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2026-09-03 - 14:19
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Thu Sep 03, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
791799288,19cyclictest8922-21perf20:10:010
7926992725,1cyclictest0-21swapper/223:35:152
791799262,19cyclictest0-21swapper/023:05:000
7917992620,5cyclictest1100-21snmpd22:47:500
792399230,5cyclictest0-21swapper/120:30:011
791799238,7cyclictest29366-21/usr/sbin/munin19:45:240
7917992311,11cyclictest0-21swapper/020:19:140
791799230,5cyclictest0-21swapper/022:59:330
791799230,3cyclictest21614-21grep22:25:170
791799230,2cyclictest30815-21apt-config20:48:310
791799230,21cyclictest0-21swapper/022:10:070
791799230,1cyclictest0-21swapper/021:43:570
791799222,1cyclictest0-21swapper/000:15:140
7917992215,6cyclictest18478-21chrt19:26:480
7917992214,7cyclictest24116-21munin-run23:30:000
791799220,16cyclictest31907-21ntpq23:40:180
791799220,16cyclictest13392-21latency_hist21:15:000
791799220,16cyclictest11345-21open_inodes00:00:190
792699210,20cyclictest0-21swapper/220:29:012
792399210,3cyclictest0-21swapper/120:40:141
7917992114,6cyclictest24434-21sed21:35:010
7917992114,6cyclictest16224-21expr00:10:140
7917992114,6cyclictest0-21swapper/023:55:130
791799211,0cyclictest0-21swapper/021:15:180
791799210,2cyclictest3928-21cat20:00:130
791799210,2cyclictest3928-21cat20:00:120
791799210,2cyclictest24627-21/usr/sbin/munin20:35:220
791799210,20cyclictest0-21swapper/023:20:160
791799210,20cyclictest0-21swapper/021:25:180
791799210,20cyclictest0-21swapper/019:50:180
791799210,1cyclictest115972chrt20:14:460
791799210,1cyclictest0-21swapper/023:50:190
791799210,1cyclictest0-21swapper/021:05:140
791799210,16cyclictest6629-21awk21:00:180
791799210,15cyclictest31617-21latency_hist22:45:010
791799210,15cyclictest1765-21chrt20:54:500
791799210,15cyclictest10771-21swap22:05:200
791799210,15cyclictest0-21swapper/022:30:170
792699203,11cyclictest0-21swapper/223:06:592
792699203,11cyclictest0-21swapper/223:06:592
7917992014,5cyclictest27789-21timerwakeupswit20:40:220
7917992014,5cyclictest0-21swapper/019:15:130
7917992014,5cyclictest0-21swapper/000:24:230
7917992013,6cyclictest28369-21sed23:35:170
791799200,2cyclictest21963-21cpuspeed_turbos19:35:130
791799200,2cyclictest19083-21date21:25:010
791799200,1cyclictest0-21swapper/023:30:200
791799200,1cyclictest0-21swapper/023:15:190
791799200,1cyclictest0-21swapper/020:55:130
791799200,19cyclictest16356-21sed19:25:010
791799200,19cyclictest0-21swapper/020:30:130
791799200,19cyclictest0-21swapper/000:35:190
791799200,16cyclictest2479-21expr22:50:140
791799200,15cyclictest14996-21cpuspeed_turbos20:20:120
791799200,15cyclictest1203-21fschecks_count21:50:200
791799200,15cyclictest11231-21expr23:05:120
791799200,15cyclictest11231-21expr23:05:120
791799200,15cyclictest0-21swapper/022:20:010
791799200,15cyclictest0-21swapper/020:25:150
791799200,14cyclictest0-21swapper/022:35:130
791799200,14cyclictest0-21swapper/021:35:130
792699193,15cyclictest0-21swapper/221:27:162
7926991914,4cyclictest0-21swapper/220:45:162
7926991914,3cyclictest0-21swapper/222:59:592
792399192,2cyclictest1841-21nfsd421:50:231
792399192,16cyclictest17301-21if_lxdbr019:25:151
792399191,17cyclictest0-21swapper/122:05:171
792399190,5cyclictest0-21swapper/123:14:231
792399190,18cyclictest0-21swapper/100:26:561
7917991915,2cyclictest15006-21nvmesmart_nvme023:10:240
7917991914,5cyclictest0-21swapper/000:08:410
7917991914,4cyclictest0-21swapper/019:58:200
7917991914,4cyclictest0-21swapper/000:25:190
7917991913,5cyclictest3439-21perf23:49:590
7917991913,5cyclictest18481-21sort22:20:160
791799190,1cyclictest0-21swapper/021:45:210
791799190,18cyclictest0-21swapper/021:55:110
791799190,18cyclictest0-21swapper/019:30:130
791799190,0cyclictest0-21swapper/019:40:330
791799190,0cyclictest0-21swapper/019:12:240
7926991816,1cyclictest20698-21mailstats19:30:202
7926991815,2cyclictest27882-21nfsd400:30:182
792699180,3cyclictest15892-21snapd23:20:282
792699180,15cyclictest3989-21H222:10:212
792399182,15cyclictest23254-21processes23:25:211
7923991814,2cyclictest9406-21grep19:10:181
792399181,2cyclictest4099-21H222:10:211
792399181,2cyclictest1526-21lxd19:18:501
792399181,1cyclictest3985-21H222:10:211
792399181,16cyclictest26960-21expr22:35:181
7917991816,1cyclictest0-21swapper/022:04:060
7917991813,4cyclictest27205-21grep00:30:140
7926991716,1cyclictest28-21ksoftirqd/221:50:202
7926991715,1cyclictest2198-21/usr/sbin/munin20:55:122
7926991715,1cyclictest0-21swapper/221:25:012
7926991715,1cyclictest0-21swapper/221:16:362
7926991715,1cyclictest0-21swapper/219:48:252
7926991714,2cyclictest3979-21H222:10:212
7926991714,2cyclictest31489-21nfsd421:45:172
7926991714,2cyclictest2007-21systemd-journal23:28:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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