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2026-01-10 - 07:52
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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 Sat Jan 10, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
597099220,4cyclictest0-21swapper/219:33:492
596199223,16cyclictest30816-21wc22:45:130
597099213,17cyclictest13433-21sed22:15:012
597099210,3cyclictest0-21swapper/219:21:472
5970992016,3cyclictest0-21swapper/220:01:352
596599209,0cyclictest0-21swapper/122:07:081
596599200,17cyclictest0-21swapper/122:55:061
596199203,2cyclictest14425-21idleruntime20:20:150
5961992016,3cyclictest0-21swapper/019:32:180
5961992015,3cyclictest7505-21dpkg22:05:010
5970991917,1cyclictest0-21swapper/221:30:002
597099190,16cyclictest10105-21latency_hist20:15:012
596599190,17cyclictest16858-21anvil21:25:091
596199192,1cyclictest0-21swapper/022:11:310
596199192,16cyclictest24151-21processes00:25:180
596199192,16cyclictest0-21swapper/023:26:130
5961991913,5cyclictest0-21swapper/021:52:170
597099182,1cyclictest296332sleep220:48:092
597099182,15cyclictest105732sleep200:04:072
5970991816,1cyclictest17555-21expr00:15:122
5970991816,1cyclictest114882sleep221:13:082
5970991816,1cyclictest0-21swapper/219:52:312
5970991815,2cyclictest22784-21timerandwakeup23:25:212
5970991814,3cyclictest12330-21nvmesmart_nvme020:15:192
5970991812,5cyclictest0-21swapper/219:40:182
597099181,16cyclictest0-21swapper/223:06:292
596599182,15cyclictest0-21swapper/123:08:591
5965991816,1cyclictest0-21swapper/121:16:471
5965991816,1cyclictest0-21swapper/121:16:461
596599180,3cyclictest399-20systemd-journal20:29:551
596599180,15cyclictest0-21swapper/123:10:361
596199182,15cyclictest9-21ksoftirqd/000:35:190
596199182,15cyclictest4797-21idleruntime22:55:150
596199182,15cyclictest0-21swapper/022:30:130
5961991816,1cyclictest0-21swapper/020:30:140
5961991815,2cyclictest21853-21chrt19:35:340
5961991815,2cyclictest19274-21latency23:20:160
5961991815,2cyclictest17127-21mailstats23:15:220
596199180,3cyclictest1351-21lxd20:56:480
596199180,17cyclictest27918-21http19:50:010
5970991716,1cyclictest0-21swapper/223:12:012
5970991715,1cyclictest0-21swapper/223:00:212
5970991715,1cyclictest0-21swapper/223:00:212
5970991715,1cyclictest0-21swapper/220:35:202
5970991714,2cyclictest434-21sendmail_mailqu21:50:192
5970991714,2cyclictest32767-21tune2fs23:45:142
5970991714,2cyclictest1648-21fschecks_time22:50:152
5970991714,2cyclictest15216-21cut22:15:162
5970991713,2cyclictest25188-21proc_pri23:30:202
597099171,15cyclictest0-21swapper/200:10:112
597099170,2cyclictest4922-21netstat21:00:182
597099170,2cyclictest3058-21rs:main2
597099170,2cyclictest16374-21/usr/sbin/munin20:25:142
597099170,16cyclictest9015-21date21:10:012
597099170,16cyclictest8664-21fschecks_time22:05:142
597099170,16cyclictest4976-21cpuspeed_turbos22:00:112
597099170,16cyclictest4420-21expr22:55:132
597099170,16cyclictest3985-21H222:10:212
597099170,16cyclictest3707-21master23:55:202
597099170,16cyclictest32077-21tune2fs19:55:152
597099170,16cyclictest3058-21rs:main2
597099170,16cyclictest26136-21fschecks_count19:45:132
597099170,16cyclictest23353-21grep22:30:172
597099170,16cyclictest19182-21cpuspeed_turbos20:30:152
597099170,16cyclictest12464-21ntp_states00:05:182
