On 1/7/19 7:52 PM, Andres Freund wrote: > Hi, > > On 2019-01-07 19:37:51 -0500, Tom Lane wrote: >> Andres Freund <and...@anarazel.de> writes: >>> Hm, shouldn't we extract the perfect hash generation into a perl module >>> or such? It seems that there's plenty other possible uses for it. >> Such as? > Builtin functions for one, which we'd swatted down last time round due > to gperfs defficiencies. But I think there's plenty more potential, > e.g. it'd make sense from a performance POV to use a perfect hash > function for locks on builtin objects (the hashtable for lookups therein > shows up prominently in a fair number of profiles, and they are a large > percentage of the acquistions). I'm certain there's plenty more, I've > not though too much about it. >
Yeah, this is pretty neat, >> But in any case, that sounds like a task for someone with >> more sense of Perl style than I have. > John, any chance you could help out with that... :) > If he doesn't I will. cheers andrew -- Andrew Dunstan https://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
