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2025-08-28 - 22:21
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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 Thu Aug 28, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19487482269189,27sleep10-21swapper/107:05:491
19489382260187,58sleep00-21swapper/007:07:520
194924099199194,3cyclictest1959157-21kworker/u8:207:56:260
20329562640,5sleep00-21swapper/009:55:160
20065752610,3sleep00-21swapper/009:20:140
125899560,3rtkit-daemon1257-21rtkit-daemon10:41:520
125899520,4rtkit-daemon1257-21rtkit-daemon10:22:100
125899510,3rtkit-daemon1257-21rtkit-daemon09:11:230
194924499503,16cyclictest2103467-21latency_hist11:30:011
125899500,3rtkit-daemon1257-21rtkit-daemon10:52:441
125899490,3rtkit-daemon1257-21rtkit-daemon12:25:161
194924499484,11cyclictest2107285-21apt-key11:35:021
125899480,3rtkit-daemon1257-21rtkit-daemon11:44:221
194924499474,11cyclictest2091878-21munin-run11:15:001
194924499466,10cyclictest1998479-21diskmemload09:20:271
125899460,8rtkit-daemon2036497-21apt-get10:00:141
194924499454,14cyclictest1973415-21plymouth08:05:251
1949244994536,7cyclictest1969867-21fwupd07:56:251
194924499453,13cyclictest1972296-21cat08:05:011
194924499453,12cyclictest2115540-21grep11:45:261
194924499453,12cyclictest2103612-21cat11:30:111
1949244994412,11cyclictest2047096-21cron10:15:001
125899440,12rtkit-daemon1257-21rtkit-daemon09:43:410
19542632420,6sleep11954266-21gltestperf07:20:171
194924499423,14cyclictest2125772-21grep12:00:231
194924499423,11cyclictest2013687-21rm09:30:001
194924499413,10cyclictest2010484-21fschecks_count09:25:191
1949244994111,9cyclictest2151240-21sh12:36:291
194924499405,12cyclictest2069141-21apt-get10:45:121
194924499404,14cyclictest2082340-21ssh11:00:261
194924499404,13cyclictest2063067-21sed10:35:251
194924499404,11cyclictest2132611-21switchtime12:10:281
194924499403,13cyclictest20608752sleep110:33:191
194924499402,10cyclictest1953720-21sh07:20:001
194924499396,11cyclictest2025540-40apt-check09:45:211
194924499394,12cyclictest2085857-21ps11:05:291
194924499394,11cyclictest2095569-21apt11:20:001
194924499393,12cyclictest2030680-21sshd09:50:581
194924499388,11cyclictest1983139-21gzip08:30:241
194924499387,10cyclictest2130196-21ssh12:07:201
194924499386,8cyclictest2017556-21apt-get09:35:151
194924499386,11cyclictest1998479-21diskmemload09:10:191
194924499385,11cyclictest1961982-21apt-get07:40:061
194924499384,14cyclictest2077670-21cat10:55:151
194924499384,12cyclictest2052377-21chrt10:20:261
194924499384,11cyclictest2118990-21grep11:50:251
194924499382,16cyclictest2022896-21sshd09:40:551
194924499382,12cyclictest1995789-21sensors09:00:221
194924499382,10cyclictest1981235-21mailstats08:25:241
1949244993811,10cyclictest1988975-21if_enp2s008:45:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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