Hi,
I was wondering why -Os is not used in place of -O2 while compiling the
Postgres sources with gcc. I prepared 2 install directories by respectively
using -Os and -O2 flags and in the former case it seems to reduce the
install footprint by about 1MB or so. Agreed this is not significant for
Nikhil Sontakke wrote:
I was wondering why -Os is not used in place of -O2 while compiling the
Postgres sources with gcc. I prepared 2 install directories by respectively
using -Os and -O2 flags and in the former case it seems to reduce the
install footprint by about 1MB or so. Agreed this is
Heikki Linnakangas heikki.linnakan...@enterprisedb.com writes:
Nikhil Sontakke wrote:
I was wondering why -Os is not used in place of -O2 while compiling the
Postgres sources with gcc.
There's no free lunch.
In any case, this sort of choice is generally something that ought to be
applied at
On Wed, Mar 11, 2009 at 12:42 PM, Tom Lane t...@sss.pgh.pa.us wrote:
As far as I know, though, -Os
is not the preferred choice in any distro, which ought to tell you
something ...
Unless of course you include distributions like ucLinux or emDebian
which only proves the point.
--
greg
--
On 3/11/09, Tom Lane t...@sss.pgh.pa.us wrote:
Heikki Linnakangas heikki.linnakan...@enterprisedb.com writes:
Nikhil Sontakke wrote:
I was wondering why -Os is not used in place of -O2 while compiling the
Postgres sources with gcc.
There's no free lunch.
In any case, this sort of
On 11 Mar 2009, at 13:51, Marko Kreen wrote:
Linux kernel is moving to use -Os everywhere. AFAIK their argument is
that kernel code should not be doing anything CPU-intensive, thus
minimal cache usage is more important than unrolled loops.
This also seems to hint that -Os is not really
On Mar 11, 2009, at 3:18 PM, Grzegorz Jaskiewicz wrote:
On 11 Mar 2009, at 13:51, Marko Kreen wrote:
Linux kernel is moving to use -Os everywhere. AFAIK their argument
is
that kernel code should not be doing anything CPU-intensive, thus
minimal cache usage is more important than unrolled
A.M. wrote:
That said, if postgresql is paging out, the DBA probably has postgresql
or the server misconfigured.
Keep in mind that paging in in this context also means moving stuff
from plain RAM into cache.
--
Alvaro Herrerahttp://www.CommandPrompt.com/
The
