Force Firefox to use RAM as cache only

[LL231]

I have 2.5GB of RAM on my system. I would like to know if it is possible to allocate say 512MB of RAM exclusively for Firefox's cache. Firefox would not use the HDD for caching at all. I understand that even if you set disk cache to zero in FF it will still use the disk cache to some extent.

I don't want to configure a separate Ramdisk. I have found apps to configure Ramdisks on Windows XP to be troublesome or lacking. I'm looking for a plug-and-play system here. Is this possible, or is it something the FF team might consider for a future version.

This way I wouldn't have to worry about hard drive space being eaten up.

[steviex]

Type about:config into the Location Bar

Set these preferences to these values....

browser.cache.disk.enable to False
browser.cache.memory.enable to True

[LL231]

Does the options dialog not do that anyway?

I was wondering about pre-allocating say 512MB of RAM for the cache.

[Bluefang]

I was wondering about pre-allocating say 512MB of RAM for the cache.

Memory is allocated as needed. If you want to have the equivalent of disk cache in RAM then you'll need to use a RAMDisk.

[Alan Baxter]

Setting the browser.cache.memory.capacity pref to 512000 might help.
http://kb.mozillazine.org/Browser.cache.memory.capacity
You might have to create it in about:config with right-click > New > Integer

[Fluffer]

http://lifehacker.com/5688295/speed-up- ... k-required