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2026-04-02 - 09:17
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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 Thu Apr 02, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1617999254,20cyclictest0-21swapper/221:46:382
1617999254,20cyclictest0-21swapper/221:46:372
1617599253,16cyclictest20545-21kernelversion19:15:161
1617999240,1cyclictest22021-21kernelversion22:10:172
1617999240,1cyclictest22021-21kernelversion22:10:172
1617599240,19cyclictest0-21swapper/122:25:211
1617999233,1cyclictest0-21swapper/223:24:562
1617999230,5cyclictest0-21swapper/222:19:522
1617999230,5cyclictest0-21swapper/220:34:222
1617599236,16cyclictest0-21swapper/119:10:211
16179992214,7cyclictest2534-21chrt00:29:002
16179992214,6cyclictest843-21systemd-network20:27:522
1617999221,16cyclictest5242-21timerwakeupswit20:40:202
1617999220,3cyclictest0-21swapper/222:58:462
1617999220,2cyclictest8009-21sed22:40:222
1617999220,2cyclictest1085-21gdbus19:15:192
1617999220,2cyclictest10775-21chrt22:45:272
1617999220,1cyclictest0-21swapper/219:20:132
1617999220,16cyclictest7523-21grep20:45:182
1617999220,16cyclictest2996-21cat20:40:012
16179992114,6cyclictest20479-21chrt20:11:432
16179992114,6cyclictest18123-21date22:05:002
1617999211,19cyclictest0-21swapper/220:05:012
1617999210,2cyclictest17223-21cpuspeed_turbos21:05:132
1617999210,20cyclictest0-21swapper/221:34:122
1617999210,20cyclictest0-21swapper/221:10:152
1617999210,1cyclictest31606-21timerandwakeup00:20:202
1617999210,1cyclictest0-21swapper/221:37:482
1617999210,1cyclictest0-21swapper/200:00:132
1617999210,16cyclictest32310-21proc_pri23:25:192
1617999210,16cyclictest29449-21munin-run00:20:002
1617999210,15cyclictest29299-21cat21:25:182
1617999210,15cyclictest26725-21perf00:15:002
1617999210,15cyclictest23299-21grep23:10:142
1617999210,15cyclictest0-21swapper/219:55:182
1617999210,14cyclictest0-21swapper/221:15:192
1617599210,20cyclictest843-21systemd-network22:45:001
16179992014,5cyclictest14117-21cut21:00:012
16179992014,5cyclictest0-21swapper/223:30:212
16179992014,5cyclictest0-21swapper/223:30:202
16179992014,5cyclictest0-21swapper/222:30:202
16179992014,5cyclictest0-21swapper/219:40:202
16179992013,6cyclictest9555-21perf23:45:012
16179992013,6cyclictest372-21timerwakeupswit19:35:192
1617999201,17cyclictest0-21swapper/219:50:182
1617999200,2cyclictest13559-21mii-tool21:55:162
1617999200,2cyclictest12156-21/usr/sbin/munin22:50:132
1617999200,1cyclictest14333-21apache_processe21:00:112
1617999200,1cyclictest0-21swapper/223:15:222
1617999200,1cyclictest0-21swapper/221:20:132
1617999200,1cyclictest0-21swapper/200:30:092
1617999200,19cyclictest6273-21vmstat23:35:232
1617999200,19cyclictest19124-21taskset23:02:092
1617999200,19cyclictest12274-21apt-get23:50:102
1617999200,19cyclictest0-21swapper/221:50:142
1617999200,19cyclictest0-21swapper/220:50:182
1617999200,19cyclictest0-21swapper/219:45:182
1617999200,18cyclictest0-21swapper/223:45:122
1617999200,15cyclictest0-21swapper/223:05:142
1617999200,14cyclictest0-21swapper/219:25:162
16175992019,1cyclictest8500-21strings19:50:201
1617099204,15cyclictest7170-21date19:50:010
1617099202,3cyclictest0-21swapper/021:19:370
1617099200,20cyclictest0-21swapper/019:50:200
16179991913,5cyclictest0-21swapper/223:55:192
16179991913,5cyclictest0-21swapper/220:20:142
