Can I copy large files faster without using the file cache?

Posted by Veazer on Ask Ubuntu See other posts from Ask Ubuntu or by Veazer
Published on 2012-04-17T14:37:34Z Indexed on 2012/07/03 9:23 UTC
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Filed under:

kernel

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cache

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memory-usage

After adding the preload package, my applications seem to speed up but if I copy a large file, the file cache grows by more than double the size of the file.

By transferring a single 3-4 GB virtualbox image or video file to an external drive, this huge cache seems to remove all the preloaded applications from memory, leading to increased load times and general performance drops.

Is there a way to copy large, multi-gigabyte files without caching them (i.e. bypassing the file cache)? Or a way to whitelist or blacklist specific folders from being cached?

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