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2026-06-05 - 15:42
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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 Jun 05, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17715992414,0cyclictest0-21swapper/210:45:152
1771399241,19cyclictest31613-21latency_hist09:30:010
1771399235,10cyclictest0-21swapper/010:50:590
1771399220,18cyclictest0-21swapper/007:44:420
17715992118,2cyclictest26139-21sh10:15:012
1771399213,11cyclictest5336-21python309:40:000
1771599202,2cyclictest30382-21taskset11:15:192
1771599202,1cyclictest0-21swapper/207:58:232
17715992014,5cyclictest0-21swapper/208:59:492
17715992014,5cyclictest0-21swapper/208:59:492
1771599200,19cyclictest399-20systemd-journal10:39:002
1771599200,17cyclictest0-21swapper/208:45:222
1771499204,15cyclictest0-21swapper/111:20:361
1771399200,19cyclictest399-20systemd-journal08:39:560
1771599193,1cyclictest0-21swapper/210:43:132
1771599193,15cyclictest18827-21timerandwakeup10:55:212
1771599193,15cyclictest0-21swapper/207:55:012
1771599192,2cyclictest21048-21cstates07:15:142
1771599192,16cyclictest18679-21cut07:10:152
1771599192,16cyclictest0-21swapper/212:26:042
17715991917,1cyclictest0-21swapper/210:29:592
17715991915,3cyclictest0-21swapper/209:37:212
17715991915,3cyclictest0-21swapper/209:08:382
1771599191,17cyclictest0-21swapper/210:00:012
1771599190,3cyclictest0-21swapper/211:50:132
1771599190,3cyclictest0-21swapper/209:22:472
1771599190,3cyclictest0-21swapper/207:37:152
1771599190,1cyclictest0-21swapper/212:38:062
1771599190,1cyclictest0-21swapper/211:46:402
1771599190,18cyclictest0-21swapper/211:23:492
1771499190,18cyclictest26459-21nvmesmart_nvme008:20:191
1771399193,1cyclictest12303-21missed_timers10:45:170
1771399192,1cyclictest0-21swapper/010:20:140
17713991917,1cyclictest0-21swapper/012:27:220
17713991915,3cyclictest0-21swapper/007:59:240
17713991915,2cyclictest7313-21nfsd409:40:170
1771399190,18cyclictest843-21systemd-network11:09:150
1771599182,1cyclictest19950-21https11:00:012
1771599182,15cyclictest71842sleep211:31:302
1771599182,15cyclictest71842sleep211:31:302
1771599182,15cyclictest2905-21http_loadtime11:25:152
1771599182,15cyclictest269932sleep212:07:582
1771599182,15cyclictest19043-21cpuspeed_turbos11:55:122
17715991816,1cyclictest0-21swapper/208:15:132
17715991815,2cyclictest31997-21cut12:15:182
17715991814,3cyclictest0-21swapper/211:10:202
1771599181,2cyclictest22328-21expr09:10:162
17715991812,3cyclictest0-21swapper/212:05:012
1771599181,16cyclictest5225-21basename08:40:162
1771599181,16cyclictest11507-21postgres09:50:022
1771599180,3cyclictest23921-21cat11:05:172
1771599180,3cyclictest10882-21grep11:40:122
1771599180,2cyclictest31613-21latency_hist09:30:012
1771599180,2cyclictest2609-21grep08:35:192
1771599180,2cyclictest16152-21sshd10:54:272
1771599180,1cyclictest0-21swapper/209:30:172
1771599180,17cyclictest2641-21ls07:40:142
1771599180,17cyclictest1410-21cat12:20:122
1771599180,16cyclictest20782-21nfsd408:10:172
1771599180,16cyclictest0-21swapper/208:22:572
17714991816,1cyclictest27814-21basename11:10:201
17714991814,2cyclictest16150-21grep09:00:131
1771399182,1cyclictest0-21swapper/012:05:300
1771399182,15cyclictest0-21swapper/008:10:450
17713991816,1cyclictest0-21swapper/011:21:560
17713991815,2cyclictest9989-21sendmail_mailqu10:40:190
