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Postings from May 2005
Uri Guttman wrote: >>>>>>"LT" == Leopold Toetsch <lt@toetsch.at> writes: > > > LT> I'm currently rewriting the hash implementation in src/hash.c. The > LT> new hash structure has just one piece of malloced memory with > LT> bucket pointers and buckets in one piece. > > here is an odd thought to add to that. since your hash is a single hunk > of ram, you could use offsets inside it instead of pointers. that means > it could be both shareable (given locks) and even writable to disk. I don't see the difference WRT shareable, but yes, the memory hunk could be written at once for freezing, which may save some cycles. More importantly it doesn't need relocation during hash_expand(), if offsets are calculated from start of mem. With some benchmarks we can see, which is better, but using offsets seems to be a good idea. > uri Thanks, leoThread Previous | Thread Next