Re: Informix Performance Test

In article <34F2DE22.FD585B05@NOSPAM.KingofMyDomain.MAPSON.Segel.com>, Michael Segel <Mikey@NOSPAM.KingofMyDomain.MAPSON.Segel.com> writes > > >David Williams wrote: > >> Proably there is a spinlock/mutex on the fragment hence >> inserts into on efragment become single threaded. Remember >> the extent allocation routines MUST be protected by a mutex. > >Uhmm, >That doesn't make sense. >How often are you creating exents? > >If you are not creating a new extent, then you don't have to worry about a mutex >condition. >(At least not the one you are thinking about.) > But space allocation is like memory allocation and memory allocation involves critical sections hence a mutex must be in there somewhere. >Keep thinking. > >-Mikey > > -- David Williams Maintainer of the Informix FAQ Primary site (Beta Version) http://www.smooth1.demon.co.uk Official site http://www.iiug.org/techinfo/faq/faq_top.html I see you standin', Standin' on your own, It's such a lonely place for you, For you to be If you need a shoulder, Or if you need a friend, I'll be here standing, Until the bitter end... So don't chastise me Or think I, I mean you harm... All I ever wanted Was for you To know that I care