17713991814,3cyclictest0-21swapper/011:40:100
1771399180,1cyclictest0-21swapper/011:29:160
1771399180,17cyclictest25653-21sshd07:23:170
1771399180,16cyclictest5303-21anvil08:40:160
17715991715,1cyclictest302772sleep208:28:292
17715991714,2cyclictest8377-21cron09:45:012
17715991714,2cyclictest31057-21expr08:30:122
17715991714,2cyclictest31057-21expr08:30:122
17715991714,2cyclictest28358-21fschecks_count12:10:132
17715991714,2cyclictest26892-21tune2fs07:25:152
17715991714,2cyclictest16647-21cstates08:05:152
17715991714,2cyclictest15732-21cstates09:00:122
1771599170,2cyclictest9969-21/usr/sbin/munin08:50:102
1771599170,2cyclictest5925-21df_inode07:45:162
1771599170,2cyclictest30526-21plymouth10:20:212
1771599170,2cyclictest24026-21cpuspeed_turbos09:15:152
1771599170,2cyclictest23710-21cstates10:10:112
1771599170,16cyclictest8464-21df11:35:142
1771599170,16cyclictest7926-21awk12:30:172
1771599170,16cyclictest3441-21packagekitd10:00:012
1771599170,16cyclictest2471-21/usr/sbin/munin10:30:152
1771599170,16cyclictest24628-21sed07:20:172
1771599170,16cyclictest21355-21if_eno110:05:162
1771599170,16cyclictest1521-21lxd07:32:422
1771599170,16cyclictest13906-21cstates08:00:132
1771599170,16cyclictest0-21swapper/209:40:012
1771499172,1cyclictest0-21swapper/111:46:231
17714991715,1cyclictest9934-21missed_timers09:45:171
17714991715,1cyclictest0-21swapper/107:50:181
17714991714,2cyclictest6400-21nfsd411:30:191
17714991714,2cyclictest6400-21nfsd411:30:191
17714991714,2cyclictest32001-21sed12:15:181
17714991714,2cyclictest31540-21munin-run10:25:011
17714991714,2cyclictest31032-21threads09:25:221
17714991714,2cyclictest14132-21dpkg09:55:011
17714991714,2cyclictest10534-21chrt10:42:191
17714991712,1cyclictest0-21swapper/111:26:201
1771499170,2cyclictest6565-21awk07:45:191
1771499170,2cyclictest30547-21cut08:30:011
1771499170,2cyclictest28444-21fschecks_time12:10:131
1771499170,2cyclictest17560-21cut08:05:191
1771499170,16cyclictest4182-21cut12:25:121
1771499170,16cyclictest3991-21H222:10:211
1771499170,16cyclictest32058-21expr07:35:161
1771499170,16cyclictest2723-21tr10:30:121
1771499170,16cyclictest16686-21expr11:50:131
1771499170,16cyclictest14933-21cstates09:55:131
1771499170,16cyclictest12693-21/usr/sbin/munin08:55:161
1771499170,16cyclictest12693-21/usr/sbin/munin08:55:161
1771499170,16cyclictest1085-21gdbus09:10:191
1771499170,16cyclictest0-21swapper/110:55:011
1771499170,16cyclictest0-21swapper/107:40:141
17713991716,1cyclictest9-21ksoftirqd/007:19:000
17713991715,1cyclictest0-21swapper/012:13:290
17713991714,2cyclictest365-21munin-plugin-st12:20:000
17713991714,2cyclictest30743-21cat08:30:010
17713991714,2cyclictest26821-21timerandwakeup08:20:220
17713991714,2cyclictest2007-21systemd-journal09:12:230
17713991714,2cyclictest18153-21timerwakeupswit11:50:200
17713991714,2cyclictest12852-21awk09:50:160
17713991712,4cyclictest0-21swapper/009:00:190
1771399171,15cyclictest0-21swapper/012:35:010
1771399170,2cyclictest26701-21expr09:20:130
1771399170,2cyclictest22903-21cron10:09:010
1771399170,2cyclictest1734-21sed07:39:010
1771399170,2cyclictest1069-21/usr/sbin/munin10:25:180
1771399170,1cyclictest0-21swapper/008:05:190
1771399170,16cyclictest5601-21lxd12:00:420
1771399170,16cyclictest3450-21gsd-color12:35:200
1771399170,16cyclictest32201-21expr09:30:110
1771399170,16cyclictest20883-21latency_hist09:10:010
