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2026-04-11 - 06:48
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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 Sat Apr 11, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2998099310,1cyclictest0-21swapper/123:35:121
29980992826,1cyclictest0-21swapper/119:45:211
2998199260,21cyclictest27921-21chrt20:02:302
2998199240,23cyclictest19430-21cron00:35:002
2998199230,22cyclictest8812-21perf21:25:012
2998199230,22cyclictest2781-21cut22:10:152
2998199230,22cyclictest22239-21sed19:50:212
2998199230,22cyclictest20824-21expr21:45:142
2998199230,22cyclictest16518-21cat00:30:012
2998199230,22cyclictest15234-21sed22:30:222
2998199230,22cyclictest13357-21date20:35:002
29980992320,2cyclictest22455-21munin-plugin-st00:40:001
29980992314,3cyclictest22736-21cron23:45:011
2998199223,18cyclictest0-21swapper/200:02:362
2998199222,5cyclictest7996-21chrt00:13:542
29981992216,5cyclictest1424-21grep23:05:172
2998199221,20cyclictest3991-21H222:10:212
2998199220,7cyclictest18687-21apt22:40:002
2998199220,7cyclictest16432-21plymouth19:40:202
2998199220,2cyclictest32293-21if_err_lxdbr020:10:162
2998199220,2cyclictest10143-21kernelversion21:25:172
2998199220,21cyclictest863-21avahi-daemon23:45:202
2998199220,21cyclictest6791-21expr19:25:152
2998199220,21cyclictest5345-21cat23:10:202
2998199220,21cyclictest28206-21if_err_enp1s021:00:152
2998199220,21cyclictest22888-21cut23:45:002
2998199220,21cyclictest14066-21cat20:35:142
2998199220,21cyclictest14066-21cat20:35:132
2998199220,21cyclictest12195-21expr23:25:132
2998199220,21cyclictest0-21swapper/223:50:142
2998099220,17cyclictest0-21swapper/100:04:591
2998099220,16cyclictest1529-21python320:15:011
2997999220,4cyclictest0-21swapper/023:10:040
29981992115,5cyclictest0-21swapper/220:42:162
29981992114,6cyclictest0-21swapper/200:35:172
2998199210,5cyclictest0-21swapper/220:50:122
2998199210,20cyclictest8321-21expr22:20:132
2998199210,20cyclictest31497-21ls22:05:122
2998199210,20cyclictest31448-21awk21:05:182
2998199210,20cyclictest30963-21latency_hist22:05:002
2998199210,20cyclictest27594-21sed21:55:222
2998199210,20cyclictest24596-21mailstats21:50:202
2998199210,20cyclictest21569-21sed22:45:002
2998199210,20cyclictest213622chrt20:48:512
2998199210,20cyclictest18747-21awk23:35:182
2998199210,20cyclictest16554-21sed23:30:212
2998199210,20cyclictest13676-21switchtime19:35:222
2998199210,19cyclictest26807-21chrt22:54:082
2998099212,1cyclictest0-21swapper/120:00:011
29980992115,1cyclictest100252chrt20:25:361
2998099211,15cyclictest5300-21systemctl21:15:201
2998099211,15cyclictest17637-21grep21:40:131
2998099210,3cyclictest0-21swapper/119:30:161
2998099210,16cyclictest1085-21gdbus20:20:211
2998199200,5cyclictest0-21swapper/223:20:172
2998199200,5cyclictest0-21swapper/200:05:212
2998199200,1cyclictest455-21plymouthd23:56:212
2998199200,1cyclictest0-21swapper/223:15:152
2998199200,1cyclictest0-21swapper/221:40:192
2998199200,19cyclictest31378-21missed_timers19:10:172
2998199200,19cyclictest27803-21expr22:55:122
2998199200,19cyclictest10293-21sort19:30:152
2998199200,19cyclictest0-21swapper/221:35:132
2998199200,19cyclictest0-21swapper/221:15:012
2998199200,19cyclictest0-21swapper/220:25:132
