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2026-03-16 - 04:52
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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 Mon Mar 16, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319059912766,56cyclictest31883-21cyclictest21:40:460
31924991252,87cyclictest7324-21apt-get22:00:242
106821200,3sleep2371rcuc/223:35:402
31924991113,89cyclictest13189-21df23:56:022
31905991103,23cyclictest352-21runrttasks21:21:000
31924991083,67cyclictest24944-21apt-get00:15:382
31905991086,10cyclictest0-21swapper/019:05:150
3171521070,5sleep10-21swapper/123:32:521
319059910544,55cyclictest4349-21apt-key00:35:140
319059910510,12cyclictest0-21swapper/000:03:010
31905991024,30cyclictest274442apt-key20:30:110
31905991024,30cyclictest274442apt-key20:30:110
319059910241,56cyclictest0-21swapper/023:45:090
31905991023,40cyclictest24141-21/usr/sbin/munin22:26:420
31905991023,36cyclictest11046-21diskstats22:05:290
31905991016,27cyclictest27164-21unixbench_singl22:30:470
31905991016,27cyclictest27164-21unixbench_singl22:30:470
31905991013,27cyclictest352-21runrttasks23:46:490
319059910044,51cyclictest31883-21cyclictest23:07:210
319059910036,58cyclictest0-21swapper/022:25:120
319059910036,58cyclictest0-21swapper/022:25:120
31905991003,24cyclictest3293-21latency_hist23:40:120
31905991003,23cyclictest15337-21ssh23:59:490
3191699992,30cyclictest5950-21seq23:44:461
3190599994,31cyclictest2468-21cat22:45:120
3190599993,29cyclictest352-21runrttasks00:23:250
31905999923,70cyclictest13858-21sh22:10:210
3191699982,30cyclictest29462-21seq20:35:211
3190599984,22cyclictest352-21runrttasks19:56:590
31905999733,57cyclictest0-21swapper/020:20:460
3190599973,32cyclictest4989-21latency_hist21:00:120
3190599972,21cyclictest1570-21latency19:10:200
31916999640,31cyclictest352-21runrttasks21:24:551
3190599964,31cyclictest16263-21grep19:55:130
3190599964,27cyclictest8227-21/usr/sbin/munin19:30:460
3190599964,27cyclictest8227-21/usr/sbin/munin19:30:460
3190599963,26cyclictest352-21runrttasks21:08:470
3190599963,26cyclictest352-21runrttasks00:05:580
3190599963,26cyclictest352-21runrttasks00:05:580
3191699953,31cyclictest23379-21runrttasks21:31:251
3191699952,27cyclictest20731-21seq20:08:211
3191699952,27cyclictest20731-21seq20:08:211
3190599954,84cyclictest12711-21sed23:55:140
3190599954,34cyclictest22774-21/usr/sbin/munin20:15:270
3190599954,33cyclictest20643-21/usr/sbin/munin23:15:420
3190599953,31cyclictest25041-21ssh21:35:180
3190599953,31cyclictest25041-21ssh21:35:180
3190599953,30cyclictest1734-21latency_hist20:50:120
3190599953,30cyclictest1734-21latency_hist20:50:120
31905999516,24cyclictest11625-21rm23:00:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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