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2025-12-19 - 22:49
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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 Fri Dec 19, 2025 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28869992515,0cyclictest0-21swapper/109:12:331
2887099240,23cyclictest21080-21cron08:50:012
28870992313,5cyclictest0-21swapper/211:35:132
2886999215,14cyclictest0-21swapper/108:30:351
2886999210,3cyclictest0-21swapper/111:07:521
2886999210,20cyclictest0-21swapper/107:35:141
2886899214,2cyclictest12466-21apt-key08:35:010
28870992018,1cyclictest0-21swapper/211:56:162
28869992011,0cyclictest0-21swapper/111:29:171
2887099193,11cyclictest18854-21munin-run10:40:002
2887099192,2cyclictest4051-21proc_pri10:10:192
28870991915,3cyclictest3985-21H222:10:212
2887099191,16cyclictest7391-21cpuspeed_turbos11:15:122
2886999192,1cyclictest4099-21H222:10:211
28869991916,2cyclictest0-21swapper/107:40:311
2886999191,1cyclictest0-21swapper/110:46:461
2886899192,15cyclictest0-21swapper/007:18:380
2886899192,15cyclictest0-21swapper/007:18:370
2886899190,3cyclictest20990-21tr09:45:130
2886899190,3cyclictest0-21swapper/007:53:450
2886899190,18cyclictest4099-21H222:10:210
2886899190,16cyclictest4035-21H222:10:210
2887099182,15cyclictest28-21ksoftirqd/211:50:472
2887099182,15cyclictest28-21ksoftirqd/211:28:162
2887099182,15cyclictest0-21swapper/212:25:112
28870991815,1cyclictest3989-21H222:10:212
2887099180,2cyclictest3989-21H222:10:212
28869991817,1cyclictest21-21ksoftirqd/107:47:211
28869991816,1cyclictest21-21ksoftirqd/110:57:031
28869991814,3cyclictest3985-21H222:10:211
2886999181,1cyclictest0-21swapper/108:43:531
2886999180,2cyclictest4035-21H222:10:211
2886999180,2cyclictest3983-21H222:10:211
2886999180,2cyclictest3935-21nvmesmart_nvme010:10:191
2886999180,18cyclictest0-21swapper/111:10:191
2886999180,17cyclictest22453-21munin-plugin-st07:55:011
2886999180,16cyclictest3985-21H222:10:211
2886899183,1cyclictest3983-21H222:10:210
2886899181,16cyclictest989-21gmain10:25:000
2886899181,16cyclictest31998-21sessionclean09:09:000
2886899180,2cyclictest4035-21H222:10:210
2886899180,2cyclictest3991-21H222:10:210
28870991714,2cyclictest6365-21grep12:10:142
28870991714,2cyclictest5937-21apache207:25:002
28870991714,2cyclictest5704-21turbostat09:20:002
28870991714,2cyclictest5108-21expr11:10:152
28870991714,2cyclictest3987-21H222:10:212
28870991714,2cyclictest3983-21H222:10:212
28870991714,2cyclictest30233-21nfsd410:00:162
28870991714,2cyclictest23345-21fschecks_time10:45:142
2887099171,15cyclictest3985-21H222:10:212
2887099170,2cyclictest8999-21kernelversion10:20:172
2887099170,2cyclictest6565-21grep10:15:182
2887099170,2cyclictest3991-21H222:10:212
2887099170,2cyclictest3985-21H222:10:212
2887099170,2cyclictest32074-21sed09:09:012
2887099170,2cyclictest2545-21missed_timers08:15:162
2887099170,2cyclictest1517-21lxd12:16:402
2887099170,2cyclictest13804-21expr10:30:122
2887099170,1cyclictest0-21swapper/209:30:522
2887099170,1cyclictest0-21swapper/207:59:512
2887099170,16cyclictest9979-21http_loadtime09:25:152
2887099170,16cyclictest8733-21awk08:25:182
2887099170,16cyclictest7403-21expr07:25:182
2887099170,16cyclictest4099-21H222:10:212
2887099170,16cyclictest3989-21H222:10:212
2887099170,16cyclictest32243-21cat07:15:142
2887099170,16cyclictest32243-21cat07:15:142