2998199200,19cyclictest0-21swapper/219:45:192
2998199200,19cyclictest0-21swapper/219:15:142
2998199200,19cyclictest0-21swapper/200:20:122
2998199200,19cyclictest0-21swapper/200:20:012
2998199200,15cyclictest0-21swapper/222:45:182
2998199200,0cyclictest0-21swapper/221:30:212
29980992017,2cyclictest15726-21sessionclean20:39:001
29980992017,2cyclictest15726-21sessionclean20:38:591
2998099200,16cyclictest31317-21nfsd421:05:171
2998099200,16cyclictest13456-21grep23:25:201
2997999200,18cyclictest7287-21python322:20:000
29981991914,4cyclictest0-21swapper/220:20:192
2998199190,4cyclictest0-21swapper/221:15:172
2998199190,1cyclictest0-21swapper/222:15:152
2998199190,18cyclictest0-21swapper/222:25:142
2998199190,18cyclictest0-21swapper/220:15:142
2998199190,18cyclictest0-21swapper/219:55:132
2998199190,0cyclictest0-21swapper/219:20:122
2998099193,15cyclictest21-21ksoftirqd/123:54:161
29980991917,1cyclictest0-21swapper/122:15:171
2998099190,16cyclictest6090-21sh19:25:001
2997999192,16cyclictest4591-21if_eno119:20:150
2997999192,16cyclictest3137-21latency_hist19:20:000
2997999190,15cyclictest0-21swapper/023:55:120
29981991815,2cyclictest3707-21master23:00:072
2998099182,15cyclictest10883-21switchtime21:25:221
29980991815,2cyclictest12142-21ntp_offset22:25:191
2998099181,2cyclictest3979-21H222:10:211
2998099181,16cyclictest24050-21chrt22:48:391
2998099181,16cyclictest0-21swapper/121:51:401
2998099180,2cyclictest3989-21H222:10:211
29979991814,2cyclictest0-21swapper/000:25:130
2997999180,17cyclictest3989-21H222:10:210
2997999180,17cyclictest14556-21latency_hist19:40:010
2997999180,15cyclictest3983-21H222:10:210
29980991715,1cyclictest0-21swapper/123:15:261
29980991715,1cyclictest0-21swapper/119:25:151
29980991714,2cyclictest9169-21/usr/sbin/munin23:20:121
29980991714,2cyclictest3979-21H222:10:211
29980991714,2cyclictest3976-21H222:10:211
29980991714,2cyclictest17177-21cron19:45:001
29980991714,2cyclictest17075-21dpkg00:30:021
29980991714,2cyclictest16745-21snapd21:02:481
29980991714,2cyclictest16491-21expr22:35:131
29980991714,2cyclictest15757-21sed21:35:171
29980991714,2cyclictest15319-21fschecks_time23:30:151
29980991714,2cyclictest1351-21lxd23:46:341
29980991714,1cyclictest0-21swapper/100:20:111
2998099170,2cyclictest4528-21sendmail-mta00:08:161
2998099170,2cyclictest3989-21H222:10:211
2998099170,2cyclictest3987-21H222:10:211
2998099170,2cyclictest1523-21lxd00:12:341
2998099170,16cyclictest6717-21cpuspeed_turbos21:20:141
2998099170,16cyclictest4665-21cron20:17:011
2998099170,16cyclictest455-21plymouthd22:20:161
2998099170,16cyclictest3981-21H222:10:211
2998099170,16cyclictest26362-21sed20:55:201
2998099170,16cyclictest22300-21expr20:50:131
2998099170,16cyclictest16748-21snapd23:10:181
2998099170,16cyclictest16745-21snapd20:30:181
2998099170,16cyclictest14573-21df_inode00:25:141
2997999172,1cyclictest0-21swapper/021:00:160
29979991714,2cyclictest993-21dbus-daemon23:08:590
29979991714,2cyclictest9905-21timerwakeupswit22:20:210
29979991714,2cyclictest9699-21cat21:25:130
29979991714,2cyclictest6440-21apt23:15:110
29979991714,2cyclictest28692-21cat22:55:170
29979991714,2cyclictest26197-21mailstats20:55:210
29979991714,2cyclictest25260-21runrttasks21:54:110
