Re: tunning parameters for hpux 10.20 and informix

In article <360028C2.4C0D@bloomberg.net>, kagel@bloomberg.net (Art S. Kagel) wrote: > Stuyt Nick wrote: > > > > Hello, > > > > I'm wondering if someone can assist me in finding what kernel tunning > > parameters an informix server > > depends on when run from an hpux 10.20 9000/889/K460 10.20 machine > > with 1Gig of RAM and 500Mg device > > swap 600Mg memory swap. > > > > Should one also increase swap to be at least the same size of RAM?. > > This is the wrong forum for this but when I did system administration > and consulting I ALWAYS recommended between 2x and 3x memory for swap > space. Why, a well spec'd Solaris with a reasonable amount, not excessive, can run without any swap and can be configured to use virtual swap >You need AT LEAST 1x memory since UNIX System V.4 copies every > running program and its memory to swap at startup and loads it into > memory from there. How? the SVR4 pager process surely is not capable of paging vnode pages out and can only page the anonymous pages. Being pedantic the opening processes causes page faults and therefore the paging process is triggered, not the swap process. > My local sysadmins were of the 1x-2x persuasion > until I beat them over the head to increase swap to 3x and our memory > and swap problems went away. They now run 3 swap disks each 2x memory > so that one can fail. Ahh for the committment of the converted! > > Art S. Kagel > Paul Watson # I don't suffer from WF Software Ltd. # stress, I'm just Tel. (+44) 1436 674729 # a carrier Fax. (+44) 1436 678693 # www.wfsoftware.co.uk