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2026-03-24 - 21:16
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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 Tue Mar 24, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1580199258,16cyclictest18321-21perf12:00:000
1580299230,19cyclictest0-21swapper/108:34:531
1580199220,4cyclictest0-21swapper/008:26:280
1580399215,15cyclictest0-21swapper/209:55:332
1580399210,18cyclictest0-21swapper/208:08:442
1580199210,3cyclictest0-21swapper/009:21:060
1580199210,3cyclictest0-21swapper/009:21:060
1580199210,19cyclictest0-21swapper/011:20:010
15803992018,1cyclictest28-21ksoftirqd/207:20:442
1580399201,18cyclictest3986-21H222:10:212
1580399201,18cyclictest3986-21H222:10:212
1580399201,17cyclictest30858-21fschecks_count07:35:142
15802992013,3cyclictest0-21swapper/112:06:201
1580199203,16cyclictest0-21swapper/010:05:180
1580199200,3cyclictest1829-21systemd-journal10:38:590
1580399192,1cyclictest0-21swapper/211:49:562
1580399192,16cyclictest11953-21smtpd07:58:122
1580399191,2cyclictest3851-21latency_hist07:45:012
1580399190,18cyclictest15765-21nfsd410:55:192
1580299190,16cyclictest12283-21cat08:00:011
1580199192,1cyclictest0-21swapper/010:30:090
1580199192,16cyclictest10782-21cstates11:45:120
1580199190,5cyclictest0-21swapper/008:10:570
1580199190,5cyclictest0-21swapper/008:08:580
1580199190,3cyclictest0-21swapper/012:16:370
1580199190,2cyclictest22030-21latency_hist09:15:010
1580199190,1cyclictest0-21swapper/007:17:240
1580199190,16cyclictest0-21swapper/008:47:090
1580399182,2cyclictest21847-21chrt09:12:472
1580399182,15cyclictest20239-21chrt08:11:522
15803991817,1cyclictest28-21ksoftirqd/208:58:542
1580399180,2cyclictest17983-21munin-run10:05:002
1580399180,2cyclictest1079-21cups-browsed10:35:212
1580399180,17cyclictest9424-21nfsd408:50:182
1580299182,15cyclictest16699-21smartctl08:05:191
15802991815,1cyclictest0-21swapper/111:54:361
15802991814,3cyclictest3053-21systemd-logind11:48:521
15802991814,3cyclictest16914-21latency_hist11:00:001
1580299180,17cyclictest843-21systemd-network07:28:471
1580299180,17cyclictest3351-21lxd12:22:431
1580299180,17cyclictest3351-21lxd12:22:431
1580199183,1cyclictest9-21ksoftirqd/009:41:540
1580199182,15cyclictest24491-21mii-tool08:20:160
15801991816,1cyclictest0-21swapper/007:10:130
15801991816,1cyclictest0-21swapper/007:10:130
15801991814,3cyclictest1829-21systemd-journal12:01:500
1580199181,2cyclictest30896-21grep12:20:150
1580199181,2cyclictest30896-21grep12:20:150
1580199181,16cyclictest1808-21expr11:30:150
1580199181,16cyclictest16793-21snapd10:42:480
1580199180,17cyclictest24072-21cat12:10:010
1580199180,17cyclictest1821-21cron08:39:000
15803991715,1cyclictest312742sleep208:33:142
15803991715,1cyclictest28-21ksoftirqd/210:15:222
15803991715,1cyclictest0-21swapper/211:30:142
15803991715,1cyclictest0-21swapper/210:45:162
15803991715,1cyclictest0-21swapper/210:40:162
15803991715,1cyclictest0-21swapper/208:40:142
15803991715,1cyclictest0-21swapper/208:20:012
15803991715,1cyclictest0-21swapper/207:25:182
15803991714,2cyclictest9171-21ntp_offset11:40:152
15803991714,2cyclictest4317-21apache_volume09:40:132
15803991714,2cyclictest3414-21master12:27:222
15803991714,2cyclictest32523-21processes11:25:212
15803991714,2cyclictest27011-21processes11:15:202
15803991714,2cyclictest2604-21pzem_current09:35:192
15803991714,2cyclictest24018-21nfsd411:10:192
