Re: CPU or NET VP Class ??

In article <924603658.18749.1.nnrp-06.c2dec9bf@news.demon.co.uk>, "Sean Kelsey" <seank@teepee.demon.co.uk> wrote: > Good morning Informixers. > > So, okay, if we change the VP class to NET, will this not slow things down > significantly for all user connections ? Can anyone point out what benefits > (if any) changing the VP class will give us and which ones do you > recommend... > > TIA as always > > Sean > Taken from Art Kagels Tech Notes Article: "Do not configure shared memory NETTYPES to use NET VPs if possible. NET VPs use polling for shared memory connections and that will spin your CPUs, tying them up. Similarly avoid TCP NETTYPES using CPU VPs for similar reasons. It increases the number of system calls per second and ties up OS services, because the CPU VPs cannot sleep while waiting for new connections and requests." I've also changed my NETTYPE setting so that the network poll thread runs on a NET VP and have seen a dramatic decrease in system calls. Try it. PS I always treat Art's word as gospel and so far, everything has been smooth sailing for me. Hope this helps. Lyzander -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own