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2026-06-09 - 02:41
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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 Jun 08, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25441991173,78cyclictest30736-21apt-get07:14:561
25415991163,58cyclictest16089-21cstates09:25:250
25415991163,58cyclictest16089-21cstates09:25:250
25415991156,34cyclictest4012-21runrttasks10:52:520
254159911231,14cyclictest0-21swapper/011:14:530
254159911158,48cyclictest25393-21cyclictest12:15:460
254159911032,15cyclictest0-21swapper/010:44:320
25415991102,53cyclictest9065-21latency11:54:570
25415991102,53cyclictest9065-21latency11:54:570
254159910934,10cyclictest0-21swapper/009:10:050
254159910934,10cyclictest0-21swapper/009:10:050
25415991084,29cyclictest1796-21seq11:43:080
254159910831,14cyclictest0-21swapper/012:24:550
25415991073,40cyclictest18974-21grep09:29:500
254159910728,17cyclictest0-21swapper/009:50:030
254159910728,17cyclictest0-21swapper/009:50:030
254419910636,40cyclictest0-21swapper/110:30:051
254159910644,55cyclictest24533-21ssh11:26:360
25415991064,26cyclictest0-21swapper/006:59:470
25415991064,26cyclictest0-21swapper/006:59:470
254159910629,22cyclictest30732-21modprobe07:14:300
254159910629,22cyclictest30732-21modprobe07:14:300
254159910612,34cyclictest22132-21if_eth009:34:540
254159910533,12cyclictest0-21swapper/011:49:510
25415991052,43cyclictest20411-21cat08:19:540
254159910436,10cyclictest0-21swapper/011:31:040
25415991042,73cyclictest352-21runrttasks07:14:590
25415991042,37cyclictest16791-21acpi08:09:400
25415991042,26cyclictest5483-21cat11:49:340
25415991042,25cyclictest28867-21sshd07:06:370
24648210414,60sleep124731-21grep06:55:161
25415991033,42cyclictest27609-21cut09:44:330
25415991033,42cyclictest27609-21cut09:44:330
25415991033,36cyclictest16241-21/usr/sbin/munin10:19:510
25415991033,36cyclictest16241-21/usr/sbin/munin10:19:510
25415991023,37cyclictest2225-21/usr/sbin/munin07:24:580
25415991013,37cyclictest29679-21/usr/sbin/munin11:35:000
25415991013,37cyclictest29679-21/usr/sbin/munin11:35:000
25415991013,36cyclictest28820-21grep09:45:080
254159910133,13cyclictest0-21swapper/012:09:330
25441991004,80cyclictest25739-21runrttasks06:59:551
25441991004,80cyclictest25739-21runrttasks06:59:551
254159910039,54cyclictest0-21swapper/008:49:460
25415991003,34cyclictest25540-21latency_hist06:59:350
25415991003,22cyclictest10400-21/usr/sbin/munin10:09:450
254159910010,34cyclictest12797-21fschecks_time09:19:510
25453999981,12cyclictest17221-21ssh10:20:062
25453999981,12cyclictest17221-21ssh10:20:062
2541599995,42cyclictest32585-21apt-get07:19:450
2541599994,38cyclictest28156-21latency_hist10:39:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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