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2026-04-08 - 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
Characteristics of the highest latencies:
System rackdslot0.osadl.org (updated Wed Apr 08, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268299240,6cyclictest24223-21perf09:40:010
268399220,19cyclictest1142-21fschecks_time09:55:141
268299220,18cyclictest0-21swapper/007:35:210
268499210,20cyclictest843-21systemd-network08:39:462
268399210,20cyclictest843-21systemd-network11:28:231
268299214,11cyclictest12420-21cut09:20:000
268299203,16cyclictest18511-21fschecks_time12:20:130
268499193,1cyclictest27555-21missed_timers12:35:162
268499191,3cyclictest993-21dbus-daemon10:15:192
268399192,2cyclictest26515-21uname08:45:201
268399192,15cyclictest0-21swapper/109:10:281
2683991917,1cyclictest0-21swapper/108:58:341
268399190,1cyclictest0-21swapper/112:13:131
268299192,11cyclictest11145-21python307:25:010
2682991916,2cyclictest18916-21cut11:25:010
268299190,18cyclictest0-21swapper/011:09:130
268499182,15cyclictest12938-21chrt08:23:002
2684991816,1cyclictest31072-21latency09:50:172
2684991815,2cyclictest10305-21cron11:09:592
2684991815,1cyclictest0-21swapper/210:31:512
268499181,2cyclictest22944-21nfsd409:35:182
268499180,9cyclictest0-21swapper/212:18:042
268399182,15cyclictest239462sleep111:34:491
2683991814,1cyclictest0-21swapper/107:25:011
268399180,15cyclictest20587-21cat07:40:011
268299182,1cyclictest2921-21http_loadtime08:05:140
2682991814,3cyclictest20995-21python309:35:000
2682991814,3cyclictest15457-21perf09:25:010
2682991813,3cyclictest0-21swapper/009:49:590
268299181,16cyclictest993-21dbus-daemon11:45:190
268299180,16cyclictest8662-21python312:05:000
268499172,1cyclictest0-21swapper/211:50:172
2684991715,1cyclictest0-21swapper/212:05:162
2684991715,1cyclictest0-21swapper/211:31:252
2684991715,1cyclictest0-21swapper/207:55:012
2684991714,2cyclictest5553-21sendmail-mta11:56:422
2684991714,2cyclictest455-21plymouthd09:10:192
2684991714,2cyclictest4218-21kernelversion07:10:172
2684991714,2cyclictest410-21switchtime10:50:202
2684991714,2cyclictest27230-21proc_pri10:40:182
2684991714,2cyclictest26250-21awk08:45:172
2684991714,2cyclictest22864-21apache_volume10:35:122
2684991714,2cyclictest21894-21sed07:40:172
2684991714,2cyclictest2025-21sed09:55:192
2684991714,2cyclictest16135-21cron08:30:002
2684991714,2cyclictest13912-21/usr/sbin/munin07:25:222
2684991714,2cyclictest10159-21cpuspeed_turbos09:15:132
2684991714,2cyclictest0-21swapper/207:55:122
268499171,15cyclictest0-21swapper/208:50:162
268499170,2cyclictest993-21dbus-daemon09:25:202
268499170,2cyclictest9681-21cat10:10:122
268499170,2cyclictest8045-21apache_accesses08:15:112
268499170,2cyclictest5950-21fschecks_count08:10:142
268499170,2cyclictest4893-21cron08:10:012
268499170,2cyclictest29449-21chrt11:42:592
268499170,2cyclictest17240-21latency_hist10:25:012
268499170,2cyclictest17240-21latency_hist10:25:002
268499170,2cyclictest15807-21cat07:30:172
268499170,16cyclictest7646-21nfsd410:05:182
268499170,16cyclictest6855-21munin-run09:10:002
268499170,16cyclictest6004-21/usr/sbin/munin07:15:182
268499170,16cyclictest5877-21idleruntime11:00:142
268499170,16cyclictest5601-21lxd08:57:592
268499170,16cyclictest4878-21grep10:00:172
