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2026-04-01 - 11:08
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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 Wed Apr 01, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1566299260,15cyclictest0-21swapper/123:35:131
1566299232,1cyclictest0-21swapper/119:20:491
15662992315,7cyclictest28504-21python320:30:001
15662992314,1cyclictest0-21swapper/122:25:181
1566299230,21cyclictest0-21swapper/123:48:551
1566699220,18cyclictest0-21swapper/220:42:282
1566299222,1cyclictest0-21swapper/122:17:491
1566299222,19cyclictest0-21swapper/121:13:421
15662992214,2cyclictest8486-21cat21:45:141
15662992214,2cyclictest14909-21ntp_states21:55:201
15662992214,1cyclictest0-21swapper/119:40:011
15662992214,1cyclictest0-21swapper/100:35:001
15662992213,1cyclictest19711-21smartctl22:05:161
1566299220,1cyclictest0-21swapper/100:17:571
1566299220,15cyclictest0-21swapper/122:52:571
1566299220,15cyclictest0-21swapper/121:35:011
1566299220,15cyclictest0-21swapper/119:30:181
1566699213,17cyclictest0-21swapper/219:20:022
1566299212,15cyclictest72342sleep100:39:371
15662992114,2cyclictest9301-21munin-run19:55:011
15662992114,1cyclictest20481-21munin-run20:15:011
15662992114,1cyclictest0-21swapper/123:25:141
15662992114,1cyclictest0-21swapper/123:10:131
15662992114,1cyclictest0-21swapper/123:10:131
15662992114,1cyclictest0-21swapper/121:40:121
15662992114,1cyclictest0-21swapper/121:25:151
15662992114,1cyclictest0-21swapper/120:40:131
15662992113,2cyclictest15142-21awk23:50:161
1566299210,2cyclictest9889-21expr19:55:161
1566299210,2cyclictest29165-21expr00:20:131
1566299210,2cyclictest15922-21/usr/sbin/munin20:05:181
1566299210,1cyclictest0-21swapper/120:35:211
1566299210,16cyclictest26760-21fschecks_count23:15:131
1566299210,16cyclictest1516-21lxd20:58:501
1566299210,15cyclictest29834-21df20:30:141
1566299210,15cyclictest26294-21expr21:20:141
1566299210,15cyclictest18127-21pzem_current23:55:201
1566299210,15cyclictest0-21swapper/122:20:151
1566299210,15cyclictest0-21swapper/100:10:141
15662992014,1cyclictest0-21swapper/123:20:061
15662992014,1cyclictest0-21swapper/122:10:151
15662992013,2cyclictest20739-21cpuspeed_turbos20:15:131
15662992013,2cyclictest16749-21snapd22:45:101
15662992013,2cyclictest16749-21snapd22:45:101
15662992013,1cyclictest2067-21grep22:30:161
1566299200,2cyclictest2694-21fschecks_count23:30:131
1566299200,1cyclictest9411-21fschecks_time20:50:141
1566299200,1cyclictest0-21swapper/122:55:171
1566299200,1cyclictest0-21swapper/121:08:591
1566299200,1cyclictest0-21swapper/120:45:131
1566299200,1cyclictest0-21swapper/120:20:141
1566299200,1cyclictest0-21swapper/119:45:141
1566299200,1cyclictest0-21swapper/119:20:011
1566299200,16cyclictest2271-21expr21:35:131
1566299200,16cyclictest20173-21latency_hist23:05:001
1566299200,15cyclictest25136-21munin-run21:20:001
1566299200,15cyclictest0-21swapper/121:00:181
1566099206,12cyclictest0-21swapper/020:49:300
15660992014,3cyclictest0-21swapper/022:59:370
1566699192,3cyclictest0-21swapper/220:30:012
1566699190,3cyclictest0-21swapper/223:25:182
1566699190,16cyclictest29832-21cat19:35:012
15662991914,1cyclictest483-21/usr/sbin/munin19:40:201
15662991913,2cyclictest16346-21/usr/sbin/munin19:10:231
15662991913,1cyclictest0-21swapper/123:05:141
15662991913,1cyclictest0-21swapper/100:10:011
1566299191,15cyclictest3942-21java20:01:011
1566299190,1cyclictest0-21swapper/122:40:161
1566299190,1cyclictest0-21swapper/100:25:181
1566099192,1cyclictest61002sleep019:46:150
1566099192,16cyclictest3060-21kernelversion23:30:150
1566099192,16cyclictest12409-21grep20:00:130
15660991917,1cyclictest0-21swapper/021:04:360
15660991915,1cyclictest0-21swapper/021:39:520
1566699183,9cyclictest25081-21latency_hist21:20:002
1566699182,1cyclictest0-21swapper/219:41:542
15666991815,2cyclictest28995-21cpuspeed_turbos23:20:142
15666991814,3cyclictest24720-21awk20:20:182
15666991814,3cyclictest2007-21systemd-journal23:45:262
1566699181,2cyclictest6748-21switchtime23:35:212
1566699180,17cyclictest28980-21nfsd422:20:182
1566099182,15cyclictest0-21swapper/021:42:240
15660991814,3cyclictest0-21swapper/020:50:140
15660991814,3cyclictest0-21swapper/000:00:480
1566099181,2cyclictest17504-21missed_timers19:10:180
15666991715,1cyclictest5866-21kernelversion21:40:152
15666991715,1cyclictest0-21swapper/220:05:222
15666991714,2cyclictest5810-21sed19:45:202
15666991714,2cyclictest31124-21fschecks_count22:25:152
15666991714,2cyclictest2510-21cat23:30:132
15666991714,2cyclictest22938-21tune2fs22:10:152
15666991714,2cyclictest15408-21head21:00:212
15666991714,2cyclictest13761-21processes20:00:192
15666991714,2cyclictest13325-21timerwakeupswit20:55:222
15666991714,2cyclictest12936-21fschecks_count22:50:142
15666991714,2cyclictest10489-21sed21:50:002
1566699171,1cyclictest0-21swapper/222:30:092
1566699171,15cyclictest25075-21egrep22:15:112
1566699171,15cyclictest0-21swapper/222:00:012
1566699170,2cyclictest5492-21fschecks_time00:35:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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