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2026-05-19 - 17:46
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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 Tue May 19, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2129299261,24cyclictest0-21swapper/108:27:151
2129299252,20cyclictest19836-21fschecks_time09:00:161
2129299242,21cyclictest22277-21fschecks_time07:10:161
2129299242,21cyclictest11612-21mii-tool12:35:181
2129299232,6cyclictest32411-21chrt09:23:181
2129299232,6cyclictest25667-21chrt12:04:171
21292992312,10cyclictest0-21swapper/108:45:151
2129299230,5cyclictest0-21swapper/112:18:301
2129299230,22cyclictest7936-21latency_hist10:35:001
2129299230,22cyclictest1093-21expr11:20:121
21292992215,6cyclictest28087-21ls10:10:201
21292992214,7cyclictest31264-21apache208:25:011
2129299221,20cyclictest7034-21cpuspeed_turbos09:35:131
2129299221,20cyclictest3983-21H222:10:211
2129299220,7cyclictest8841-21grep07:45:021
2129299220,21cyclictest863-21avahi-daemon07:45:221
2129299220,21cyclictest3976-21H222:10:211
2129299220,21cyclictest28846-21cut12:09:591
2129299220,21cyclictest21614-21uname10:00:161
2129299220,21cyclictest20527-21cut10:00:001
2129299220,21cyclictest19584-21swap11:50:201
2129299220,21cyclictest19584-21swap11:50:191
2129299220,21cyclictest17227-21if_enp1s010:50:151
2129299220,21cyclictest13325-21sed07:50:211
2129299220,21cyclictest0-21swapper/111:00:151
2129299220,21cyclictest0-21swapper/110:35:161
2129299220,21cyclictest0-21swapper/110:20:181
2129299220,21cyclictest0-21swapper/108:05:211
21288992214,7cyclictest870-21systemd-logind10:25:210
2129299211,6cyclictest0-21swapper/108:31:481
21292992114,6cyclictest21698-21sed11:55:191
21292992113,7cyclictest2294-21nfsd409:25:181
2129299211,19cyclictest24386-21cat07:15:141
2129299210,6cyclictest8085-21awk11:30:171
2129299210,6cyclictest13033-21expr11:40:141
2129299210,21cyclictest0-21swapper/109:46:471
2129299210,20cyclictest9475-21grep08:40:181
2129299210,20cyclictest4834-21chrt09:30:151
2129299210,20cyclictest31254-21wc07:25:211
2129299210,20cyclictest30288-21cut10:15:191
2129299210,20cyclictest28913-21sed07:20:211
2129299210,20cyclictest23094-21nfsd409:05:181
2129299210,20cyclictest19000-21sed09:00:021
2129299210,20cyclictest15243-21wc09:50:131
2129299210,20cyclictest14556-21tr07:55:131
2129299210,20cyclictest0-21swapper/112:26:361
2129299210,20cyclictest0-21swapper/112:20:121
2129299210,20cyclictest0-21swapper/112:15:001
2129299210,20cyclictest0-21swapper/111:45:131
2129299210,20cyclictest0-21swapper/111:36:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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