268499170,16cyclictest31126-21munin-plugin-st10:50:002
268499170,16cyclictest24958-21processes07:45:202
268499170,16cyclictest2103-21cat10:55:132
268499170,16cyclictest1671-21cron08:05:002
268499170,16cyclictest1365-21grep09:00:132
268499170,16cyclictest13143-21grep09:20:122
268499170,16cyclictest12258-21sed11:10:192
268499170,16cyclictest11145-21python307:25:012
268399172,1cyclictest0-21swapper/111:24:111
2683991714,2cyclictest3991-21H222:10:211
2683991714,2cyclictest25799-21ntpq11:35:181
2683991714,2cyclictest23324-21ls08:40:171
2683991714,2cyclictest13438-21/usr/sbin/munin11:15:101
2683991713,3cyclictest843-21systemd-network07:55:561
2683991713,3cyclictest1522-21lxd11:43:581
268399171,1cyclictest0-21swapper/111:04:271
268399171,15cyclictest0-21swapper/109:25:201
268399170,2cyclictest26864-21missed_timers10:40:161
268399170,2cyclictest25877-21grep09:40:161
268399170,2cyclictest17112-21python307:35:021
268399170,2cyclictest16598-21cut12:15:181
268399170,2cyclictest0-21swapper/109:00:141
268399170,2cyclictest0-21swapper/107:20:141
268399170,16cyclictest26351-21grep07:50:131
268399170,16cyclictest16793-21snapd08:28:051
268399170,16cyclictest1523-21lxd10:59:591
268399170,16cyclictest0-21swapper/107:45:161
2682991715,1cyclictest41282chrt10:58:110
2682991714,2cyclictest993-21dbus-daemon08:38:590
2682991714,2cyclictest8712-21latency_hist07:20:010
2682991714,2cyclictest6559-21grep08:10:170
2682991714,2cyclictest5486-21expr11:00:130
2682991714,2cyclictest3311-21expr07:10:130
2682991714,2cyclictest31226-21expr08:55:120
2682991714,2cyclictest26493-21sed10:40:140
2682991714,2cyclictest23002-21http_loadtime08:40:150
2682991714,2cyclictest2111-21cat09:00:150
2682991714,2cyclictest20766-21grep10:30:140
2682991714,2cyclictest20268-21expr11:25:170
2682991714,2cyclictest1816-21ntpq11:50:160
2682991714,2cyclictest16748-21snapd11:17:450
2682991714,2cyclictest15682-21sort12:15:140
2682991714,2cyclictest1526-21lxd12:34:000
2682991714,2cyclictest1526-21lxd12:33:590
2682991713,3cyclictest16748-21snapd07:55:050
268299171,1cyclictest80182chrt08:15:060
268299171,1cyclictest26627-21expr07:50:120
268299171,15cyclictest9-21ksoftirqd/011:38:240
268299170,2cyclictest8513-21nfsd409:10:170
268299170,2cyclictest30142-21ls10:45:210
268299170,2cyclictest24848-21ntp_kernel_err07:45:170
268299170,2cyclictest23182-21pzem_current11:30:190
268299170,2cyclictest12052-21nfsd411:10:180
268299170,16cyclictest5126-21/usr/sbin/munin11:55:200
268299170,16cyclictest362-21mailstats10:50:190
268299170,16cyclictest23028-21tr10:35:130
268299170,16cyclictest18832-21awk10:25:190
268299170,16cyclictest1300-21lxd12:35:590
268299170,16cyclictest10106-21fschecks_count12:05:160
268299170,16cyclictest0-21swapper/008:00:210
2684991614,1cyclictest6866-21grep12:00:122
2684991614,1cyclictest0-21swapper/212:25:152
2684991614,1cyclictest0-21swapper/212:10:162
2684991614,1cyclictest0-21swapper/209:45:142
2684991614,1cyclictest0-21swapper/209:40:202
2684991614,1cyclictest0-21swapper/209:30:132
2684991614,1cyclictest0-21swapper/208:30:122
2684991613,2cyclictest19050-21grep12:20:172
268499160,2cyclictest30854-21if_enp1s011:45:152
268499160,15cyclictest19431-21cat11:25:142
268499160,15cyclictest16524-21cstates11:20:132
268499160,15cyclictest13439-21acpi11:15:102
