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2026-09-22 - 13:45
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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 Tue Sep 22, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2553099250,1cyclictest0-21swapper/023:19:070
2553099240,2cyclictest15130-21taskset19:45:430
2553099234,18cyclictest0-21swapper/019:17:190
2553099230,2cyclictest898-21postgres00:07:320
2553099230,2cyclictest29717-21timerandwakeup22:05:220
2553099230,2cyclictest29717-21timerandwakeup22:05:220
2553099230,2cyclictest22365-21ntp_states20:55:200
2553099230,2cyclictest14631-21munin-run20:45:010
2553099230,2cyclictest1114-21lldpd20:05:180
2553499225,6cyclictest0-21swapper/119:42:261
25534992222,0cyclictest0-21swapper/120:30:161
2553099222,1cyclictest0-21swapper/022:23:330
25530992217,4cyclictest0-21swapper/000:16:020
25530992217,4cyclictest0-21swapper/000:16:020
25530992214,7cyclictest5228-21chrt21:21:060
25530992213,8cyclictest6249-21expr23:20:140
25530992213,4cyclictest0-21swapper/021:15:080
2553099220,3cyclictest3989-21H222:10:210
2553099220,2cyclictest4388-21munin-run19:30:010
2553099220,2cyclictest32709-21cat23:10:130
2553099220,2cyclictest29249-21rm23:05:010
2553099220,2cyclictest22881-21dpkg23:50:140
2553099220,2cyclictest20810-21/usr/sbin/munin21:50:170
2553099220,2cyclictest19407-21sed21:50:000
2553099220,2cyclictest1827-21expr22:15:130
2553099220,2cyclictest16457-21awk20:45:190
2553099220,2cyclictest16457-21awk20:45:190
2553099220,2cyclictest12680-21taskset19:44:370
2553099220,21cyclictest4035-21H222:10:210
2553099220,1cyclictest0-21swapper/021:10:010
2553099220,1cyclictest0-21swapper/000:23:460
25530992115,5cyclictest0-21swapper/020:00:190
25530992114,5cyclictest0-21swapper/020:55:000
25530992113,7cyclictest6409-21cat21:25:120
2553099211,1cyclictest8862chrt19:20:430
2553099210,2cyclictest5717-21cupsd22:34:560
2553099210,2cyclictest29945-21cpuspeed_turbos21:10:150
2553099210,2cyclictest29489-21needreboot00:00:180
2553099210,2cyclictest28130-21grep20:10:180
2553099210,2cyclictest26001-21cat23:55:130
2553099210,2cyclictest25225-21chrt22:00:050
2553099210,2cyclictest20101-21cut23:45:000
2553099210,20cyclictest7542-21grep20:30:190
2553099210,1cyclictest52312chrt20:26:350
2553099210,1cyclictest206352chrt19:56:320
2553099210,1cyclictest14286-21sed22:35:200
2553099210,1cyclictest0-21swapper/023:35:180
2553099210,1cyclictest0-21swapper/023:05:160
2553099210,1cyclictest0-21swapper/021:37:190
2553099210,1cyclictest0-21swapper/020:39:560
2553099210,16cyclictest9951-21taskset19:39:500
2553099210,16cyclictest3983-21H222:10:210
2553099210,15cyclictest4254-21chrt00:13:170
2553099210,15cyclictest18258-21sort22:45:140
2553099210,15cyclictest11004-21perf21:35:000
25534992019,0cyclictest0-21swapper/123:31:271
25534992010,10cyclictest0-21swapper/122:10:201
2553499200,18cyclictest399-20systemd-journal22:19:561
2553099202,1cyclictest0-21swapper/023:49:310
25530992014,5cyclictest3976-21H222:10:210
25530992014,5cyclictest16977-21/usr/sbin/munin00:35:160
2553099201,18cyclictest0-21swapper/023:30:140
2553099200,2cyclictest15581-21awk21:40:180
2553099200,1cyclictest27576-21wc19:10:240
2553099200,1cyclictest16672-21nfsd422:40:180
2553099200,1cyclictest0-21swapper/022:10:150
2553099200,1cyclictest0-21swapper/000:30:180
2553099200,15cyclictest16657-21idleruntime19:50:150
2553099200,15cyclictest0-21swapper/000:25:190
25539991917,1cyclictest0-21swapper/200:16:202
25539991917,1cyclictest0-21swapper/200:16:202
25539991916,2cyclictest4099-21H222:10:212
2553999191,16cyclictest0-21swapper/223:35:132
2553999190,2cyclictest3983-21H222:10:212
2553999190,18cyclictest0-21swapper/220:34:262
2553999190,17cyclictest15892-21snapd23:40:282
2553999190,16cyclictest3987-21H222:10:212
2553999190,16cyclictest3985-21H222:10:212
2553499193,15cyclictest0-21swapper/119:56:121
25534991914,2cyclictest3989-21H222:10:211
25534991912,6cyclictest0-21swapper/100:18:151
25534991912,6cyclictest0-21swapper/100:18:151
2553499190,18cyclictest4035-21H222:10:211
2553499190,18cyclictest14545-21snapd23:00:281
2553499190,18cyclictest0-21swapper/119:33:141
2553499190,16cyclictest3976-21H222:10:211
2553099190,1cyclictest0-21swapper/020:15:160
2553099190,18cyclictest0-21swapper/021:55:150
2553099190,0cyclictest0-21swapper/022:58:100
2553999182,15cyclictest0-21swapper/223:18:412
25539991814,3cyclictest3976-21H222:10:212
25539991814,2cyclictest3987-21H222:10:212
25539991814,2cyclictest32579-21nfsd419:20:172
2553999180,3cyclictest3992-21H222:10:212
2553999180,3cyclictest3989-21H222:10:212
2553999180,2cyclictest3983-21H222:10:212
2553999180,2cyclictest3979-21H222:10:212
2553999180,17cyclictest3979-21H222:10:212
2553999180,17cyclictest20849-21bounce19:59:252
2553999180,16cyclictest4035-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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