Hi, On 2019-04-14 18:36:18 +0200, Tomas Vondra wrote: > I think those comparisons are cute and we did a fair amount of them when > considering a drop-in replacement for pglz, but ultimately it might be a > bit pointless because: > > (a) it very much depends on the dataset (one algorithm may work great on > one type of data, suck on another) > > (b) different systems may require different trade-offs (high ingestion > rate vs. best compression ratio) > > (c) decompression speed may be much more important > > What I'm trying to say is that we shouldn't obsess about picking one > particular algorithm too much, because it's entirely pointless. Instead, > we should probably design the system to support different compression > algorithms, ideally at column level.
I think we still need to pick a default algorithm, and realistically that's going to be used by like 95% of the users. Greetings, Andres Freund
