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2026-05-06 - 11:46
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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 Wed May 06, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9182992514,1cyclictest0-21swapper/121:13:161
918299230,5cyclictest0-21swapper/121:45:401
918299230,5cyclictest0-21swapper/119:11:081
918299230,18cyclictest0-21swapper/119:53:211
9181992314,0cyclictest0-21swapper/021:13:170
918199230,18cyclictest0-21swapper/020:47:410
918399227,14cyclictest0-21swapper/220:50:182
918399227,14cyclictest0-21swapper/220:50:182
918199220,18cyclictest0-21swapper/021:42:120
9183992116,2cyclictest29644-21nvmesmart_nvme022:35:202
9182992120,0cyclictest0-21swapper/121:15:161
9181992118,2cyclictest27289-21fschecks_count21:35:160
918199210,3cyclictest0-21swapper/021:51:160
918399200,2cyclictest9548-21cstates23:55:132
918199203,16cyclictest0-21swapper/023:50:000
9181992018,1cyclictest0-21swapper/023:25:160
918399191,16cyclictest1655-21grep19:50:192
9182991918,0cyclictest0-21swapper/120:06:241
9182991917,1cyclictest6118-21uname20:55:201
9182991917,1cyclictest0-21swapper/123:20:241
918299190,18cyclictest843-21systemd-network19:38:561
918299190,18cyclictest399-20systemd-journal21:24:561
918299190,18cyclictest20154-21cpuspeed_turbos20:25:131
9181991917,1cyclictest0-21swapper/020:42:370
9181991917,1cyclictest0-21swapper/019:44:390
918199190,18cyclictest0-21swapper/023:03:570
918399182,1cyclictest234242chrt21:29:132
918399181,16cyclictest18299-21latency_hist19:25:012
918399181,16cyclictest15019-21sshd23:08:392
918399180,17cyclictest14496-21snapd22:00:202
9182991816,1cyclictest0-21swapper/122:45:201
918299180,3cyclictest399-20systemd-journal21:52:181
918299180,17cyclictest843-21systemd-network23:50:391
918299180,17cyclictest2040-21apt-config00:40:001
918299180,17cyclictest0-21swapper/122:15:221
918299180,16cyclictest29189-21perf21:40:001
918199183,1cyclictest9-21ksoftirqd/000:27:260
9181991816,1cyclictest11283-21timerandwakeup19:10:230
9181991816,1cyclictest0-21swapper/019:35:010
9181991816,1cyclictest0-21swapper/019:35:010
9181991816,1cyclictest0-21swapper/000:08:290
9181991814,3cyclictest21356-21nfsd422:20:180
9181991813,4cyclictest17126-21cat22:15:010
9181991813,3cyclictest0-21swapper/023:15:140
918199181,16cyclictest15060-21python319:20:020
918199180,17cyclictest8850-21latency_hist20:05:010
918199180,17cyclictest27812-21munin-run22:35:000
918199180,17cyclictest0-21swapper/022:15:220
918399172,1cyclictest282712chrt00:29:572
9183991716,1cyclictest28-21ksoftirqd/220:10:212
9183991715,1cyclictest5977-21taskset23:47:582
9183991715,1cyclictest200612chrt00:14:512
9183991714,2cyclictest774-21expr21:45:142
9183991714,2cyclictest399-20systemd-journal23:00:002
9183991714,2cyclictest3242-21date21:50:012
9183991714,2cyclictest30387-21expr19:45:142
9183991714,2cyclictest30162-21ps00:30:192
9183991714,2cyclictest29575-21cron19:45:002
9183991714,2cyclictest26949-21expr23:30:122
9183991714,2cyclictest25316-21sshd00:21:542
9183991714,2cyclictest18040-21perl20:20:162
9183991714,1cyclictest0-21swapper/221:15:152
918399171,1cyclictest82692chrt21:57:082
918399171,15cyclictest0-21swapper/222:05:142
918399171,15cyclictest0-21swapper/220:43:432
