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2026-07-10 - 18:11
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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 Fri Jul 10, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2422799336,15cyclictest0-21swapper/210:59:552
2422399263,22cyclictest0-21swapper/111:44:151
2422399240,3cyclictest4090-21expr10:20:131
2422399230,2cyclictest26150-21apache_accesses11:00:091
2422399230,2cyclictest10308-21hddtemp_smartct12:25:161
2422399230,1cyclictest3135-21munin-run07:30:011
2422399230,1cyclictest0-21swapper/110:50:201
2421899230,5cyclictest0-21swapper/012:15:010
2422399223,16cyclictest3976-21H222:10:211
24223992214,7cyclictest21789-21awk08:00:181
24223992213,8cyclictest25927-21grep10:00:161
2422399221,2cyclictest18996-21chrt10:45:161
2422399221,20cyclictest3954-21VM22:10:211
2422399221,20cyclictest15329-21cpuspeed_turbos10:40:131
2422399221,20cyclictest0-21swapper/109:10:191
2422399220,3cyclictest16177-21sed11:39:001
2422399220,2cyclictest8207-21vmstat07:35:221
2422399220,2cyclictest8207-21vmstat07:35:221
2422399220,2cyclictest7178-21expr12:20:131
2422399220,2cyclictest3989-21H222:10:211
2422399220,2cyclictest31367-21ntp_kernel_err07:20:181
2422399220,2cyclictest28543-21nfsd410:05:171
2422399220,2cyclictest11479-21expr11:30:131
2422399220,16cyclictest8066-21grep10:25:181
24218992219,2cyclictest19205-21mailstats08:50:220
24218992214,3cyclictest0-21swapper/011:45:260
24218992210,4cyclictest0-21swapper/009:20:000
2422799215,9cyclictest0-21swapper/210:09:522
24227992117,3cyclictest0-21swapper/207:52:392
24223992114,6cyclictest25637-21grep11:55:151
24223992114,6cyclictest24868-21munin-run11:55:001
24223992114,6cyclictest0-21swapper/109:25:151
2422399211,1cyclictest0-21swapper/108:30:261
2422399210,2cyclictest455-21plymouthd07:40:151
2422399210,2cyclictest32229-21expr11:10:131
2422399210,2cyclictest31556-21dpkg09:15:011
2422399210,2cyclictest30323-21kernelversion08:15:191
2422399210,2cyclictest29146-21expr11:05:121
2422399210,2cyclictest24530-21awk08:05:201
2422399210,2cyclictest23807-21ls10:55:151
2422399210,2cyclictest20340-21nfsd409:50:181
2422399210,2cyclictest19462-21taskset08:50:221
2422399210,2cyclictest12720-21expr10:35:121
2422399210,2cyclictest12720-21expr10:35:121
2422399210,2cyclictest11800-21/usr/sbin/munin09:35:171
2422399210,2cyclictest10673-21grep10:30:161
2422399210,2cyclictest10425-21nfsd408:35:181
2422399210,20cyclictest3985-21H222:10:211
2422399210,20cyclictest15945-21lxd07:48:421
2422399210,1cyclictest3008-21http_loadtime11:15:151
2422399210,1cyclictest0-21swapper/112:15:001
2422399210,1cyclictest0-21swapper/111:25:211
2422399210,1cyclictest0-21swapper/110:18:581
2422399210,1cyclictest0-21swapper/107:55:191
2422399210,19cyclictest3983-21H222:10:211
2422399210,16cyclictest7365-21chrt11:22:171
2422399210,16cyclictest12710-21expr12:30:111
2422399210,16cyclictest0-21swapper/108:40:181
2422399210,15cyclictest32543-21munin-run10:15:001
2422399210,15cyclictest32543-21munin-run10:15:001
2422399210,15cyclictest0-21swapper/112:15:111
2422799204,15cyclictest0-21swapper/209:04:492
24223992014,5cyclictest0-21swapper/112:00:191
24223992014,5cyclictest0-21swapper/109:40:121
24223992013,6cyclictest24498-21/usr/sbin/munin07:10:221
2422399200,2cyclictest28582-21nfsd407:15:191
