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2026-09-11 - 13:11
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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 Fri Sep 11, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3274099266,5cyclictest0-21swapper/122:20:141
3274099260,15cyclictest0-21swapper/100:25:211
3274099254,20cyclictest0-21swapper/121:18:311
3274099254,1cyclictest0-21swapper/119:18:561
3274099244,1cyclictest0-21swapper/123:15:231
3274099241,3cyclictest12896-21tr21:25:131
32740992411,8cyclictest0-21swapper/123:14:441
3274099240,2cyclictest6552-21python321:15:001
3273799244,1cyclictest0-21swapper/000:17:060
3274099232,6cyclictest0-21swapper/123:25:121
3274099232,1cyclictest10842-21uname00:10:221
3274099230,22cyclictest23554-21sessionclean23:38:581
3274099230,17cyclictest19401-21ntp_offset19:40:191
3274099230,16cyclictest29115-21ls23:45:201
3273799230,4cyclictest0-21swapper/019:15:420
3273799230,16cyclictest0-21swapper/022:52:480
3274099221,20cyclictest0-21swapper/100:21:551
32740992211,6cyclictest4258-21fschecks_time00:00:151
3274099220,4cyclictest0-21swapper/120:55:561
3274099220,2cyclictest32429-21perf23:55:011
3274099220,2cyclictest1262-21expr19:10:141
3274099220,21cyclictest23078-21cat22:40:131
3274099220,1cyclictest0-21swapper/121:35:221
3274099220,1cyclictest0-21swapper/120:35:191
3274099220,16cyclictest3450-21gsd-color20:25:171
3274099220,16cyclictest24437-21chrt20:48:151
3274099220,16cyclictest17456-21sed19:39:001
3274099220,16cyclictest11137-21latency_hist20:25:011
3274099220,15cyclictest234332chrt21:44:531
3274099220,15cyclictest0-21swapper/120:00:131
32737992214,4cyclictest0-21swapper/022:18:140
3273799220,2cyclictest993-21dbus-daemon20:40:200
3273799220,2cyclictest30103-21apache_processe23:50:120
3273799220,2cyclictest29428-21sed20:55:210
3273799220,2cyclictest18120-21cron21:35:000
3273799220,21cyclictest843-21systemd-network22:10:490
3273799220,21cyclictest29602-21chrt23:49:060
3273799220,21cyclictest24223-21awk00:35:190
3273799220,21cyclictest20096-21ls22:35:140
3273799220,21cyclictest17760-21grep00:25:130
3273799220,21cyclictest0-21swapper/019:38:010
3273799220,16cyclictest25089-21nfsd421:45:170
3273799220,16cyclictest1829-21systemd-journal00:30:050
3273799220,16cyclictest1773-21fschecks_time19:10:160
3273799220,15cyclictest0-21swapper/022:40:200
3274499210,6cyclictest870-21systemd-logind22:18:512
32740992115,5cyclictest0-21swapper/123:00:221
32740992114,6cyclictest24947-21vmstat00:35:231
32740992114,6cyclictest22135-21ntp_states19:45:181
32740992113,7cyclictest32707-21fschecks_count22:00:151
32740992113,7cyclictest25903-21postgres21:46:271
32740992113,7cyclictest20250-21sshd00:30:041
32740992113,7cyclictest12789-21wget00:15:141
3274099210,20cyclictest22086-21sessionclean22:39:001
3274099210,20cyclictest0-21swapper/123:10:001
3274099210,20cyclictest0-21swapper/121:55:201
3274099210,20cyclictest0-21swapper/121:05:011
3274099210,20cyclictest0-21swapper/100:05:131
3274099210,1cyclictest0-21swapper/121:50:141
3274099210,16cyclictest5436-21cmp20:15:001
3274099210,16cyclictest3911-21sed21:10:001
3274099210,15cyclictest8464-21find19:20:211
3274099210,15cyclictest6443-21expr22:10:131
3274099210,15cyclictest25297-21sort19:50:221
3274099210,15cyclictest0-21swapper/123:40:121
3274099210,15cyclictest0-21swapper/120:08:591
3274099210,15cyclictest0-21swapper/119:35:011
3273799212,1cyclictest23552-21sessionclean23:38:590
32737992114,6cyclictest18729-21chrt20:37:080
32737992114,6cyclictest12091-21irqstats20:25:160
3273799211,1cyclictest287982chrt21:53:490
3273799210,2cyclictest88722chrt19:20:270
3273799210,20cyclictest3754-21cut00:00:130
3273799210,20cyclictest14734-21vmstat21:25:220
3273799210,1cyclictest0-21swapper/022:24:440
3273799210,1cyclictest0-21swapper/020:50:130
3273799210,1cyclictest0-21swapper/020:50:120
3273799210,16cyclictest14484-21df20:30:150
3273799210,15cyclictest32382-21expr22:00:140
3273799210,15cyclictest29490-21cat20:00:140
3273799210,15cyclictest18306-21expr19:40:130
32740992014,5cyclictest0-21swapper/122:50:271
32740992014,5cyclictest0-21swapper/121:35:001
3274099200,1cyclictest0-21swapper/122:05:181
3274099200,19cyclictest0-21swapper/122:15:201
3274099200,19cyclictest0-21swapper/121:20:231
3274099200,19cyclictest0-21swapper/120:50:221
3274099200,19cyclictest0-21swapper/120:50:221
3274099200,15cyclictest0-21swapper/123:20:211
3274099200,0cyclictest0-21swapper/122:27:531
3274099200,0cyclictest0-21swapper/120:43:531
32737992014,5cyclictest455-21plymouthd19:45:190
32737992014,5cyclictest3979-21H222:10:210
32737992014,5cyclictest17158-21perf00:25:000
32737992014,5cyclictest13440-21smartctl23:20:140
32737992014,5cyclictest0-21swapper/019:30:200
32737992013,6cyclictest0-21swapper/023:25:200
3273799200,1cyclictest7722-21expr23:10:130
3273799200,1cyclictest0-21swapper/021:10:160
3273799200,1cyclictest0-21swapper/019:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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