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2026-07-03 - 05:08
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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 Fri Jul 03, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1827399230,5cyclictest0-21swapper/222:41:592
1826899230,22cyclictest870-21systemd-logind19:28:520
1827399225,13cyclictest0-21swapper/220:40:232
1826899220,18cyclictest0-21swapper/022:12:580
1827399210,3cyclictest0-21swapper/200:37:082
1827399210,18cyclictest0-21swapper/222:52:412
1826999213,11cyclictest22539-21munin-run20:15:011
1826999212,18cyclictest0-21swapper/100:00:001
1826999210,3cyclictest0-21swapper/122:55:121
1827399202,10cyclictest0-21swapper/220:10:212
1826999204,15cyclictest0-21swapper/120:26:471
1826999204,15cyclictest0-21swapper/100:05:201
1827399192,2cyclictest10006-21timerandwakeup20:45:212
1827399192,16cyclictest24695-21nfsd400:05:182
1827399192,15cyclictest0-21swapper/223:05:132
1827399190,3cyclictest1515-21lxd00:04:352
1826999195,13cyclictest0-21swapper/121:45:321
18269991919,0cyclictest0-21swapper/119:20:161
18269991917,1cyclictest0-21swapper/123:35:321
1826999190,4cyclictest426-21systemd-udevd20:41:521
1826999190,4cyclictest31895-21ls23:20:221
1826999190,1cyclictest0-21swapper/121:10:291
18268991917,1cyclictest0-21swapper/021:20:190
18268991916,2cyclictest20296-21turbostat00:00:000
18268991915,3cyclictest13138-21master22:48:350
1827399182,15cyclictest28-21ksoftirqd/219:30:212
1827399182,15cyclictest11387-21expr22:45:142
18273991816,1cyclictest0-21swapper/223:25:192
18273991816,1cyclictest0-21swapper/223:25:182
18273991815,2cyclictest13463-21uname21:50:172
18273991814,3cyclictest2733-21lsb_release21:30:522
1827399181,16cyclictest1035-21thermald21:20:222
1827399180,3cyclictest15892-21snapd21:35:282
1827399180,3cyclictest14500-21snapd19:50:202
1827399180,2cyclictest20453-21sed22:05:012
1827399180,17cyclictest11907-21tr19:55:132
1827399180,15cyclictest0-21swapper/221:00:142
18269991818,0cyclictest0-21swapper/121:20:171
18269991816,1cyclictest28156-21grep23:15:151
18269991816,1cyclictest0-21swapper/123:40:131
18269991816,1cyclictest0-21swapper/120:05:011
18269991815,2cyclictest22882-21latency23:05:161
18269991815,2cyclictest13063-21expr21:50:141
18269991814,3cyclictest0-21swapper/122:08:341
18269991814,1cyclictest0-21swapper/123:30:151
1826999181,2cyclictest29459-21cat00:15:131
1826999181,2cyclictest29459-21cat00:15:131
1826999181,2cyclictest15618-21timerwakeupswit22:50:221
1826999181,16cyclictest6567-21cut21:40:001
1826999181,16cyclictest23529-21expr20:15:121
1826999181,16cyclictest17392-21expr20:05:131
1826999180,17cyclictest12313-21ntp_kernel_err20:50:171
1826999180,16cyclictest0-21swapper/123:45:201
1826899184,9cyclictest0-21swapper/000:06:110
1826899183,1cyclictest0-21swapper/022:59:270
18268991818,0cyclictest0-21swapper/020:30:320
18268991816,1cyclictest29661-21expr00:15:140
18268991816,1cyclictest29661-21expr00:15:140
1826899181,15cyclictest0-21swapper/023:50:200
1826899180,1cyclictest0-21swapper/022:00:570
1827399172,1cyclictest80502sleep219:48:322
18273991716,1cyclictest28-21ksoftirqd/223:00:082
18273991714,2cyclictest849-21latency19:35:172
18273991714,2cyclictest5601-21lxd22:22:492
18273991714,2cyclictest3639-21/usr/sbin/munin23:30:142
18273991714,2cyclictest30554-21cat00:15:202
