I'm running Debian Squeeze 6.0.5. Does the use of swap memory make my computer run slower? If so, how can I reduce the size of the swap memory after the system is already installed?
How to reduce size of swap after a system is already installed?
linux;debian;swap
You don't want to reduce it, but rather increase its lazy usage  the more clean pages are already in swap, the better, it means they can easily be set off RAM when free RAM is needed. Linux VM, though, have some weird behavior regarding swapping  intensive disk I/O (like huge file cp) can make your system swap heavily. It can be mitigated by decreasing vm.swappinness and increasing vfs_cache_pressure.