper/011:40:210
13913991614,1cyclictest0-21swapper/010:25:130
13913991614,1cyclictest0-21swapper/009:00:200
13913991614,1cyclictest0-21swapper/008:35:010
1391399161,14cyclictest0-21swapper/008:00:010
1391399160,2cyclictest10988-21awk08:00:180
1391399160,1cyclictest0-21swapper/012:30:210
1391399160,1cyclictest0-21swapper/008:20:010
1391399160,15cyclictest9939-21apache_accesses08:55:110
1391399160,15cyclictest4475-21expr07:50:140
1391399160,15cyclictest399-20systemd-journal12:05:010
1391399160,15cyclictest28537-21ntp_kernel_err08:30:170
1391399160,15cyclictest19703-21/usr/sbin/munin07:20:130
1391399160,15cyclictest0-21swapper/012:00:150
1391399160,15cyclictest0-21swapper/011:50:210
1391399160,15cyclictest0-21swapper/010:45:160
1391399160,15cyclictest0-21swapper/010:35:130
1391399160,15cyclictest0-21swapper/009:30:110
1391399160,15cyclictest0-21swapper/007:45:140
1391399150,1cyclictest0-21swapper/009:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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