2422399200,1cyclictest30664-21expr12:05:131
2422399200,1cyclictest28653-21python308:15:011
2422399200,1cyclictest0-21swapper/109:55:151
2422399200,1cyclictest0-21swapper/109:45:161
2422399200,1cyclictest0-21swapper/109:45:161
2422399200,1cyclictest0-21swapper/109:05:181
2422399200,1cyclictest0-21swapper/108:45:231
2422399200,1cyclictest0-21swapper/108:20:181
2422399200,19cyclictest0-21swapper/109:00:141
2422399200,15cyclictest0-21swapper/109:25:011
24218992020,0cyclictest0-21swapper/011:20:120
24218992015,3cyclictest4299-21cpuspeed_turbos12:15:130
2421899200,19cyclictest843-21systemd-network10:24:450
2422799193,15cyclictest0-21swapper/207:24:282
24227991915,3cyclictest3992-21H222:10:212
2422799190,2cyclictest3991-21H222:10:212
2422799190,2cyclictest3991-21H222:10:212
2422799190,2cyclictest3976-21H222:10:212
2422799190,18cyclictest3572-21latency_hist12:15:002
2422799190,18cyclictest0-21swapper/209:39:472
2422799190,17cyclictest3989-21H222:10:212
2422799190,16cyclictest4035-21H222:10:212
2422799190,16cyclictest3981-21H222:10:212
2422399190,1cyclictest0-21swapper/107:30:151
2422399190,18cyclictest0-21swapper/107:50:041
2421899193,15cyclictest9-21ksoftirqd/009:37:250
24218991915,3cyclictest4035-21H222:10:210
2421899190,18cyclictest0-21swapper/009:45:130
2421899190,18cyclictest0-21swapper/009:45:120
2421899190,16cyclictest3985-21H222:10:210
2421899190,16cyclictest3985-21H222:10:210
2421899190,16cyclictest3981-21H222:10:210
2421899190,16cyclictest3981-21H222:10:210
2422799182,1cyclictest0-21swapper/211:40:152
24227991817,1cyclictest0-21swapper/209:45:122
24227991817,1cyclictest0-21swapper/209:45:122
24227991815,2cyclictest4035-21H222:10:212
24227991815,2cyclictest28139-21chrt07:15:182
2422799180,3cyclictest3979-21H222:10:212
2422799180,3cyclictest14505-21snapd11:10:272
2422799180,2cyclictest4099-21H222:10:212
2422799180,2cyclictest3976-21H222:10:212
2422799180,17cyclictest3989-21H222:10:212
2422799180,17cyclictest3979-21H222:10:212
2422799180,17cyclictest11749-21fschecks_count11:30:132
2421899188,9cyclictest870-21systemd-logind11:06:510
2421899183,9cyclictest31091-21munin-run09:15:010
24218991816,1cyclictest9-21ksoftirqd/008:36:300
24218991815,2cyclictest605-21cpuspeed_turbos10:15:130
24218991815,2cyclictest3981-21H222:10:210
24218991815,2cyclictest14098-21timerandwakeup12:30:200
24218991814,3cyclictest3983-21H222:10:210
24218991814,3cyclictest3983-21H222:10:210
24218991814,3cyclictest3981-21H222:10:210
2421899180,3cyclictest4786-21find08:25:220
2421899180,3cyclictest3000-21grep09:20:150
2421899180,3cyclictest16358-21munin-run11:40:010
2421899180,2cyclictest4099-21H222:10:210
2421899180,2cyclictest3991-21H222:10:210
2421899180,17cyclictest3991-21H222:10:210
2421899180,17cyclictest3979-21H222:10:210
2421899180,17cyclictest27851-21grep07:15:170
2421899180,17cyclictest10987-21nvmesmart_nvme010:30:180
2421899180,16cyclictest3989-21H222:10:210
2421899180,16cyclictest3981-21H222:10:210
2421899180,16cyclictest0-21swapper/008:58:360
2421899180,15cyclictest3989-21H222:10:210
2421899180,15cyclictest3987-21H222:10:210
24227991715,1cyclictest46372chrt11:17:292
24227991715,1cyclictest3981-21H222:10:212
24227991715,1cyclictest0-21swapper/208:27:032
24227991714,2cyclictest6435-21turbostat.cron12:20:012
