Quote:
Originally Posted by AdultKing
Another good thing to do if you're a particularly intensive user of memory hungry apps is to run the purge command from the terminal bash prompt
#purge
This will clean up memory.
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That doesn't clean up memory, it releases cached files from memory. It has no positive effect because if the system needs free memory it will release the cached files on it own. The only thing you get when you run purge is your system has to read from the hard disk frequently accessed files. It will slow your system down not speed it up.
also, clearing your dns cache does not speed up your computer. It makes it do an extra network connection to resolve hostnames rather than using the cached ip address. again, slower not faster. flushing your dns cache is only useful if one of your sites just changed ip addresses and you dont want to wait for dns to trickle over.