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2026-04-14 - 07:33
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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 Tue Apr 14, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24306992617,0cyclictest0-21swapper/219:55:162
24306992525,0cyclictest0-21swapper/220:35:172
24306992414,5cyclictest0-21swapper/221:01:432
24306992414,5cyclictest0-21swapper/221:01:432
24305992315,7cyclictest0-21swapper/100:30:181
24305992314,1cyclictest0-21swapper/119:35:171
2430599230,2cyclictest11094-21perf00:29:591
2430599230,16cyclictest30528-21awk21:15:121
2430699220,5cyclictest0-21swapper/221:27:052
24305992214,2cyclictest4067-21awk22:20:161
24305992214,2cyclictest4067-21awk22:20:161
24305992214,1cyclictest97832chrt20:35:351
24305992214,1cyclictest0-21swapper/122:15:581
24305992214,1cyclictest0-21swapper/121:20:201
24305992214,1cyclictest0-21swapper/100:35:191
24305992213,8cyclictest0-21swapper/119:22:501
2430599220,2cyclictest9251-21taskset23:28:011
2430599220,2cyclictest7157-21expr21:30:151
2430599220,2cyclictest16951-21expr22:45:141
2430599220,1cyclictest5396-21ls19:30:241
2430599220,1cyclictest0-21swapper/121:53:471
2430599220,1cyclictest0-21swapper/120:50:161
2430599220,16cyclictest991-21expr19:25:141
2430599220,16cyclictest25946-21cat20:10:001
2430599220,16cyclictest2415-21postgres20:25:131
2430599220,16cyclictest11143-21expr20:40:131
2430599220,15cyclictest24029-21ls22:00:151
2430599220,15cyclictest21709-21http_loadtime21:55:151
2430599220,15cyclictest11928-21irqstats22:35:181
2430599220,15cyclictest0-21swapper/123:55:131
2430599220,15cyclictest0-21swapper/122:50:141
2430599220,15cyclictest0-21swapper/121:05:161
2430599220,15cyclictest0-21swapper/119:55:131
24303992221,1cyclictest9-21ksoftirqd/021:00:180
24303992221,1cyclictest9-21ksoftirqd/021:00:170
2430399220,21cyclictest9-21ksoftirqd/019:54:060
2430699210,20cyclictest843-21systemd-network19:22:452
24305992115,1cyclictest0-21swapper/120:30:201
24305992114,2cyclictest31294-21date20:20:011
24305992114,2cyclictest19835-21awk23:45:201
24305992114,1cyclictest0-21swapper/123:20:161
24305992114,1cyclictest0-21swapper/100:20:011
24305992113,2cyclictest32093-21chrt00:09:511
2430599210,2cyclictest30877-21expr23:10:141
2430599210,2cyclictest21862-21expr23:50:141
2430599210,1cyclictest0-21swapper/123:05:211
2430599210,1cyclictest0-21swapper/121:10:161
2430599210,1cyclictest0-21swapper/120:25:011
2430599210,1cyclictest0-21swapper/120:10:121
2430599210,1cyclictest0-21swapper/119:45:221
2430599210,1cyclictest0-21swapper/100:20:101
2430599210,16cyclictest28937-21turbostat22:10:001
2430599210,16cyclictest26870-21sendmail-mta19:14:351
2430599210,16cyclictest1162-21expr23:15:151
2430599210,15cyclictest16331-21cat23:40:141
2430599210,15cyclictest14497-21expr22:40:131
2430599210,15cyclictest0-21swapper/122:25:211
2430599210,15cyclictest0-21swapper/121:25:221
2430599210,15cyclictest0-21swapper/120:45:141
2430599210,15cyclictest0-21swapper/120:05:011
2430599210,15cyclictest0-21swapper/119:40:151
2430599210,14cyclictest0-21swapper/123:30:181
2430599210,14cyclictest0-21swapper/122:30:171
24306992015,4cyclictest5710-21grep20:30:172
24306992014,5cyclictest0-21swapper/221:20:142
2430699201,18cyclictest12132-21grep23:35:002
24305992014,1cyclictest0-21swapper/123:35:161
24305992014,1cyclictest0-21swapper/123:35:151
