Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-30 Thread Eric Lowe
Just a quick note to say I haven't dropped this on the floor. Please give me some time to look into this. Nobody else on the VM team wanted to help look into this right now and I'm buried in other stuff through next week. - Eric Holger Berger wrote: On 3/24/06, Eric Lowe <[EMAIL PROTECTED]> w

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-28 Thread Holger Berger
On 3/24/06, Eric Lowe <[EMAIL PROTECTED]> wrote: > May I suggest that you propose a 64K kernel project. You'll get a +1 from > me, and you'll be off and running. Eric, Roland - I may be interested to be the project lead (with some folks from the OS labs at Tuwien the seconders) - but I prefer to d

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-24 Thread Eric Lowe
Roland Mainz wrote: Aside from the apps that broke the next largest drawback seen with the 64K prototype kernels was that when you have only 64K pages, if you touch 8K in the middle of a mmap() region you end up writing back 64K to the backing store. If you do this enough (which some apps do) you

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-23 Thread Jonathan Adams
On Fri, Mar 24, 2006 at 12:59:46AM +0100, Roland Mainz wrote: > Eric Lowe wrote: > > TANSTAAFL. > > "TANSTAAFL" = ? http://www.jargon.net/jargonfile/t/TANSTAAFL.html There Ain't No Such Thing As A Free Lunch. Cheers, - jonathan -- Jonathan Adams, Solaris Kernel Development ___

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-23 Thread Roland Mainz
Eric Lowe wrote: [snip] > Aside from the apps that broke the next largest drawback seen with the 64K > prototype kernels was that when you have only 64K pages, if you touch 8K > in the middle of a mmap() region you end up writing back 64K to the > backing store. If you do this enough (which some ap

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-08 Thread David S. Miller
From: Roland Mainz <[EMAIL PROTECTED]> Date: Wed, 08 Mar 2006 02:51:37 +0100 > http://mail.opensolaris.org/pipermail/opensolaris-discuss/2006-March/013917.html). I read that email before I replied, it was quoted in the email you originally CC:'d me on. sysconf(_SC_PAGESIZE) should return the cor

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-07 Thread Eric Lowe
David S. Miller wrote: The only thing that breaks is if apps don't call sysconf(_SC_PAGESIZE) or some similar function such as getpagesize() to obtain that information portably. .. or they make assumptions about the possible range of values. ;) Or did Solaris accidently return 8K always in so

Re: [osol-discuss] Re: RFE: /etc/system tuneable tosetthedefaultpagesize

2006-03-07 Thread Roland Mainz
"David S. Miller" wrote: > > From: Roland Mainz <[EMAIL PROTECTED]> > Date: Wed, 08 Mar 2006 02:14:25 +0100 > > > This could be very unfortunate since it limits future development (at > > least for Solaris... other operating systems like Linux are likely not > > affected, right ?). The decision m