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2026-05-15 - 20:22
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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 highest latencies:
System rackdslot0.osadl.org (updated Fri May 15, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3132899281,17cyclictest0-21swapper/110:40:141
31327992624,1cyclictest1100-21snmpd08:22:370
31328992514,10cyclictest0-21swapper/111:10:151
3132999233,11cyclictest3415-21python308:15:012
3132899230,5cyclictest0-21swapper/108:20:011
3132999210,19cyclictest0-21swapper/209:15:172
31328992119,1cyclictest0-21swapper/112:30:141
31328992117,3cyclictest0-21swapper/110:46:141
31328992114,3cyclictest0-21swapper/107:49:301
31328992113,4cyclictest0-21swapper/110:39:321
31329992011,0cyclictest0-21swapper/210:30:152
3132899203,2cyclictest25133-21expr07:55:141
31328992014,3cyclictest0-21swapper/110:55:151
31328992014,1cyclictest0-21swapper/108:05:161
3132799203,16cyclictest1072-21date10:05:010
31329991916,2cyclictest29735-21missed_timers11:50:172
3132899192,16cyclictest0-21swapper/110:31:331
3132899192,15cyclictest0-21swapper/108:55:541
31328991917,1cyclictest0-21swapper/111:50:011
31328991917,1cyclictest0-21swapper/111:16:581
31328991916,2cyclictest15187-21ls12:20:231
31328991916,1cyclictest0-21swapper/108:20:221
31328991915,3cyclictest13918-21sort07:35:151
31328991915,1cyclictest0-21swapper/110:21:311
3132899191,3cyclictest22920-21nvmesmart_nvme012:35:161
3132899190,18cyclictest0-21swapper/110:08:581
31327991914,4cyclictest0-21swapper/011:28:300
3132999182,15cyclictest21199-21expr11:35:162
31329991815,2cyclictest31727-21timerwakeupswit10:55:222
31329991815,2cyclictest17871-21fschecks_time11:30:152
3132999181,2cyclictest15036-21chrt08:32:362
3132999181,16cyclictest29512-21chrt08:00:232
3132999180,17cyclictest843-21systemd-network11:02:112
3132999180,17cyclictest843-21systemd-network10:21:272
3132999180,17cyclictest1829-21systemd-journal11:08:552
3132899182,15cyclictest18276-21switchtime07:40:201
3132899182,15cyclictest15707-21nfsd409:30:171
3132899182,15cyclictest11807-21nfsd412:15:191
3132899182,15cyclictest11406-21nfsd408:25:181
31328991815,2cyclictest5650-21chrt09:12:321
31328991815,2cyclictest32099-21grep11:55:151
31328991815,2cyclictest12608-21if_lxdbr011:20:151
31328991815,2cyclictest10552-21chrt07:30:031
31328991815,1cyclictest0-21swapper/108:11:571
31328991813,2cyclictest30094-21grep11:50:191
31328991812,5cyclictest7452-21perf07:25:011
3132899181,16cyclictest7819-21grep09:15:211
3132899181,16cyclictest25074-21missed_timers08:50:171
3132899180,3cyclictest8961-21tail12:10:171
3132899180,3cyclictest8961-21tail12:10:161
3132899180,2cyclictest14375-21ps08:30:191
3132899180,1cyclictest0-21swapper/108:40:141
3132899180,1cyclictest0-21swapper/108:40:131
3132899180,17cyclictest399-20systemd-journal08:39:561
3132899180,17cyclictest2007-21systemd-journal09:08:531
3132899180,17cyclictest2007-21systemd-journal09:08:521
3132899180,17cyclictest0-21swapper/110:50:111
3132899180,17cyclictest0-21swapper/110:10:181
3132899180,16cyclictest19616-21anvil09:42:291
3132799182,15cyclictest7463-21nfsd411:10:170
3132799182,15cyclictest0-21swapper/010:05:050
3132799180,17cyclictest29894-21perf08:05:010
3132799180,17cyclictest15887-21dpkg10:30:010
3132999172,1cyclictest0-21swapper/212:34:522
31329991715,1cyclictest0-21swapper/208:55:152
31329991714,2cyclictest8547-21cron11:15:002