597099170,16cyclictest1079-21cups-browsed21:40:192
597099170,16cyclictest1035-21thermald23:50:192
597099170,16cyclictest0-21swapper/222:43:092
5965991715,1cyclictest248492sleep100:28:251
5965991715,1cyclictest0-21swapper/120:15:021
5965991714,2cyclictest843-21systemd-network20:15:131
5965991714,2cyclictest426-21systemd-udevd21:43:521
5965991714,2cyclictest32548-21grep21:50:171
5965991714,2cyclictest31680-21missed_timers22:45:171
5965991714,2cyclictest27003-21chrt22:37:081
5965991714,2cyclictest22606-21latency_hist00:25:011
596599171,1cyclictest0-21swapper/123:15:151
596599171,1cyclictest0-21swapper/123:00:191
596599171,1cyclictest0-21swapper/123:00:191
596599170,2cyclictest7134-21sort20:08:591
596599170,2cyclictest3983-21H222:10:211
596599170,2cyclictest27027-21chrt20:44:471
596599170,2cyclictest23683-21http_loadtime21:35:151
596599170,2cyclictest21243-21tr23:25:121
596599170,2cyclictest16064-21awk21:20:171
596599170,2cyclictest1523-21lxd21:10:481
596599170,16cyclictest28971-21needreboot22:40:161
596599170,16cyclictest27675-21grep23:35:161
596599170,16cyclictest25604-21expr00:30:131
596599170,16cyclictest23398-21nfsd422:30:171
596599170,16cyclictest23267-21expr19:40:121
596599170,16cyclictest1829-21systemd-journal19:21:181
596599170,16cyclictest14217-21cpuspeed_turbos22:15:131
596599170,16cyclictest11370-21expr22:10:131
5961991716,1cyclictest9-21ksoftirqd/023:10:310
5961991714,2cyclictest8895-21expr00:00:140
5961991714,2cyclictest3976-21H222:10:210
5961991714,2cyclictest3068-21missed_timers20:00:180
5961991714,2cyclictest26627-21cut00:30:170
5961991714,2cyclictest17042-21apt-key00:15:010
5961991714,2cyclictest15945-21lxd19:42:480
5961991714,2cyclictest1377-21lxd23:54:340
5961991714,2cyclictest13658-21users19:20:190
5961991714,2cyclictest10286-21date20:15:010
5961991714,1cyclictest0-21swapper/023:34:470
5961991714,1cyclictest0-21swapper/022:40:210
596199171,15cyclictest9916-21/usr/sbin/munin23:05:170
596199171,15cyclictest7186-21mailstats23:55:190
596199170,2cyclictest7076-21fschecks_count21:05:130
596199170,2cyclictest5734-21cron19:10:020
596199170,2cyclictest29734-21expr23:40:130
596199170,2cyclictest2131-21munin-run23:49:590
596199170,2cyclictest16996-21chrt21:23:380
596199170,2cyclictest14776-21cut00:10:140
596199170,2cyclictest12663-21systemctl00:05:190
596199170,2cyclictest11097-21chrt19:17:330
596199170,16cyclictest9475-21chrt23:04:380
596199170,16cyclictest9475-21chrt23:04:380
596199170,16cyclictest793-21sed19:55:210
596199170,16cyclictest29815-21nfsd421:45:160
596199170,16cyclictest2282-21nfsd422:50:170
596199170,16cyclictest22461-21grep20:35:140
596199170,16cyclictest20877-21nvmesmart_nvme022:25:170
596199170,16cyclictest17603-21nfsd420:25:180
5970991614,1cyclictest20053-21cpuspeed_turbos00:20:132
5970991614,1cyclictest0-21swapper/222:45:152
5970991614,1cyclictest0-21swapper/221:55:132
5970991614,1cyclictest0-21swapper/221:30:182
5970991614,1cyclictest0-21swapper/219:35:132
5970991613,2cyclictest23468-21cat21:35:132
597099161,15cyclictest4035-21H222:10:212
597099160,2cyclictest17192-21switchtime23:15:222
597099160,1cyclictest0-21swapper/221:23:302
597099160,1cyclictest0-21swapper/220:05:132
597099160,1cyclictest0-21swapper/219:15:202