24305992014,1cyclictest0-21swapper/100:12:061
24305992013,1cyclictest0-21swapper/119:20:011
24305992013,1cyclictest0-21swapper/119:20:001
2430599200,1cyclictest0-21swapper/121:45:171
2430599200,1cyclictest0-21swapper/121:35:131
2430599200,15cyclictest28859-21chrt00:01:501
2430599200,15cyclictest0-21swapper/120:55:191
2430699192,2cyclictest31312-21cat23:10:162
2430699192,16cyclictest24689-21cat19:10:142
24306991917,1cyclictest26974-21mii-tool20:10:152
24306991915,3cyclictest0-21swapper/223:40:012
24306991914,1cyclictest0-21swapper/220:40:132
2430699191,17cyclictest7368-21nfsd400:20:172
2430699190,18cyclictest0-21swapper/223:05:012
2430699190,17cyclictest13782-21proc_pri19:45:202
24305991913,1cyclictest22094-21/usr/sbin/munin22:55:141
24305991913,1cyclictest0-21swapper/121:45:021
2430599190,1cyclictest0-21swapper/119:53:181
2430399192,1cyclictest9-21ksoftirqd/000:30:010
24303991919,0cyclictest0-21swapper/019:59:400
24303991915,3cyclictest15507-21apt-config23:40:010
24303991915,3cyclictest15507-21apt-config23:40:010
24303991913,5cyclictest0-21swapper/022:50:160
2430699182,1cyclictest297832sleep223:08:412
24306991816,1cyclictest7101-21pzem_power22:25:192
24306991816,1cyclictest19824-21nfsd423:45:192
24306991816,1cyclictest0-21swapper/221:47:312
24306991816,1cyclictest0-21swapper/219:54:232
24306991816,1cyclictest0-21swapper/200:30:002
24306991815,2cyclictest5431-21cat22:25:012
24306991815,2cyclictest5431-21cat22:25:002
24306991815,2cyclictest28482-21chrt19:15:182
24306991815,2cyclictest28482-21chrt19:15:182
24306991815,2cyclictest10347-21basename19:40:162
24306991814,3cyclictest0-21swapper/200:40:012
24306991813,4cyclictest23288-21latency_hist22:00:012
24306991813,4cyclictest14553-21cut22:40:142
2430699181,1cyclictest0-21swapper/219:25:182
2430699181,16cyclictest16962-21cstates22:45:132
2430699180,3cyclictest3359-21perf23:20:002
2430699180,3cyclictest12234-21munin-run21:40:012
2430699180,17cyclictest6695-21cut23:25:012
2430699180,17cyclictest0-21swapper/219:40:012
24305991815,0cyclictest0-21swapper/121:04:271
24305991815,0cyclictest0-21swapper/121:04:261
24303991815,2cyclictest25755-21perf20:10:010
24303991815,2cyclictest23816-21cpuspeed_turbos22:00:150
24303991815,2cyclictest13531-21nfsd419:45:190
24303991813,3cyclictest9-21ksoftirqd/021:56:500
2430399180,16cyclictest12057-21python321:40:000
24306991715,1cyclictest25681-21idleruntime21:05:152
24306991714,2cyclictest8280-21basename22:30:112
24306991714,2cyclictest455-21plymouthd22:05:132
24306991714,2cyclictest3449-21expr00:15:142
24306991714,2cyclictest32374-21cstates22:15:142
24306991714,2cyclictest29683-21if_enp1s020:15:172
24306991714,2cyclictest29448-21wc21:10:202
24306991714,2cyclictest27512-21which00:00:152
24306991714,2cyclictest20803-21ls20:00:142
24306991714,2cyclictest19391-21apache_accesses22:50:112
24306991714,2cyclictest14437-21/usr/sbin/munin20:45:192
24306991714,2cyclictest11466-21/usr/sbin/munin00:30:152
24306991713,1cyclictest0-21swapper/220:55:132
2430699170,2cyclictest8831-21awk23:25:212
2430699170,2cyclictest7330-21cstates21:30:162
2430699170,2cyclictest682-21df00:10:132
2430699170,2cyclictest29804-21cstates22:10:152
2430699170,2cyclictest24372-21cstates23:55:132
2430699170,2cyclictest12551-21apache_accesses23:35:122
2430699170,2cyclictest12551-21apache_accesses23:35:112
2430699170,16cyclictest3748-21cstates19:30:142