16179991913,5cyclictest0-21swapper/219:10:152
1617999190,3cyclictest0-21swapper/220:19:482
1617999190,1cyclictest0-21swapper/220:10:002
1617999190,18cyclictest0-21swapper/200:37:582
1617999190,18cyclictest0-21swapper/200:05:192
1617999190,14cyclictest0-21swapper/222:35:132
1617999190,14cyclictest0-21swapper/222:35:122
16175991917,1cyclictest24316-21sensors21:15:231
16175991916,2cyclictest22637-21cut21:15:011
16175991915,3cyclictest0-21swapper/122:33:301
1617599190,1cyclictest0-21swapper/122:46:591
1617099192,1cyclictest0-21swapper/022:07:020
16170991917,1cyclictest0-21swapper/020:06:320
16170991916,2cyclictest13231-21cpuspeed_turbos23:50:130
1617099190,18cyclictest0-21swapper/020:20:180
16179991814,3cyclictest0-21swapper/221:40:122
16179991813,4cyclictest0-21swapper/222:20:192
1617999181,16cyclictest30528-21nfsd422:25:182
1617999180,1cyclictest0-21swapper/219:30:172
1617999180,14cyclictest0-21swapper/222:05:172
1617599182,15cyclictest0-21swapper/123:15:191
16175991816,1cyclictest0-21swapper/121:20:161
16175991816,1cyclictest0-21swapper/120:10:151
16175991815,2cyclictest25110-21http_loadtime00:10:121
16175991814,3cyclictest0-21swapper/119:44:141
1617599181,2cyclictest23945-21grep22:15:151
1617099182,15cyclictest8154-21chrt22:41:490
16170991816,1cyclictest17694-21grep21:05:150
16170991816,1cyclictest0-21swapper/022:12:550
16170991816,1cyclictest0-21swapper/022:12:540
16170991815,2cyclictest15003-21chrt20:03:470
1617099181,16cyclictest6855-21http_loadtime20:45:140
1617099180,1cyclictest0-21swapper/021:03:280
1617099180,17cyclictest4194-21grep22:35:190
1617099180,17cyclictest4194-21grep22:35:190
1617099180,17cyclictest0-21swapper/020:11:530
1617099180,16cyclictest4826-21cstates21:40:140
1617599179,7cyclictest27919-21nfsd420:25:181
16175991715,1cyclictest3248-21cpuspeed_turbos00:30:131
16175991715,1cyclictest0-21swapper/121:00:121
16175991715,1cyclictest0-21swapper/120:20:011
16175991714,2cyclictest993-21dbus-daemon00:00:201
16175991714,2cyclictest8543-21munin-plugin-st20:50:001
16175991714,2cyclictest6137-21grep00:35:131
16175991714,2cyclictest29808-21ls21:25:211
16175991714,2cyclictest2695-21ntp_states23:30:191
16175991714,2cyclictest2695-21ntp_states23:30:191
16175991714,2cyclictest21556-21sed23:05:211
16175991714,2cyclictest17482-21expr21:05:131
16175991714,2cyclictest15689-21tr22:00:131
16175991714,2cyclictest15628-21cpuspeed_turbos20:05:141
16175991714,2cyclictest14100-21cut23:50:171
16175991714,2cyclictest13772-21chrt20:58:351
16175991714,2cyclictest13414-21fschecks_count20:00:151
16175991714,2cyclictest10887-21cat19:55:161
1617599170,2cyclictest25454-21pzem_voltage20:20:211
1617599170,2cyclictest23495-21which19:20:131
1617599170,2cyclictest22079-21sed22:10:171
1617599170,2cyclictest22079-21sed22:10:171
1617599170,16cyclictest9279-21cstates20:50:131
1617599170,16cyclictest9211-21smtpd23:40:541
1617599170,16cyclictest6098-21pzem_voltage21:40:191
1617599170,16cyclictest4193-21smartctl22:35:191
1617599170,16cyclictest4193-21smartctl22:35:181
1617599170,16cyclictest30302-21cat00:20:121
1617599170,16cyclictest29704-21expr20:30:131
1617599170,16cyclictest27281-21cut00:15:141
1617599170,16cyclictest26563-21date22:20:001
1617599170,16cyclictest2630-21munin-run00:30:001
1617599170,16cyclictest20480-21sed22:08:581
1617599170,16cyclictest17127-21nfsd423:55:171
