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2025-12-27 - 00:47
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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 Fri Dec 26, 2025 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1172599230,5cyclictest0-21swapper/008:19:220
1173599212,18cyclictest0-21swapper/211:30:002
11735992114,7cyclictest0-21swapper/207:55:162
1173099204,1cyclictest3414-21master08:26:421
11730992018,2cyclictest0-21swapper/112:16:321
1172599203,16cyclictest2413-21sort11:39:010
11735991916,1cyclictest0-21swapper/211:13:352
11735991915,2cyclictest16709-21nfsd411:05:152
1173599190,18cyclictest0-21swapper/212:26:312
1173599190,18cyclictest0-21swapper/211:50:152
1173599190,16cyclictest0-21swapper/210:25:132
1173099190,3cyclictest0-21swapper/112:05:011
11735991815,2cyclictest25551-21grep12:20:122
11735991815,2cyclictest23288-21pzem08:25:212
11735991815,2cyclictest17648-21cut12:05:142
11735991814,3cyclictest3991-21H222:10:212
11735991813,3cyclictest0-21swapper/208:25:002
1173599180,17cyclictest2007-21systemd-journal11:58:212
1173599180,17cyclictest2007-21systemd-journal11:58:202
1173099182,1cyclictest0-21swapper/110:05:141
11730991816,1cyclictest10535-21taskset09:58:501
11730991815,2cyclictest21054-21nfsd412:10:171
11730991814,2cyclictest3788-21smartctl07:50:201
1173099180,17cyclictest20000-21df_inode10:15:161
1172599182,15cyclictest31707-21ntp_kernel_err10:35:200
11725991816,1cyclictest240222chrt08:29:440
11725991816,1cyclictest0-21swapper/007:54:080
11725991815,2cyclictest3978-21H222:10:210
11725991814,3cyclictest1516-21lxd09:00:410
11725991814,3cyclictest0-21swapper/011:40:170
1172599181,2cyclictest26537-21cut12:20:170
1172599181,2cyclictest26173-21grep07:35:160
1172599180,17cyclictest7997-21cut09:55:000
1172599180,17cyclictest426-21systemd-udevd10:48:510
11735991715,2cyclictest3954-21VM22:10:212
11735991714,2cyclictest5721-21sed08:50:222
11735991714,2cyclictest3985-21H222:10:212
11735991714,2cyclictest3976-21H222:10:212
11735991714,2cyclictest32454-21idleruntime07:45:162
11735991714,2cyclictest31030-21grep10:35:162
11735991714,2cyclictest30832-21sed07:40:222
11735991714,2cyclictest30419-21nfsd409:35:192
11735991714,2cyclictest1962-21latency08:45:152
11735991714,1cyclictest0-21swapper/208:10:172
1173599171,1cyclictest11039-21missed_timers09:00:172
1173599170,3cyclictest0-21swapper/212:12:062
1173599170,2cyclictest6886-21cpuspeed_turbos08:55:142
1173599170,2cyclictest3985-21H222:10:212
1173599170,2cyclictest3983-21H222:10:212
1173599170,2cyclictest26229-21cpuspeed_turbos07:35:152
1173599170,2cyclictest23331-21cron11:20:002
1173599170,16cyclictest6153-21chrt10:47:212
1173599170,16cyclictest3991-21H222:10:212
1173599170,16cyclictest3983-21H222:10:212
1173599170,16cyclictest3979-21H222:10:212
1173599170,16cyclictest3908-21fschecks_time11:40:182
1173599170,16cyclictest27684-21netstat09:30:192
1173599170,16cyclictest26616-21tlsmgr12:00:022
1173599170,16cyclictest24168-21/usr/sbin/munin11:20:142
1173599170,16cyclictest18588-21missed_timers07:20:172
1173599170,16cyclictest18058-21ntpq10:10:202
1173599170,16cyclictest18058-21ntpq10:10:202
1173599170,16cyclictest14698-21python311:05:002
1173599170,16cyclictest12657-21fschecks_count07:10:142
1173599170,16cyclictest1085-21gdbus07:15:222
1173599170,16cyclictest0-21swapper/211:35:202
