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2026-04-13 - 17:57
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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 Mon Apr 13, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7524993323,10cyclictest0-21swapper/112:38:121
7525992515,10cyclictest0-21swapper/212:38:122
752499223,5cyclictest21-21ksoftirqd/110:24:071
752499210,20cyclictest843-21systemd-network09:11:271
752399214,16cyclictest7288-21grep10:55:230
752399214,16cyclictest27127-21grep09:40:000
7523992116,4cyclictest24596-21fschecks_time10:30:170
752399210,20cyclictest0-21swapper/008:34:340
7525992020,0cyclictest0-21swapper/208:40:012
7525992016,1cyclictest0-21swapper/208:30:202
752499200,2cyclictest32573-21iwlist08:50:171
752399204,2cyclictest2470-21ntpq11:45:190
752399203,2cyclictest32167-21expr08:50:160
752399203,2cyclictest23258-21grep11:25:170
752399203,2cyclictest23167-21python310:30:000
752399203,2cyclictest23167-21python310:30:000
752399203,16cyclictest9387-21awk07:10:200
752399203,16cyclictest30294-21sed11:40:000
752399202,17cyclictest0-21swapper/009:50:200
7523992017,2cyclictest4574-21run-parts10:50:190
7523992017,2cyclictest214002chrt09:29:090
7523992017,2cyclictest16797-21expr09:20:140
7523992017,2cyclictest14355-21uniq09:15:160
7523992017,2cyclictest11542-21cat07:15:170
7523992017,2cyclictest11412-21expr09:10:130
7523992017,2cyclictest0-21swapper/007:35:130
7523992016,3cyclictest3414-21master10:07:110
7523992016,3cyclictest28100-21sed08:40:210
7523992016,3cyclictest18219-21tr11:15:170
7523992016,3cyclictest16541-21cut11:15:000
7523992016,3cyclictest12337-21/usr/sbin/munin12:05:090
7523992016,3cyclictest0-21swapper/008:55:230
7523992015,3cyclictest0-21swapper/011:23:130
752599197,11cyclictest0-21swapper/207:27:572
7525991916,2cyclictest32226-21postgres09:45:492
752599190,18cyclictest0-21swapper/208:46:052
752499194,9cyclictest5657-21latency_hist08:05:011
752499194,1cyclictest0-21swapper/110:11:021
752499193,15cyclictest21-21ksoftirqd/111:41:051
752499192,16cyclictest21-21ksoftirqd/107:40:211
7524991917,1cyclictest0-21swapper/111:50:141
752499190,1cyclictest0-21swapper/108:55:151
752399193,2cyclictest0-21swapper/007:50:200
752399193,2cyclictest0-21swapper/007:50:200
752399193,15cyclictest0-21swapper/010:50:000
752399192,16cyclictest7159-21wc09:00:210
752399192,16cyclictest0-21swapper/012:35:160
752399192,16cyclictest0-21swapper/010:45:000
7523991916,2cyclictest7664-21if_eno111:55:160
7523991916,2cyclictest25685-21fschecks_count11:30:150
7523991916,2cyclictest18753-21/usr/sbin/munin07:30:150
7523991916,2cyclictest0-21swapper/007:20:150
7523991915,3cyclictest0-21swapper/011:40:140
7523991915,3cyclictest0-21swapper/011:00:130
7523991915,3cyclictest0-21swapper/008:15:210
7523991915,3cyclictest0-21swapper/008:10:170
7523991915,2cyclictest0-21swapper/009:40:190
752399191,17cyclictest0-21swapper/012:20:140
752399191,17cyclictest0-21swapper/012:15:150
752399191,17cyclictest0-21swapper/010:10:160
7525991816,1cyclictest0-21swapper/208:41:102
7525991815,2cyclictest2069-21systemd-udevd10:14:522
752599181,2cyclictest10525-21interrupts12:00:162
752599180,2cyclictest8045-21cron11:00:002
752599180,2cyclictest4206-21cat08:00:162
752599180,17cyclictest843-21systemd-network11:02:172
