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2026-04-10 - 22:16
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Fri Apr 10, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12776992623,2cyclictest3768-21mii-tool12:35:152
1277499250,11cyclictest0-21swapper/009:16:480
1277599230,5cyclictest0-21swapper/109:37:311
1277699220,18cyclictest0-21swapper/207:50:012
12776992114,4cyclictest0-21swapper/212:14:142
1277699210,3cyclictest0-21swapper/208:51:272
1277599212,18cyclictest0-21swapper/109:45:311
1277599210,5cyclictest0-21swapper/108:55:031
1277599210,5cyclictest0-21swapper/107:24:431
1277599210,3cyclictest0-21swapper/108:12:341
1277599210,21cyclictest0-21swapper/111:50:151
12776992018,1cyclictest0-21swapper/210:41:152
1277599202,17cyclictest0-21swapper/110:09:511
1277599202,17cyclictest0-21swapper/110:09:511
1277599201,3cyclictest5307-21sessionclean12:39:001
12776991917,1cyclictest0-21swapper/209:14:102
12776991914,2cyclictest8665-21sh08:00:012
12776991914,2cyclictest8665-21sh08:00:012
1277699191,17cyclictest0-21swapper/210:14:082
1277699190,17cyclictest0-21swapper/208:43:502
1277599193,1cyclictest20540-21sort09:15:151
1277599192,2cyclictest7151-21cut11:45:001
1277599192,16cyclictest24641-21expr10:20:131
1277599192,15cyclictest0-21swapper/109:44:521
1277599190,3cyclictest0-21swapper/112:31:191
1277599190,3cyclictest0-21swapper/109:54:211
1277599190,3cyclictest0-21swapper/109:22:341
1277599190,3cyclictest0-21swapper/108:22:271
1277599190,3cyclictest0-21swapper/108:22:271
1277599190,3cyclictest0-21swapper/108:02:091
1277499193,15cyclictest0-21swapper/010:15:270
1277499192,11cyclictest31322-21munin-run08:40:000
12774991917,1cyclictest9-21ksoftirqd/008:00:200
12774991915,3cyclictest31882-21idleruntime-cro10:35:000
1277499190,18cyclictest3871-21kernelversion12:35:160
12776991816,1cyclictest13887-21munin-run11:00:002
12776991815,2cyclictest4100-21H222:10:212
12776991814,3cyclictest21372-21sendmail_mailtr09:15:202
1277699181,2cyclictest5353-21wc08:50:012
1277699181,2cyclictest5353-21wc08:50:012
1277699181,16cyclictest0-21swapper/208:10:182
1277699180,16cyclictest843-21systemd-network09:51:202
1277599184,0cyclictest0-21swapper/110:00:151
1277599183,1cyclictest0-21swapper/107:57:521
1277599183,1cyclictest0-21swapper/107:57:521
1277599182,2cyclictest14663-21cat09:05:131
1277599182,15cyclictest16291-21df_inode12:00:111
1277599182,15cyclictest0-21swapper/107:19:561
1277599181,16cyclictest455-21plymouthd09:25:221
1277599181,16cyclictest27286-21chrt11:21:071
1277599181,16cyclictest19659-21nfsd412:05:161
1277599181,15cyclictest682-21http_loadtime07:45:141
1277599181,15cyclictest0-21swapper/108:53:181
1277599180,3cyclictest455-21plymouthd09:10:201
1277599180,3cyclictest455-21plymouthd07:35:171
1277599180,3cyclictest24005-21cut11:15:191
1277599180,3cyclictest21941-21fschecks_count12:10:131
1277599180,17cyclictest0-21swapper/111:45:131
1277599180,17cyclictest0-21swapper/111:25:231
1277599180,16cyclictest28850-21tr08:35:131
1277499182,1cyclictest0-21swapper/007:56:230
1277499182,1cyclictest0-21swapper/007:56:230
12774991816,1cyclictest0-21swapper/009:55:150
12774991816,1cyclictest0-21swapper/007:13:280
12774991815,2cyclictest29098-21chrt12:24:490
12776991715,1cyclictest0-21swapper/211:50:002
12776991715,1cyclictest0-21swapper/211:10:132
12776991715,1cyclictest0-21swapper/207:10:142
