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2026-07-11 - 07:06
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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 Jul 11, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13071992613,12cyclictest0-21swapper/020:45:160
13080992424,0cyclictest0-21swapper/220:55:162
13080992424,0cyclictest0-21swapper/220:55:162
1307599240,19cyclictest0-21swapper/121:45:171
1308099230,5cyclictest0-21swapper/219:37:342
1308099230,22cyclictest0-21swapper/223:56:362
1308099210,20cyclictest843-21systemd-network22:47:552
1307599216,13cyclictest0-21swapper/123:25:191
1307199210,20cyclictest843-21systemd-network00:04:070
13080992017,2cyclictest25810-21grep00:15:142
1307199204,9cyclictest0-21swapper/021:05:180
1307199202,17cyclictest0-21swapper/021:30:010
13080991917,1cyclictest0-21swapper/220:30:452
13080991917,1cyclictest0-21swapper/220:30:442
1308099190,18cyclictest19176-21tr00:05:142
1307599193,15cyclictest21792-21expr19:25:141
1307599192,2cyclictest5428-21cut00:35:181
1307599192,16cyclictest14550-21snapd20:37:571
13075991916,2cyclictest26931-21gpgv20:30:011
13075991916,2cyclictest26931-21gpgv20:30:011
1307599191,17cyclictest13880-21proc_pri20:05:211
1307599190,1cyclictest0-21swapper/121:52:531
1307599190,17cyclictest19327-21nfsd420:15:171
1307199193,1cyclictest0-21swapper/020:26:510
1307199192,2cyclictest30431-21grep20:35:150
1307199192,2cyclictest14605-21cat22:00:220
1307199192,16cyclictest11913-21expr22:55:130
13071991919,0cyclictest0-21swapper/022:35:150
13071991916,2cyclictest340-21cat19:45:010
13071991916,1cyclictest0-21swapper/022:05:020
13071991915,3cyclictest22199-21grep20:20:190
13071991913,4cyclictest0-21swapper/021:45:010
1307199190,3cyclictest0-21swapper/000:35:000
1307199190,18cyclictest0-21swapper/022:21:510
1308099182,15cyclictest0-21swapper/220:45:162
13080991816,1cyclictest0-21swapper/223:42:182
13080991816,1cyclictest0-21swapper/223:30:132
13080991816,1cyclictest0-21swapper/222:25:182
13080991815,2cyclictest22992-21cat23:15:142
13080991815,2cyclictest20227-21cat23:10:132
13080991815,2cyclictest11671-21cupsd21:19:162
13080991814,3cyclictest0-21swapper/200:05:002
1308099181,16cyclictest3238-21systemctl21:40:202
1308099181,16cyclictest13276-21expr22:00:142
1308099181,15cyclictest0-21swapper/219:14:042
1308099180,17cyclictest1526-21lxd19:28:502
1308099180,16cyclictest0-21swapper/222:40:182
1307599182,15cyclictest1720-21expr23:35:131
1307599182,15cyclictest0-21swapper/122:39:061
13075991816,1cyclictest26264-21taskset19:30:491
13075991815,2cyclictest0-21swapper/123:55:181
13075991814,3cyclictest0-21swapper/123:20:181
1307599180,17cyclictest17708-21fschecks_time23:05:141
1307599180,16cyclictest6266-21cpuspeed_turbos22:45:141
1307599180,16cyclictest30227-21anvil23:30:361
1307199182,15cyclictest279682sleep022:25:160
1307199182,15cyclictest0-21swapper/022:30:140
13071991816,1cyclictest29478-21latency_hist19:40:010
13071991816,1cyclictest27908-21date23:25:010
13071991816,1cyclictest21534-21cut19:25:020
13071991816,1cyclictest14904-21latency_hist20:10:010
13071991816,1cyclictest0-21swapper/023:25:120
13071991815,2cyclictest7174-21sed21:50:000
13071991815,2cyclictest592-21chrt21:37:350
13071991815,2cyclictest10615-21fschecks_count21:55:140
