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2026-04-24 - 07:22
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Fri Apr 24, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13604992410,1cyclictest0-21swapper/023:55:170
1360499220,4cyclictest0-21swapper/021:14:020
1361399210,3cyclictest0-21swapper/200:40:012
13613991914,4cyclictest0-21swapper/220:00:162
13613991914,2cyclictest2005-21fschecks_time00:30:142
1361399190,17cyclictest4035-21H222:10:212
1360899192,1cyclictest0-21swapper/120:36:071
1360899192,16cyclictest32502-21wc20:40:131
1360499193,15cyclictest0-21swapper/020:46:400
13604991917,1cyclictest0-21swapper/020:32:380
13604991917,1cyclictest0-21swapper/020:00:130
1360499190,18cyclictest843-21systemd-network00:07:080
1360499190,18cyclictest0-21swapper/022:05:120
13613991816,1cyclictest0-21swapper/223:44:222
13613991816,1cyclictest0-21swapper/220:11:502
1361399181,16cyclictest28912-21nfsd422:25:182
1361399180,3cyclictest0-21swapper/220:27:592
1361399180,1cyclictest0-21swapper/221:01:302
1361399180,17cyclictest843-21systemd-network20:19:402
1361399180,17cyclictest27263-21apt-key22:25:012
1361399180,17cyclictest0-21swapper/221:45:522
1361399180,15cyclictest0-21swapper/222:15:162
13608991816,1cyclictest6502-21cat20:50:161
13608991816,1cyclictest0-21swapper/119:27:431
13608991815,2cyclictest5001-21kernelversion22:40:171
13608991815,2cyclictest18119-21cut20:15:011
1360899181,2cyclictest3093-21tr23:35:141
1360899181,2cyclictest3093-21tr23:35:141
1360899181,16cyclictest13503-21chrt23:51:211
1360899180,3cyclictest399-20systemd-journal00:20:431
1360499182,1cyclictest0-21swapper/023:46:520
13604991814,2cyclictest26896-21basename22:25:000
1360499181,2cyclictest2277-21grep21:40:140
1360499180,17cyclictest0-21swapper/000:10:120
13613991715,1cyclictest128802sleep221:58:222
13613991715,1cyclictest0-21swapper/220:10:012
13613991715,1cyclictest0-21swapper/219:21:032
13613991714,2cyclictest9265-21cat20:00:012
13613991714,2cyclictest910-21cpuspeed_turbos19:45:132
13613991714,2cyclictest6386-21munin-run22:45:002
13613991714,2cyclictest31945-21proc_pri19:40:202
13613991714,2cyclictest31945-21proc_pri19:40:202
13613991714,2cyclictest30276-21cat19:40:012
13613991714,2cyclictest26448-21systemctl19:30:202
13613991714,2cyclictest1515-21lxd20:48:482
13613991714,2cyclictest1351-21lxd00:28:342
13613991714,1cyclictest0-21swapper/220:50:032
13613991712,2cyclictest3681-21fschecks_count23:35:152
13613991712,2cyclictest3681-21fschecks_count23:35:152
1361399170,2cyclictest9846-21cut20:55:152
1361399170,2cyclictest2739-21timerwakeupswit22:35:222
1361399170,2cyclictest22601-21expr19:25:142
1361399170,2cyclictest20737-21cat21:15:142
1361399170,2cyclictest14496-21snapd22:30:282
1361399170,2cyclictest11628-21tr23:50:132
1361399170,1cyclictest0-21swapper/220:40:012
1361399170,16cyclictest864-21nfsd423:30:182
1361399170,16cyclictest5329-21ntp_kernel_pll_19:50:182
1361399170,16cyclictest3989-21H222:10:212
1361399170,16cyclictest3337-21sort21:40:182
1361399170,16cyclictest32327-21http_loadtime21:35:162
1361399170,16cyclictest29640-21expr23:25:122
1361399170,16cyclictest26976-21cpuspeed_turbos20:30:132
1361399170,16cyclictest26877-21http_loadtime21:25:172
1361399170,16cyclictest26877-21http_loadtime21:25:172
1361399170,16cyclictest23997-21date20:25:012
1361399170,16cyclictest20739-21tr23:10:142
1361399170,16cyclictest20739-21tr23:10:132
1361399170,16cyclictest2007-21systemd-journal23:19:232
