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2026-04-06 - 04:46
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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 Apr 06, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2530322720,60sleep015-21ksoftirqd/019:00:260
258589912453,50cyclictest0-21swapper/022:06:130
2511421220,13chrt25113-21sendmail_mailtr19:00:231
258589911559,50cyclictest7603-21latency_hist23:03:500
25858991123,25cyclictest11051-21fschecks_time22:15:040
25858991123,25cyclictest11051-21fschecks_time22:15:040
25863991113,77cyclictest352-21runrttasks22:14:071
25863991113,77cyclictest352-21runrttasks22:14:071
258589911149,53cyclictest0-21swapper/020:34:060
25858991113,31cyclictest17907-21fschecks_count00:14:050
25858991113,31cyclictest17907-21fschecks_count00:14:050
25858991092,32cyclictest8650-21/usr/sbin/munin23:59:170
25863991083,82cyclictest27421-21df00:30:071
258589910727,11cyclictest0-21swapper/021:28:470
258589910636,11cyclictest0-21swapper/022:43:470
25858991063,48cyclictest20139-21/usr/sbin/munin23:24:220
258589910629,69cyclictest0-21swapper/023:39:170
258699910560,39cyclictest6734-21cpu21:14:032
258589910545,51cyclictest0-21swapper/021:18:490
258589910543,56cyclictest25845-21cyclictest21:20:440
258589910543,56cyclictest25845-21cyclictest21:20:440
258589910542,7cyclictest0-21swapper/023:09:080
258589910528,69cyclictest0-21swapper/022:02:000
258589910526,13cyclictest0-21swapper/021:49:090
258589910446,52cyclictest25845-21cyclictest19:44:210
25858991043,35cyclictest22618-21cut22:34:070
25858991043,35cyclictest22618-21cut22:34:070
258589910426,16cyclictest0-21swapper/020:09:220
258699910337,59cyclictest0-21swapper/221:04:222
25858991032,42cyclictest352-21runrttasks21:06:000
25858991032,33cyclictest25921-21/usr/sbin/munin20:39:220
258589910266,29cyclictest10169-21apt-key22:13:490
258589910245,50cyclictest0-21swapper/019:38:480
25858991014,34cyclictest17179-21/usr/sbin/munin22:24:200
258589910135,9cyclictest0-21swapper/020:49:070
258589910135,9cyclictest0-21swapper/020:49:070
25858991013,43cyclictest31303-21/usr/sbin/munin19:19:110
25858991013,38cyclictest26874-21/usr/sbin/munin00:28:570
25858991012,33cyclictest5663-21/usr/sbin/munin23:54:230
25858991012,33cyclictest5663-21/usr/sbin/munin23:54:230
258589910034,60cyclictest0-21swapper/021:54:110
25858991003,34cyclictest31614-21grep20:59:070
25858991003,34cyclictest31614-21grep20:59:070
25858991003,28cyclictest352-21runrttasks23:05:160
25858991002,41cyclictest11515-21latency_hist19:58:490
25858991002,36cyclictest19494-21/usr/sbin/munin21:34:210
25858991002,31cyclictest29441-21run-parts19:13:460
2585899994,31cyclictest22530-21timerandwakeup21:39:220
2585899994,31cyclictest22530-21timerandwakeup21:39:220
2585899993,37cyclictest1336-21ssh22:53:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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