2887099170,16cyclictest28381-21cut10:55:132
2887099170,16cyclictest26105-21fschecks_time08:00:152
2887099170,16cyclictest25079-21nfsd411:45:182
2887099170,16cyclictest22578-21/usr/sbin/munin11:40:202
2887099170,16cyclictest2113-21perf12:05:002
2887099170,16cyclictest19732-21ls07:50:012
2887099170,16cyclictest18682-21fschecks_time09:40:162
2887099170,16cyclictest0-21swapper/212:30:192
2887099170,15cyclictest4099-21H222:10:212
2887099170,15cyclictest3991-21H222:10:212
2887099170,15cyclictest0-21swapper/209:49:052
28869991715,1cyclictest0-21swapper/111:00:151
28869991714,2cyclictest3987-21H222:10:211
28869991714,2cyclictest3450-21gsd-color09:45:181
28869991714,2cyclictest30478-21awk07:10:181
28869991714,2cyclictest28177-21netstat09:00:181
28869991714,2cyclictest27209-21sed10:50:211
28869991714,2cyclictest18309-21tr11:35:131
28869991714,2cyclictest10078-21/usr/sbin/munin12:15:201
2886999171,15cyclictest4100-21H222:10:211
2886999171,15cyclictest15922sleep107:15:471
2886999171,15cyclictest15922sleep107:15:471
2886999170,2cyclictest3991-21H222:10:211
2886999170,2cyclictest3983-21H222:10:211
2886999170,2cyclictest3981-21H222:10:211
2886999170,2cyclictest2069-21systemd-udevd09:38:521
2886999170,2cyclictest2069-21systemd-udevd09:08:521
2886999170,2cyclictest2007-21systemd-journal08:26:161
2886999170,2cyclictest1486-21snapd10:17:401
2886999170,1cyclictest3985-21H222:10:211
2886999170,1cyclictest0-21swapper/110:00:201
2886999170,1cyclictest0-21swapper/108:19:351
2886999170,16cyclictest8481-21grep11:15:171
2886999170,16cyclictest6945-21awk12:10:171
2886999170,16cyclictest3987-21H222:10:211
2886999170,16cyclictest31445-21expr08:10:151
2886999170,16cyclictest31445-21expr08:10:151
2886999170,16cyclictest2866-21expr12:05:141
2886999170,16cyclictest23880-21expr09:50:131
2886999170,16cyclictest21201-21ls10:40:211
2886999170,16cyclictest2069-21systemd-udevd09:42:511
2886999170,16cyclictest12666-21expr09:30:121
2886999170,16cyclictest10066-21cat09:25:161
2886999170,16cyclictest0-21swapper/108:05:011
2886999170,16cyclictest0-21swapper/107:58:221
28868991715,1cyclictest0-21swapper/007:35:150
28868991714,2cyclictest8985-21ls08:25:200
28868991714,2cyclictest7282-21idleruntime09:20:160
28868991714,2cyclictest4035-21H222:10:210
28868991714,2cyclictest3991-21H222:10:210
28868991714,2cyclictest3991-21H222:10:210
28868991714,2cyclictest31164-21tr08:10:140
28868991714,2cyclictest31164-21tr08:10:130
28868991714,2cyclictest27749-21needreboot11:50:170
28868991714,2cyclictest25639-21sed11:45:210
28868991714,2cyclictest12732-21find11:25:130
28868991714,2cyclictest10080-21nfsd407:30:160
28868991714,1cyclictest0-21swapper/012:08:580
28868991713,3cyclictest0-21swapper/009:56:320
28868991713,3cyclictest0-21swapper/009:56:320
2886899170,2cyclictest3985-21H222:10:210
2886899170,2cyclictest2069-21systemd-udevd10:32:520
2886899170,2cyclictest18813-21sendmail_mailtr07:45:210
2886899170,2cyclictest15297-21tr09:35:140
2886899170,2cyclictest12050-21/usr/sbin/munin12:20:160
2886899170,2cyclictest1102-21ntp_offset12:00:190
2886899170,1cyclictest4035-21H222:10:210
2886899170,1cyclictest0-21swapper/010:46:160
2886899170,16cyclictest29371-21date09:05:010
2886899170,16cyclictest28829-21fschecks_time08:05:150
2886899170,16cyclictest28402-21cstates10:55:140
2886899170,16cyclictest24227-21pzem_voltage07:55:200