1771399170,16cyclictest18237-21cpuspeed_turbos07:10:140
1771399170,16cyclictest1517-21lxd10:14:420
1771399170,16cyclictest14959-21awk08:00:180
17714991614,1cyclictest8827-21cat11:35:171
17714991614,1cyclictest7498-21if_enp1s012:30:151
17714991614,1cyclictest0-21swapper/111:55:151
17714991614,1cyclictest0-21swapper/111:15:211
17714991614,1cyclictest0-21swapper/110:55:021
17714991614,1cyclictest0-21swapper/110:45:171
17714991614,1cyclictest0-21swapper/110:25:131
17714991614,1cyclictest0-21swapper/110:05:171
17714991614,1cyclictest0-21swapper/109:35:171
17714991614,1cyclictest0-21swapper/108:35:211
17714991614,1cyclictest0-21swapper/108:15:131
17714991614,1cyclictest0-21swapper/108:00:011
17714991614,1cyclictest0-21swapper/107:30:131
17714991614,1cyclictest0-21swapper/107:20:131
17714991613,2cyclictest21460-21sed08:10:211
1771499160,2cyclictest8192-21latency08:45:171
1771499160,2cyclictest31732-21irqstats08:30:161
1771499160,2cyclictest31732-21irqstats08:30:161
1771499160,2cyclictest2252-21awk12:20:171
1771499160,1cyclictest22920-21apache_accesses11:05:111
1771499160,1cyclictest0-21swapper/111:40:151
1771499160,1cyclictest0-21swapper/109:30:171
1771499160,15cyclictest6768-21fschecks_time09:40:141
1771499160,15cyclictest6608-21missed_timers10:35:181
1771499160,15cyclictest3206-21JS22:10:211
1771499160,15cyclictest26175-21apache_volume10:15:101
1771499160,15cyclictest22061-21ls12:00:111
1771499160,15cyclictest20755-21apt-get07:15:121
1771499160,15cyclictest18038-21cpuspeed_turbos10:00:131
1771499160,15cyclictest14232-21hddtemp_smartct08:00:151
1771499160,15cyclictest10248-21cat08:50:131
1771499160,15cyclictest0-21swapper/112:35:131
1771499160,15cyclictest0-21swapper/111:00:171
1771499160,15cyclictest0-21swapper/110:15:001
1771499160,15cyclictest0-21swapper/109:20:151
1771499160,15cyclictest0-21swapper/109:15:171
1771499160,15cyclictest0-21swapper/109:05:131
1771499160,15cyclictest0-21swapper/107:25:171
17713991614,1cyclictest0-21swapper/011:37:230
17713991614,1cyclictest0-21swapper/011:10:210
17713991614,1cyclictest0-21swapper/010:03:050
17713991614,1cyclictest0-21swapper/009:55:160
17713991614,1cyclictest0-21swapper/008:50:160
17713991614,1cyclictest0-21swapper/008:45:200
17713991614,1cyclictest0-21swapper/008:15:130
17713991614,1cyclictest0-21swapper/007:30:170
17713991614,1cyclictest0-21swapper/007:25:150
17713991613,2cyclictest22359-21chrt11:03:250
17713991613,2cyclictest16982-21dpkg10:55:030
1771399160,1cyclictest0-21swapper/010:30:250
1771399160,1cyclictest0-21swapper/008:30:120
1771399160,1cyclictest0-21swapper/008:30:120
1771399160,15cyclictest5780-21grep10:35:140
1771399160,15cyclictest5349-21dpkg07:45:140
1771399160,15cyclictest26364-21date09:20:000
1771399160,15cyclictest19808-21cat11:55:140
1771399160,15cyclictest13874-21grep08:55:160
1771399160,15cyclictest13874-21grep08:55:160
1771399160,15cyclictest0-21swapper/012:20:120
1771399160,15cyclictest0-21swapper/011:45:130
1771399160,15cyclictest0-21swapper/011:30:150
1771399160,15cyclictest0-21swapper/011:30:150
1771399160,15cyclictest0-21swapper/011:15:130
1771399160,15cyclictest0-21swapper/010:15:120
1771499150,15cyclictest0-21swapper/107:10:151
1771399150,14cyclictest0-21swapper/009:45:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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