29979991714,2cyclictest1533-21python320:15:020
29979991714,2cyclictest13475-21/usr/sbin/munin22:30:110
29979991714,1cyclictest0-21swapper/020:40:160
2997999171,1cyclictest59472chrt21:18:450
2997999171,15cyclictest15712-21chrt20:38:470
2997999171,15cyclictest15712-21chrt20:38:470
2997999171,15cyclictest15652sleep000:04:230
2997999170,2cyclictest993-21dbus-daemon00:08:580
2997999170,2cyclictest4099-21H222:10:210
2997999170,2cyclictest28786-21/usr/sbin/munin20:05:130
2997999170,2cyclictest27105-21nfsd420:00:180
2997999170,1cyclictest0-21swapper/023:39:140
2997999170,16cyclictest3991-21H222:10:210
2997999170,16cyclictest28583-21grep22:00:130
2997999170,16cyclictest22753-21latency_hist21:50:000
2997999170,16cyclictest21688-21nvmesmart_nvme023:40:170
2997999170,16cyclictest20719-21if_err_lxdbr000:35:160
2997999170,16cyclictest17278-21munin-plugin-st23:35:010
2997999170,16cyclictest16767-21sed19:40:210
2997999170,16cyclictest12608-21fschecks_time23:25:140
2997999170,16cyclictest10508-21nfsd419:30:160
2997999170,16cyclictest0-21swapper/000:15:300
29980991614,1cyclictest0-21swapper/123:55:201
29980991614,1cyclictest0-21swapper/123:00:111
29980991614,1cyclictest0-21swapper/122:33:101
2998099160,15cyclictest8881-21ls00:15:141
2998099160,15cyclictest3976-21H222:10:211
2998099160,15cyclictest20180-21missed_timers22:40:171
2998099160,15cyclictest0-21swapper/123:05:171
2998099160,15cyclictest0-21swapper/122:00:151
2998099160,15cyclictest0-21swapper/121:55:151
2998099160,15cyclictest0-21swapper/121:45:161
2998099160,15cyclictest0-21swapper/121:10:081
2998099160,15cyclictest0-21swapper/120:45:151
2998099160,15cyclictest0-21swapper/120:40:131
2998099160,15cyclictest0-21swapper/120:00:171
29979991614,1cyclictest8163-21cpuspeed_turbos20:25:140
29979991614,1cyclictest0-21swapper/023:51:250
29979991614,1cyclictest0-21swapper/023:20:130
29979991614,1cyclictest0-21swapper/023:00:130
29979991614,1cyclictest0-21swapper/022:25:150
29979991614,1cyclictest0-21swapper/021:55:130
29979991614,1cyclictest0-21swapper/019:47:590
29979991614,1cyclictest0-21swapper/019:10:030
29979991613,2cyclictest31194-21wc21:05:160
2997999160,2cyclictest842-21cat21:10:120
2997999160,2cyclictest6819-21expr21:20:140
2997999160,2cyclictest6117-21idleruntime20:20:150
2997999160,1cyclictest0-21swapper/022:35:120
2997999160,15cyclictest5755-21apt-get00:10:030
2997999160,15cyclictest4099-21H222:10:210
2997999160,15cyclictest3979-21H222:10:210
2997999160,15cyclictest32404-21strings22:05:170
2997999160,15cyclictest20391-21cpuspeed_turbos19:50:140
2997999160,15cyclictest18357-21idleruntime21:40:150
2997999160,15cyclictest10937-21cut20:30:130
2997999160,15cyclictest0-21swapper/023:45:120
2997999160,15cyclictest0-21swapper/022:45:140
2997999160,15cyclictest0-21swapper/021:35:170
2997999160,15cyclictest0-21swapper/021:30:160
2997999160,15cyclictest0-21swapper/020:45:130
2997999160,15cyclictest0-21swapper/019:55:140
2997999160,15cyclictest0-21swapper/000:30:120
2997999160,15cyclictest0-21swapper/000:20:130
29980991513,1cyclictest0-21swapper/122:50:191
2998099150,1cyclictest0-21swapper/122:57:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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