268499160,15cyclictest1-21systemd12:30:022
268499160,15cyclictest1-21systemd12:30:012
268499160,15cyclictest0-21swapper/211:35:122
268499160,15cyclictest0-21swapper/210:25:132
268499160,15cyclictest0-21swapper/208:40:182
268499160,15cyclictest0-21swapper/207:35:012
2683991615,1cyclictest0-21swapper/108:00:121
2683991614,1cyclictest27895-21apt-config08:50:011
2683991614,1cyclictest0-21swapper/110:50:161
2683991614,1cyclictest0-21swapper/110:20:211
2683991614,1cyclictest0-21swapper/110:20:201
2683991614,1cyclictest0-21swapper/110:10:111
2683991614,1cyclictest0-21swapper/109:35:021
2683991614,1cyclictest0-21swapper/109:30:161
2683991614,1cyclictest0-21swapper/108:35:131
2683991614,1cyclictest0-21swapper/108:30:161
2683991614,1cyclictest0-21swapper/108:20:151
2683991614,1cyclictest0-21swapper/108:10:211
2683991614,1cyclictest0-21swapper/107:40:161
2683991614,1cyclictest0-21swapper/107:15:141
2683991613,2cyclictest3050-21acpi07:10:101
2683991613,2cyclictest24518-21/usr/sbin/munin12:30:141
2683991613,2cyclictest24518-21/usr/sbin/munin12:30:141
268399160,2cyclictest0-21swapper/111:55:111
268399160,1cyclictest8787-21apt10:10:011
268399160,1cyclictest3450-21gsd-color11:47:151
268399160,1cyclictest0-21swapper/112:00:101
268399160,1cyclictest0-21swapper/109:09:001
268399160,15cyclictest7855-21/usr/sbin/munin11:05:101
268399160,15cyclictest3603-21cpuspeed_turbos10:00:121
268399160,15cyclictest316092chrt09:50:211
268399160,15cyclictest27369-21apt-get09:45:121
268399160,15cyclictest23394-21expr10:35:141
268399160,15cyclictest17851-21dpkg12:20:101
268399160,15cyclictest0-21swapper/112:35:171
268399160,15cyclictest0-21swapper/112:25:171
268399160,15cyclictest0-21swapper/112:05:201
268399160,15cyclictest0-21swapper/110:45:121
268399160,15cyclictest0-21swapper/110:25:171
268399160,15cyclictest0-21swapper/109:20:011
268399160,15cyclictest0-21swapper/109:15:131
268399160,15cyclictest0-21swapper/108:15:131
2682991614,1cyclictest0-21swapper/012:25:130
2682991614,1cyclictest0-21swapper/010:20:130
2682991614,1cyclictest0-21swapper/010:20:130
2682991613,2cyclictest9169-21/usr/sbin/munin10:10:170
2682991613,2cyclictest2175-21switchtime09:55:210
268299161,1cyclictest0-21swapper/009:05:220
268299161,1cyclictest0-21swapper/008:25:170
268299160,1cyclictest0-21swapper/011:40:120
268299160,15cyclictest31406-21awk09:50:180
268299160,15cyclictest25918-21/usr/sbin/munin08:45:160
268299160,15cyclictest21625-21if_err_lxdbr007:40:170
268299160,15cyclictest17207-21fschecks_count08:30:150
268299160,15cyclictest12427-21grep12:10:130
268299160,15cyclictest11145-21python307:25:010
268299160,15cyclictest0-21swapper/010:17:180
268299160,15cyclictest0-21swapper/010:05:120
268299160,15cyclictest0-21swapper/010:00:140
268299160,15cyclictest0-21swapper/009:40:130
268299160,15cyclictest0-21swapper/009:25:170
268299160,15cyclictest0-21swapper/008:20:180
268299160,15cyclictest0-21swapper/007:30:110
2683991513,1cyclictest0-21swapper/110:15:161
268399150,1cyclictest0-21swapper/111:10:181
268399150,1cyclictest0-21swapper/108:05:131
268399150,15cyclictest0-21swapper/110:30:141
268299150,1cyclictest0-21swapper/008:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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