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2026-05-04 - 14:25
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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 rackeslot2.osadl.org (updated Mon May 04, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21236052930,2sleep30-21swapper/322:10:093
1879644993024,5cyclictest1969721-21grep20:20:010
187964499295,5cyclictest2336670-21cat00:30:010
1879644992918,9cyclictest1290-21dbus-daemon20:10:010
1879645992822,2cyclictest17350irq/127-ahci[0000:00:17.0]23:45:001
1879644992812,11cyclictest0-21swapper/021:25:350
1879644992811,13cyclictest2310891-21kthreadcore00:10:330
1879644992810,13cyclictest0-21swapper/022:10:020
1879645992724,2cyclictest0-21swapper/122:15:011
1879644992716,4cyclictest0-21swapper/021:15:280
1879644992713,9cyclictest0-21swapper/023:10:010
1879644992713,8cyclictest2163164-21kthreadcore22:35:330
1879644992712,10cyclictest0-21swapper/021:35:380
187964499269,8cyclictest2026569-21tail21:05:260
187964499269,8cyclictest2026569-21tail21:05:260
187964499269,8cyclictest0-21swapper/023:15:280
1879644992613,8cyclictest0-21swapper/021:50:020
1879644992610,9cyclictest0-21swapper/022:15:310
187964499260,2cyclictest241rcuc/022:40:240
1879645992522,2cyclictest1900754-21awk19:25:011
187964499259,11cyclictest2153655-21kworker/u16:2-rpciod22:50:230
187964499258,2cyclictest0-21swapper/021:45:010
187964499258,12cyclictest0-21swapper/023:00:230
187964499258,12cyclictest0-21swapper/000:40:000
1879644992511,8cyclictest2055111-21latency_hist21:25:010
1879644992510,7cyclictest2215195-21cstates23:10:250
1879645992415,4cyclictest134050irq/121-eno123:05:011
187964499249,8cyclictest1969997-21tail20:20:240
187964499248,5cyclictest2001584-21tail20:45:250
1879644992419,4cyclictest1938341-21systemd-run19:55:000
1879644992418,5cyclictest2290636-21sh00:00:010
1879644992410,9cyclictest0-21swapper/023:24:210
187964499239,9cyclictest0-21swapper/022:50:010
187964499238,5cyclictest0-21swapper/021:10:370
187964499238,4cyclictest2159003-21grep22:30:340
187964499238,10cyclictest0-21swapper/000:20:240
187964499237,9cyclictest0-21swapper/022:10:300
187964499237,6cyclictest0-21swapper/019:45:240
187964499237,4cyclictest1994691-21munin-run20:40:020
187964499236,5cyclictest0-21swapper/000:01:160
187964499236,2cyclictest0-21swapper/023:33:160
187964499235,6cyclictest2020311-21aten_repower_en21:00:230
187964499232,16cyclictest0-21swapper/019:11:220
187964499232,16cyclictest0-21swapper/019:11:220
187964499231,8cyclictest2268000-21apt-get23:45:230
1879644992318,4cyclictest1913248-21latency_hist19:35:000
187964499231,5cyclictest1950789-21cron20:05:000
1879644992311,2cyclictest0-21swapper/022:00:310
1879646992219,1cyclictest0-21swapper/200:20:012
187964599226,5cyclictest2073512-21kthreadcore21:35:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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