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2026-04-16 - 23:17
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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 Thu Apr 16, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32197211410,72sleep231683-21apt-get06:58:252
12019910960,40cyclictest0-21swapper/209:18:132
1051210911,65sleep01100-21idleruntime-cro07:03:040
11989910781,17cyclictest1187-21cyclictest08:03:071
11989910781,17cyclictest1187-21cyclictest08:03:071
12019910425,34cyclictest1-21systemd07:18:052
11989910445,9cyclictest0-21swapper/109:08:261
11989910245,8cyclictest0-21swapper/109:43:061
11989910243,7cyclictest0-21swapper/111:28:411
12019910153,43cyclictest1187-21cyclictest09:53:402
12019910144,8cyclictest0-21swapper/209:38:362
11989910134,12cyclictest0-21swapper/109:04:181
12019910045,10cyclictest0-21swapper/210:38:282
11989910049,44cyclictest0-21swapper/110:18:251
11989910047,7cyclictest0-21swapper/110:03:061
11989910031,24cyclictest4609-21modprobe08:53:031
1201999832,16cyclictest0-21swapper/211:23:072
1201999768,16cyclictest27848-21kworker/u17:0-ext4-rsv-conversion10:33:072
1201999740,16cyclictest15266-21grep10:08:272
1201999733,22cyclictest7042-21ntp_kernel_pll_08:58:322
244052960,7sleep10-21swapper/110:23:301
1198999643,8cyclictest0-21swapper/111:58:201
1189999578,11cyclictest2952-21systemd-journal10:03:040
1198999414,34cyclictest6344-21wc08:58:061
1198999414,34cyclictest6344-21wc08:58:061
1201999341,13cyclictest18396-21idleruntime-cro11:08:032
120199933,40cyclictest27110-21apt-key10:28:082
1201999326,24cyclictest8887-21cstates09:04:172
1198999334,11cyclictest0-21swapper/108:42:341
1201999276,10cyclictest297-21systemd-logind12:28:042
119899923,37cyclictest30430-21fschecks_count10:33:251
1201999167,15cyclictest1187-21cyclictest10:33:212
120199913,37cyclictest12797-21cpu10:58:212
120199913,37cyclictest12797-21cpu10:58:212
1198999134,14cyclictest0-21swapper/109:45:451
1198999134,14cyclictest0-21swapper/109:45:451
1198999073,11cyclictest352-21runrttasks11:03:041
1198999073,11cyclictest352-21runrttasks11:03:041
1198999045,10cyclictest1187-21cyclictest10:44:071
1198999040,27cyclictest27694-21fschecks_count10:29:111
1189999073,11cyclictest2952-21systemd-journal10:45:250
1198998961,19cyclictest1187-21cyclictest07:18:041
1189998968,15cyclictest10041-21sh07:28:230
1201998764,13cyclictest0-21swapper/209:48:272
120199873,34cyclictest8072-21grep11:43:332
1198998767,12cyclictest0-21swapper/109:23:061
1189998765,15cyclictest6508-21sh09:53:300
1201998666,15cyclictest58-21kcompactd010:48:572
1201998666,15cyclictest58-21kcompactd010:48:572
1189998655,25cyclictest27165-21acpi10:28:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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