Optimizing stable pages
Optimizing stable pages
Posted Dec 6, 2012 21:18 UTC (Thu) by dlang (guest, #313)In reply to: Optimizing stable pages by bjencks
Parent article: Optimizing stable pages
> If you're truly not worried about data integrity, why not just add all that disk space as swap and use tmpfs?
swap has horrible data locality, depending on how things get swapped out a single file could end up scattered all over the disk.
In addition, you approach puts the file storage directly competing with all processes in terms of memory, you may end up swapping out program data because your file storage 'seems' more important.
disk caching has a similar pressure, but the kernel knows that cache data is cache, and that it can therefor be thrown away if needed. tmpfs data isn't in that category.