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Old 18.06.2021, 04:25
almostparallel almostparallel is offline
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Default Extremely slow Mega Decryption

I've got 33TB worth of ISOs to download. I'm getting 500MB/s if there are 10-14 concurrent downloads. The thing is, the decryption is really slow. I know the i/o speeds are not the bottleneck. The queue is full cause of the "Queued for decryption" entries. I just discovered concurrent decryption in the plugin settings, but that doesn't seem to help much too. When decrypting a single file, the increments range from 0.1% to 0.2% at max.

It's running on Ubuntu 20.04 if that helps. Please help. Thanks.
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Old 18.06.2021, 09:57
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Jiaz Jiaz is offline
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Decryption works on 512kb chunks in front of a 1mb read buffer.
What speed do you get?
You can check with iotop -o command
What are your system specs? Source/Destination drive are the same?
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Old 18.06.2021, 09:58
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Also please create a log, see https://support.jdownloader.org/Know...d-session-logs
and post shown logID here
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Old 18.06.2021, 10:03
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I've increased read chunk size to 2mb with next update, please check if it improves the speed
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Old 18.06.2021, 10:45
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raztoki raztoki is offline
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maybe variable based on raw filesize?
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Old 18.06.2021, 10:54
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@raztoki: more about available memory/max heap size. larger chunks only require more memory
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