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2026-04-01 - 07:52
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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 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
1566699170,2cyclictest31252-21/usr/sbin/munin21:30:212
1566699170,2cyclictest30866-21/usr/sbin/munin19:35:172
1566699170,2cyclictest27331-21grep23:15:162
1566699170,2cyclictest23406-21cat00:10:092
1566699170,2cyclictest1517-21lxd21:24:502
1566699170,16cyclictest9814-21grep22:45:132
1566699170,16cyclictest9814-21grep22:45:132
1566699170,16cyclictest9507-21cat22:45:012
1566699170,16cyclictest924-21nfsd420:35:172
1566699170,16cyclictest7731-21kernelversion19:50:172
1566699170,16cyclictest4853-21mii-tool22:35:162
1566699170,16cyclictest26138-21expr00:15:142
1566699170,16cyclictest24568-21/usr/sbin/munin19:25:222
1566699170,16cyclictest2384-21fschecks_count00:30:142
1566699170,16cyclictest23029-21latency_hist23:10:002
1566699170,16cyclictest20415-21smartctl22:05:202
1566699170,16cyclictest18500-21pzem_current21:05:182
1566699170,16cyclictest17981-21expr23:00:142
1566699170,16cyclictest17659-21cut19:10:192
1566699170,16cyclictest1672-21/usr/sbin/munin21:35:142
1566699170,16cyclictest15420-21cstates22:55:152
1566699170,16cyclictest1375-21munin-node20:50:102
1566699170,16cyclictest1351-21lxd20:48:502
1566699170,16cyclictest11987-21netstat21:50:182
1566699170,16cyclictest10302-21cron23:45:002
15662991715,1cyclictest26218-21switchtime19:25:221
15662991714,2cyclictest19965-21fschecks_count00:00:141
15660991716,1cyclictest9-21ksoftirqd/022:44:140
15660991715,1cyclictest0-21swapper/021:20:180
15660991715,1cyclictest0-21swapper/020:32:240
15660991714,2cyclictest9451-21ntp_states21:45:190
15660991714,2cyclictest399-20systemd-journal23:50:010
15660991714,2cyclictest23947-21nfsd421:15:180
15660991714,2cyclictest20136-21perf23:05:000
15660991714,2cyclictest1515-21lxd21:56:500
15660991714,2cyclictest11049-21grep22:45:190
15660991714,2cyclictest11049-21grep22:45:190
15660991713,1cyclictest0-21swapper/022:25:220
1566099171,15cyclictest12418-21cpuspeed_turbos22:50:130
15660991711,4cyclictest20712-21cpuspeed_turbos23:05:130
1566099170,2cyclictest27142-21munin-run19:30:010
1566099170,2cyclictest24937-21pzem_power20:20:200
1566099170,2cyclictest2027-21ntp_offset19:40:180
1566099170,2cyclictest15663-21fschecks_count20:05:160
1566099170,2cyclictest12327-21pzem_voltage21:50:200
1566099170,2cyclictest11860-21munin-run20:00:010
1566099170,16cyclictest977-21cat23:25:210
1566099170,16cyclictest4948-21grep00:35:130
1566099170,16cyclictest26996-21if_err_enp1s023:15:150
1566099170,16cyclictest26236-21expr00:15:150
1566099170,16cyclictest2069-21systemd-udevd21:12:520
1566099170,16cyclictest19270-21ls22:05:140
1566099170,16cyclictest18118-21cpuspeed_turbos20:10:130
1566099170,16cyclictest16749-21snapd20:38:100
1566099170,16cyclictest10151-21lxd20:26:500
1566099170,16cyclictest0-21swapper/023:22:430
1566099170,15cyclictest2427-21fschecks_time00:30:140
15666991614,1cyclictest31602-21cstates00:25:152
15666991614,1cyclictest0-21swapper/222:00:132
15666991614,1cyclictest0-21swapper/200:00:152
15666991613,2cyclictest19942-21grep21:10:142
1566699160,1cyclictest29599-21missed_timers21:25:172
1566699160,1cyclictest20739-21cpuspeed_turbos20:15:132
1566699160,1cyclictest0-21swapper/220:10:132
1566699160,15cyclictest9521-21/usr/sbin/munin19:55:142
1566699160,15cyclictest3450-21gsd-color23:50:252
1566699160,15cyclictest0-21swapper/223:55:132
1566699160,15cyclictest0-21swapper/220:30:132
1566699160,15cyclictest0-21swapper/219:15:162
1566699160,15cyclictest0-21swapper/200:20:142
15662991614,1cyclictest0-21swapper/123:40:161
15662991614,1cyclictest0-21swapper/121:50:121
1566299160,2cyclictest5355-21ntp_states22:35:181
15660991614,1cyclictest3062-21postgres22:31:500
15660991614,1cyclictest0-21swapper/023:35:170
15660991614,1cyclictest0-21swapper/023:10:180
15660991614,1cyclictest0-21swapper/023:10:180
15660991614,1cyclictest0-21swapper/022:15:140
15660991614,1cyclictest0-21swapper/021:25:120
15660991614,1cyclictest0-21swapper/000:10:140
15660991613,2cyclictest24561-21chrt22:14:400
15660991613,2cyclictest18261-21switchtime23:55:210
1566099160,2cyclictest8356-21expr23:40:150
1566099160,2cyclictest30223-21expr19:35:140
1566099160,2cyclictest23090-21nfsd419:20:200
1566099160,2cyclictest17264-21expr21:05:120
1566099160,1cyclictest3414-21master00:20:100
1566099160,1cyclictest2850-21gmain19:33:570
1566099160,1cyclictest0-21swapper/019:50:110
1566099160,15cyclictest4768-21if_enp1s022:35:150
1566099160,15cyclictest2600-21apt-get20:40:110
1566099160,15cyclictest14279-21expr23:50:120
1566099160,15cyclictest12723-21nfsd420:55:180
1566099160,15cyclictest0-21swapper/021:30:130
1566099160,15cyclictest0-21swapper/020:15:150
1566099160,15cyclictest0-21swapper/019:15:210
1566099160,15cyclictest0-21swapper/000:25:140
15666991513,1cyclictest23487-21cpuspeed_turbos23:10:132
15666991513,1cyclictest23487-21cpuspeed_turbos23:10:132
15666991513,1cyclictest0-21swapper/200:05:592
15662991513,1cyclictest0-21swapper/122:00:141
15660991513,1cyclictest0-21swapper/022:00:130
15660991513,1cyclictest0-21swapper/000:06:090
1566099150,14cyclictest0-21swapper/022:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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