Swap on SSD
frank2 at fjl.co.uk
Thu Feb 8 17:49:22 UTC 2018
On 2018-02-07 19:38, Christian Weisgerber wrote:
> On 2018-02-07, Frank Leonhardt <frank2 at fjl.co.uk> wrote:
>> There seems to be some confusion on this list about swapping and
>> Swapping is old hat. Basically when doing a context swap you wrote a
>> non-running process to a swap area to free up RAM space. We don't do
>> that anymore - we use demand paged virtual memory.
> Demand paging was introduced in UNIX 32V and entered the BSD line
> with 3BSD. That's around 1978-80, so almost forty years ago.
Yeah, but not everyone could afford an MMU until much later :-)
Did you ever run the UCSD P System? For some reason the keyboard driver
got swapped out (on to 8" Floppy) and every time you hit the keyboard
the drive went <CLUNK>.
More information about the freebsd-questions