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2026-04-21 - 19:15
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Tue Apr 21, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3172999230,19cyclictest0-21swapper/012:16:280
3172999230,19cyclictest0-21swapper/012:16:280
3173599222,17cyclictest0-21swapper/210:12:252
3173599212,17cyclictest0-21swapper/209:09:292
31735992114,4cyclictest27931-21nfsd409:50:182
3173599210,20cyclictest5362-21cut11:05:152
3173099210,3cyclictest0-21swapper/112:27:591
31735992011,5cyclictest0-21swapper/211:40:192
3173599200,19cyclictest27271-21latency_hist08:55:012
3173599200,17cyclictest0-21swapper/208:00:182
3172999204,15cyclictest0-21swapper/012:33:420
3173599193,15cyclictest15467-21basename08:30:222
3173599192,2cyclictest32166-21cat09:00:222
3173599192,16cyclictest0-21swapper/211:12:152
31735991918,1cyclictest0-21swapper/208:55:162
31735991917,1cyclictest0-21swapper/212:15:002
31735991916,2cyclictest9423-21sh12:09:002
31735991916,2cyclictest19943-21sed11:30:162
31735991916,2cyclictest17329-21cat10:30:142
31735991916,2cyclictest14799-21ls10:25:142
31735991916,1cyclictest0-21swapper/211:51:082
31735991915,3cyclictest878-21in:imuxsock12:00:012
31735991915,2cyclictest1911-21cpuspeed_turbos11:00:132
3173599191,16cyclictest18026-21cut08:35:202
3173599190,3cyclictest0-21swapper/211:15:162
3173599190,2cyclictest18071-21cat12:25:012
3173599190,18cyclictest0-21swapper/210:00:152
3173099192,3cyclictest0-21swapper/110:43:231
3173099192,3cyclictest0-21swapper/109:14:251
3173099192,2cyclictest6564-21expr10:10:131
3173099192,2cyclictest21875-21chrt10:37:421
3173099192,2cyclictest17779-21pzem_current11:25:211
3173099192,16cyclictest8560-21tr11:10:161
3173099192,16cyclictest32148-21if_lxdbr010:55:181
3173099192,16cyclictest0-21swapper/111:35:141
31730991917,1cyclictest0-21swapper/110:15:161
31730991917,1cyclictest0-21swapper/108:45:011
31730991916,0cyclictest0-21swapper/109:52:431
31730991912,7cyclictest0-21swapper/111:56:481
3173099191,15cyclictest0-21swapper/110:50:001
3173099190,4cyclictest22612-21latency_hist07:50:011
3173099190,3cyclictest0-21swapper/108:29:481
3173099190,1cyclictest0-21swapper/108:50:011
3172999194,9cyclictest5276-21latency_hist10:10:000
3173599182,1cyclictest23910-21expr12:35:152
3173599182,1cyclictest0-21swapper/209:48:302
3173599182,15cyclictest2044-21cat07:15:012
3173599182,15cyclictest14684-21timerwakeupswit09:25:212
3173599182,15cyclictest0-21swapper/209:40:202
31735991816,1cyclictest0-21swapper/207:35:022
31735991815,2cyclictest27844-21cat11:45:142
31735991814,3cyclictest0-21swapper/211:20:182
31735991814,3cyclictest0-21swapper/210:25:002
3173599181,16cyclictest8576-21sed09:15:222
3173599181,16cyclictest32605-21awk10:55:192
3173599181,16cyclictest3100-21cstates10:05:132
3173599181,16cyclictest20831-21cut09:40:002
3173599181,16cyclictest0-21swapper/210:40:152
3173599180,3cyclictest19938-21sed07:45:012
3173599180,3cyclictest12328-21cut07:30:182
3173599180,1cyclictest0-21swapper/208:45:182
3173599180,17cyclictest17598-21taskset09:32:222
3173599180,17cyclictest1274-21runrttasks08:14:352
3173599180,17cyclictest10871-21cut08:25:012
3173599180,17cyclictest10871-21cut08:25:012
3173599180,17cyclictest0-21swapper/209:15:012
3173599180,16cyclictest0-21swapper/207:15:572
3173099182,1cyclictest18872sleep110:02:511
