at one time, was IBM recommending differently? i went to an introduction to z/VM several years ago and the instructor was recommending 4 virtual CPU's no matter how many real CPU's existed. He said that VM's multiprocessing capability was superior to linux so it was better to queue processes to VM.
> -----Original Message----- > From: Post, Mark K [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 10, 2004 5:31 PM > To: [EMAIL PROTECTED] > Subject: Re: How much $$ > > > No, it is actually a detriment to performance. > > Mark Post > > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of > Marcy Cortes > Sent: Tuesday, February 10, 2004 5:57 PM > To: [EMAIL PROTECTED] > Subject: Re: How much $$ > > > We're back to 1 processor now. > > I've always defined the Linux guests with 1 virtual CPU since > I had 1 real > licensed. Now you've got me curious... There isn't any value > to defining > more than 1 virtual CPU when you only have 1 IFL is there? > > Marcy Cortes > > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On > Behalf Of Post, > Mark K > Sent: Tuesday, February 10, 2004 11:32 > To: [EMAIL PROTECTED] > Subject: Re: [LINUX-390] How much $$ > > > I would think not. The MP effect usually guarantees that 1 > 2-processor > system is significantly less than 2 1-processor systems. The > amount of lost > capacity has decreased over the years, but it is still non-zero. > > > Mark Post > > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of > James Melin > Sent: Tuesday, February 10, 2004 2:28 PM > To: [EMAIL PROTECTED] > Subject: Re: How much $$ > > > Even though you set the weights to '1' processor, do you get better > throughput having 2 processors actually doing the work? >
