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2025-11-19 - 10:06
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7.osadl.org (updated Wed Nov 19, 2025 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12943216311,120sleep113016-21sort19:05:241
12943216311,120sleep113016-21sort19:05:241
136209912142,72cyclictest0-21swapper/021:15:130
13620991212,43cyclictest25391-21apt-get22:10:090
136289911056,47cyclictest29464-21latency_hist00:04:382
136209910846,54cyclictest17271-21latency_hist22:49:370
136209910748,53cyclictest0-21swapper/023:00:150
136209910748,53cyclictest0-21swapper/023:00:150
13620991072,95cyclictest26002-21kworker/u17:3+rpciod00:04:570
13620991043,25cyclictest6919-21processes00:20:080
13620991042,34cyclictest3151-21sed20:14:370
13620991042,34cyclictest3151-21sed20:14:370
13620991034,29cyclictest13619-21cut19:09:390
13620991034,29cyclictest13619-21cut19:09:390
13620991032,25cyclictest9286-21grep00:24:580
13620991032,21cyclictest28389-21acpi22:14:470
136209910226,12cyclictest0-21swapper/021:41:050
136209910132,62cyclictest0-21swapper/023:39:580
136209910128,8cyclictest0-21swapper/022:05:100
136209910128,8cyclictest0-21swapper/022:05:100
136209910037,56cyclictest0-21swapper/023:50:000
13620991003,22cyclictest21662-21taskset22:55:330
136209910030,8cyclictest0-21swapper/023:06:030
13620999942,51cyclictest4731-21sh00:16:060
1362099993,41cyclictest810-21fschecks_time00:10:000
1362099993,41cyclictest810-21fschecks_time00:10:000
1362099993,30cyclictest1010-21ssh23:15:160
1362099993,24cyclictest6751-21apt-get20:25:110
1362099993,22cyclictest29666-21fschecks_count23:10:050
13620999929,8cyclictest0-21swapper/021:09:350
13620999919,23cyclictest1530-21apt-key20:09:390
1362099984,24cyclictest15212-21latency_hist19:14:370
13620999838,52cyclictest0-21swapper/023:30:090
1362099983,28cyclictest19901-21open_files19:25:080
1362099983,24cyclictest29285-21fschecks_time19:54:580
1362099983,24cyclictest29285-21fschecks_time19:54:580
13620999830,59cyclictest0-21swapper/000:39:380
13620999825,8cyclictest0-21swapper/019:40:040
1362099982,28cyclictest32388-21ssh21:27:390
13620999822,21cyclictest17401-21cat19:19:380
125172980,6sleep20-21swapper/223:35:102
13623999747,14cyclictest21031-21diskmemload00:05:181
1362099973,32cyclictest30938-21ls20:00:020
1362099973,30cyclictest19746-21sh22:00:080
13620999723,13cyclictest0-21swapper/020:49:380
13620999721,8cyclictest0-21swapper/022:25:050
13628999658,32cyclictest207-21systemd-journal21:34:332
13620999629,7cyclictest0-21swapper/020:29:590
13620999625,8cyclictest0-21swapper/021:04:350
1362099962,22cyclictest6285-21taskset22:30:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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