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2026-03-17 - 18:18
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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 17, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28120992523,1cyclictest21658-21timerwakeupswit10:40:212
2811899220,4cyclictest0-21swapper/009:20:010
2811899220,4cyclictest0-21swapper/009:20:000
2812099210,20cyclictest843-21systemd-network10:14:512
2811999214,1cyclictest0-21swapper/108:10:161
28120992016,3cyclictest0-21swapper/210:07:442
2811999202,1cyclictest0-21swapper/107:21:151
28118992016,3cyclictest0-21swapper/008:11:360
2812099193,2cyclictest16777-21cut10:35:012
28120991916,2cyclictest21474-21cpuspeed_turbos08:50:112
28120991916,2cyclictest18754-21ntp_kernel_err09:40:182
28120991916,2cyclictest18754-21ntp_kernel_err09:40:182
28120991916,1cyclictest0-21swapper/210:03:592
28120991912,3cyclictest0-21swapper/211:35:292
2812099190,4cyclictest3212-21JS22:10:212
2812099190,17cyclictest0-21swapper/211:10:122
2811999193,1cyclictest12727-21expr12:20:121
2811999192,11cyclictest7654-21munin-run11:15:011
28119991915,3cyclictest0-21swapper/112:27:421
2811999190,3cyclictest0-21swapper/107:35:321
2811899192,16cyclictest13784-21sendmail_mailqu12:20:180
28118991919,0cyclictest0-21swapper/008:15:110
28120991815,2cyclictest9320-21munin-run12:15:002
28120991814,3cyclictest5478-21ls09:20:012
28120991814,3cyclictest5478-21ls09:20:012
28120991814,3cyclictest0-21swapper/208:39:492
2812099181,2cyclictest26110-21kernelversion10:50:152
2812099181,2cyclictest13294-21chrt11:23:312
2812099181,16cyclictest993-21dbus-daemon07:15:202
2812099181,16cyclictest863-21avahi-daemon11:45:212
2812099180,3cyclictest16766-21snapd12:32:482
2812099180,1cyclictest0-21swapper/207:48:392
2812099180,17cyclictest6961-21ps10:15:192
28119991816,1cyclictest21-21ksoftirqd/108:45:391
28119991816,1cyclictest0-21swapper/112:15:171
28119991814,2cyclictest30128-21nvmesmart_nvme010:00:171
2811999181,2cyclictest25793-21fschecks_count10:50:141
2811999181,1cyclictest0-21swapper/109:47:561
2811999181,16cyclictest5658-21cstates07:25:151
2811999180,17cyclictest1079-21cups-browsed10:35:191
2811899182,15cyclictest24740-21which08:55:170
28118991815,2cyclictest10993-21cat11:20:000
28118991815,1cyclictest0-21swapper/012:25:490
2812099172,1cyclictest0-21swapper/211:00:132
2812099172,1cyclictest0-21swapper/211:00:122
28120991717,0cyclictest0-21swapper/208:45:162
28120991714,2cyclictest5351-21proc_pri12:05:192
28120991714,2cyclictest25216-21/usr/sbin/munin08:00:212
28120991714,2cyclictest15973-21cpuspeed_turbos08:40:142
28120991714,2cyclictest15465-21expr12:25:152
28120991714,2cyclictest1530-21cat08:15:012
28120991714,2cyclictest10945-21munin-run11:20:002
28120991714,2cyclictest0-21swapper/209:10:172
28120991713,3cyclictest16793-21snapd10:20:182
2812099170,2cyclictest7193-21nfsd409:20:182
2812099170,2cyclictest25575-21sendmail_mailqu08:55:222
2812099170,2cyclictest12044-21nfsd407:35:182
2812099170,2cyclictest11973-21cut09:30:152
2812099170,16cyclictest8695-21nfsd408:25:202
2812099170,16cyclictest4881-21apt-config07:25:012
2812099170,16cyclictest29829-21expr09:05:142
2812099170,16cyclictest29803-21ntp_kernel_pll_07:10:192
2812099170,16cyclictest29093-21munin-run09:05:012
2812099170,16cyclictest24816-21perf08:00:012
2812099170,16cyclictest24816-21perf08:00:012
2812099170,16cyclictest24695-21chrt10:49:122
2812099170,16cyclictest2325-21hddtemp_smartct11:05:152
