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Old 12.05.2021, 07:33
mav mav is offline
DSL Light User
Join Date: Mar 2021
Posts: 32
Default Max sim. Downloads per Hoster - high CPU usage

setting maximum sim. Downloads per Hosts causes high CPU Load (100% on the JD core)
System is Windows Server 2019, OpenJDK 13.0.2 64bit, JD2 44261, CPU Xeon E5-2697v2, 256GB Ram

max. sim. Downloads 8 - per Hoster Limit 4

Just 8 sim. Downloads have CPU Load of 2-3%.

When enabling the limit and after a few completed downloads, the CPU Load of JD is stuck at 8-9% (100% / 12 Cores = 100% on single Core)

Disabling the max. sim. DL per Hoster, CPU load drops back down to 2-3% with same downloads continuing.

Oberserved this phenomenon for quite some time now.

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Old 12.05.2021, 13:17
Jiaz's Avatar
Jiaz Jiaz is offline
JD Manager
Join Date: Mar 2009
Location: Germany
Posts: 79,044

This is a known issue and happens when your settings (eg max downloads or max downloads/max per host) result in situation where JDownloader keeps looping/looking for next possible download to start.
A temporary workaround is to reduce max connection to current number of running downloads
I will try to find a better handling of this situation
JD-Dev & Server-Admin

Last edited by Jiaz; 12.05.2021 at 13:20.
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Old 28.05.2021, 13:58
mav mav is offline
DSL Light User
Join Date: Mar 2021
Posts: 32

Thanks Jiaz. Happy to test when fixed. Maybe you could drop a quick comment here.
Currently no access to bugtracker (ongoing maintenance).
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