Re: Poll Threads

In article <6anilu$b75$1@news.xmission.com>, Harold Luse <hluse@vth.colostate.edu> writes > > >I have a question about poll threads that some of the gurus may be able to >answer. > >We are starting to use our first multi-processor machine (specifics below) >and I don't see any evidence of it running multiple threads for a single >user. I won;t unless you run with PDQPRIORITY >0. I would start with 1 which = parallel scans. Also consider the use of fragmentation.. > The TFM is a little vague on the use of poll threads on a >multi-processor machine and I am wondering what effect poll threads will >have on performance. I would run with one poll thread per CPU VP. > >Any comments from those that know would be appreciated. > >Specifics: > >IBM RISC6000, model F50 (4x166mhz pentiums) using AIX 4.2.1.0 >Informix ODS version 7.23 UC6 > >Pertinent sections of onconfig: >NETTYPE ipcshm,1,100,CPU # Configure poll thread(s) for nettype >MULTIPROCESSOR 1 # 0 for single-proc, 1 for multi-proc >NUMCPUVPS 3 # Number of user (cpu) vps >SINGLE_CPU_VP 0 # If non-zero, limit number of vps to one> >==================================================================== >Harold Luse Phone: (970) 491-4120 >Applications Programmer Fax: (970) 491-1275 >Veterinary Teaching Hospital E-mail: hluse@vth.colostate.edu >Colorado State University >==================================================================== > -- 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