18273991714,2cyclictest30554-21cat00:15:192
18273991714,2cyclictest26887-21if_lxdbr020:20:172
18273991714,2cyclictest23733-21cpuspeed_turbos22:10:112
18273991714,2cyclictest19513-21sessionclean20:09:002
18273991714,2cyclictest15032-21cpuspeed_turbos23:50:142
18273991714,2cyclictest14506-21snapd20:15:292
18273991714,2cyclictest14304-21fschecks_count20:55:142
1827399171,1cyclictest7602-21needreboot23:35:172
1827399171,1cyclictest0-21swapper/222:15:162
1827399171,15cyclictest3180-21cat22:30:152
1827399171,15cyclictest0-21swapper/220:00:132
1827399170,2cyclictest5689-21cstates00:30:142
1827399170,2cyclictest399-20systemd-journal19:20:012
1827399170,2cyclictest3991-21H222:10:212
1827399170,2cyclictest2362-21apache_processe00:25:152
1827399170,2cyclictest15285-21apache_processe21:55:112
1827399170,2cyclictest10623-21nfsd421:45:172
1827399170,1cyclictest0-21swapper/223:24:202
1827399170,1cyclictest0-21swapper/222:58:492
1827399170,16cyclictest6981-21expr21:40:142
1827399170,16cyclictest3985-21H222:10:212
1827399170,16cyclictest27435-21grep21:20:012
1827399170,16cyclictest25441-21ntp_offset19:20:192
1827399170,16cyclictest24187-21taskset21:12:492
1827399170,16cyclictest19799-21timerwakeupswit23:55:222
1827399170,16cyclictest12321-21ntpq20:50:192
1827399170,16cyclictest1102-21pzem_voltage00:20:212
1827399170,16cyclictest0-21swapper/219:14:152
18269991717,0cyclictest0-21swapper/119:35:151
18269991715,1cyclictest11342-21expr22:45:141
18269991714,2cyclictest8999-21munin-run21:45:001
18269991714,2cyclictest455-21plymouthd21:55:131
18269991714,2cyclictest32161-21http_loadtime20:30:161
18269991714,2cyclictest29605-21cstates22:20:151
18269991714,2cyclictest15204-21processes20:55:211
18269991714,2cyclictest1421-21idleruntime21:30:181
18269991714,2cyclictest1385-21timerandwakeup00:20:231
18269991714,2cyclictest0-21swapper/100:25:211
18269991713,3cyclictest3076-21iscsid19:30:011
1826999171,15cyclictest9240-21cat00:35:161
1826999171,15cyclictest27040-21forks00:10:131
1826999170,2cyclictest31856-21grep22:25:121
1826999170,2cyclictest1334-21tune2fs23:25:151
1826999170,2cyclictest1334-21tune2fs23:25:151
1826999170,1cyclictest0-21swapper/119:40:171
1826999170,16cyclictest9682-21cat19:50:171
1826999170,16cyclictest8459-21cut22:40:131
1826999170,16cyclictest5403-21apache_processe00:30:121
1826999170,16cyclictest5375-21cpuspeed_turbos22:35:121
1826999170,16cyclictest455-21plymouthd21:25:131
1826999170,16cyclictest26782-21expr22:15:141
1826999170,16cyclictest26481-21cstates20:20:161
1826999170,16cyclictest26359-21mailstats21:15:221
1826999170,16cyclictest2611-21expr22:30:131
1826999170,16cyclictest25174-21cat23:10:111
1826999170,16cyclictest21602-21sed23:05:001
1826999170,16cyclictest20959-21tr00:00:131
1826999170,16cyclictest18901-21expr19:10:151
1826999170,16cyclictest18386-21expr22:00:141
1826999170,16cyclictest16860-21cstates21:00:141
1826999170,16cyclictest12887-21tr19:55:171
1826899172,14cyclictest0-21swapper/021:55:210
18268991716,1cyclictest9-21ksoftirqd/000:35:040
18268991715,1cyclictest0-21swapper/022:30:110
18268991715,1cyclictest0-21swapper/021:45:190
18268991715,1cyclictest0-21swapper/021:35:160
18268991715,1cyclictest0-21swapper/020:50:130
18268991715,1cyclictest0-21swapper/020:20:150
18268991715,1cyclictest0-21swapper/020:05:150