1361399170,16cyclictest16793-21df22:05:132
1361399170,16cyclictest16719-21cpuspeed_turbos19:15:142
1361399170,16cyclictest11054-21pzem_power22:50:182
13608991716,1cyclictest5164-21cut19:50:181
13608991715,1cyclictest18034-21timerwakeupswit22:05:211
13608991715,1cyclictest0-21swapper/120:30:151
13608991714,2cyclictest4099-21H222:10:211
13608991714,2cyclictest3981-21H222:10:211
13608991714,2cyclictest32593-21sed00:25:211
13608991714,2cyclictest31801-21munin-run23:30:001
13608991714,2cyclictest28615-21sed21:30:011
13608991714,2cyclictest28615-21sed21:30:011
13608991714,2cyclictest28222-21expr22:25:141
13608991714,2cyclictest2693-21expr21:40:141
13608991714,2cyclictest26786-21fschecks_time23:20:141
13608991714,2cyclictest25962-21ntp_offset22:20:191
13608991714,2cyclictest24118-21find20:25:121
13608991714,2cyclictest23001-21expr00:10:131
13608991714,2cyclictest1829-21systemd-journal20:01:111
13608991714,2cyclictest1523-21lxd00:00:331
13608991714,2cyclictest1377-21lxd23:46:341
13608991713,3cyclictest0-21swapper/122:45:191
13608991713,3cyclictest0-21swapper/122:45:191
1360899171,15cyclictest269532sleep119:32:201
1360899170,2cyclictest22953-21perf23:15:001
1360899170,2cyclictest22953-21perf23:15:001
1360899170,2cyclictest1100-21snmpd20:15:171
1360899170,16cyclictest7846-21sed19:55:171
1360899170,16cyclictest6428-21needreboot21:45:181
1360899170,16cyclictest5926-21sendmail_mailqu00:35:221
1360899170,16cyclictest28168-21df19:35:151
1360899170,16cyclictest25889-21expr00:15:121
1360899170,16cyclictest21380-21cron22:19:541
1360899170,16cyclictest20933-21cut00:05:171
1360899170,16cyclictest18241-21cut19:15:211
1360899170,16cyclictest16998-21anacron23:00:491
1360899170,16cyclictest15724-21sed19:10:211
1360899170,16cyclictest14545-21snapd22:02:581
1360899170,16cyclictest13113-21nfsd421:00:181
1360899170,16cyclictest13089-21cat22:55:171
1360899170,16cyclictest1272-21expr22:35:141
1360899170,16cyclictest1085-21gdbus20:05:211
1360899170,16cyclictest10486-21cut20:55:181
1360899170,16cyclictest10404-21cat21:55:011
1360499172,1cyclictest0-21swapper/021:35:170
13604991715,1cyclictest0-21swapper/023:04:520
13604991714,2cyclictest28045-21latency_hist00:20:000
13604991714,2cyclictest22254-21mailstats21:15:210
13604991714,2cyclictest21231-21sed19:20:190
13604991714,2cyclictest20407-21cat23:10:000
13604991714,2cyclictest17546-21perf21:10:010
13604991714,2cyclictest1582-21ls00:30:140
13604991714,2cyclictest13906-21sed22:55:230
1360499171,15cyclictest31357-21chrt23:27:340
1360499171,15cyclictest0-21swapper/000:35:170
1360499170,2cyclictest7780-21grep20:50:210
1360499170,2cyclictest2872-21systemd-logind19:50:520
1360499170,2cyclictest24538-21grep23:15:170
1360499170,2cyclictest20765-21/usr/sbin/munin22:10:230
1360499170,16cyclictest5179-21sshd23:36:470
1360499170,16cyclictest5179-21sshd23:36:460
1360499170,16cyclictest28016-21expr19:35:140
1360499170,16cyclictest1829-21systemd-journal22:15:010
1360499170,16cyclictest17208-21cut00:00:140
1360499170,16cyclictest1377-21lxd23:14:340
1360499170,16cyclictest1377-21lxd23:14:340
1360499170,16cyclictest11510-21awk21:00:010
1360499170,16cyclictest10151-21lxd00:20:340
13613991614,1cyclictest1375-21munin-node22:45:122
13613991614,1cyclictest1375-21munin-node22:45:122
13613991614,1cyclictest10306-21perf21:54:592
13613991614,1cyclictest0-21swapper/223:05:212
13613991614,1cyclictest0-21swapper/221:30:152