31329991714,2cyclictest4688-21basename10:10:112
31329991714,2cyclictest4638-21cut12:05:002
31329991714,2cyclictest31938-21expr11:55:142
31329991714,2cyclictest31451-21expr10:00:142
31329991714,2cyclictest20411-21switchtime10:35:222
31329991714,2cyclictest18532-21cat12:30:002
31329991714,2cyclictest10582-21sendmail_mailqu09:20:212
31329991713,3cyclictest3981-21H222:10:212
3132999171,15cyclictest3987-21H222:10:212
3132999171,15cyclictest0-21swapper/210:15:122
3132999171,15cyclictest0-21swapper/207:40:012
3132999171,15cyclictest0-21swapper/207:25:162
3132999170,2cyclictest9902-21rm08:25:012
3132999170,2cyclictest4178-21fschecks_count09:10:142
3132999170,2cyclictest3976-21H222:10:212
3132999170,2cyclictest23597-21pzem_current07:50:192
3132999170,2cyclictest23257-21expr11:40:142
3132999170,2cyclictest2319-21smtp09:05:522
3132999170,2cyclictest2319-21smtp09:05:512
3132999170,2cyclictest22996-21awk10:40:192
3132999170,2cyclictest18633-21nvmesmart_nvme009:35:182
3132999170,2cyclictest14496-21snapd12:12:582
3132999170,2cyclictest14496-21snapd12:12:572
3132999170,1cyclictest0-21swapper/209:30:562
3132999170,16cyclictest4921-21apt-get12:05:132
3132999170,16cyclictest3250-21ls10:05:202
3132999170,16cyclictest31196-21sed09:00:212
3132999170,16cyclictest29129-21/usr/sbin/munin09:55:162
3132999170,16cyclictest24844-21expr10:45:142
3132999170,16cyclictest23788-21sessionclean12:39:002
3132999170,16cyclictest22075-21idleruntime08:45:162
3132999170,16cyclictest12098-21pzem_current07:30:212
3132999170,16cyclictest10259-21awk08:25:142
3132999170,16cyclictest0-21swapper/210:50:152
3132999170,16cyclictest0-21swapper/207:40:172
31328991714,2cyclictest7946-21cpuspeed_turbos07:25:141
31328991714,2cyclictest7417-21/usr/sbin/munin10:15:101
31328991714,2cyclictest31251-21cpuspeed_turbos10:00:141
31328991714,2cyclictest29974-21expr09:00:141
31328991714,2cyclictest28123-21cstates08:00:141
31328991714,2cyclictest22364-21sendmail-mta11:39:541
31328991714,2cyclictest17741-21cstates09:35:141
31328991714,2cyclictest16024-21find11:25:211
31328991714,2cyclictest12143-21expr09:25:121
3132899171,15cyclictest32536-21interrupts07:10:161
3132899171,15cyclictest21321-21egrep08:45:141
3132899170,2cyclictest4899-21/usr/sbin/munin12:05:111
3132899170,2cyclictest23320-21cstates11:40:131
3132899170,2cyclictest22370-21cat07:50:131
3132899170,2cyclictest17619-21grep12:25:181
3132899170,2cyclictest13395-21expr10:25:131
3132899170,16cyclictest9016-21find09:20:131
3132899170,16cyclictest4281-21irqstats11:05:161
3132899170,16cyclictest29008-21hddtemp_smartct09:55:151
3132899170,16cyclictest2685-21uniq07:15:151
3132899170,16cyclictest26189-21fschecks_count09:50:141
3132899170,16cyclictest23565-21/usr/sbin/munin09:45:151
3132899170,16cyclictest2262-21flock11:00:301
3132899170,16cyclictest1921-21cpuspeed_turbos12:00:131
3132899170,16cyclictest0-21swapper/111:30:141
31327991715,1cyclictest219612chrt11:36:390
31327991715,1cyclictest0-21swapper/008:27:020
31327991715,1cyclictest0-21swapper/008:11:390
31327991714,2cyclictest4680-21/usr/sbin/munin10:10:120
31327991714,2cyclictest4035-21H222:10:210
31327991714,2cyclictest2447-21expr07:15:150
31327991714,2cyclictest22830-21apache_accesses11:40:110
31327991714,2cyclictest22440-21munin-run09:45:010
31327991714,2cyclictest19401-21fschecks_count12:30:130
31327991714,2cyclictest18830-21expr08:40:140
31327991714,2cyclictest18830-21expr08:40:130
