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2026-06-14 - 14:08
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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 Sun Jun 14, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
835299253,16cyclictest30569-21expr20:45:122
835299250,5cyclictest0-21swapper/220:52:492
835299250,24cyclictest843-21systemd-network19:14:442
835299240,18cyclictest30480-21cut23:35:182
834799244,2cyclictest0-21swapper/122:22:591
835299239,10cyclictest28774-21postgres21:38:102
8352992318,4cyclictest4035-21H222:10:212
835299230,2cyclictest27765-21expr20:40:152
835299230,22cyclictest0-21swapper/220:37:092
835299230,17cyclictest18602-21if_lxdbr000:10:192
835299230,16cyclictest29168-21cut23:35:012
835299230,16cyclictest20712-21hddtemp_smartct19:30:162
834799235,3cyclictest14225-21cat19:20:141
8347992319,3cyclictest6709-21munin-run21:00:001
8352992214,7cyclictest6872-21if_eno123:50:152
8352992214,7cyclictest0-21swapper/219:25:122
835299221,2cyclictest7960-21grep21:00:152
835299221,15cyclictest27569-21chrt22:32:572
835299221,15cyclictest0-21swapper/221:17:322
835299220,2cyclictest28367-21perf19:45:002
835299220,2cyclictest19236-21apache_volume20:25:132
835299220,21cyclictest0-21swapper/221:45:502
835299220,1cyclictest15666-21cut19:20:192
835299220,16cyclictest3976-21H222:10:212
835299220,16cyclictest21654-21ls21:25:142
835299220,16cyclictest15377-21switchtime20:15:202
835299220,16cyclictest15377-21switchtime20:15:202
835299220,15cyclictest0-21swapper/222:10:152
834799225,16cyclictest16144-21expr23:10:121
834799223,18cyclictest0-21swapper/121:25:161
8347992219,2cyclictest7458-21grep22:55:111
8347992219,2cyclictest10636-21cat20:10:001
8347992218,3cyclictest6319-21df_inode21:55:161
8347992218,3cyclictest28361-21sort21:35:201
8347992218,3cyclictest25109-21nfsd421:30:181
8347992218,3cyclictest19104-21sed23:15:141
8347992218,3cyclictest1626-21date00:40:011
8347992218,3cyclictest1626-21date00:40:011
8347992218,3cyclictest1496-21systemctl21:45:201
8347992218,3cyclictest0-21swapper/122:35:211
834799220,21cyclictest0-21swapper/123:26:581
8352992114,6cyclictest2700-21apache_processe21:50:122
8352992114,6cyclictest12769-21nfsd400:00:182
8352992114,6cyclictest0-21swapper/223:40:012
8352992114,6cyclictest0-21swapper/221:20:152
8352992114,6cyclictest0-21swapper/220:24:252
835299210,2cyclictest1833-21expr22:45:132
835299210,20cyclictest23904-21cut19:35:182
835299210,20cyclictest23209-21postgres23:22:152
835299210,20cyclictest19003-21fschecks_count23:15:142
835299210,20cyclictest0-21swapper/222:55:202
835299210,20cyclictest0-21swapper/221:30:152
835299210,1cyclictest0-21swapper/222:50:232
835299210,1cyclictest0-21swapper/222:15:192
835299210,15cyclictest8183-21cpuspeed_turbos20:05:142
834799215,15cyclictest0-21swapper/100:30:141
834799214,2cyclictest19071-21cat19:25:201
834799214,16cyclictest3401-21df_inode21:50:161
834799214,16cyclictest25671-21cat00:25:011
834799214,16cyclictest15294-21fgrep20:15:211
834799214,16cyclictest15294-21fgrep20:15:201
834799214,16cyclictest12847-21wc19:15:191
834799214,16cyclictest0-21swapper/119:55:011
834799213,17cyclictest533-21apt-config20:50:021
8347992118,2cyclictest6311-21tr23:50:131
8347992118,2cyclictest28647-21missed_timers20:40:191
8347992118,2cyclictest28221-21chrt00:29:571
8347992118,2cyclictest27498-21latency_hist20:40:001
8347992118,2cyclictest21711-21munin-plugin-st20:30:021
8347992118,2cyclictest17704-21/usr/sbin/munin00:10:231
8347992117,3cyclictest5890-21date23:50:011
8347992117,2cyclictest8024-21fschecks_time21:00:161
8345992114,3cyclictest0-21swapper/023:45:130
8352992016,3cyclictest0-21swapper/200:30:122
8352992014,5cyclictest6549-21sendmail-msp21:00:012
8352992014,5cyclictest1-21systemd19:50:022
8352992013,6cyclictest455-21plymouthd00:35:142
8352992013,6cyclictest455-21plymouthd00:35:132
8352992013,6cyclictest31459-21users21:40:212
8352992013,6cyclictest29318-21expr19:45:142
8352992013,6cyclictest23751-21expr00:20:142
8352992013,6cyclictest22231-21expr20:30:132
8352992013,6cyclictest14633-21cat23:05:212
835299200,2cyclictest7688-21cron20:05:012
835299200,1cyclictest0-21swapper/223:00:112
835299200,1cyclictest0-21swapper/222:40:182
835299200,1cyclictest0-21swapper/222:25:142
835299200,1cyclictest0-21swapper/222:25:142
835299200,1cyclictest0-21swapper/221:10:182
835299200,1cyclictest0-21swapper/219:16:312
835299200,19cyclictest3991-21H222:10:212
835299200,16cyclictest6999-21awk21:55:202
835299200,15cyclictest29023-21if_err_lxdbr022:35:172
835299200,15cyclictest0-21swapper/221:05:182
835299200,15cyclictest0-21swapper/200:25:342
835299200,14cyclictest0-21swapper/200:16:462
834799204,2cyclictest1592-21awk23:40:161
834799203,16cyclictest9338-21fschecks_time19:10:141
834799203,16cyclictest0-21swapper/123:05:141
834799203,16cyclictest0-21swapper/122:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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