Re: raw Vs kernel aio

In article <01bd537d$be79c270$bb3c2ba0@prn100-02-682e>, Bloomberg L.P <LOGIN_ID@bloomberg.com> writes > > >David Williams <djw@smooth1.demon.co.uk> wrote in article ><NXzCuMAuFDE1Ewdv@smooth1.demon.co.uk>... >> In article <350CE08F.44902F25@email.mot.com>, LeeKB >> <qsg0075@email.mot.com> writes >> >Yes I think you're right. I heard from this same group that UX10.20 >> >doesn't like KAIO very much. So I would suggest that you allocate enough >> >INFORMIX AIOvp for your system. >> > >> >About 2 AIOvps per disk. Use "onstat -g sch" to fine tune AIO. >> > >> Can anyone from IIUG help, can't we get HP and Informix to get >> together and fix KAIO under HP? > >What is to fix? On some architectures KAIO outperforms AIO VPs on others >it does >not. You just use what works best, no? Or am I being too pragmatic about >this? > KAIO should always be faster since it results in less context switc switches. WHy is it slower on HP? >Art S. Kagel > -- 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