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2025-07-19 - 23:12
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Sat Jul 19, 2025 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191227161,22phc2sys0-21swapper/307:07:593
129392207174,22sleep10-21swapper/107:07:481
128532203171,22sleep20-21swapper/207:06:412
128812202169,22sleep00-21swapper/007:07:030
1340099604,11cyclictest9035-21switchtime10:20:270
1340099603,11cyclictest0-21swapper/007:10:150
1340099596,15cyclictest0-21swapper/011:40:180
1340099595,15cyclictest25598-21systemctl10:55:300
1340099594,10cyclictest14324-21cron08:20:000
1340099589,9cyclictest24624-21df_abs08:40:220
1340099588,10cyclictest2633-21grep09:00:230
1340099586,10cyclictest3732-21sed07:55:210
1340099585,11cyclictest10473-21grep09:15:290
1340099584,11cyclictest31824-21cat10:00:290
1340099584,11cyclictest29201-21cpuspeed_turbos08:50:150
1340099584,11cyclictest17928-21latency_hist07:20:010
1340099582,16cyclictest0-21swapper/012:25:040
1340099578,9cyclictest3353-21sed10:10:200
1340099578,9cyclictest1826-21timerwakeupswit07:50:260
1340099576,9cyclictest31957-21if_enp1s008:55:200
1340099576,10cyclictest9063-21sed11:30:160
1340099573,17cyclictest0-21swapper/008:10:250
1340099573,11cyclictest0-21swapper/012:00:250
1340099572,17cyclictest0-21swapper/008:30:230
1340099566,9cyclictest18263-21latency_hist09:35:000
1340099566,10cyclictest25608-21sed07:35:160
1340099565,9cyclictest29207-21cat11:05:170
1340099565,9cyclictest29207-21cat11:05:170
1340099565,18cyclictest654-21gdbus08:25:260
1340099565,12cyclictest17563-21fschecks_time10:40:160
1340099565,11cyclictest3924-21cpuspeed_turbos09:05:160
1340099564,9cyclictest1285-21snmpd10:20:010
1340099564,10cyclictest18610-21df_abs11:50:210
1340099563,17cyclictest0-21swapper/012:35:280
1340099562,19cyclictest0-21swapper/010:45:290
13400995612,9cyclictest32281-21grep11:10:210
59298550,2rtkit-daemon591-21rtkit-daemon12:15:461
1340099556,9cyclictest28860-21date11:05:010
1340099555,11cyclictest11357-21expr11:35:180
136991540,1ptp4l401ktimersoftd/308:06:483
1340099548,10cyclictest1605-21sed10:05:260
1340099544,16cyclictest0-21swapper/007:45:170
1340099543,18cyclictest0-21swapper/012:15:290
1340099543,10cyclictest0-21swapper/010:40:000
1340099542,10cyclictest0-21swapper/009:15:000
245562530,2sleep20-21swapper/209:45:272
1340099535,12cyclictest15324-21sed08:20:200
1340099535,11cyclictest14633-21latency_hist10:35:000
136991520,1ptp4l401ktimersoftd/307:16:463
1340099526,16cyclictest25233-21sed09:50:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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