You can get at http://www.redbooks.ibm.com/redbooks/SG246926.html
some tips on it ..... ----- Original Message ----- From: "John Summerfield" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, August 28, 2003 5:24 PM Subject: Re: zSeries performance heavily dependent on working set size > On Thu, 28 Aug 2003, Mike Lovins wrote: > > > Could someone help me out? we are in the process of purchasing a zSeries and plan on running Linux. I recieved this email about performance problems on the zSeries due to working set size, what is the working set size? and on what size Zseries are having the problem? > > > The term working set size relates to the amount of real storage your > application needs. It might have, say, 128 Mbytes available to it, but > actively use only a small part of it. > > Ironically, Linux can perform better in a small amount of virtual > storage when run under VM: if it has 128 Mbytes it will tend to use it > all for file bufferes. > > This impacts VM and can cause excessive VM paging. The solution can be > to give it less storage, not more because this can reduce VM paging > while not causing Linux to page much more. > > It's always the case that your milage will vary. > > > -- > > > Cheers > John. > > Join the "Linux Support by Small Businesses" list at > http://mail.computerdatasafe.com.au/mailman/listinfo/lssb > Copyright John Summerfield. Reproduction prohibited. >
