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2026-06-15 - 19:08
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Mon Jun 15, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12184992710,11cyclictest26817-21latency_hist22:30:002
1218499250,20cyclictest9304-21nfsd420:00:192
1217899230,5cyclictest0-21swapper/119:57:011
1217499230,5cyclictest0-21swapper/023:12:020
12184992222,0cyclictest0-21swapper/220:34:062
1217499226,14cyclictest0-21swapper/019:49:590
1217499220,17cyclictest0-21swapper/000:15:180
1218499214,2cyclictest23037-21grep22:20:182
1218499213,17cyclictest0-21swapper/221:00:022
12184992114,3cyclictest0-21swapper/223:45:522
12184992114,3cyclictest0-21swapper/219:51:492
1218499210,3cyclictest0-21swapper/220:25:142
1218499210,19cyclictest399-20systemd-journal20:45:002
1218499210,18cyclictest22395-21grep23:15:192
12174992121,0cyclictest0-21swapper/020:10:160
12174992113,4cyclictest0-21swapper/019:20:140
1218499203,2cyclictest15110-21expr00:00:162
1218499200,17cyclictest0-21swapper/223:00:132
1217499204,9cyclictest0-21swapper/020:25:010
12174992015,4cyclictest28379-21http_loadtime22:30:180
12174992015,4cyclictest28379-21http_loadtime22:30:170
1218499192,16cyclictest0-21swapper/221:15:592
1218499192,16cyclictest0-21swapper/221:09:582
12184991915,3cyclictest0-21swapper/223:37:192
12184991915,3cyclictest0-21swapper/200:20:522
1218499191,16cyclictest0-21swapper/221:45:012
1217899193,15cyclictest0-21swapper/119:10:131
1217899190,18cyclictest0-21swapper/121:18:541
1217899190,17cyclictest24649-21nfsd421:25:191
1217499193,1cyclictest4173-21expr20:50:130
1217499192,16cyclictest8114-21cpuspeed_turbos21:55:140
1217499192,16cyclictest29975-21cut19:40:160
12174991916,2cyclictest26616-21tlsmgr23:22:430
12174991916,2cyclictest2220-21cat00:35:130
12174991915,3cyclictest0-21swapper/019:40:020
12174991914,3cyclictest0-21swapper/021:10:520
1217499190,18cyclictest0-21swapper/020:40:140
1218499183,1cyclictest0-21swapper/219:23:382
1218499182,15cyclictest30805-21awk23:30:162
1218499182,15cyclictest224712sleep200:12:472
1218499182,15cyclictest0-21swapper/222:00:002
1218499182,15cyclictest0-21swapper/221:10:212
1218499182,15cyclictest0-21swapper/219:15:192
12184991816,1cyclictest26039-21sh23:25:002
12184991816,1cyclictest17594-21grep20:15:192
12184991815,2cyclictest31147-21latency_hist00:30:012
12184991815,2cyclictest29091-21grep20:35:212
12184991815,2cyclictest13610-21apache_processe20:10:112
12184991814,3cyclictest0-21swapper/220:06:072
1218499181,2cyclictest14631-21nfsd422:05:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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