13613991614,1cyclictest0-21swapper/200:20:142
13613991614,1cyclictest0-21swapper/200:10:022
13613991613,2cyclictest9906-21grep23:45:152
13613991613,2cyclictest16285-21nfsd421:05:182
1361399160,1cyclictest20721-21switchtime22:10:222
1361399160,1cyclictest164952chrt23:59:382
1361399160,15cyclictest27758-21perf00:20:002
1361399160,15cyclictest17924-21/usr/sbin/munin21:10:122
1361399160,15cyclictest16403-21ntpq23:00:172
1361399160,15cyclictest12858-21fschecks_count22:55:152
1361399160,15cyclictest0-21swapper/222:00:142
1361399160,15cyclictest0-21swapper/220:40:152
1361399160,15cyclictest0-21swapper/200:05:132
1361399160,15cyclictest0-21swapper/200:00:162
13608991614,1cyclictest20565-21apt-get20:20:021
13608991614,1cyclictest18274-21expr21:10:141
13608991614,1cyclictest1260-21/usr/sbin/munin00:30:211
13608991614,1cyclictest0-21swapper/123:55:131
13608991614,1cyclictest0-21swapper/123:40:171
13608991614,1cyclictest0-21swapper/123:05:161
13608991614,1cyclictest0-21swapper/122:30:131
13608991614,1cyclictest0-21swapper/122:10:141
13608991614,1cyclictest0-21swapper/121:30:171
13608991614,1cyclictest0-21swapper/121:05:131
13608991614,1cyclictest0-21swapper/120:45:141
13608991614,1cyclictest0-21swapper/119:45:151
1360899160,2cyclictest32378-21expr23:30:131
1360899160,15cyclictest30496-21apt-get19:40:121
1360899160,15cyclictest30496-21apt-get19:40:121
1360899160,15cyclictest0-21swapper/121:55:151
1360899160,15cyclictest0-21swapper/121:35:141
1360899160,15cyclictest0-21swapper/121:15:221
1360899160,14cyclictest0-21swapper/122:50:031
13604991614,1cyclictest6029-21apache_processe23:40:110
13604991614,1cyclictest24134-21which21:20:150
13604991614,1cyclictest0-21swapper/023:50:150
13604991614,1cyclictest0-21swapper/023:20:120
13604991614,1cyclictest0-21swapper/022:50:120
13604991614,1cyclictest0-21swapper/022:40:130
13604991614,1cyclictest0-21swapper/021:55:170
13604991614,1cyclictest0-21swapper/021:50:170
13604991614,1cyclictest0-21swapper/021:45:170
13604991614,1cyclictest0-21swapper/020:44:410
13604991614,1cyclictest0-21swapper/020:10:170
13604991614,1cyclictest0-21swapper/020:05:130
13604991614,1cyclictest0-21swapper/019:45:130
13604991614,1cyclictest0-21swapper/019:40:110
13604991614,1cyclictest0-21swapper/019:40:110
13604991614,1cyclictest0-21swapper/000:25:220
13604991613,2cyclictest29516-21fschecks_count21:30:160
1360499160,2cyclictest27750-21mailstats21:25:220
1360499160,2cyclictest27750-21mailstats21:25:210
1360499160,2cyclictest26116-21cut19:30:160
1360499160,15cyclictest455-21plymouthd22:32:430
1360499160,15cyclictest29558-21/usr/sbin/munin20:35:130
1360499160,15cyclictest28539-21cat22:25:160
1360499160,15cyclictest213822chrt20:20:090
1360499160,15cyclictest19974-21grep20:15:210
1360499160,15cyclictest14347-21if_lxdbr022:00:150
1360499160,15cyclictest13895-21/usr/sbin/munin19:10:110
1360499160,15cyclictest1298-21expr22:35:140
1360499160,15cyclictest0-21swapper/022:45:450
1360499160,15cyclictest0-21swapper/022:45:450
1360499160,15cyclictest0-21swapper/021:00:130
1360499160,15cyclictest0-21swapper/020:25:180
1360499160,15cyclictest0-21swapper/019:55:120
1360499160,15cyclictest0-21swapper/019:25:140
1360499160,15cyclictest0-21swapper/019:15:130
1361399150,0cyclictest0-21swapper/219:10:082
1360899150,1cyclictest0-21swapper/119:20:121
13604991513,1cyclictest0-21swapper/023:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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