12776991714,2cyclictest4767-21/usr/sbin/munin09:45:112
12776991714,2cyclictest23686-21awk10:20:012
12776991714,2cyclictest18552-21chrt07:20:092
12776991714,2cyclictest16041-21cpuspeed_turbos07:15:122
12776991714,2cyclictest14694-21threads11:55:182
12776991714,1cyclictest0-21swapper/210:25:142
1277699171,1cyclictest9296-21expr08:00:142
1277699171,1cyclictest0-21swapper/210:20:132
1277699171,15cyclictest3981-21H222:10:212
1277699170,2cyclictest28126-21ntp_kernel_pll_07:35:182
1277699170,2cyclictest2811-21sed09:40:162
1277699170,2cyclictest26918-21cpuspeed_turbos12:20:122
1277699170,2cyclictest24698-21fschecks_count12:15:142
1277699170,2cyclictest23571-21missed_timers11:15:172
1277699170,2cyclictest19908-21proc_pri12:05:172
1277699170,2cyclictest18483-21sed08:15:182
1277699170,2cyclictest12550-21munin-run11:55:002
1277699170,16cyclictest5341-21expr11:40:132
1277699170,16cyclictest30193-21expr07:40:132
1277699170,16cyclictest29235-21expr08:35:142
1277699170,16cyclictest27373-21ntp_offset08:30:182
1277699170,16cyclictest23755-21nfsd409:20:162
1277699170,16cyclictest22723-21apache2ctl08:25:012
1277699170,16cyclictest22723-21apache2ctl08:25:002
1277699170,16cyclictest1377-21lxd09:38:412
1277699170,16cyclictest11796-21/usr/sbin/munin08:05:112
1277699170,16cyclictest0-21swapper/208:25:182
1277599170,2cyclictest9621-21latency10:50:161
1277599170,2cyclictest3193-21appstreamcli07:50:011
1277599170,2cyclictest31381-21cut11:30:131
1277599170,2cyclictest3014-21ls08:45:131
1277599170,2cyclictest3014-21ls08:45:131
1277599170,2cyclictest26361-21awk07:35:011
1277599170,2cyclictest26316-21cat08:30:131
1277599170,2cyclictest2056-21perf08:45:001
1277599170,2cyclictest19483-21cat10:10:151
1277599170,2cyclictest17411-21cron08:15:011
1277599170,2cyclictest17167-21expr11:05:141
1277599170,2cyclictest16766-21snapd09:30:181
1277599170,2cyclictest1066-21/usr/sbin/munin11:35:151
1277599170,1cyclictest0-21swapper/109:03:351
1277599170,16cyclictest6367-21expr10:45:131
1277599170,16cyclictest5180-21anvil10:40:381
1277599170,16cyclictest32271-21apache_processe10:35:121
1277599170,16cyclictest31417-21timerwakeupswit12:25:231
1277599170,16cyclictest29972-21cstates10:30:111
1277599170,16cyclictest27129-21expr12:20:121
1277599170,16cyclictest24452-21expr12:15:131
1277599170,16cyclictest23656-21cstates08:25:151
1277599170,16cyclictest21482-21cut10:15:121
1277599170,16cyclictest20703-21ls11:10:171
1277599170,16cyclictest2007-21systemd-journal07:28:331
1277599170,16cyclictest16830-21snapd10:25:331
1277599170,16cyclictest15682-21mailstats11:00:201
1277599170,16cyclictest13789-21fw_packets07:10:141
1277599170,16cyclictest12935-21sed08:05:171
1277599170,16cyclictest12593-21/usr/sbin/munin10:55:191
1277599170,16cyclictest0-21swapper/111:55:551
12774991715,1cyclictest0-21swapper/011:30:160
12774991714,2cyclictest7327-21ntpq10:45:180
12774991714,2cyclictest6186-21grep11:40:170
12774991714,2cyclictest32399-21tr12:30:120
12774991714,2cyclictest2511-21grep11:35:170
12774991714,2cyclictest24986-21kernelversion12:15:160
12774991714,2cyclictest15749-21/usr/sbin/munin09:05:200
12774991714,2cyclictest11124-21munin-plugin-st09:00:010
12774991714,2cyclictest0-21swapper/011:54:100
12774991714,2cyclictest0-21swapper/007:35:180
12774991713,3cyclictest16793-21snapd10:40:180
1277499171,15cyclictest16075-21seq07:15:130