24227991714,2cyclictest455-21plymouthd09:05:172
24227991714,2cyclictest4216-21switchtime09:20:212
24227991714,2cyclictest4035-21H222:10:212
24227991714,2cyclictest3985-21H222:10:212
24227991714,2cyclictest3983-21H222:10:212
24227991714,2cyclictest3983-21H222:10:212
24227991714,2cyclictest3983-21H222:10:212
24227991714,2cyclictest3979-21H222:10:212
24227991714,2cyclictest3976-21H222:10:212
24227991714,2cyclictest32510-21cron10:15:012
24227991714,2cyclictest30124-21awk11:05:172
24227991714,2cyclictest24854-21cstates10:00:122
24227991714,2cyclictest1717-21sed08:20:242
24227991714,2cyclictest14453-21taskset10:38:062
24227991714,2cyclictest14453-21taskset10:38:052
24227991713,3cyclictest3989-21H222:10:212
2422799170,2cyclictest3991-21H222:10:212
2422799170,2cyclictest3987-21H222:10:212
2422799170,2cyclictest3987-21H222:10:212
2422799170,2cyclictest3981-21H222:10:212
2422799170,1cyclictest0-21swapper/211:56:202
2422799170,16cyclictest7242-21cstates12:20:122
2422799170,16cyclictest6813-21pzem_power11:20:192
2422799170,16cyclictest6666-21expr07:35:152
2422799170,16cyclictest6666-21expr07:35:142
2422799170,16cyclictest3991-21H222:10:212
2422799170,16cyclictest3985-21H222:10:212
2422799170,16cyclictest3983-21H222:10:212
2422799170,16cyclictest3979-21H222:10:212
2422799170,16cyclictest3976-21H222:10:212
2422799170,16cyclictest29438-21awk12:00:212
2422799170,16cyclictest20340-21nfsd409:50:192
2422799170,16cyclictest14505-21snapd12:05:272
2422799170,16cyclictest14504-21snapd07:25:142
24218991714,2cyclictest8033-21sed07:35:220
24218991714,2cyclictest8033-21sed07:35:220
24218991714,2cyclictest7454-21df_inode12:20:130
24218991714,2cyclictest4099-21H222:10:210
24218991714,2cyclictest3989-21H222:10:210
24218991714,2cyclictest3301-21/usr/sbin/munin07:30:140
24218991714,2cyclictest17981-21cpu10:45:140
24218991714,2cyclictest14161-21timerwakeupswit10:35:210
24218991714,2cyclictest14161-21timerwakeupswit10:35:200
24218991714,1cyclictest0-21swapper/012:25:200
2421899170,2cyclictest4099-21H222:10:210
2421899170,2cyclictest4099-21H222:10:210
2421899170,2cyclictest3985-21H222:10:210
2421899170,2cyclictest3983-21H222:10:210
2421899170,2cyclictest16613-21ntp_kernel_pll_10:40:170
2421899170,2cyclictest14504-21snapd07:52:580
2421899170,2cyclictest14499-21snapd10:55:270
2421899170,2cyclictest1034-21/usr/sbin/munin07:25:170
2421899170,1cyclictest3981-21H222:10:210
2421899170,1cyclictest3981-21H222:10:210
2421899170,1cyclictest0-21swapper/008:16:380
2421899170,16cyclictest3989-21H222:10:210
2421899170,16cyclictest3987-21H222:10:210
2421899170,16cyclictest3985-21H222:10:210
2421899170,16cyclictest3976-21H222:10:210
2421899170,16cyclictest32317-21sort12:05:210
2421899170,16cyclictest23450-21nfsd411:50:180
2421899170,16cyclictest2028-21munin-plugin-st11:15:010
2421899170,16cyclictest20087-21smtp07:59:280
2422799160,15cyclictest4071-21cat10:20:142
2422799160,15cyclictest32742-21latency09:15:172
2422799160,15cyclictest0-21swapper/210:10:132
2422799160,15cyclictest0-21swapper/210:10:132
2422799160,14cyclictest0-21swapper/207:30:242
24218991614,1cyclictest16808-21dpkg11:40:120
24218991614,1cyclictest0-21swapper/011:25:100
2421899160,1cyclictest101rcuc/012:00:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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