Because bloatware and OOM killer?
On Fri, Oct 12, 2018 at 6:03 PM Fred Gleason fredg@paravelsystems.com wrote:
On Oct 12, 2018, at 12:25, Gordan Bobic gordan@redsleeve.org wrote:
Because swapping to SD card is slow, swapping to zram is fast, and zram only takes about 1/2 of the RAM that it provides. It's basically RAM compression. It works and makes a positive difference, even without exceedingly slow storage.
Right, but that begs a larger question: why swap *at all*? The whole point of virtual memory in the first place was as a performance hack to allow the processor to see a larger memory space than can be accommodated by core RAM alone. For certain workloads, in situations where one has a mass storage device upon which to place the swapped memory pages, this makes sense; but when the ‘storage device’ is the very core RAM that one is attempting to ‘extend’, it becomes a completely self-defeating exercise; complexity for the sake of complexity.
Cheers!
|----------------------------------------------------------------------| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |----------------------------------------------------------------------| | An expert is a person who avoids the small errors while he sweeps | | on to the grand fallacy. | | -- Benjamin Stolberg | |----------------------------------------------------------------------| _______________________________________________ Arm-dev mailing list Arm-dev@centos.org https://lists.centos.org/mailman/listinfo/arm-dev