1277499170,3cyclictest18793-21nfsd408:15:190
1277499170,2cyclictest993-21dbus-daemon07:50:210
1277499170,2cyclictest7967-21cat11:45:130
1277499170,2cyclictest25971-21fschecks_time09:25:150
1277499170,2cyclictest15339-21fschecks_count08:10:150
1277499170,1cyclictest3978-21H222:10:210
1277499170,16cyclictest32325-21cat07:45:020
1277499170,16cyclictest28160-21cpuspeed_turbos11:25:150
1277499170,16cyclictest26666-21ntp_offset11:20:170
1277499170,16cyclictest26353-21expr08:30:130
1277499170,16cyclictest25318-21awk10:20:170
1277499170,16cyclictest24286-21cat07:30:120
1277499170,16cyclictest23198-21start-stop-daem08:25:010
1277499170,16cyclictest19983-21ntp_states07:20:180
1277499170,16cyclictest14731-21sed11:55:180
1277499170,16cyclictest12884-21awk09:00:190
1277499170,16cyclictest11581-21expr10:55:150
12776991614,1cyclictest25278-21apt09:25:122
12776991614,1cyclictest0-21swapper/211:05:182
12776991614,1cyclictest0-21swapper/210:30:152
12776991614,1cyclictest0-21swapper/210:05:142
12776991614,1cyclictest0-21swapper/210:05:142
12776991613,2cyclictest32271-21apache_processe10:35:122
12776991613,2cyclictest21741-21cat07:25:152
12776991613,2cyclictest1079-21cups-browsed09:05:202
1277699160,2cyclictest30784-21grep11:30:122
1277699160,1cyclictest8945-21cat10:50:132
1277699160,1cyclictest0-21swapper/212:30:102
1277699160,1cyclictest0-21swapper/211:35:142
1277699160,1cyclictest0-21swapper/211:25:172
1277699160,1cyclictest0-21swapper/209:55:122
1277699160,15cyclictest455-21plymouthd08:55:142
1277699160,15cyclictest24206-21cpuspeed_turbos07:30:122
1277699160,15cyclictest0-21swapper/212:25:222
1277699160,15cyclictest0-21swapper/212:00:182
1277699160,15cyclictest0-21swapper/211:00:132
1277699160,15cyclictest0-21swapper/210:45:162
1277699160,15cyclictest0-21swapper/210:00:202
1277699160,15cyclictest0-21swapper/209:30:142
1277599160,2cyclictest10616-21cat09:55:141
12774991614,1cyclictest32434-21nfsd409:35:170
12774991614,1cyclictest0-21swapper/012:10:140
12774991614,1cyclictest0-21swapper/012:10:000
12774991614,1cyclictest0-21swapper/010:55:000
12774991614,1cyclictest0-21swapper/010:10:150
12774991614,1cyclictest0-21swapper/010:00:170
12774991614,1cyclictest0-21swapper/009:50:140
12774991614,1cyclictest0-21swapper/009:45:120
12774991614,1cyclictest0-21swapper/009:30:140
12774991614,1cyclictest0-21swapper/008:45:160
12774991614,1cyclictest0-21swapper/008:45:160
12774991614,1cyclictest0-21swapper/008:40:120
12774991614,1cyclictest0-21swapper/008:05:130
12774991614,1cyclictest0-21swapper/007:25:150
1277499160,1cyclictest399-20systemd-journal10:05:010
1277499160,1cyclictest399-20systemd-journal10:05:010
1277499160,1cyclictest0-21swapper/012:25:160
1277499160,15cyclictest32273-21/usr/sbin/munin10:35:120
1277499160,15cyclictest17002-21expr11:05:130
1277499160,15cyclictest16439-21munin-run11:05:000
1277499160,15cyclictest0-21swapper/012:00:120
1277499160,15cyclictest0-21swapper/010:25:180
1277499160,15cyclictest0-21swapper/009:40:200
1277499160,15cyclictest0-21swapper/009:20:140
12775991515,0cyclictest0-21swapper/107:40:071
12774991513,1cyclictest0-21swapper/011:10:120
12774991513,1cyclictest0-21swapper/008:50:200
1277499150,1cyclictest0-21swapper/011:15:130
1277499150,15cyclictest676-21smartctl07:45:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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