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2024-04-19 - 12:49
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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 rackcslot4.osadl.org (updated Fri Apr 19, 2024 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32885842262186,61sleep00-21swapper/019:09:450
32885342260190,55sleep10-21swapper/119:09:121
329300421020,8sleep03293007-21unixbench_multi19:15:240
159199730,3rtkit-daemon0-21swapper/021:14:020
159199670,4rtkit-daemon1590-21rtkit-daemon21:02:541
159199580,5rtkit-daemon1590-21rtkit-daemon21:35:110
33745872550,6sleep03336791-1kworker/u9:022:05:270
3288719995513,12cyclictest3386514-21python322:25:030
3288719995413,12cyclictest3343685-21ubuntu-distro-i21:20:010
328871999538,15cyclictest3332674-21sendmail21:00:010
3288719995312,21cyclictest3436604-21apt-get23:40:110
3288719995311,12cyclictest3413774-21cnf-update-db23:05:020
159199530,4rtkit-daemon1590-21rtkit-daemon23:54:451
328871999528,13cyclictest3449342-21cat00:00:010
3288719995212,11cyclictest3381063-21grep22:15:250
159199520,4rtkit-daemon1590-21rtkit-daemon00:30:180
328871999518,11cyclictest3330745-21date20:55:000
3288719995113,11cyclictest3390500-21cnf-update-db22:30:020
328871999509,10cyclictest3413524-21cat23:05:010
328871999509,10cyclictest3340025-21cron21:15:010
159199500,4rtkit-daemon1590-21rtkit-daemon20:18:490
328871999498,13cyclictest3326941-21cat20:45:010
328871999498,10cyclictest3332859-21apt-get21:00:120
33682782480,3sleep00-21swapper/021:55:280
328871999488,14cyclictest3319126-21date20:25:020
328871999487,11cyclictest33735072sleep022:05:010
159199480,4rtkit-daemon1590-21rtkit-daemon21:06:021
159199480,3rtkit-daemon1590-21rtkit-daemon20:51:481
159199480,3rtkit-daemon1590-21rtkit-daemon19:24:171
328871999478,11cyclictest3353658-21latency_hist21:35:000
328871999477,11cyclictest3297517-21cat19:30:010
3288719994714,12cyclictest3348347-21mailstats21:25:310
3288719994713,11cyclictest3304517-21mailstats19:45:240
159199470,4rtkit-daemon1590-21rtkit-daemon00:02:120
34341222460,2sleep00-21swapper/023:35:210
328871999469,15cyclictest3453679-21ntpq00:05:240
328871999469,11cyclictest3360313-21sed21:45:010
328871999468,14cyclictest3394209-21grep22:35:170
328871999468,12cyclictest3446054-21latency_hist23:55:000
3288719994613,11cyclictest673-21dbus-daemon22:50:280
3288719994612,10cyclictest3386503-21sh22:25:000
33150892450,7sleep00-21swapper/020:15:010
328871999459,10cyclictest1855330-20systemd-journal00:20:010
328871999457,16cyclictest3313099-21latency_hist20:10:010
328871999457,12cyclictest3289923-21sed19:10:250
328871999457,10cyclictest3379922-21sed22:15:010
3288719994510,9cyclictest3442810-21munin-run23:50:010
3288719994510,8cyclictest3295525-21unin-run19:25:000
3288719994510,10cyclictest3474819-21unin-run00:40:000
159199450,4rtkit-daemon1590-21rtkit-daemon20:55:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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