Re: KAIO on HP UX 10.20

Posted in 1998

Tony Tyrwhitt-Drake — Wed, 18 Feb 1998 17:38:13 -0000 — source: Informix-list mailing list archive (1991-1998)

Jason Harris wrote in message <34ea2543.1361877556@10.209.30.200>... >Dear All, > >Running 7.23UC6 on HP 10.20 we so far have found KAIO to be slower >than using AIO VPs. I have seen the same with HPUX 10.10 and 7.2x There is a rumour that the implementation of KAIO on HPUX is not as advertised. The rumour seems to be something to do with KAIO being implemented as an additional thread(s) within the CPU vp rather than in the kernel (?). In any event, having done some comparative tests, I would not use KAIO with HPUX, but go for an armful of AIO vps instead. YMMV