2812099170,16cyclictest23128-21dpkg09:50:022
2812099170,16cyclictest22003-21mailstats12:35:202
2812099170,16cyclictest21191-21missed_timers09:45:202
2812099170,16cyclictest1489-21cut12:00:152
2812099170,16cyclictest0-21swapper/209:35:172
28119991715,1cyclictest14799-21idleruntime09:35:151
28119991714,2cyclictest9796-21sendmail_mailst10:20:181
28119991714,2cyclictest7127-21cat12:10:131
28119991714,2cyclictest4035-21H222:10:211
28119991714,2cyclictest3662-21grep09:15:151
28119991714,2cyclictest3662-21grep09:15:141
28119991714,2cyclictest20373-21fschecks_count10:40:131
2811999171,1cyclictest135942chrt09:34:381
2811999171,15cyclictest10946-21munin-plugin-st11:20:001
2811999170,2cyclictest32565-21grep07:15:191
2811999170,2cyclictest31744-21ntp_kernel_err11:55:191
2811999170,2cyclictest29909-21ps10:55:211
2811999170,2cyclictest28268-21cron10:00:001
2811999170,2cyclictest24196-21threads10:45:201
2811999170,2cyclictest17644-21cstates09:40:141
2811999170,2cyclictest17644-21cstates09:40:131
2811999170,2cyclictest16793-21snapd08:22:491
2811999170,2cyclictest15270-21pzem_power07:40:211
2811999170,1cyclictest0-21swapper/109:05:211
2811999170,16cyclictest6360-21munin-run12:10:011
2811999170,16cyclictest4663-21latency_hist10:15:011
2811999170,16cyclictest4516-21python311:10:001
2811999170,16cyclictest3414-21master11:50:131
2811999170,16cyclictest3053-21systemd-logind08:54:521
2811999170,16cyclictest29303-21if_lxdbr007:10:171
2811999170,16cyclictest26965-21cpuspeed_turbos09:00:131
2811999170,16cyclictest25388-21ntp_kernel_err08:55:201
2811999170,16cyclictest22355-21cut11:40:151
2811999170,16cyclictest18017-21expr12:30:141
2811999170,16cyclictest16801-21cut11:30:111
2811999170,16cyclictest16748-21snapd07:57:261
2811999170,16cyclictest16748-21snapd07:57:261
2811999170,16cyclictest1079-21cups-browsed10:25:211
2811899172,1cyclictest17785-21nfsd411:30:160
2811899172,15cyclictest9-21ksoftirqd/008:40:390
28118991717,0cyclictest0-21swapper/008:37:200
28118991715,1cyclictest0-21swapper/008:20:200
28118991714,2cyclictest6976-21sed09:20:170
28118991714,2cyclictest4163-21sed10:10:200
28118991714,2cyclictest3981-21H222:10:210
28118991714,2cyclictest3981-21H222:10:210
28118991714,2cyclictest32482-21chrt11:57:250
28118991714,2cyclictest32400-21egrep09:10:130
28118991714,2cyclictest30423-21cron08:10:010
28118991714,2cyclictest2872-21systemd-logind12:04:520
28118991714,2cyclictest27278-21expr09:00:140
28118991714,2cyclictest2069-21systemd-udevd08:32:520
28118991714,2cyclictest20513-21nfsd411:35:170
28118991714,2cyclictest15821-21timerandwakeup09:35:200
28118991713,3cyclictest426-21systemd-udevd07:42:510
2811899170,2cyclictest2872-21systemd-logind10:20:520
2811899170,2cyclictest1522-21lxd09:48:400
2811899170,2cyclictest12404-21grep11:20:170
2811899170,16cyclictest4931-21munin-run07:25:010
2811899170,16cyclictest4035-21H222:10:210
2811899170,16cyclictest32430-21latency10:05:160
2811899170,16cyclictest31456-21seq11:00:130
2811899170,16cyclictest31456-21seq11:00:130
2811899170,16cyclictest3058-21rs:main0
2811899170,16cyclictest30257-21pzem_voltage10:00:190
2811899170,16cyclictest28553-21/usr/sbin/munin11:50:160
2811899170,16cyclictest25806-21/usr/sbin/munin11:45:160
2811899170,16cyclictest2069-21systemd-udevd12:36:520
2811899170,16cyclictest19665-40apt-check07:50:090
2811899170,16cyclictest1521-21lxd11:26:410
2811899170,16cyclictest1521-21lxd11:26:410
2811899170,16cyclictest1516-21lxd12:14:410
2811899170,16cyclictest0-21swapper/009:50:170