13071991814,3cyclictest0-21swapper/000:29:330
13071991814,3cyclictest0-21swapper/000:10:110
1307199181,16cyclictest0-21swapper/023:15:490
1307199180,3cyclictest30464-21chrt21:34:530
1307199180,17cyclictest31350-21cstates23:30:130
1307199180,17cyclictest0-21swapper/023:35:190
1307199180,14cyclictest0-21swapper/021:50:180
13080991715,1cyclictest26282-21/usr/sbin/munin21:25:172
13080991715,1cyclictest24206-21timerandwakeup00:10:202
13080991715,1cyclictest0-21swapper/223:00:012
13080991715,1cyclictest0-21swapper/222:05:172
13080991715,1cyclictest0-21swapper/221:35:132
13080991714,2cyclictest8652-21awk21:50:152
13080991714,2cyclictest3026-21postgres21:30:032
1308099171,15cyclictest0-21swapper/219:45:012
1308099170,2cyclictest9242-21sendmail20:00:012
1308099170,2cyclictest8878-21cut23:45:182
1308099170,2cyclictest3707-21master23:35:562
1308099170,2cyclictest3182-21apt-get19:50:022
1308099170,2cyclictest24034-21cpuspeed_turbos20:25:132
1308099170,2cyclictest21273-21expr20:20:132
1308099170,2cyclictest18465-21nvmesmart_nvme023:05:182
1308099170,2cyclictest15328-21/usr/sbin/munin20:10:162
1308099170,2cyclictest13481-21cat20:05:172
1308099170,16cyclictest690-21fschecks_time22:35:142
1308099170,16cyclictest6774-21chrt21:48:502
1308099170,16cyclictest6475-21find00:38:582
1308099170,16cyclictest30451-21sed22:30:172
1308099170,16cyclictest29182-21memory23:25:152
1308099170,16cyclictest29171-21nfsd400:20:182
1308099170,16cyclictest26122-21timerwakeupswit19:30:232
1308099170,16cyclictest2357-21grep00:30:182
1308099170,16cyclictest23133-21taskset22:16:202
1308099170,16cyclictest18949-21irqstats20:15:162
1308099170,16cyclictest18214-21latency21:10:162
1308099170,16cyclictest12102-21cat23:50:212
1308099170,16cyclictest1026-21http_loadtime20:40:172
1308099170,16cyclictest0-21swapper/223:20:212
13075991715,1cyclictest29102-21needreboot00:20:161
13075991715,1cyclictest20801-21apt-get20:20:131
13075991715,1cyclictest0-21swapper/122:50:141
13075991714,2cyclictest4962-21idleruntime19:50:141
13075991714,2cyclictest3987-21H222:10:211
13075991714,2cyclictest31695-21date22:34:591
13075991714,2cyclictest25476-21cat00:15:141
13075991714,2cyclictest19135-21cpuspeed_turbos00:05:131
13075991714,2cyclictest18001-21awk21:10:141
13075991714,2cyclictest17238-21awk00:00:171
13075991714,2cyclictest13344-21expr22:00:141
13075991714,2cyclictest11892-21cstates22:55:131
13075991714,2cyclictest10010-21apache_accesses21:55:091
1307599171,1cyclictest11079-21sh23:50:151
1307599171,15cyclictest56372chrt20:48:501
1307599171,15cyclictest2081-21nfsd419:45:201
1307599170,3cyclictest0-21swapper/100:30:181
1307599170,2cyclictest24187-21cstates20:25:131
1307599170,2cyclictest15327-21apache_volume20:10:151
1307599170,16cyclictest9925-21memory20:55:171
1307599170,16cyclictest9925-21memory20:55:161
1307599170,16cyclictest7631-21/usr/sbin/munin23:45:171
1307599170,16cyclictest6330-21grep20:50:121
1307599170,16cyclictest28334-21ls22:25:191
1307599170,16cyclictest23359-21perl23:15:151
1307599170,16cyclictest23319-21df_inode21:20:141
1307599170,16cyclictest22570-21cpuspeed_turbos00:10:111
1307599170,16cyclictest21372-21ls22:15:131
1307599170,16cyclictest18523-21cpuspeed_turbos22:10:121
1307599170,16cyclictest17658-21systemctl19:15:211
1307599170,16cyclictest14967-21df_inode21:05:131