1173599170,15cyclictest3979-21H222:10:212
1173099172,1cyclictest0-21swapper/109:30:151
1173099172,1cyclictest0-21swapper/109:10:161
11730991715,1cyclictest3979-21H222:10:211
11730991715,1cyclictest21-21ksoftirqd/111:04:021
11730991715,1cyclictest14492chrt07:47:081
11730991715,1cyclictest0-21swapper/107:20:161
11730991714,2cyclictest3976-21H222:10:211
11730991714,2cyclictest3053-21systemd-logind11:28:521
11730991714,2cyclictest20704-21expr07:25:131
11730991714,2cyclictest12529-21missed_timers11:55:171
11730991714,2cyclictest12529-21missed_timers11:55:171
1173099171,15cyclictest3985-21H222:10:211
1173099171,15cyclictest21-21ksoftirqd/108:57:291
1173099171,15cyclictest0-21swapper/107:30:121
1173099170,2cyclictest31784-21chrt11:33:181
1173099170,2cyclictest25148-21grep09:25:181
1173099170,2cyclictest19867-21sendmail_mailtr09:15:211
1173099170,2cyclictest1526-21lxd09:44:421
1173099170,2cyclictest1525-21lxd09:04:421
1173099170,2cyclictest1205-21expr08:45:121
1173099170,1cyclictest0-21swapper/111:43:301
1173099170,16cyclictest863-21avahi-daemon11:45:191
1173099170,16cyclictest3976-21H222:10:211
1173099170,16cyclictest2069-21systemd-udevd08:24:521
1173099170,16cyclictest1829-21systemd-journal10:38:151
1173099170,16cyclictest1523-21lxd10:12:421
1173099170,16cyclictest1523-21lxd10:12:411
1173099170,16cyclictest1441-21sendmail-mta08:36:451
1173099170,16cyclictest1171-21grep11:35:181
1172599172,1cyclictest231962sleep011:18:190
11725991715,1cyclictest3991-21H222:10:210
11725991715,1cyclictest198112chrt12:10:090
11725991715,1cyclictest1800-21forks12:35:110
11725991715,1cyclictest0-21swapper/012:00:140
11725991715,1cyclictest0-21swapper/011:20:130
11725991714,2cyclictest843-21systemd-network07:46:000
11725991714,2cyclictest21979-21grep09:20:150
11725991714,2cyclictest18589-21expr11:10:130
11725991714,2cyclictest14369-21cat10:05:150
11725991714,2cyclictest10968-21sed10:00:010
11725991714,2cyclictest0-21swapper/008:40:190
1172599171,2cyclictest29350-21nfsd412:25:190
1172599171,15cyclictest16220-21processes07:15:220
1172599170,3cyclictest0-21swapper/012:15:120
1172599170,2cyclictest7809-21cat08:55:170
1172599170,2cyclictest3351-21lxd12:06:420
1172599170,2cyclictest30004-21/usr/sbin/munin07:40:160
1172599170,2cyclictest2542-21sendmail_mailst10:40:220
1172599170,2cyclictest19733-21hddtemp_smartct08:20:160
1172599170,2cyclictest17681-21expr07:20:130
1172599170,2cyclictest1517-21lxd11:58:420
1172599170,2cyclictest1517-21lxd11:58:410
1172599170,2cyclictest1486-21snapd09:07:390
1172599170,2cyclictest13236-21nfsd407:10:170
1172599170,1cyclictest0-21swapper/009:25:180
1172599170,16cyclictest9760-21grep10:55:120
1172599170,16cyclictest4591-21expr08:50:140
1172599170,16cyclictest3991-21H222:10:210
11735991614,1cyclictest30373-21ls11:30:132
11735991614,1cyclictest0-21swapper/212:15:132
11735991614,1cyclictest0-21swapper/210:50:152
11735991614,1cyclictest0-21swapper/209:40:142
11735991614,1cyclictest0-21swapper/208:35:152
11735991613,2cyclictest21901-21nfsd407:25:192
1173599160,1cyclictest0-21swapper/212:35:112
1173599160,1cyclictest0-21swapper/209:55:192
1173599160,1cyclictest0-21swapper/208:30:012
1173599160,15cyclictest9493-21cron10:55:002
1173599160,15cyclictest23777-21expr07:30:112
1173599160,15cyclictest19511-21cpuspeed_turbos10:15:142
1173599160,15cyclictest16764-21nfsd409:10:162
