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2026-07-31 - 20:12
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Fri Jul 31, 2026 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1361629634,49sleep10-21swapper/107:09:201
129772877,64sleep013076-21/usr/sbin/munin07:05:320
301892810,6chrt0-21swapper/109:25:001
301892810,6chrt0-21swapper/109:25:001
13809998050,16cyclictest17479-21sshd08:50:140
13809998034,8cyclictest503-21snmpd07:45:000
13809997743,22cyclictest6992-21apt-get09:50:150
13809997729,43cyclictest17573-21runrttasks10:16:140
13809997552,14cyclictest3459-21apt-get08:10:240
13809997433,35cyclictest867-21runrttasks08:01:330
13809997352,12cyclictest28611-21apt-get09:20:140
13809997352,12cyclictest28611-21apt-get09:20:140
13809997344,23cyclictest18112-21taskset10:20:030
13809997332,36cyclictest14541-21date11:40:010
13814997245,21cyclictest26712-21runrttasks12:11:211
13814997211,13cyclictest0-21swapper/108:25:141
13809997251,12cyclictest13995-21apt-get08:40:130
13809997229,23cyclictest1368-21ntpq12:30:380
211352710,24sleep126-21ksoftirqd/111:55:441
13814997128,37cyclictest17296-21latency_hist08:50:011
1380999715,56cyclictest8697-21apt-get08:25:130
13809997131,21cyclictest7743-21/usr/sbin/munin08:20:330
13809997127,9cyclictest9604-21memory09:55:360
13809997127,14cyclictest27286-21dpkg10:45:030
13809997124,41cyclictest17260-21runrttasks08:49:400
13809997036,27cyclictest25486-21/usr/sbin/munin12:10:200
13809997035,26cyclictest24202-21kernelversion12:05:260
13809997033,32cyclictest29051-21tr07:50:270
13809997033,31cyclictest32744-21apt-get11:00:140
13809997033,31cyclictest1-21systemd10:10:150
13809997026,38cyclictest25797-21df10:40:190
13809997026,37cyclictest13163-21df10:05:190
13809997026,37cyclictest13163-21df10:05:190
13814996940,22cyclictest12828-21apt-get10:05:121
13814996940,22cyclictest12828-21apt-get10:05:121
13809996932,31cyclictest10233-21python311:25:330
13809996924,39cyclictest1839-21irqstats08:05:260
1380999686,52cyclictest32395-21apt-get09:30:150
13809996839,23cyclictest562-21runrttasks11:05:150
13809996837,25cyclictest14-21ksoftirqd/007:45:300
13809996836,27cyclictest4625-21grep09:40:360
13809996835,28cyclictest13836-21awk08:40:010
13809996829,35cyclictest17455-21unixbench_multi11:45:350
13809996829,32cyclictest20082-21cpuspeed10:25:180
13809996826,36cyclictest32219-21taskset10:56:340
13814996736,27cyclictest72-1kworker/1:1H08:00:311
1380999676,52cyclictest21963-21apt-get12:00:150
13809996735,23cyclictest26662-21apt-key09:15:030
13809996734,29cyclictest6227-21/usr/sbin/munin11:15:210
13809996725,36cyclictest481-21gdbus12:40:000
13814996640,22cyclictest24714-21systemd07:40:011
13814996640,22cyclictest24714-21systemd07:40:011
13814996638,22cyclictest5351-21chrt11:11:131
13814996626,35cyclictest16944-21processes07:15:321
13809996646,9cyclictest31030-21apt-get12:25:130
13809996638,23cyclictest23186-21turbostat10:35:010
13809996636,25cyclictest20241-21wc07:25:260
13809996636,21cyclictest16418-21cpuspeed_turbos07:15:180
13809996635,24cyclictest11288-21/usr/sbin/munin08:30:340
13809996632,29cyclictest243-21systemd-journal07:33:180
13809996630,11cyclictest29062-21sshd12:20:140
13809996626,34cyclictest5431-21cpu09:45:170
13809996626,21cyclictest18444-21cstates11:50:180
1381499658,52cyclictest36-21kcompactd011:40:191
1381499658,52cyclictest36-21kcompactd011:40:191
13814996538,22cyclictest30803-21apt-key12:25:031
13814996538,21cyclictest19171-21unixbench_multi10:20:371
13814996537,23cyclictest15244-21runrttasks08:41:411
13814996537,21cyclictest28422-21taskset12:16:041
13814996537,21cyclictest22393-21proc_pri10:30:331
13814996536,23cyclictest6523-21taskset08:17:281
13814996536,23cyclictest6523-21taskset08:17:281
13814996536,22cyclictest28204-21taskset07:48:081
13814996534,25cyclictest29725-21ntp_states12:20:281
13809996537,23cyclictest18765-21seq07:20:340
13809996536,22cyclictest23652-21apt-get10:35:150
13809996535,21cyclictest0-21swapper/010:00:210
13809996535,20cyclictest5575-21sort08:15:230
13809996535,20cyclictest5575-21sort08:15:230
13809996534,26cyclictest14-21ksoftirqd/009:00:300
13809996530,30cyclictest24809-21apt-get09:10:210
13809996526,34cyclictest29792-21/usr/sbin/munin10:50:250
13809996523,37cyclictest23604-21irqstats07:35:250
13809996523,37cyclictest23604-21irqstats07:35:250
13814996436,24cyclictest2048-21df_inode09:35:221
13814996436,23cyclictest26373-21taskset07:42:071
13814996435,23cyclictest7339-21chrt11:18:541
13814996435,23cyclictest503-21snmpd08:12:551
13814996435,23cyclictest17683-21taskset11:46:501
13814996434,25cyclictest29520-21cstates10:50:181
13814996434,24cyclictest24277-21grep10:35:311
13814996434,23cyclictest32544-21aten2.4_r3power09:30:181
13814996432,25cyclictest13537-21taskset08:37:531
13814996428,30cyclictest24435-21ntp_states12:05:311
1380999646,15cyclictest0-21swapper/008:55:120
13809996440,17cyclictest31876-21turbostat08:00:000
13809996440,17cyclictest20115-21cmp11:55:040
13809996434,23cyclictest12125-21timerwakeupswit11:30:340
13809996427,30cyclictest1712-21sshd09:35:140
13809996423,16cyclictest30650-21apt-get09:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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