Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread Deskin Miller
On 6/5/07, Bryan Kadzban <[EMAIL PROTECTED]> wrote: > I like Dan's idea, FWIW (mention the -j option in the > text, but put a cautionary note in there saying that compile errors may > happen, and to re-try the compile without -j if they do). That's pretty much what I was thinking initially, before

Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread Bryan Kadzban
Miguel Bazdresch wrote: > I agree with all you say, but I believe you're missing something more > important than context switches: cache and bus conflicts. These are > the main reason performance suffers when a core is running more than > one active thread. Right, I kind of assumed that stuff was

Re: extrapaths.sh

2007-06-05 Thread Jonathan Oksman
On 5/27/07, Dan Nicholson <[EMAIL PROTECTED]> wrote: > > Ah, you're right. LFS used to create /opt/{bin,lib,include,...} for > you. But not anymore. > > http://www.linuxfromscratch.org/lfs/view/6.1/chapter06/creatingdirs.html > http://www.linuxfromscratch.org/lfs/view/development/chapter06/creating

Re: misc observances

2007-06-05 Thread M.Canales.es
El Lunes, 4 de Junio de 2007 02:45, Archaic escribió: > > On the vim page, where the docs are symlinked, a hardcoded reference to > vim70 exists. This one has been fixed in r8148. Thanks. -- Manuel Canales Esparcia Usuario de LFS nº2886: http://www.linuxfromscratch.org LFS en castellano:

Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread Dan Nicholson
On 6/4/07, Greg Schafer <[EMAIL PROTECTED]> wrote: > Deskin Miller wrote: > > > Is this worth adding to the book? > > Most definitely IMHO. Multi-core systems will soon be the norm. It's just > crazy not to take advantage. There used to exist a "SMP" hint somewhere. > Maybe this is it: > > http://w

Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread Miguel Bazdresch
> Greg Schafer wrote: >> A lot of seasoned SMP-building folks work on the basis of make -j X+1 ie: make -j3 if you have 2 cpus or 2 cores. As a person who has been building in parallel for a long time, I strongly disagree with a comment elsewhere in this thread about performance plummeting if overu

Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread Bryan Kadzban
Greg Schafer wrote: > A lot of seasoned SMP-building folks work on the basis of make -j X+1 > ie: make -j3 if you have 2 cpus or 2 cores. As a person who has been > building in parallel for a long time, I strongly disagree with a > comment elsewhere in this thread about performance plummeting if >

Re: suggest 'make -j2' for SMP machines?

2007-06-05 Thread taipan67
Mohan wrote: > I've actually seen some improvement on compile times running Athlons > and such as well with -j2... I suspect it fills time the compiler spends > waiting for this or that read, or write, or something. There are > certainly a lot of packages I've run into that have trouble with > par