15803991714,2cyclictest17178-21acpi11:00:112
15803991714,2cyclictest15773-21chrt09:02:142
15803991714,2cyclictest15433-21chrt11:53:452
15803991714,2cyclictest10003-21dpkg09:50:012
15803991714,1cyclictest0-21swapper/211:55:132
1580399170,2cyclictest29476-21python312:20:002
1580399170,16cyclictest8848-21ls07:50:222
1580399170,16cyclictest6807-21smtpd12:35:132
1580399170,16cyclictest6036-21needreboot11:35:192
1580399170,16cyclictest31747-21pzem_current12:20:202
1580399170,16cyclictest31747-21pzem_current12:20:202
1580399170,16cyclictest30632-21/usr/sbin/munin09:30:112
1580399170,16cyclictest30069-21chrt09:28:002
1580399170,16cyclictest29680-21ntp_offset11:20:182
1580399170,16cyclictest2872-21systemd-logind12:06:522
1580399170,16cyclictest25889-21pzem_power12:10:202
1580399170,16cyclictest22454-21apache_volume09:15:122
1580399170,16cyclictest16766-21snapd10:50:372
1580399170,16cyclictest16716-21fschecks_count07:10:142
1580399170,16cyclictest16716-21fschecks_count07:10:132
1580399170,16cyclictest1079-21cups-browsed10:25:202
1580399170,16cyclictest0-21swapper/208:45:152
15802991715,1cyclictest20400-21sendmail_mailqu07:15:201
15802991714,2cyclictest9672-21dpkg09:50:011
15802991714,2cyclictest9672-21dpkg09:50:011
15802991714,2cyclictest7592-21latency_hist11:40:011
15802991714,2cyclictest625-21nfsd408:35:191
15802991714,2cyclictest29173-21chrt12:17:141
15802991714,2cyclictest25214-21sendmail_mailqu08:20:211
15802991714,2cyclictest23894-21munin-plugin-st10:15:001
15802991714,2cyclictest17239-21nfsd411:55:171
15802991714,2cyclictest1522-21lxd11:28:431
15802991713,3cyclictest5942-21wc10:40:011
1580299171,15cyclictest0-21swapper/110:00:171
1580299170,2cyclictest18778-21sort09:09:011
1580299170,16cyclictest9526-21cat07:55:011
1580299170,16cyclictest945-21needreboot10:30:161
1580299170,16cyclictest9428-21expr10:45:151
1580299170,16cyclictest8501-21cat08:50:141
1580299170,16cyclictest3294-21taskset09:37:211
1580299170,16cyclictest31150-21latency07:35:161
1580299170,16cyclictest20896-21chrt12:03:131
1580299170,16cyclictest19610-21grep10:05:181
1580299170,16cyclictest19456-21grep08:10:191
1580299170,16cyclictest13234-21fschecks_time08:00:161
1580299170,16cyclictest11039-21if_lxdbr009:50:161
1580199172,15cyclictest9-21ksoftirqd/008:50:100
15801991715,1cyclictest0-21swapper/011:10:150
15801991714,2cyclictest8134-21grep09:45:170
15801991714,2cyclictest8134-21grep09:45:160
15801991714,2cyclictest5526-21grep07:45:170
15801991714,2cyclictest29601-21expr08:30:120
15801991714,2cyclictest28481-21expr09:25:150
15801991714,2cyclictest27469-21cat07:30:110
15801991714,2cyclictest25813-21/usr/sbin/munin07:25:180
15801991714,2cyclictest25024-21latency10:15:160
15801991714,2cyclictest22021-21idleruntime10:10:160
15801991714,2cyclictest2034-21http_loadtime07:40:150
15801991714,2cyclictest14471-21sed08:00:240
1580199170,2cyclictest8282-21cstates11:40:110
1580199170,2cyclictest4821-21/usr/sbin/munin12:30:150
1580199170,2cyclictest31234-21/usr/sbin/munin09:30:130
1580199170,2cyclictest30825-21grep10:25:180
1580199170,2cyclictest27334-21df_inode10:20:150
1580199170,2cyclictest22375-21cron11:10:000
1580199170,2cyclictest21754-21cpuspeed_turbos07:20:120
1580199170,2cyclictest2066-21grep12:25:210
1580199170,2cyclictest17975-21basename11:00:160
1580199170,2cyclictest15373-21latency_hist10:00:010
1580199170,2cyclictest0-21swapper/011:20:170
1580199170,16cyclictest9981-21appstreamcli09:50:010