2430699170,16cyclictest31842-21cpuspeed_turbos20:20:142
2430699170,16cyclictest30658-21tr21:15:152
2430699170,16cyclictest29879-21expr00:05:132
2430699170,16cyclictest2579-21cstates20:25:152
2430699170,16cyclictest23727-21cat20:05:132
2430699170,16cyclictest22457-21cstates22:55:132
2430699170,16cyclictest21584-21cstates23:50:142
2430699170,16cyclictest19041-21if_eno121:50:162
2430699170,16cyclictest17174-21latency20:50:182
2430699170,16cyclictest12646-21apt-config21:40:012
2430699170,16cyclictest12329-21expr22:35:202
2430399172,1cyclictest9-21ksoftirqd/022:30:180
2430399172,15cyclictest9-21ksoftirqd/020:10:130
24303991717,0cyclictest0-21swapper/021:31:240
24303991715,1cyclictest9-21ksoftirqd/020:50:140
24303991715,1cyclictest9-21ksoftirqd/020:30:180
24303991715,1cyclictest207082chrt23:47:240
24303991715,1cyclictest101rcuc/021:05:500
24303991715,1cyclictest0-21swapper/023:42:580
24303991715,1cyclictest0-21swapper/021:47:480
24303991715,1cyclictest0-21swapper/019:30:200
24303991715,1cyclictest0-21swapper/000:20:150
24303991714,2cyclictest3450-21gsd-color21:25:150
24303991714,2cyclictest31745-21nfsd421:15:190
24303991714,2cyclictest16748-21snapd20:23:100
24303991714,2cyclictest14012-21grep21:40:180
24303991714,1cyclictest0-21swapper/022:25:200
2430399171,15cyclictest9-21ksoftirqd/023:25:170
2430399171,15cyclictest9-21ksoftirqd/000:03:490
2430399171,15cyclictest19408-40dpkg20:55:050
2430399170,16cyclictest26661-21expr22:05:130
2430399170,16cyclictest26082-21cut23:00:180
2430399170,16cyclictest22485-21expr22:55:120
2430399170,16cyclictest20515-21/usr/sbin/munin20:00:170
2430399170,16cyclictest19199-21/usr/sbin/munin21:50:160
2430399170,16cyclictest1807-21grep00:10:210
2430399170,16cyclictest17725-21ls22:45:180
2430399170,16cyclictest1517-21lxd22:42:500
2430399170,16cyclictest14216-21apache_accesses00:35:110
2430399170,16cyclictest12746-21cut00:30:180
2430399170,16cyclictest0-21swapper/019:10:220
24306991614,1cyclictest0-21swapper/222:00:012
2430599160,15cyclictest31167-21timerwakeupswit22:10:221
2430599160,15cyclictest25126-21cat23:00:141
24303991614,1cyclictest9-21ksoftirqd/020:35:150
24303991614,1cyclictest6927-21expr19:35:150
24303991614,1cyclictest29319-21/usr/sbin/munin22:10:140
24303991614,1cyclictest0-21swapper/023:52:480
24303991614,1cyclictest0-21swapper/023:20:140
24303991614,1cyclictest0-21swapper/023:15:170
24303991614,1cyclictest0-21swapper/023:10:140
24303991614,1cyclictest0-21swapper/023:05:140
24303991614,1cyclictest0-21swapper/022:35:160
24303991614,1cyclictest0-21swapper/022:20:170
24303991614,1cyclictest0-21swapper/022:20:160
24303991614,1cyclictest0-21swapper/021:20:130
24303991614,1cyclictest0-21swapper/019:20:120
24303991613,2cyclictest11936-21nfsd420:40:180
2430399161,15cyclictest9-21ksoftirqd/020:15:140
2430399160,2cyclictest28232-21cat19:15:180
2430399160,2cyclictest28232-21cat19:15:170
2430399160,15cyclictest9-21ksoftirqd/022:15:230
2430399160,15cyclictest9-21ksoftirqd/021:10:130
2430399160,15cyclictest3119-21cpu00:15:130
2430399160,15cyclictest30993-21ps00:05:200
2430399160,15cyclictest24388-21expr23:55:120
2430399160,15cyclictest0-21swapper/020:25:130
2430399160,15cyclictest0-21swapper/019:25:170
2430399150,1cyclictest0-21swapper/020:45:280
2430399150,1cyclictest0-21swapper/019:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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