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2026-04-03 - 21:23
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Fri Apr 03, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
534599261,6cyclictest0-21swapper/108:40:011
534599232,2cyclictest9391-21cstates09:10:141
5345992215,6cyclictest20924-21seq11:20:541
534599221,1cyclictest0-21swapper/108:23:511
534599220,4cyclictest455-21plymouthd10:24:441
534599220,2cyclictest9675-21grep07:15:161
534599220,2cyclictest4705-21nfsd411:50:171
534599220,2cyclictest24738-21expr11:30:131
534599220,2cyclictest14615-21apache_accesses09:20:101
534599220,20cyclictest0-21swapper/107:26:481
534599220,1cyclictest0-21swapper/110:40:011
534599220,1cyclictest0-21swapper/107:45:011
534599220,16cyclictest18759-21sed07:30:201
534599220,16cyclictest18759-21sed07:30:201
534599220,16cyclictest1067-21proc_pri09:50:201
534599220,14cyclictest0-21swapper/109:15:171
534599212,1cyclictest0-21swapper/108:41:051
5345992114,6cyclictest9274-21cstates10:05:151
5345992114,6cyclictest31217-21acpi07:55:111
5345992114,6cyclictest19987-21expr08:30:171
5345992114,6cyclictest19299-21vmstat09:25:211
5345992113,7cyclictest4900-21ntp_kernel_pll_09:00:181
534599210,3cyclictest12895-21sort11:09:011
534599210,2cyclictest9760-21cat12:00:121
534599210,2cyclictest6286-21expr07:10:141
534599210,2cyclictest5936-21nfsd408:05:171
534599210,2cyclictest30639-21sed10:40:201
534599210,2cyclictest24872-21awk09:35:181
534599210,2cyclictest21020-21python312:20:001
534599210,2cyclictest12138-21fschecks_count07:20:131
534599210,1cyclictest21365-21nfsd410:25:171
534599210,16cyclictest8781-21latency_hist09:10:001
534599210,15cyclictest28355-21awk11:35:161
534599210,15cyclictest0-21swapper/112:30:191
534599210,15cyclictest0-21swapper/110:50:131
534099210,20cyclictest843-21systemd-network11:48:270
5345992014,5cyclictest3954-21VM22:10:211
5345992014,5cyclictest2952-21sed11:50:001
5345992014,5cyclictest0-21swapper/111:55:131
5345992014,5cyclictest0-21swapper/110:00:181
5345992014,5cyclictest0-21swapper/109:55:211
5345992014,5cyclictest0-21swapper/109:30:021
5345992014,5cyclictest0-21swapper/108:25:141
5345992013,6cyclictest16002-21fschecks_count12:10:141
5345992013,6cyclictest0-21swapper/110:59:121
534599201,1cyclictest15476-21chrt11:11:341
534599200,2cyclictest8679-21cat08:10:181
534599200,2cyclictest455-21plymouthd07:50:121
534599200,2cyclictest29391-21chrt08:47:241
534599200,2cyclictest22869-21nfsd411:25:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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