Re: KAIO perf on HPUX

Just run up a new HP-UX10.20 K450x2CPU with 7.21 (.23 has 'code features' our 3rd party product picks up on)! I trust you saw the bit on patching for KAIO and setting SHMVIRTSIZE to SHMTOTAL to avoid further unix mallocs.?? Must admit, in a previous encarnation I ran 7.13 on DG/UX and suffered the trials of PDQ and all the rest. Ran it with all the nasty new PDQ and KAIO things turned off - ran fine after that! If it's any consolation, Slybase seems to suffer similar fates as Informix when it comes to performance! J. David Williams <djw@smooth1.demon.co.uk> wrote in article <L$zHTNAw2l4zEwna@smooth1.demon.co.uk>... > In article <5rt9pb$aq6$1@mhadf.production.compuserve.com>, Martyn > Hodgson <101330.3717@CompuServe.COM> writes > >Hi, > >We are running Online version 7.23 on a 2 processor HP machine > >(HP-UX version 10.20). The Online Instance is configured as if > >the server has just a single processor, as Informix recommend > >this is more efficient ...... > >As part of our upgrade to 7.23 I switched on Kernel Asynchronous > >IO ...... > >10 minute query took over half an hour. Clearly there is more to > >the mechanics of KAIO than I understand.......