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2026-05-27 - 16:22
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Wed May 27, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
424199290,28cyclictest0-21swapper/011:35:010
424599260,1cyclictest0-21swapper/107:40:131
424199253,4cyclictest0-21swapper/008:50:010
424199240,10cyclictest0-21swapper/012:00:140
424599231,4cyclictest0-21swapper/108:15:211
424199225,2cyclictest13708-21cron08:25:010
425099214,6cyclictest0-21swapper/209:08:512
424599212,18cyclictest0-21swapper/108:30:161
424599210,3cyclictest0-21swapper/109:28:171
4241992117,3cyclictest0-21swapper/010:10:010
425099204,15cyclictest0-21swapper/210:37:542
424199203,2cyclictest31551-21timerandwakeup09:50:210
425099194,1cyclictest0-21swapper/209:42:592
425099190,1cyclictest0-21swapper/212:05:562
425099190,18cyclictest0-21swapper/211:00:202
425099190,17cyclictest2007-21systemd-journal11:08:592
424599193,15cyclictest11417-21latency11:10:161
4245991915,2cyclictest1614-21nvmesmart_nvme009:55:191
424599190,17cyclictest0-21swapper/110:39:371
424599190,15cyclictest0-21swapper/111:20:221
424199193,2cyclictest16565-21seq10:23:300
4241991916,2cyclictest0-21swapper/012:35:180
424199190,17cyclictest0-21swapper/009:30:160
4250991816,1cyclictest32538-21nfsd408:55:202
4250991816,1cyclictest0-21swapper/211:53:542
4250991815,2cyclictest0-21swapper/208:30:122
4250991814,3cyclictest30878-21systemctl07:55:232
4250991813,4cyclictest399-20systemd-journal09:12:422
425099181,2cyclictest25644-21perf12:35:002
425099181,16cyclictest4036-21H222:10:212
425099181,16cyclictest27231-21fschecks_count07:50:152
425099180,3cyclictest863-21avahi-daemon11:15:202
425099180,17cyclictest0-21swapper/208:05:012
425099180,15cyclictest0-21swapper/208:25:142
425099180,15cyclictest0-21swapper/208:25:142
424599182,2cyclictest3978-21H222:10:211
4245991817,1cyclictest21-21ksoftirqd/108:40:101
4245991815,2cyclictest31828-21chrt09:51:431
424599181,2cyclictest22132-21turbostat10:35:001
424599181,16cyclictest12824-21ps08:20:191
424199182,15cyclictest9-21ksoftirqd/009:45:140
424199182,15cyclictest23718-21grep10:35:170
4241991815,2cyclictest7186-21date07:15:010
4241991814,3cyclictest9334-21cron07:17:000
4241991814,3cyclictest12939-21grep07:25:140
424199181,2cyclictest25807-21munin-plugin-st12:35:000
424199180,3cyclictest30511-21apt-get10:50:010
424199180,17cyclictest0-21swapper/010:10:110
4250991715,1cyclictest16855-21if_lxdbr009:25:172
4250991714,2cyclictest6704-21tune2fs10:05:132
4250991714,2cyclictest399-20systemd-journal07:25:012
4250991714,2cyclictest25621-21rm08:45:012
4250991714,2cyclictest22581-21grep11:30:162
4250991714,2cyclictest22378-21nfsd407:40:172
4250991714,2cyclictest20412-21sed09:30:202
4250991714,2cyclictest13582-21nfsd412:10:172
4250991714,2cyclictest10585-21tr09:15:122
425099171,15cyclictest17915-21cat10:25:152
425099171,15cyclictest0-21swapper/207:35:142
4250991710,6cyclictest399-20systemd-journal11:40:012
425099170,2cyclictest9674-21cat07:20:002
425099170,2cyclictest3989-21H222:10:212
425099170,2cyclictest30039-21cat09:50:132
425099170,2cyclictest22149-21awk10:35:002
425099170,2cyclictest22016-21apt.systemd.dai08:38:522
425099170,2cyclictest21809-21nfsd412:25:182
425099170,2cyclictest18509-21cut11:25:002
425099170,2cyclictest14468-21cpuspeed_turbos10:20:132
425099170,16cyclictest9835-21latency10:10:152
425099170,16cyclictest8058-21grep12:00:162
425099170,16cyclictest5404-21ntp_kernel_pll_11:55:172
425099170,16cyclictest399-20systemd-journal10:40:002
425099170,16cyclictest3976-21H222:10:212
425099170,16cyclictest3414-21master10:55:552
425099170,16cyclictest31918-21ntp_kernel_pll_11:45:172
425099170,16cyclictest29255-21fschecks_time08:50:152
425099170,16cyclictest28536-21perf12:40:002
425099170,16cyclictest28531-21which11:40:142
425099170,16cyclictest2344-21df09:00:152
425099170,16cyclictest21496-21cat09:35:122
425099170,16cyclictest1585-21grep09:55:182
425099170,16cyclictest15514-21expr12:15:122
425099170,16cyclictest15268-21seq09:21:152
425099170,16cyclictest13879-21munin-run08:25:012
425099170,16cyclictest0-21swapper/212:20:222
425099170,16cyclictest0-21swapper/211:25:182
4245991715,1cyclictest3981-21H222:10:211
4245991715,1cyclictest120822sleep107:21:581
4245991714,2cyclictest7744-21timerandwakeup10:05:201
4245991714,2cyclictest7714-21apt-get09:10:131
4245991714,2cyclictest487-21/usr/sbin/munin08:00:161
4245991714,2cyclictest3976-21H222:10:211
4245991714,2cyclictest31327-21apache_processe08:55:131
4245991714,2cyclictest26658-21munin-run09:45:001
4245991714,2cyclictest25872-21apache_accesses08:45:101
4245991714,2cyclictest2329-21df10:55:141
4245991714,2cyclictest20601-21vmstat11:25:231
4245991714,2cyclictest14506-21snapd12:37:571
4245991714,2cyclictest13187-21cpu11:15:121
4245991714,2cyclictest12750-21apache_volume07:25:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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