3173099182,15cyclictest6450-21chrt07:20:161
3173099182,15cyclictest2994-21nfsd411:00:181
3173099182,15cyclictest18022-21ls12:25:001
3173099182,15cyclictest0-21swapper/112:15:151
3173099182,15cyclictest0-21swapper/112:15:151
3173099182,15cyclictest0-21swapper/112:00:051
31730991816,1cyclictest0-21swapper/109:08:001
31730991814,3cyclictest21285-21latency_hist11:35:001
31730991814,3cyclictest14496-21snapd07:30:561
3173099181,2cyclictest30923-21sed08:05:011
3173099181,16cyclictest23409-21seq09:44:471
3173099181,15cyclictest0-21swapper/110:09:351
3173099180,3cyclictest32722-21wc08:05:191
3173099180,2cyclictest9935-21apt-get11:15:031
3173099180,2cyclictest5364-21fschecks_count11:05:161
3173099180,1cyclictest0-21swapper/108:10:171
3173099180,17cyclictest26584-21/usr/sbin/munin10:45:181
3173099180,16cyclictest13870-21gpgv07:35:011
31729991814,2cyclictest0-21swapper/010:45:210
3172999180,17cyclictest3981-21H222:10:210
31735991715,1cyclictest0-21swapper/210:15:132
31735991714,2cyclictest5184-21apt-key08:15:012
31735991714,2cyclictest31884-21fschecks_count08:05:142
31735991714,2cyclictest20974-21apache_accesses12:30:112
31735991714,2cyclictest12766-21apache_accesses12:15:112
31735991714,2cyclictest12766-21apache_accesses12:15:112
3173599170,2cyclictest9900-21gpg-connect-age09:20:022
3173599170,2cyclictest26547-21uname10:45:182
3173599170,2cyclictest26217-21expr07:55:142
3173599170,2cyclictest26217-21expr07:55:142
3173599170,2cyclictest23676-21chrt11:35:342
3173599170,2cyclictest20306-21cstates10:35:162
3173599170,2cyclictest16615-21expr11:25:142
3173599170,2cyclictest11063-21rm08:25:012
3173599170,16cyclictest9283-21sed07:25:172
3173599170,16cyclictest6817-21grep07:20:172
3173599170,16cyclictest4467-21grep12:00:122
3173599170,16cyclictest29315-21apache_processe09:55:122
3173599170,16cyclictest27700-21apt-get10:50:012
3173599170,16cyclictest23535-21cstates07:50:142
3173599170,16cyclictest20674-21expr07:45:142
3173599170,16cyclictest20565-21memory08:40:182
3173599170,16cyclictest18911-21grep12:25:172
31730991714,2cyclictest3979-21H222:10:211
31730991714,2cyclictest26468-21hddtemp_smartct07:55:151
31730991714,2cyclictest26468-21hddtemp_smartct07:55:151
31730991714,2cyclictest24980-21apache_volume08:50:121
31730991714,2cyclictest19618-21ntpq09:35:181
31730991714,2cyclictest17047-21apt10:30:121
3173099171,1cyclictest115962chrt10:20:121
31730991711,5cyclictest0-21swapper/107:16:201
3173099170,2cyclictest8230-21debian-sa107:25:011
3173099170,2cyclictest5340-21/usr/sbin/munin08:15:111
3173099170,2cyclictest30400-21apt-config11:50:011
3173099170,2cyclictest28085-21expr08:55:141
3173099170,2cyclictest27927-21df_inode11:45:141
3173099170,2cyclictest24393-21cstates09:45:141
3173099170,2cyclictest20955-21/usr/sbin/munin12:30:121
3173099170,2cyclictest17242-21fschecks_count08:35:151
3173099170,2cyclictest15955-21expr09:30:121
3173099170,2cyclictest14665-21expr10:25:141
3173099170,2cyclictest10016-21/usr/sbin/munin12:10:101
3173099170,16cyclictest9876-21apt-config09:20:021
3173099170,16cyclictest7374-21cstates09:15:141
3173099170,16cyclictest7232-21grep12:05:131
3173099170,16cyclictest30756-21cstates09:00:141
3173099170,16cyclictest25093-21expr11:40:131
3173099170,16cyclictest23685-21/usr/sbin/munin12:35:151
3173099170,16cyclictest14309-21if_eno111:20:151
3173099170,16cyclictest12749-21/usr/sbin/munin09:25:131