918399170,2cyclictest29537-21https23:35:012
918399170,2cyclictest28743-21sshd21:36:482
918399170,2cyclictest21144-21cut21:25:002
918399170,2cyclictest14495-21snapd23:25:402
918399170,2cyclictest1351-21lxd22:30:492
918399170,2cyclictest13009-21cpu21:10:122
918399170,2cyclictest1300-21lxd22:54:502
918399170,1cyclictest0-21swapper/220:38:302
918399170,17cyclictest0-21swapper/220:06:412
918399170,16cyclictest8613-21nfsd421:00:182
918399170,16cyclictest3414-21master19:58:412
918399170,16cyclictest26557-21python319:40:012
918399170,16cyclictest22302-21expr19:30:182
918399170,16cyclictest22302-21expr19:30:172
918399170,16cyclictest21007-21expr00:15:132
918399170,16cyclictest20636-21df20:25:142
918399170,16cyclictest20257-21threads19:25:212
918399170,16cyclictest13240-21nfsd400:00:182
918399170,15cyclictest0-21swapper/223:24:582
9182991716,0cyclictest0-21swapper/122:33:551
9182991714,2cyclictest7437-21nfsd420:00:181
9182991714,2cyclictest7404-21nfsd421:55:181
9182991714,2cyclictest4890-21nvmesmart_nvme019:55:191
9182991714,2cyclictest29878-21expr21:40:151
9182991714,2cyclictest23998-21awk22:25:191
9182991714,2cyclictest19052-21grep23:15:151
9182991713,3cyclictest4035-21H222:10:211
9182991713,3cyclictest0-21swapper/119:33:341
9182991713,3cyclictest0-21swapper/119:33:331
918299171,1cyclictest0-21swapper/120:45:221
918299171,15cyclictest3976-21H222:10:211
918299170,2cyclictest3058-21rs:main1
918299170,2cyclictest27245-21cut00:25:191
918299170,2cyclictest23546-21latency_hist21:30:001
918299170,2cyclictest15819-21nfsd422:10:181
918299170,2cyclictest14324-21latency_hist20:15:011
918299170,2cyclictest10151-21lxd21:30:501
918299170,2cyclictest0-21swapper/100:15:141
918299170,1cyclictest0-21swapper/122:55:191
918299170,16cyclictest9920-21fschecks_count23:55:141
918299170,16cyclictest32663-21/usr/sbin/munin23:40:131
918299170,16cyclictest29476-21apt-key23:35:011
918299170,16cyclictest29027-21systemctl23:35:001
918299170,16cyclictest28252-21cpu22:35:151
918299170,16cyclictest25586-21basename00:25:001
918299170,16cyclictest24020-21grep23:25:131
918299170,16cyclictest2208-21fschecks_count20:50:151
918299170,16cyclictest2208-21fschecks_count20:50:151
918299170,16cyclictest21366-21awk22:20:171
918299170,16cyclictest19929-21chrt00:13:061
918299170,16cyclictest19671-21basename20:25:001
918299170,16cyclictest16280-21cstates23:10:131
918299170,16cyclictest14506-21snapd20:15:281
918299170,16cyclictest12480-21apt-config19:15:031
918299170,16cyclictest11250-21munin-run22:05:001
918299170,16cyclictest10234-21tr21:05:151
918299170,15cyclictest0-21swapper/120:35:141
918199172,1cyclictest0-21swapper/020:39:410
9181991715,1cyclictest247612chrt20:30:480
9181991715,1cyclictest0-21swapper/021:30:010
9181991715,1cyclictest0-21swapper/000:30:130
9181991714,2cyclictest961-21tune2fs19:50:140
9181991714,2cyclictest7533-21nfsd421:55:180
9181991714,2cyclictest5918-21nfsd420:55:180
9181991714,2cyclictest31181-21ntpq23:35:180
9181991714,2cyclictest26947-21expr23:30:120
9181991714,2cyclictest25176-21grep21:30:160
9181991714,2cyclictest18435-21fschecks_time00:10:130
9181991714,2cyclictest18010-21cron23:15:010
9181991714,2cyclictest17001-21awk21:15:180
9181991714,2cyclictest11792-21munin-run00:00:010