18268991714,2cyclictest9807-21nfsd419:50:190
18268991714,2cyclictest9365-21apache_volume23:40:110
18268991714,2cyclictest7598-21irqstats21:40:170
18268991714,2cyclictest31739-21chrt19:34:280
18268991714,2cyclictest2975-21cstates00:25:180
18268991714,2cyclictest14485-21apache_processe20:00:120
18268991714,2cyclictest1114-21lldpd19:18:110
18268991713,3cyclictest843-21systemd-network23:45:130
18268991713,2cyclictest0-21swapper/023:15:150
1826899171,15cyclictest22785-21taskset00:02:020
1826899171,15cyclictest20593-21smartctl21:05:200
1826899171,15cyclictest0-21swapper/023:30:150
1826899171,15cyclictest0-21swapper/019:35:180
1826899170,2cyclictest7492-21python320:45:020
1826899170,2cyclictest4479-21cron20:39:000
1826899170,2cyclictest3985-21H222:10:210
1826899170,2cyclictest32338-21taskset23:22:150
1826899170,2cyclictest31845-21apache_volume22:25:120
1826899170,2cyclictest31442-21grep21:25:170
1826899170,2cyclictest22726-21taskset22:05:410
1826899170,2cyclictest22678-21grep21:10:140
1826899170,16cyclictest5902-21df_inode22:35:130
1826899170,16cyclictest399-20systemd-journal20:30:010
1826899170,16cyclictest32501-21df00:20:140
1826899170,16cyclictest20384-21nfsd423:00:230
1826899170,16cyclictest2007-21systemd-journal21:04:040
1826899170,16cyclictest15094-21ntp_states22:50:190
1826899170,16cyclictest13042-21nfsd419:55:170
1826899170,16cyclictest12597-21apache219:45:120
1826899170,16cyclictest10627-21sed22:45:000
1826899170,16cyclictest0-21swapper/023:05:060
18273991614,1cyclictest0-21swapper/223:40:102
18273991614,1cyclictest0-21swapper/223:15:082
18273991614,1cyclictest0-21swapper/220:30:132
18273991614,1cyclictest0-21swapper/220:25:092
18273991614,1cyclictest0-21swapper/219:25:142
18273991614,1cyclictest0-21swapper/200:10:132
1827399160,2cyclictest21981-21latency_hist21:10:022
1827399160,1cyclictest0-21swapper/223:45:132
1827399160,1cyclictest0-21swapper/220:35:162
1827399160,15cyclictest5323-21apt-get22:35:112
1827399160,15cyclictest30614-21expr21:25:142
1827399160,15cyclictest0-21swapper/222:25:132
1827399160,15cyclictest0-21swapper/222:05:122
18269991614,1cyclictest6528-21fschecks_time19:45:161
18269991614,1cyclictest0-21swapper/123:50:111
18269991614,1cyclictest0-21swapper/122:10:121
1826999160,1cyclictest0-21swapper/119:15:151
1826999160,15cyclictest3450-21gsd-color20:45:021
1826999160,15cyclictest29869-21expr19:30:131
1826999160,15cyclictest0-21swapper/120:35:171
18268991614,1cyclictest0-21swapper/023:10:120
18268991614,1cyclictest0-21swapper/022:20:200
18268991614,1cyclictest0-21swapper/021:30:140
18268991614,1cyclictest0-21swapper/020:45:110
18268991614,1cyclictest0-21swapper/019:43:380
18268991614,1cyclictest0-21swapper/019:10:060
1826899160,2cyclictest7706-21apt00:34:590
1826899160,1cyclictest27998-21sendmail_mailst00:10:210
1826899160,1cyclictest25555-21processes19:20:200
1826899160,1cyclictest0-21swapper/023:35:120
1826899160,1cyclictest0-21swapper/023:25:120
1826899160,1cyclictest0-21swapper/023:25:120
1826899160,15cyclictest20693-21df20:10:130
1826899160,15cyclictest11718-21apt-get21:50:020
1826899160,15cyclictest0-21swapper/022:15:180
1826899160,15cyclictest0-21swapper/020:55:130
1826899160,15cyclictest0-21swapper/020:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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