752499182,2cyclictest2872-21systemd-logind08:48:531
752499182,15cyclictest21-21ksoftirqd/108:25:151
7524991816,1cyclictest21-21ksoftirqd/112:10:031
7524991816,1cyclictest21-21ksoftirqd/109:45:231
7524991815,2cyclictest25287-21cpuspeed_turbos11:30:141
7524991815,2cyclictest19809-21fschecks_count09:25:161
7524991810,4cyclictest201rcuc/112:25:091
752499180,3cyclictest12255-21munin-plugin-st12:05:001
752499180,17cyclictest870-21systemd-logind10:26:511
752499180,17cyclictest870-21systemd-logind10:26:511
752499180,15cyclictest0-21swapper/108:10:161
752399182,15cyclictest0-21swapper/011:05:190
752399182,15cyclictest0-21swapper/010:35:200
752399182,15cyclictest0-21swapper/009:05:220
7523991815,3cyclictest0-21swapper/010:15:140
7523991815,2cyclictest6466-21perf11:55:000
7523991815,2cyclictest26554-21/usr/sbin/munin12:30:110
7523991815,2cyclictest18365-21munin-run07:30:020
7523991815,2cyclictest0-21swapper/012:10:170
7523991815,2cyclictest0-21swapper/008:25:180
7523991814,3cyclictest30850-21cut09:45:150
7523991814,3cyclictest0-21swapper/012:29:570
7523991814,3cyclictest0-21swapper/010:00:140
7523991813,4cyclictest0-21swapper/008:05:200
752399181,2cyclictest4325-21sed08:00:170
752399181,16cyclictest0-21swapper/008:45:130
752399181,16cyclictest0-21swapper/007:55:150
7525991715,1cyclictest11686-21missed_timers07:15:182
7525991714,2cyclictest993-21dbus-daemon11:40:212
7525991714,2cyclictest455-21plymouthd12:30:222
7525991714,2cyclictest3053-21systemd-logind09:10:522
7525991714,2cyclictest3053-21systemd-logind07:13:522
7525991714,2cyclictest29549-21apt-get10:40:142
7525991714,2cyclictest22224-21http_loadtime07:35:152
7525991714,2cyclictest18663-21tune2fs08:25:142
7525991714,2cyclictest1856-21systemd-udevd11:24:512
7525991714,2cyclictest15963-21fschecks_time10:15:162
7525991714,2cyclictest13700-21perf11:10:002
7525991713,3cyclictest863-21avahi-daemon08:20:202
7525991713,3cyclictest0-21swapper/209:01:272
752599171,1cyclictest0-21swapper/209:40:142
752599170,2cyclictest27136-21basename09:40:002
752599170,2cyclictest24406-21expr12:25:142
752599170,2cyclictest0-21swapper/211:25:182
752599170,16cyclictest870-21systemd-logind09:56:522
752599170,16cyclictest776-21fschecks_count07:55:152
752599170,16cyclictest6632-21grep08:05:142
752599170,16cyclictest3987-21H222:10:212
752599170,16cyclictest3083-21postgres10:07:502
752599170,16cyclictest30333-21cat07:50:142
752599170,16cyclictest30333-21cat07:50:132
752599170,16cyclictest29145-21sendmail-mta07:46:142
752599170,16cyclictest23497-21/usr/sbin/munin10:30:022
752599170,16cyclictest23497-21/usr/sbin/munin10:30:012
752599170,16cyclictest2069-21systemd-udevd11:56:512
752599170,16cyclictest18369-21pzem_energy11:15:202
752599170,16cyclictest18150-21sed09:20:222
752599170,16cyclictest14768-21proc_pri07:20:202
752499172,1cyclictest0-21swapper/107:30:201
7524991716,0cyclictest0-21swapper/108:35:001
7524991715,1cyclictest6561-21cpuspeed_turbos10:00:131
7524991715,1cyclictest0-21swapper/110:37:051
7524991714,2cyclictest28694-21grep09:40:181
7524991714,2cyclictest28118-21sendmail_mailqu12:30:221
7524991714,2cyclictest23272-21latency11:25:171
7524991714,2cyclictest16944-21sort10:15:231
752499171,1cyclictest0-21swapper/111:45:161
752499171,15cyclictest4932-21nfsd409:55:191