597099160,1cyclictest0-21swapper/219:10:132
597099160,15cyclictest23622-21cut00:25:152
597099160,15cyclictest0-21swapper/220:50:142
597099160,15cyclictest0-21swapper/220:40:112
597099160,15cyclictest0-21swapper/220:25:002
597099160,15cyclictest0-21swapper/219:25:142
5965991614,1cyclictest6266-21sed21:05:011
5965991614,1cyclictest0-21swapper/123:55:131
5965991614,1cyclictest0-21swapper/123:50:121
5965991614,1cyclictest0-21swapper/123:40:121
5965991614,1cyclictest0-21swapper/123:30:121
5965991614,1cyclictest0-21swapper/122:50:221
5965991614,1cyclictest0-21swapper/122:25:101
5965991614,1cyclictest0-21swapper/122:20:111
5965991614,1cyclictest0-21swapper/121:55:161
5965991614,1cyclictest0-21swapper/120:55:141
5965991614,1cyclictest0-21swapper/120:50:151
5965991614,1cyclictest0-21swapper/120:45:141
5965991614,1cyclictest0-21swapper/119:55:141
5965991614,1cyclictest0-21swapper/100:17:331
5965991614,1cyclictest0-21swapper/100:05:131
5965991614,1cyclictest0-21swapper/100:00:111
5965991613,2cyclictest3550-21wc20:00:211
5965991613,2cyclictest29719-21sed19:50:161
5965991613,2cyclictest1481-21snapd00:35:081
596599161,15cyclictest21-21ksoftirqd/123:45:201
596599160,1cyclictest14173-21cpuspeed_turbos00:10:121
596599160,1cyclictest0-21swapper/123:20:131
596599160,1cyclictest0-21swapper/121:30:131
596599160,1cyclictest0-21swapper/120:31:461
596599160,15cyclictest25520-21/usr/sbin/munin19:45:111
596599160,15cyclictest22467-21fschecks_count20:35:141
596599160,15cyclictest20930-21load19:35:161
596599160,15cyclictest14434-21/usr/sbin/munin19:25:131
596599160,15cyclictest0-21swapper/122:00:121
596599160,15cyclictest0-21swapper/121:45:151
596599160,15cyclictest0-21swapper/121:05:171
596599160,15cyclictest0-21swapper/120:20:141
596599160,15cyclictest0-21swapper/119:15:091
5961991614,1cyclictest29053-21expr19:50:140
5961991614,1cyclictest24894-21/usr/sbin/munin22:35:120
5961991614,1cyclictest0-21swapper/021:55:170
5961991614,1cyclictest0-21swapper/021:40:200
5961991614,1cyclictest0-21swapper/021:25:130
5961991614,1cyclictest0-21swapper/021:00:220
5961991614,1cyclictest0-21swapper/020:50:180
5961991614,1cyclictest0-21swapper/020:45:150
5961991614,1cyclictest0-21swapper/020:05:140
5961991613,2cyclictest24771-21cpu20:40:110
5961991613,2cyclictest16734-21find22:20:100
5961991613,2cyclictest10509-21apt-key20:15:020
596199160,2cyclictest20823-21/usr/sbin/munin00:20:150
596199160,16cyclictest16277-21timerwakeupswit19:25:220
596199160,15cyclictest15561-21tr22:15:190
596199160,15cyclictest12631-21/usr/sbin/munin21:15:130
596199160,15cyclictest12631-21/usr/sbin/munin21:15:120
596199160,15cyclictest0-21swapper/023:35:120
596199160,15cyclictest0-21swapper/022:05:140
596199160,15cyclictest0-21swapper/021:35:200
596199160,15cyclictest0-21swapper/021:10:170
5970991514,1cyclictest0-21swapper/220:55:132
5970991513,1cyclictest0-21swapper/200:35:122
5970991512,2cyclictest26010-21missed_timers22:35:172
597099150,1cyclictest0-21swapper/222:20:132
597099150,1cyclictest0-21swapper/221:15:132
597099150,1cyclictest0-21swapper/221:15:122
597099150,14cyclictest0-21swapper/200:30:132
5965991513,1cyclictest0-21swapper/119:10:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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