1580199170,16cyclictest9690-21hddtemp_smartct10:45:170
1580199170,16cyclictest7195-21tr07:50:140
1580199170,16cyclictest6877-21chrt11:35:560
1580199170,16cyclictest3351-21lxd12:36:430
1580199170,16cyclictest32486-21cron07:38:590
1580199170,16cyclictest31016-21/usr/sbin/munin11:25:130
1580199170,16cyclictest2730-21switchtime09:35:220
1580199170,16cyclictest24443-21grep12:10:130
1580199170,16cyclictest21411-21cat08:15:170
1580199170,16cyclictest17266-21/usr/sbin/munin09:05:160
1580199170,16cyclictest15189-21idleruntime10:55:150
1580199170,16cyclictest14113-21expr09:00:140
1580199170,16cyclictest13327-21grep11:50:120
1580199170,16cyclictest12422-21smartctl10:50:150
1580199170,16cyclictest11520-21/usr/sbin/munin08:55:140
1580199170,16cyclictest10465-21/usr/sbin/munin07:55:160
1580199170,16cyclictest0-21swapper/009:15:140
15803991614,1cyclictest0-21swapper/210:30:112
15803991614,1cyclictest0-21swapper/210:20:182
15803991614,1cyclictest0-21swapper/207:45:122
15803991614,1cyclictest0-21swapper/207:30:142
1580399160,2cyclictest19496-21cron11:09:542
1580399160,2cyclictest16942-21expr09:05:142
1580399160,1cyclictest0-21swapper/210:10:162
1580399160,15cyclictest23656-21apache_accesses08:20:112
1580399160,15cyclictest18858-21apache_processe07:15:122
1580399160,15cyclictest14384-21timerwakeupswit08:00:242
1580399160,15cyclictest0-21swapper/212:30:132
1580399160,15cyclictest0-21swapper/212:05:002
1580399160,15cyclictest0-21swapper/210:09:462
1580399160,15cyclictest0-21swapper/208:35:142
1580399160,15cyclictest0-21swapper/208:25:182
15802991614,1cyclictest1867-21nfsd412:25:191
15802991614,1cyclictest14020-21expr09:00:151
15802991614,1cyclictest0-21swapper/112:30:211
15802991614,1cyclictest0-21swapper/111:10:171
15802991614,1cyclictest0-21swapper/110:40:151
15802991614,1cyclictest0-21swapper/109:55:161
15802991614,1cyclictest0-21swapper/109:30:181
15802991614,1cyclictest0-21swapper/109:10:151
15802991614,1cyclictest0-21swapper/108:46:441
15802991614,1cyclictest0-21swapper/108:40:151
15802991614,1cyclictest0-21swapper/108:20:011
15802991613,2cyclictest30706-21nfsd410:25:181
15802991613,2cyclictest25567-21nfsd412:10:181
15802991613,1cyclictest2170-21http_loadtime11:30:151
1580299160,2cyclictest29809-21perf07:35:001
1580299160,1cyclictest3986-21H222:10:211
1580299160,1cyclictest3986-21H222:10:211
1580299160,1cyclictest28119-21ntp_kernel_pll_10:20:201
1580299160,1cyclictest22408-21perf11:10:011
1580299160,1cyclictest1515-21lxd09:18:421
1580299160,1cyclictest0-21swapper/111:00:221
1580299160,1cyclictest0-21swapper/108:25:141
1580299160,15cyclictest4788-21cat07:45:131
1580299160,15cyclictest27007-21/usr/sbin/munin11:15:201
1580299160,15cyclictest22578-21kernelversion07:20:171
1580299160,15cyclictest12463-21idleruntime10:50:171
1580299160,15cyclictest10947-21apache_processe08:55:111
1580299160,15cyclictest1068-21apt-config07:40:051
1580299160,15cyclictest0-21swapper/112:35:131
1580299160,15cyclictest0-21swapper/111:40:111
1580299160,15cyclictest0-21swapper/110:15:161
1580299160,15cyclictest0-21swapper/109:40:151
1580299160,15cyclictest0-21swapper/109:25:141
1580199160,2cyclictest15639-21apache_volume10:00:120
1580199160,15cyclictest2617-21cpuspeed_turbos08:40:140
1580299150,1cyclictest0-21swapper/107:10:191
1580299150,1cyclictest0-21swapper/107:10:191
1580299150,14cyclictest0-21swapper/111:20:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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