752499170,2cyclictest9701-21nfsd411:00:171
752499170,2cyclictest7971-21grep07:10:131
752499170,2cyclictest23969-21sendmail07:40:011
752499170,2cyclictest2007-21systemd-journal07:18:451
752499170,2cyclictest18294-21chrt07:29:281
752499170,2cyclictest1457-21processes10:45:211
752499170,1cyclictest0-21swapper/110:40:151
752499170,1cyclictest0-21swapper/108:05:211
752499170,16cyclictest6123-21expr10:55:151
752499170,16cyclictest399-20systemd-journal11:59:561
752499170,16cyclictest25623-21bounce08:38:461
752499170,16cyclictest23530-21latency_hist12:25:001
752499170,16cyclictest21894-21cron11:25:011
752499170,15cyclictest0-21swapper/108:20:181
752399172,1cyclictest0-21swapper/010:20:140
752399172,1cyclictest0-21swapper/007:45:140
7523991714,2cyclictest0-21swapper/009:55:140
7523991713,3cyclictest0-21swapper/009:30:200
752399171,15cyclictest101rcuc/008:35:130
752399170,17cyclictest0-21swapper/012:01:360
752399170,16cyclictest0-21swapper/007:40:160
7525991614,1cyclictest455-21plymouthd10:45:102
7525991614,1cyclictest0-21swapper/211:50:202
7525991614,1cyclictest0-21swapper/211:10:192
7525991614,1cyclictest0-21swapper/210:50:162
7525991614,1cyclictest0-21swapper/210:35:122
7525991614,1cyclictest0-21swapper/209:50:142
7525991614,1cyclictest0-21swapper/208:15:212
7525991614,1cyclictest0-21swapper/207:40:132
7525991613,2cyclictest2688-21ls08:55:152
7525991613,2cyclictest18329-21gpgv12:15:012
7525991613,2cyclictest16644-21smartctl12:10:182
752599160,1cyclictest0-21swapper/210:20:162
752599160,15cyclictest6880-21expr10:00:132
752599160,15cyclictest455-21plymouthd11:45:132
752599160,15cyclictest23740-21dpkg10:30:012
752599160,15cyclictest21866-21taskset09:30:042
752599160,15cyclictest18753-21/usr/sbin/munin07:30:112
752599160,15cyclictest11898-21latency_hist08:15:002
752599160,15cyclictest0-21swapper/212:20:192
752599160,15cyclictest0-21swapper/211:35:162
752599160,15cyclictest0-21swapper/211:30:142
752599160,15cyclictest0-21swapper/209:25:192
752599160,15cyclictest0-21swapper/208:50:182
7524991614,1cyclictest5340-21dpkg09:00:111
7524991614,1cyclictest27150-21mii-tool08:40:151
7524991614,1cyclictest0-21swapper/109:15:141
7524991614,1cyclictest0-21swapper/109:05:031
7524991614,1cyclictest0-21swapper/108:15:141
7524991614,1cyclictest0-21swapper/107:50:161
7524991614,1cyclictest0-21swapper/107:50:151
7524991613,2cyclictest21874-21/usr/sbin/munin09:30:141
7524991613,2cyclictest11438-21grep11:05:131
752499161,1cyclictest0-21swapper/109:20:161
752499161,15cyclictest21-21ksoftirqd/109:35:171
752499160,2cyclictest14080-21/usr/sbin/munin11:10:161
752499160,1cyclictest0-21swapper/111:15:161
752499160,15cyclictest590-21cpu09:50:131
752499160,15cyclictest28351-21cut07:45:181
752499160,15cyclictest18179-21apt-config12:15:011
752499160,15cyclictest114122chrt10:05:211
752499160,15cyclictest0-21swapper/112:05:131
752499160,15cyclictest0-21swapper/111:35:131
752499160,15cyclictest0-21swapper/110:50:141
752499160,15cyclictest0-21swapper/110:30:191
752499160,15cyclictest0-21swapper/107:55:141
752499160,15cyclictest0-21swapper/107:20:161
7523991614,1cyclictest0-21swapper/008:20:170
7525991513,1cyclictest0-21swapper/209:15:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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