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2026-06-15 - 01:04
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Sun Jun 14, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18386662319276,29sleep10-21swapper/107:07:081
18386622317275,28sleep00-21swapper/007:07:050
199841121420,4sleep10-21swapper/111:37:541
19993632630,3sleep00-21swapper/011:39:560
179699590,32rtkit-daemon26-21ksoftirqd/109:33:590
1839044995714,11cyclictest2025109-21latency_hist12:15:010
179699520,3rtkit-daemon1795-21rtkit-daemon10:18:501
183904999499,15cyclictest1910736-21apt-get09:40:131
183904999493,28cyclictest2025721-21ssh12:15:061
183904999493,28cyclictest2025721-21ssh12:15:061
1839049994811,13cyclictest1918197-21apt-get09:50:121
20426782470,2sleep00-21swapper/012:38:060
19215102470,4chrt1921486-21/usr/sbin/munin09:55:000
20350402460,3sleep10-21swapper/112:26:561
20194372430,1sleep00-21swapper/012:05:250
19327292430,7sleep01932725-21cron10:09:590
183904499433,9cyclictest1936267-21unin-run10:15:000
1839044994318,9cyclictest1952318-21hwlatdetect10:35:160
179699430,4rtkit-daemon1795-21rtkit-daemon08:49:371
179699430,4rtkit-daemon0-21swapper/012:20:110
183904499428,10cyclictest1887956-21diskmemload11:46:210
183904499425,21cyclictest1892080-21apt-get09:15:130
183904499424,22cyclictest2013936-21apt-get12:00:080
183904499417,11cyclictest1887956-21diskmemload10:23:540
183904499415,21cyclictest1844275-21apt-get07:20:140
183904499415,13cyclictest1962904-21apt-get10:50:120
183904499414,21cyclictest2036610-21apt-get12:30:090
183904499414,21cyclictest1879718-21apt-get08:50:060
183904999404,13cyclictest1927126-21ssh10:00:321
183904999403,12cyclictest1980982-21apt-get11:15:111
1839049994014,8cyclictest1942267-21sh10:21:501
1839049994012,8cyclictest1954394-21sh10:38:071
183904499407,20cyclictest1978941-21ssh11:10:350
183904499407,18cyclictest1887956-21diskmemload09:13:290
183904499407,10cyclictest1887956-21diskmemload11:56:320
183904499405,11cyclictest1887956-21diskmemload10:30:150
183904999395,13cyclictest1875399-21runrttasks08:35:531
1839049993913,9cyclictest1976765-21sh11:08:551
183904499398,18cyclictest1982390-21ssh11:15:320
183904499397,21cyclictest1927269-21ssh10:00:530
183904499397,20cyclictest1958725-21ssh10:44:170
183904499397,17cyclictest1887956-21diskmemload10:48:220
183904499396,13cyclictest1937947-21sh10:15:340
183904499396,11cyclictest1887956-21diskmemload11:05:240
183904499395,18cyclictest1887956-21diskmemload09:45:220
183904499394,20cyclictest1846220-21apt-get07:25:130
183904499393,21cyclictest1921738-21apt-get09:55:130
183904499393,21cyclictest1861715-21apt-get08:05:100
183904499393,13cyclictest1991914-21apt-get11:30:110
183904499393,12cyclictest1999703-21apt-get11:40:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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