1173599160,15cyclictest13035-21cstates09:05:142
1173599160,15cyclictest0-21swapper/210:40:222
1173599160,15cyclictest0-21swapper/210:00:132
1173599160,15cyclictest0-21swapper/208:40:182
1173599160,15cyclictest0-21swapper/208:00:162
1173599160,15cyclictest0-21swapper/208:00:152
1173599160,14cyclictest0-21swapper/210:32:022
11730991614,1cyclictest14513-21pluginstate07:15:021
11730991614,1cyclictest10215-21proc_pri11:50:231
11730991614,1cyclictest0-21swapper/112:26:061
11730991614,1cyclictest0-21swapper/112:09:011
11730991614,1cyclictest0-21swapper/111:10:131
11730991614,1cyclictest0-21swapper/111:05:131
11730991614,1cyclictest0-21swapper/109:20:131
11730991614,1cyclictest0-21swapper/108:05:181
11730991613,2cyclictest8513-21df08:00:151
11730991613,2cyclictest8513-21df08:00:141
11730991613,2cyclictest1483-21snapd11:15:081
1173099161,1cyclictest0-21swapper/110:00:171
1173099160,2cyclictest3226-21expr09:45:131
1173099160,2cyclictest28760-21needreboot10:30:181
1173099160,1cyclictest0-21swapper/108:10:131
1173099160,1cyclictest0-21swapper/107:40:131
1173099160,15cyclictest5709-21expr07:55:141
1173099160,15cyclictest4470-21expr08:50:141
1173099160,15cyclictest3985-21H222:10:211
1173099160,15cyclictest3983-21H222:10:211
1173099160,15cyclictest30987-21timerandwakeup09:35:221
1173099160,15cyclictest30707-21cpuspeed_turbos08:40:161
1173099160,15cyclictest10155-21tune2fs10:55:141
1173099160,15cyclictest0-21swapper/112:35:101
1173099160,15cyclictest0-21swapper/112:20:151
1173099160,15cyclictest0-21swapper/110:50:151
1173099160,15cyclictest0-21swapper/110:40:211
1173099160,15cyclictest0-21swapper/108:30:131
1173099160,15cyclictest0-21swapper/108:15:181
1173099160,15cyclictest0-21swapper/107:35:211
11725991615,1cyclictest9-21ksoftirqd/011:53:530
11725991614,1cyclictest1592-21df08:45:130
11725991614,1cyclictest0-21swapper/011:45:120
11725991614,1cyclictest0-21swapper/011:33:450
11725991614,1cyclictest0-21swapper/010:25:120
11725991614,1cyclictest0-21swapper/009:45:150
11725991614,1cyclictest0-21swapper/009:40:140
11725991614,1cyclictest0-21swapper/008:10:140
11725991614,1cyclictest0-21swapper/008:00:160
11725991614,1cyclictest0-21swapper/008:00:160
11725991614,1cyclictest0-21swapper/007:30:120
11725991613,2cyclictest28911-21grep08:35:190
1172599160,15cyclictest7520-21smartctl10:50:150
1172599160,15cyclictest5182-21apache_volume07:55:130
1172599160,15cyclictest26460-21/usr/sbin/munin09:30:140
1172599160,15cyclictest22352-21cpuspeed_turbos10:20:160
1172599160,15cyclictest19426-21apt-get10:15:140
1172599160,15cyclictest12754-21ls11:00:150
1172599160,15cyclictest0-21swapper/012:30:150
1172599160,15cyclictest0-21swapper/011:25:130
1172599160,15cyclictest0-21swapper/011:05:100
1172599160,15cyclictest0-21swapper/010:30:130
1172599160,15cyclictest0-21swapper/010:00:170
1172599160,15cyclictest0-21swapper/009:35:160
1172599160,15cyclictest0-21swapper/008:30:140
1172599160,15cyclictest0-21swapper/008:05:120
1173599150,15cyclictest0-21swapper/212:30:162
1173599150,14cyclictest0-21swapper/207:50:142
1173099150,14cyclictest0-21swapper/110:20:141
1173099150,14cyclictest0-21swapper/107:15:121
11725991512,2cyclictest17034-21ls10:10:140
11725991512,2cyclictest17034-21ls10:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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