Hi, 2012/1/14 Janko Mivšek <[email protected]>: > Conclusion? Why RAM won't be just a L3 cache in a whole hiearchy of > caching from SSD up to CPU? Automatic, supported by OS or even hardware, > as CPU caches are? Then image wont be needed to be read to RAM and > snapshoted back to disk, it can be run directly from disk.
SSDs are Flash memory. The number of write cycles is limited before the memory starts to fail. Smalltalk frequently performs GC, which involves moving objects, i.e., writing. Writing is also much slower than reading, and AFAIK possible only block-wise (with a block being significantly larger than your average object). Flash file systems apply optimisations to distribute writing evenly, avoiding excessive writing in some places and consequent earlier failure. Best, Michael