3173099170,16cyclictest0-21swapper/108:30:181
3173099170,16cyclictest0-21swapper/107:10:031
3172999172,1cyclictest9-21ksoftirqd/009:49:430
31729991715,1cyclictest0-21swapper/010:55:180
31729991714,2cyclictest3991-21H222:10:210
31729991714,2cyclictest3991-21H222:10:210
31729991714,2cyclictest3985-21H222:10:210
31729991714,2cyclictest31345-21irqstats09:00:170
31729991714,2cyclictest30368-21cnf-update-db11:50:010
31729991714,2cyclictest25836-21taskset12:37:550
31729991714,2cyclictest24465-21ls10:40:220
31729991714,2cyclictest17346-21sed08:35:160
31729991714,2cyclictest14505-21snapd09:28:160
31729991714,1cyclictest0-21swapper/010:17:270
3172999171,1cyclictest0-21swapper/009:14:240
3172999170,2cyclictest7940-21sed09:15:180
3172999170,2cyclictest3681-21mailstats08:10:200
3172999170,2cyclictest3053-21systemd-logind09:06:520
3172999170,2cyclictest27882-21cat11:45:140
3172999170,2cyclictest27872-21grep08:55:140
3172999170,2cyclictest0-21swapper/011:55:180
3172999170,16cyclictest6150-21fschecks_count07:20:140
3172999170,16cyclictest31245-21proxymap07:10:220
3172999170,16cyclictest20809-21expr07:45:150
3172999170,16cyclictest19376-21needreboot09:35:180
3172999170,16cyclictest16066-21expr12:20:140
3172999170,16cyclictest1521-21lxd11:42:420
3172999170,16cyclictest1515-21lxd09:40:420
3172999170,16cyclictest1351-21lxd12:02:420
3172999170,16cyclictest10498-21perf08:25:010
3172999170,16cyclictest10498-21perf08:25:010
31730991614,1cyclictest0-21swapper/107:40:011
3173099160,1cyclictest23034-21apache_accesses07:50:111
3173099160,15cyclictest0-21swapper/108:20:141
3173099160,15cyclictest0-21swapper/108:20:141
31729991614,1cyclictest7721-21expr12:05:140
31729991614,1cyclictest3450-21gsd-color11:27:280
31729991614,1cyclictest12011-21latency07:30:170
31729991614,1cyclictest0-21swapper/012:10:130
31729991614,1cyclictest0-21swapper/011:35:200
31729991614,1cyclictest0-21swapper/011:20:130
31729991614,1cyclictest0-21swapper/011:05:140
31729991614,1cyclictest0-21swapper/011:00:170
31729991614,1cyclictest0-21swapper/010:35:190
31729991614,1cyclictest0-21swapper/009:50:130
31729991614,1cyclictest0-21swapper/009:30:150
31729991614,1cyclictest0-21swapper/009:20:210
31729991614,1cyclictest0-21swapper/008:40:200
31729991614,1cyclictest0-21swapper/008:30:150
31729991614,1cyclictest0-21swapper/007:40:150
31729991614,1cyclictest0-21swapper/007:15:150
31729991613,2cyclictest7777-21cpuspeed_turbos11:10:130
3172999160,2cyclictest18966-21/usr/sbin/munin11:30:120
3172999160,1cyclictest0-21swapper/009:55:200
3172999160,1cyclictest0-21swapper/008:00:140
3172999160,15cyclictest6079-21/usr/sbin/munin10:10:160
3172999160,15cyclictest5794-21cat08:15:140
3172999160,15cyclictest24955-21/usr/sbin/munin08:50:170
3172999160,15cyclictest24198-21grep07:50:180
3172999160,15cyclictest20460-21taskset12:28:580
3172999160,15cyclictest17668-21fschecks_count10:30:150
3172999160,15cyclictest0-21swapper/011:15:130
3172999160,15cyclictest0-21swapper/010:50:160
3172999160,15cyclictest0-21swapper/010:25:140
3172999160,15cyclictest0-21swapper/010:20:170
3172999160,15cyclictest0-21swapper/010:00:100
3172999160,15cyclictest0-21swapper/008:45:110
31729991514,1cyclictest0-21swapper/007:25:150
3172999150,1cyclictest0-21swapper/008:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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