I had an interesting discussion with 2 colleagues about the possible interest of putting the swap space of a system on a SSD.
If I consider the gain in latency that an SSD brings versus a
capacity disk - in the region of 100x - the solution seems
obvious. Swapping - or more precisely paging - must be much
faster/ with an SSD. Since RAM is expensive versus SSD, I could
even be tempted to design a system with a small amount of RAM and
a large amount of swap space on SSDs. In other words, I can ask
myself if trying to prevent my system to page is still a good
Let's try to shed some light on these questions.
Paging takes …[Read more...]