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2026-04-16 - 15:07
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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 100 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
1198998564,11cyclictest0-21swapper/111:23:071
120199844,29cyclictest21470-21fschecks_time08:03:262
120199844,29cyclictest21470-21fschecks_time08:03:262
1201998368,10cyclictest1187-21cyclictest10:43:122
1201998362,10cyclictest0-21swapper/207:58:272
1201998362,10cyclictest0-21swapper/207:58:272
1198998353,20cyclictest27399-21sh08:23:041
1201998227,26cyclictest0-21swapper/210:03:032
1198998259,13cyclictest0-21swapper/108:23:301
119899821,44cyclictest3594-21ntpq09:48:351
118999828,36cyclictest15-21ksoftirqd/008:18:070
118999825,29cyclictest15-21ksoftirqd/007:03:140
118999825,29cyclictest15-21ksoftirqd/007:03:140
118999824,54cyclictest15-21ksoftirqd/011:38:340
118999822,54cyclictest15-21ksoftirqd/008:28:370
1198998156,14cyclictest0-21swapper/111:08:061
118999814,37cyclictest15-21ksoftirqd/012:08:190
1201998063,11cyclictest298-21in:imuxsock07:48:032
1201998060,9cyclictest0-21swapper/208:23:262
1189998062,12cyclictest2952-21systemd-journal09:32:240
1189998062,12cyclictest2952-21systemd-journal09:32:240
1189998062,12cyclictest1265-21ssh10:38:320
1189998059,15cyclictest21838-21threads10:18:390
1189998048,25cyclictest0-21swapper/010:48:220
1189998048,25cyclictest0-21swapper/010:48:220
118999804,33cyclictest15-21ksoftirqd/007:13:060
118999802,32cyclictest15-21ksoftirqd/008:33:390
1198997947,23cyclictest298-21in:imuxsock08:13:031
1189997962,11cyclictest11840-21ssh09:08:290
1189997960,13cyclictest2424-21threads08:43:390
1189997955,17cyclictest544-21cron08:28:040
118999794,52cyclictest15-21ksoftirqd/007:49:240
118999793,43cyclictest15-21ksoftirqd/009:39:500
1189997929,25cyclictest15-21ksoftirqd/007:57:550
1189997925,32cyclictest15-21ksoftirqd/007:24:250
118999792,44cyclictest15-21ksoftirqd/009:18:040
1189997912,53cyclictest15-21ksoftirqd/010:10:260
120199788,56cyclictest27945-21apt-get11:23:332
120199788,56cyclictest27945-21apt-get11:23:332
1201997857,14cyclictest1187-21cyclictest11:33:412
1198997861,11cyclictest19323-21ntp_offset11:08:331
1189997859,13cyclictest27402-21latency_hist11:23:070
118999782,42cyclictest15-21ksoftirqd/009:51:260
1201997761,9cyclictest0-21swapper/209:33:312
1201997754,12cyclictest12660-21latency_hist10:58:072
1189997759,12cyclictest7879-21diskmemload10:58:210
1189997759,12cyclictest7879-21diskmemload10:58:210
1189997759,12cyclictest2952-21systemd-journal12:23:020
1189997748,25cyclictest58-21kcompactd007:33:130
1189997748,25cyclictest58-21kcompactd007:33:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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