9181991714,2cyclictest10403-21ps22:00:200
9181991714,1cyclictest0-21swapper/022:45:200
918199171,2cyclictest8221-21sed23:50:210
918199171,15cyclictest3987-21H222:10:210
918199170,2cyclictest23987-21nfsd422:25:180
918199170,2cyclictest21062-21expr00:15:140
918199170,2cyclictest1636-21nfsd421:45:190
918199170,2cyclictest1515-21lxd21:06:500
918199170,2cyclictest14550-21snapd19:27:570
918199170,2cyclictest14499-21snapd19:35:190
918199170,16cyclictest9365-21expr20:05:150
918199170,16cyclictest7838-21expr21:00:140
918199170,16cyclictest5785-21munin-run20:00:010
918199170,16cyclictest32642-21/usr/sbin/munin00:35:180
918199170,16cyclictest31607-21expr22:40:130
918199170,16cyclictest25585-21perf00:25:000
918199170,16cyclictest14500-21snapd20:15:280
918199170,16cyclictest13719-21irqstats23:05:180
918199170,16cyclictest11646-21/usr/sbin/munin22:05:180
918199170,16cyclictest0-21swapper/022:35:170
918199170,16cyclictest0-21swapper/020:25:120
9183991614,2cyclictest3991-21H222:10:212
9183991614,1cyclictest29583-21/usr/sbin/munin21:40:132
9183991614,1cyclictest14934-21cpuspeed_turbos00:05:152
9183991614,1cyclictest0-21swapper/223:40:122
9183991614,1cyclictest0-21swapper/223:00:122
9183991614,1cyclictest0-21swapper/222:15:172
9183991614,1cyclictest0-21swapper/221:32:392
9183991614,1cyclictest0-21swapper/220:45:182
9183991614,1cyclictest0-21swapper/220:15:122
9183991614,1cyclictest0-21swapper/220:00:142
9183991613,2cyclictest20032-21/usr/sbin/munin22:20:182
9183991613,2cyclictest15805-21cpuspeed_turbos23:10:132
9183991613,2cyclictest0-21swapper/223:15:182
918399160,2cyclictest2001-21ls22:45:142
918399160,1cyclictest0-21swapper/223:50:172
918399160,1cyclictest0-21swapper/221:05:152
918399160,15cyclictest31143-21apt-get22:40:122
918399160,15cyclictest15982-21ntpq22:10:192
918399160,15cyclictest12324-21gpgv19:15:022
918399160,15cyclictest0-21swapper/222:25:152
918399160,15cyclictest0-21swapper/220:55:182
918399160,15cyclictest0-21swapper/220:30:152
918399160,15cyclictest0-21swapper/200:35:132
9182991614,1cyclictest4673-21wc22:50:141
9182991614,1cyclictest0-21swapper/123:45:151
9182991614,1cyclictest0-21swapper/122:05:051
9182991614,1cyclictest0-21swapper/120:30:151
9182991614,1cyclictest0-21swapper/119:45:131
918299160,15cyclictest7361-21apt-get21:00:131
918299160,15cyclictest29134-21expr00:30:131
918299160,15cyclictest27148-21dpkg19:40:021
918299160,15cyclictest14761-21/usr/sbin/munin00:05:161
918299160,15cyclictest0-21swapper/123:05:151
918299160,15cyclictest0-21swapper/123:00:181
918299160,15cyclictest0-21swapper/119:24:591
918299160,15cyclictest0-21swapper/100:00:141
918199167,9cyclictest0-21swapper/022:59:410
9181991614,1cyclictest31056-21missed_timers19:45:180
9181991614,1cyclictest0-21swapper/023:40:150
9181991614,1cyclictest0-21swapper/023:20:130
9181991614,1cyclictest0-21swapper/020:10:170
9181991614,1cyclictest0-21swapper/000:00:220
918199160,2cyclictest20241-21sed21:20:220
918199160,15cyclictest2209-21fschecks_count20:50:150
918199160,15cyclictest2209-21fschecks_count20:50:150
918199160,15cyclictest15618-21sh19:20:020
918199160,15cyclictest0-21swapper/022:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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