1617599170,16cyclictest16755-21snapd23:10:181
1617599170,16cyclictest1447-21cat19:40:011
1617599170,16cyclictest14297-21wc22:55:141
1617599170,16cyclictest10104-21cut23:45:121
16170991715,1cyclictest0-21swapper/000:21:100
16170991715,1cyclictest0-21swapper/000:01:300
16170991714,2cyclictest2942-21munin-plugin-st00:30:010
16170991714,2cyclictest22691-21gpgv19:20:030
16170991714,2cyclictest18245-21perf00:00:000
16170991714,2cyclictest16830-21snapd20:25:190
16170991714,2cyclictest15465-21find22:00:110
16170991714,1cyclictest0-21swapper/021:50:170
16170991713,3cyclictest24890-21memory22:15:180
1617099171,15cyclictest81012chrt00:36:260
1617099171,15cyclictest26653-21nfsd421:20:180
1617099171,15cyclictest0-21swapper/023:15:130
1617099170,2cyclictest993-21dbus-daemon22:25:190
1617099170,2cyclictest9001-21cut22:45:130
1617099170,2cyclictest399-20systemd-journal23:44:550
1617099170,2cyclictest3989-21H222:10:210
1617099170,2cyclictest3414-21master21:35:250
1617099170,2cyclictest16771-21cat19:10:140
1617099170,2cyclictest15368-21/usr/sbin/munin22:55:180
1617099170,2cyclictest1526-21lxd23:02:490
1617099170,2cyclictest15089-21grep22:00:000
1617099170,2cyclictest12200-21bounce19:58:010
1617099170,2cyclictest11628-21cpu20:55:140
1617099170,2cyclictest10494-21expr23:45:130
1617099170,16cyclictest863-21avahi-daemon21:30:220
1617099170,16cyclictest3351-21lxd00:08:340
1617099170,16cyclictest31888-21sed23:25:160
1617099170,16cyclictest2587-21awk23:30:180
1617099170,16cyclictest2587-21awk23:30:170
1617099170,16cyclictest23800-21cut20:20:000
1617099170,16cyclictest22015-21http19:20:010
1617099170,16cyclictest1377-21lxd19:42:490
1617099170,16cyclictest0-21swapper/000:30:140
1617099170,16cyclictest0-21swapper/000:13:180
1617099170,15cyclictest0-21swapper/021:48:120
1617099170,15cyclictest0-21swapper/021:48:110
16175991614,1cyclictest30947-21cpuspeed_turbos23:25:111
16175991614,1cyclictest0-21swapper/121:38:591
16175991614,1cyclictest0-21swapper/120:35:221
16175991614,1cyclictest0-21swapper/119:25:141
16175991613,2cyclictest11533-21/usr/sbin/munin22:50:111
1617599160,1cyclictest0-21swapper/123:35:121
1617599160,1cyclictest0-21swapper/121:30:121
1617599160,1cyclictest0-21swapper/119:45:181
1617599160,15cyclictest28844-21smartctl23:20:151
1617599160,15cyclictest28513-21expr19:30:131
1617599160,15cyclictest0-21swapper/123:00:131
1617599160,15cyclictest0-21swapper/121:55:161
1617599160,15cyclictest0-21swapper/121:45:171
1617599160,15cyclictest0-21swapper/121:45:171
1617599160,15cyclictest0-21swapper/120:40:141
16170991614,1cyclictest27104-21taskset00:15:030
16170991614,1cyclictest0-21swapper/023:20:160
16170991614,1cyclictest0-21swapper/023:10:020
16170991614,1cyclictest0-21swapper/020:50:120
16170991614,1cyclictest0-21swapper/020:40:130
16170991614,1cyclictest0-21swapper/020:30:150
16170991614,1cyclictest0-21swapper/019:30:140
16170991613,2cyclictest12137-21df22:50:140
1617099160,1cyclictest25685-21expr19:25:120
1617099160,1cyclictest19974-21apt-get21:10:120
1617099160,15cyclictest4690-21expr23:35:140
1617099160,15cyclictest28324-21expr21:25:130
1617099160,15cyclictest19813-21cpu23:05:140
1617099160,15cyclictest1830-21switchtime20:35:210
1617099160,15cyclictest0-21swapper/022:30:150
1617099160,15cyclictest0-21swapper/022:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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