2886899170,16cyclictest22665-21grep08:50:170
2886899170,16cyclictest20407-21sendmail-mta12:35:140
2886899170,16cyclictest20407-21sendmail-mta12:35:140
2886899170,16cyclictest18711-21cat11:35:140
2886899170,16cyclictest1856-21systemd-udevd11:18:520
2886899170,16cyclictest1175-21cat11:05:010
2886899170,16cyclictest0-21swapper/009:40:190
28870991614,1cyclictest28499-21expr08:05:142
28870991614,1cyclictest0-21swapper/211:00:142
28870991614,1cyclictest0-21swapper/208:10:122
28870991614,1cyclictest0-21swapper/208:10:112
28870991614,1cyclictest0-21swapper/207:10:142
28870991613,2cyclictest26952-21/usr/sbin/munin09:00:212
28870991613,2cyclictest17794-21grep08:40:212
2887099160,1cyclictest0-21swapper/211:30:202
2887099160,1cyclictest0-21swapper/211:20:212
2887099160,1cyclictest0-21swapper/211:05:162
2887099160,1cyclictest0-21swapper/209:50:122
2887099160,1cyclictest0-21swapper/209:35:142
2887099160,1cyclictest0-21swapper/208:55:132
2887099160,1cyclictest0-21swapper/207:30:102
2887099160,15cyclictest0-21swapper/212:35:132
2887099160,15cyclictest0-21swapper/212:35:122
2887099160,15cyclictest0-21swapper/209:55:112
2887099160,15cyclictest0-21swapper/209:55:102
2887099160,15cyclictest0-21swapper/209:20:152
2887099160,15cyclictest0-21swapper/208:50:142
2887099160,15cyclictest0-21swapper/208:35:142
2887099160,15cyclictest0-21swapper/208:35:142
28869991614,1cyclictest11710-21/usr/sbin/munin10:25:171
28869991614,1cyclictest0-21swapper/112:35:211
28869991614,1cyclictest0-21swapper/112:35:201
28869991614,1cyclictest0-21swapper/111:50:121
28869991614,1cyclictest0-21swapper/111:30:171
28869991614,1cyclictest0-21swapper/109:55:161
28869991614,1cyclictest0-21swapper/109:55:151
28869991614,1cyclictest0-21swapper/108:50:141
28869991614,1cyclictest0-21swapper/108:35:251
28869991614,1cyclictest0-21swapper/108:35:251
2886999160,2cyclictest24675-21cat08:55:151
2886999160,1cyclictest0-21swapper/112:25:011
2886999160,1cyclictest0-21swapper/111:45:201
2886999160,15cyclictest21211-21cpuspeed_turbos11:40:131
2886999160,15cyclictest0-21swapper/112:20:091
2886999160,15cyclictest0-21swapper/111:55:121
2886999160,15cyclictest0-21swapper/108:20:161
28868991614,1cyclictest971-21ls09:10:150
28868991614,1cyclictest5575-21latency_hist07:25:020
28868991614,1cyclictest25669-21cat10:50:130
28868991614,1cyclictest0-21swapper/011:10:210
28868991614,1cyclictest0-21swapper/011:05:160
28868991614,1cyclictest0-21swapper/010:15:170
28868991614,1cyclictest0-21swapper/009:50:130
28868991614,1cyclictest0-21swapper/008:45:130
28868991613,2cyclictest3989-21H222:10:210
28868991613,2cyclictest1475-21grep08:15:120
2886899160,1cyclictest4579-21nfsd409:15:170
2886899160,1cyclictest0-21swapper/010:25:120
2886899160,15cyclictest3989-21H222:10:210
2886899160,15cyclictest31259-21dump-pmu-power10:05:000
2886899160,15cyclictest217822sleep010:44:080
2886899160,15cyclictest10391-21expr11:20:150
2886899160,15cyclictest0-21swapper/012:30:130
2886899160,15cyclictest0-21swapper/012:10:160
2886899160,15cyclictest0-21swapper/011:40:140
2886899160,15cyclictest0-21swapper/010:35:170
2886899160,15cyclictest0-21swapper/008:55:130
2886899160,15cyclictest0-21swapper/007:10:220
28868991514,1cyclictest0-21swapper/010:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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