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2025-12-20 - 17:32
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Dec 20, 2025 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9481992423,0cyclictest0-21swapper/109:33:531
947799230,18cyclictest17874-21date07:25:000
9481992212,9cyclictest0-21swapper/107:15:161
948199220,21cyclictest843-21systemd-network09:50:211
9477992213,8cyclictest843-21systemd-network09:07:350
947799218,1cyclictest0-21swapper/010:55:000
948699206,13cyclictest0-21swapper/212:02:252
948699200,15cyclictest0-21swapper/211:30:152
948199204,15cyclictest0-21swapper/111:30:161
9477992018,1cyclictest0-21swapper/009:15:020
948699194,1cyclictest0-21swapper/211:10:132
948699193,15cyclictest17778-21expr10:15:152
9486991917,1cyclictest32639-21expr09:45:142
948699190,5cyclictest0-21swapper/210:52:272
948699190,3cyclictest0-21swapper/208:24:182
9481991910,8cyclictest843-21systemd-network12:22:221
9477991917,1cyclictest9-21ksoftirqd/009:20:490
947799190,5cyclictest0-21swapper/011:34:130
947799190,18cyclictest0-21swapper/011:35:220
947799190,16cyclictest0-21swapper/011:01:210
948699182,15cyclictest16049-21if_enp1s007:20:172
9486991815,2cyclictest7152-21cron09:00:002
9486991815,1cyclictest0-21swapper/211:04:362
9486991814,3cyclictest0-21swapper/209:41:472
9486991814,3cyclictest0-21swapper/208:40:192
9486991814,3cyclictest0-21swapper/207:55:022
9486991814,1cyclictest0-21swapper/209:05:192
948199182,2cyclictest28947-21seq07:44:401
948199182,1cyclictest0-21swapper/110:51:141
9481991816,1cyclictest3733-21switchtime08:50:231
9481991815,2cyclictest18446-21date09:20:001
9481991814,3cyclictest3983-21H222:10:211
9481991814,3cyclictest3983-21H222:10:211
9481991814,3cyclictest12736-21nfsd410:05:181
9481991814,3cyclictest0-21swapper/108:55:401
9481991814,3cyclictest0-21swapper/107:45:561
9481991813,2cyclictest29169-21cstates10:35:151
948199181,2cyclictest0-21swapper/109:05:001
948199180,17cyclictest28977-21sshd09:37:131
947799189,5cyclictest0-21swapper/011:05:130
947799183,11cyclictest11274-21perf08:10:010
9477991816,1cyclictest0-21swapper/011:21:210
9477991815,2cyclictest31967-21latency_hist12:35:010
9477991814,3cyclictest4099-21H222:10:210
9477991811,6cyclictest399-20systemd-journal09:44:550
947799181,16cyclictest1481-21snapd08:22:390
947799180,3cyclictest1521-21lxd10:02:400
947799180,3cyclictest1521-21lxd10:02:390
9486991716,1cyclictest28-21ksoftirqd/208:50:222
9486991714,2cyclictest9841-21smartctl10:55:202
9486991714,2cyclictest6403-21expr09:55:142
9486991714,2cyclictest21774-21chrt11:19:292
9486991714,2cyclictest20318-21acpi10:20:132
9486991714,2cyclictest19332-21sed12:10:162
9486991714,2cyclictest1869-21if_enp1s011:40:172
9486991714,2cyclictest15929-21/usr/sbin/munin09:15:182
9486991714,2cyclictest10395-21if_eno111:55:152
9486991713,3cyclictest3985-21H222:10:212
9486991713,3cyclictest1521-21lxd08:02:392
948699171,15cyclictest0-21swapper/211:20:182
948699170,2cyclictest4117-21pzem_voltage10:45:212
948699170,2cyclictest3976-21H222:10:212
948699170,2cyclictest30914-21smtp10:36:222
948699170,2cyclictest28473-21ls07:40:222
948699170,2cyclictest25694-21hddtemp_smartct11:25:172
948699170,2cyclictest25014-21/usr/sbin/munin09:30:172
948699170,2cyclictest11104-21cut10:05:012
948699170,2cyclictest11104-21cut10:05:002
948699170,1cyclictest0-21swapper/210:29:232
948699170,16cyclictest32002-21/usr/sbin/munin12:35:172
948699170,16cyclictest29622-21expr12:30:152
948699170,16cyclictest24405-21ntpq08:30:212
948699170,16cyclictest22658-21cut09:25:202
948699170,16cyclictest21829-21pzem_voltage08:25:222
948699170,16cyclictest18438-21grep07:25:172
948699170,16cyclictest15456-21/usr/sbin/munin12:05:142
948699170,16cyclictest1486-21snapd11:35:082
948699170,16cyclictest1375-21munin-node08:35:132
948699170,16cyclictest1348-21lxd09:36:392
948699170,16cyclictest11102-21sessionclean08:09:002
948699170,16cyclictest1100-21snmpd07:35:202
948699170,15cyclictest3983-21H222:10:212
948199172,1cyclictest21-21ksoftirqd/109:45:151
9481991715,1cyclictest286202sleep112:26:481
9481991715,1cyclictest0-21swapper/108:34:511
9481991714,2cyclictest4597-21cut07:55:201
9481991714,2cyclictest31344-21/usr/sbin/munin08:45:151
9481991714,2cyclictest27111-21ntpq08:35:201
9481991714,2cyclictest24205-21grep10:25:181
9481991714,2cyclictest20684-21needreboot11:15:181
9481991714,2cyclictest0-21swapper/108:10:151
9481991712,2cyclictest16824-21nfsd412:05:171
948199170,2cyclictest5129-21munin-plugin-st10:50:001
948199170,2cyclictest3985-21H222:10:211
948199170,2cyclictest30800-21latency09:40:191
948199170,2cyclictest30023-21ntp_offset08:40:181
948199170,2cyclictest25122-21grep07:35:201
948199170,2cyclictest22041-21/usr/sbin/munin09:25:161
948199170,2cyclictest20222-21munin-plugin-st10:20:011
948199170,2cyclictest16192-21ntp_offset08:15:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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