28120991614,1cyclictest4894-21cpuspeed_turbos08:20:132
28120991614,1cyclictest17143-21ls10:35:122
28120991614,1cyclictest0-21swapper/212:20:182
28120991614,1cyclictest0-21swapper/211:40:182
28120991614,1cyclictest0-21swapper/210:55:172
28120991614,1cyclictest0-21swapper/209:25:132
28120991613,2cyclictest5592-21cpuspeed_turbos07:25:152
2812099160,1cyclictest14467-21/usr/sbin/munin07:40:152
2812099160,1cyclictest0-21swapper/211:50:052
2812099160,1cyclictest0-21swapper/207:31:032
2812099160,15cyclictest0-21swapper/212:15:162
2812099160,15cyclictest0-21swapper/211:30:102
2812099160,15cyclictest0-21swapper/211:25:152
2812099160,15cyclictest0-21swapper/211:25:152
2812099160,15cyclictest0-21swapper/210:25:022
2812099160,15cyclictest0-21swapper/209:55:152
2812099160,15cyclictest0-21swapper/208:33:342
2812099160,15cyclictest0-21swapper/208:15:162
2812099160,15cyclictest0-21swapper/208:05:132
2812099160,15cyclictest0-21swapper/207:50:022
28119991614,1cyclictest131492chrt11:21:311
28119991614,1cyclictest10550-21cat08:30:141
28119991614,1cyclictest0-21swapper/110:30:131
28119991614,1cyclictest0-21swapper/109:25:181
28119991614,1cyclictest0-21swapper/107:45:171
28119991613,2cyclictest31792-21fschecks_count11:00:141
28119991613,2cyclictest31792-21fschecks_count11:00:141
28119991613,2cyclictest2305-21fschecks_count08:15:161
28119991613,2cyclictest14331-21expr11:25:151
28119991613,2cyclictest14331-21expr11:25:151
2811999160,1cyclictest0-21swapper/108:40:131
2811999160,15cyclictest5261-21apt-config10:15:011
2811999160,15cyclictest31537-21cpuspeed_turbos10:05:131
2811999160,15cyclictest26442-21nfsd408:00:181
2811999160,15cyclictest20876-21cat12:35:131
2811999160,15cyclictest20521-21expr11:35:161
2811999160,15cyclictest0-21swapper/112:00:131
2811999160,15cyclictest0-21swapper/109:50:181
2811999160,15cyclictest0-21swapper/108:35:151
2811999160,15cyclictest0-21swapper/108:05:111
2811999160,15cyclictest0-21swapper/107:50:131
28118991615,0cyclictest0-21swapper/009:05:560
28118991614,1cyclictest0-21swapper/010:55:150
28118991614,1cyclictest0-21swapper/010:50:170
28118991614,1cyclictest0-21swapper/010:35:160
28118991614,1cyclictest0-21swapper/010:20:010
28118991614,1cyclictest0-21swapper/008:50:110
28118991614,1cyclictest0-21swapper/008:47:210
28118991614,1cyclictest0-21swapper/007:49:310
28118991614,1cyclictest0-21swapper/007:10:420
28118991613,2cyclictest23350-21iwlist10:45:150
28118991613,2cyclictest18313-21fschecks_count12:30:130
2811899160,1cyclictest830-21smtp07:17:100
2811899160,1cyclictest0-21swapper/007:30:150
2811899160,15cyclictest426-21systemd-udevd12:08:520
2811899160,15cyclictest399-20systemd-journal11:10:060
2811899160,15cyclictest3593-21timerandwakeup11:05:210
2811899160,15cyclictest23399-21irqstats07:55:170
2811899160,15cyclictest23399-21irqstats07:55:170
2811899160,15cyclictest15052-21latency10:30:160
2811899160,15cyclictest0-21swapper/010:40:130
2811899160,15cyclictest0-21swapper/010:25:190
2811899160,15cyclictest0-21swapper/009:55:160
2811899160,15cyclictest0-21swapper/009:25:140
2811899160,15cyclictest0-21swapper/007:35:160
2811899160,15cyclictest0-21swapper/007:25:150
2811999150,1cyclictest0-21swapper/111:45:211
2811999150,15cyclictest0-21swapper/107:30:151
2811999150,14cyclictest0-21swapper/108:25:151
28118991514,1cyclictest0-21swapper/008:00:140
2811899150,1cyclictest0-21swapper/009:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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