31327991714,2cyclictest1784-21proc_pri09:05:210
31327991714,2cyclictest1784-21proc_pri09:05:210
31327991714,2cyclictest16985-21munin-plugin-st09:35:010
31327991714,2cyclictest16373-21expr12:25:120
31327991714,2cyclictest15300-21python310:30:010
31327991714,2cyclictest1515-21lxd10:36:460
31327991714,2cyclictest14055-21cron09:30:000
31327991713,3cyclictest843-21systemd-network07:45:440
31327991713,3cyclictest0-21swapper/012:04:220
31327991712,4cyclictest870-21systemd-logind09:48:510
3132799171,15cyclictest56122chrt09:11:580
3132799171,15cyclictest29857-21apt-get10:55:110
3132799171,15cyclictest243422sleep007:54:300
3132799171,15cyclictest0-21swapper/009:35:150
3132799171,15cyclictest0-21swapper/009:20:180
3132799170,2cyclictest8498-21sshd09:19:030
3132799170,2cyclictest5601-21lxd08:50:460
3132799170,2cyclictest4296-21uname11:05:150
3132799170,2cyclictest25802-21dpkg11:45:010
3132799170,16cyclictest32083-21ls08:05:210
3132799170,16cyclictest28689-21apache_processe11:50:110
3132799170,16cyclictest27144-21expr08:55:120
3132799170,16cyclictest1812-21pzem_current11:00:180
3132799170,16cyclictest17321-21cpuspeed_turbos11:30:130
3132799170,16cyclictest14505-21snapd12:17:570
3132799170,16cyclictest14277-21ntp_kernel_err08:30:180
3132799170,16cyclictest1085-21gdbus10:20:190
31329991614,1cyclictest14107-21nfsd410:25:162
31329991614,1cyclictest0-21swapper/211:15:172
31329991614,1cyclictest0-21swapper/207:55:132
31329991613,2cyclictest24294-21wc08:50:142
31329991613,2cyclictest14463-21apache_accesses11:25:122
31329991613,2cyclictest12944-21nfsd411:20:172
3132999160,2cyclictest32126-21cstates07:10:142
3132999160,1cyclictest0-21swapper/207:15:172
3132999160,15cyclictest19324-21idleruntime08:40:162
3132999160,15cyclictest19324-21idleruntime08:40:162
3132999160,15cyclictest12069-21cat09:25:132
3132999160,15cyclictest0-21swapper/212:20:012
3132999160,15cyclictest0-21swapper/211:45:172
3132999160,15cyclictest0-21swapper/209:50:202
3132999160,15cyclictest0-21swapper/209:45:172
3132999160,15cyclictest0-21swapper/209:40:202
3132999160,15cyclictest0-21swapper/208:05:572
3132999160,15cyclictest0-21swapper/207:45:172
3132999160,15cyclictest0-21swapper/207:20:142
31327991614,1cyclictest0-21swapper/012:35:110
31327991614,1cyclictest0-21swapper/012:10:130
31327991614,1cyclictest0-21swapper/012:10:130
31327991614,1cyclictest0-21swapper/010:48:180
31327991614,1cyclictest0-21swapper/010:15:120
31327991614,1cyclictest0-21swapper/008:15:150
31327991614,1cyclictest0-21swapper/007:40:020
31327991614,1cyclictest0-21swapper/007:35:160
31327991614,1cyclictest0-21swapper/007:10:160
31327991613,2cyclictest8987-21apt-get11:15:140
31327991613,2cyclictest5076-21expr12:05:130
31327991613,2cyclictest26830-21nfsd409:50:170
31327991613,2cyclictest22846-21grep10:40:170
3132799160,2cyclictest10533-21date07:30:010
3132799160,1cyclictest0-21swapper/012:20:180
3132799160,1cyclictest0-21swapper/008:45:150
3132799160,15cyclictest28889-21/usr/sbin/munin09:55:140
3132799160,15cyclictest25104-21expr07:55:140
3132799160,15cyclictest14375-21cut11:25:010
3132799160,15cyclictest0-21swapper/011:55:170
3132799160,15cyclictest0-21swapper/010:50:090
3132799160,15cyclictest0-21swapper/007:30:150
3132799160,15cyclictest0-21swapper/007:20:130
3132799150,0cyclictest0-21swapper/009:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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