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2026-07-10 - 17:10
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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