1307599170,16cyclictest0-21swapper/120:00:001
13071991715,1cyclictest0-21swapper/022:15:200
13071991715,1cyclictest0-21swapper/021:10:140
13071991715,1cyclictest0-21swapper/020:30:140
13071991715,1cyclictest0-21swapper/020:30:130
13071991715,1cyclictest0-21swapper/020:10:230
13071991715,1cyclictest0-21swapper/000:20:130
13071991714,2cyclictest9317-21cstates22:50:140
13071991714,2cyclictest8338-21cut23:45:140
13071991714,2cyclictest6553-21cat22:45:140
13071991714,2cyclictest6522-21cstates20:50:130
13071991714,2cyclictest538-21apt-config19:45:020
13071991714,2cyclictest4198-21find00:35:100
13071991714,2cyclictest26597-21ntp_states00:15:190
13071991714,2cyclictest23057-21cstates21:20:130
13071991714,2cyclictest21903-21cat19:25:140
13071991714,2cyclictest18406-21/usr/sbin/munin22:10:120
13071991714,2cyclictest17926-21if_lxdbr023:05:160
13071991714,2cyclictest14305-21apache_accesses23:00:110
13071991714,2cyclictest13077-21chrt23:55:020
13071991714,2cyclictest10374-21apache_processe23:50:100
13071991714,2cyclictest0-21swapper/020:55:120
13071991714,2cyclictest0-21swapper/020:55:110
13071991714,1cyclictest0-21swapper/020:40:190
1307199171,15cyclictest17569-21processes19:15:200
1307199170,2cyclictest6914-21/usr/sbin/munin19:55:190
1307199170,2cyclictest5276-21expr23:40:140
1307199170,2cyclictest3661-21cat22:40:130
1307199170,2cyclictest18187-21grep20:15:120
1307199170,2cyclictest13245-21grep21:00:220
1307199170,2cyclictest10043-21cat20:00:130
1307199170,16cyclictest4049-21chrt19:50:020
1307199170,16cyclictest25508-21awk19:30:190
1307199170,16cyclictest20280-21cstates23:10:130
1307199170,16cyclictest19954-21date21:15:000
1307199170,16cyclictest18190-21apt-get00:05:020
1307199170,16cyclictest14474-21sed19:10:160
13080991614,1cyclictest0-21swapper/221:55:132
13080991614,1cyclictest0-21swapper/221:20:142
13080991614,1cyclictest0-21swapper/220:00:182
13080991614,1cyclictest0-21swapper/200:25:172
1308099160,15cyclictest3207-21JS22:10:212
1308099160,15cyclictest29779-21apt-get20:35:112
1308099160,15cyclictest2069-21systemd-udevd19:40:522
1308099160,15cyclictest19705-21/usr/sbin/munin19:20:172
1308099160,15cyclictest10383-21expr22:50:222
1308099160,15cyclictest0-21swapper/223:00:182
1308099160,15cyclictest0-21swapper/221:05:162
1308099160,15cyclictest0-21swapper/220:50:132
1308099160,15cyclictest0-21swapper/219:15:162
13075991614,1cyclictest4936-21apt-get23:40:131
13075991614,1cyclictest19549-21perl19:20:151
13075991614,1cyclictest0-21swapper/121:25:171
13075991614,1cyclictest0-21swapper/121:00:171
13075991614,1cyclictest0-21swapper/120:40:191
13075991614,1cyclictest0-21swapper/120:00:131
13075991614,1cyclictest0-21swapper/119:40:121
13075991613,2cyclictest21819-21wc21:15:231
13075991613,2cyclictest20912-21sed23:10:161
1307599160,1cyclictest352-21jbd2/nvme0n1p2-19:10:061
1307599160,1cyclictest0-21swapper/121:40:121
1307599160,1cyclictest0-21swapper/121:35:161
1307599160,15cyclictest3149-21/usr/sbin/munin22:40:131
1307599160,15cyclictest25094-21expr22:20:181
1307599160,15cyclictest0-21swapper/123:00:121
1308099150,1cyclictest0-21swapper/222:20:142
1307599150,14cyclictest0-21swapper/121:30:241
1307599150,0cyclictest0-21swapper/122:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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