Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi freebsd
At 10:45 AM -0400 10/9/03, Bruce Momjian wrote: Neil Conway wrote: On Thu, 2003-10-09 at 09:35, Bruce Momjian wrote: > I only put back what was already there --- not sure why others don't use > it. You want it enabled on Linux? Well, why do we have it enabled at all? If it's to speed compilation, we may as well enable it on other platforms where -pipe works, of which Linux is one. My gcc 2.95.3 manual says: -pipe Use pipes rather than temporary files for communi- cation between the various stages of compilation. This fails to work on some systems where the assem- bler cannot read from a pipe; but the GNU assembler has no trouble. so it looks like we can't use it on all platforms without testing. I will enable it for linux. Do people want to test other platforms? It should work on any platform that uses the GNU tools, so that means *BSD is in the same boat as Linux. Does it really speed compilation though? I saw somewhere that it didn't make much difference and might even hurt sometimes. -- The opinions expressed in this message are mine, not those of Caltech, JPL, NASA, or the US Government. [EMAIL PROTECTED], or [EMAIL PROTECTED] ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi
Sean Chittenden wrote: > > Oh, OK. I am on a dual, so maybe that's why I see an improvement. > > If I can get another BSD guy to test this, I can remove the pipe for > > all the BSD's. > > When benchmarking FreeBSD via worldstone, -pipe makes a difference > (how much remains a debate). Since PostgreSQL's compile is small > enough, it's likely that many folks won't notice any appreciable > difference (though it does add up). Here's a thread worth reading > from the gcc guys: > > http://gcc.gnu.org/ml/gcc-bugs/2000-10/msg00138.html Thanks. "-pipe" removed from all compiles. -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup.| Newtown Square, Pennsylvania 19073 ---(end of broadcast)--- TIP 8: explain analyze is your friend
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi
> Oh, OK. I am on a dual, so maybe that's why I see an improvement. > If I can get another BSD guy to test this, I can remove the pipe for > all the BSD's. When benchmarking FreeBSD via worldstone, -pipe makes a difference (how much remains a debate). Since PostgreSQL's compile is small enough, it's likely that many folks won't notice any appreciable difference (though it does add up). Here's a thread worth reading from the gcc guys: http://gcc.gnu.org/ml/gcc-bugs/2000-10/msg00138.html -sc -- Sean Chittenden ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi
Jan Wieck wrote: > >> >My gcc 2.95.3 manual says: > >> > > >> >-pipe Use pipes rather than temporary files for communi- > >> > cation between the various stages of compilation. > >> > This fails to work on some systems where the assem- > >> > bler cannot read from a pipe; but the GNU assembler > >> > has no trouble. > >> > > >> >so it looks like we can't use it on all platforms without testing. I > >> >will enable it for linux. Do people want to test other platforms? > >> > >> It should work on any platform that uses the GNU tools, so that means > >> *BSD is in the same boat as Linux. > >> > >> Does it really speed compilation though? I saw somewhere that it > >> didn't make much difference and might even hurt sometimes. > > > > I saw a 5 second improvement with -pipe on a 150 second full compile of > > PostgreSQL. However, I have a MFS /tmp. I suppose if I didn't, it > > would be slower. However, the difference is so small as to be > > meaningless. Can someone else test on another *BSD and report? > > > > Also, IIRC you have a dual processor box. In that case using -pipe helps > to utilize 2 CPU's (not much though), whereas on a single CPU system it > forces extra context switches that aren't necessary when running the > stages sequential. Oh, OK. I am on a dual, so maybe that's why I see an improvement. If I can get another BSD guy to test this, I can remove the pipe for all the BSD's. -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup.| Newtown Square, Pennsylvania 19073 ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi
Bruce Momjian wrote: Henry B. Hotz wrote: >> Well, why do we have it enabled at all? If it's to speed compilation, we >> may as well enable it on other platforms where -pipe works, of which >> Linux is one. > >My gcc 2.95.3 manual says: > >-pipe Use pipes rather than temporary files for communi- > cation between the various stages of compilation. > This fails to work on some systems where the assem- > bler cannot read from a pipe; but the GNU assembler > has no trouble. > >so it looks like we can't use it on all platforms without testing. I >will enable it for linux. Do people want to test other platforms? It should work on any platform that uses the GNU tools, so that means *BSD is in the same boat as Linux. Does it really speed compilation though? I saw somewhere that it didn't make much difference and might even hurt sometimes. I saw a 5 second improvement with -pipe on a 150 second full compile of PostgreSQL. However, I have a MFS /tmp. I suppose if I didn't, it would be slower. However, the difference is so small as to be meaningless. Can someone else test on another *BSD and report? Also, IIRC you have a dual processor box. In that case using -pipe helps to utilize 2 CPU's (not much though), whereas on a single CPU system it forces extra context switches that aren't necessary when running the stages sequential. Jan -- #==# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #== [EMAIL PROTECTED] # ---(end of broadcast)--- TIP 8: explain analyze is your friend
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi freebsd
Henry B. Hotz wrote: > >> Well, why do we have it enabled at all? If it's to speed compilation, we > >> may as well enable it on other platforms where -pipe works, of which > >> Linux is one. > > > >My gcc 2.95.3 manual says: > > > >-pipe Use pipes rather than temporary files for communi- > > cation between the various stages of compilation. > > This fails to work on some systems where the assem- > > bler cannot read from a pipe; but the GNU assembler > > has no trouble. > > > >so it looks like we can't use it on all platforms without testing. I > >will enable it for linux. Do people want to test other platforms? > > It should work on any platform that uses the GNU tools, so that means > *BSD is in the same boat as Linux. > > Does it really speed compilation though? I saw somewhere that it > didn't make much difference and might even hurt sometimes. I saw a 5 second improvement with -pipe on a 150 second full compile of PostgreSQL. However, I have a MFS /tmp. I suppose if I didn't, it would be slower. However, the difference is so small as to be meaningless. Can someone else test on another *BSD and report? -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup.| Newtown Square, Pennsylvania 19073 ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi freebsd netbsd
Peter Eisentraut wrote: > Bruce Momjian writes: > > > > Well, why do we have it enabled at all? If it's to speed compilation, we > > > may as well enable it on other platforms where -pipe works, of which > > > Linux is one. > > On my (Linux) system, no -pipe is always faster than -pipe. > > > so it looks like we can't use it on all platforms without testing. I > > will enable it for linux. Do people want to test other platforms? > > I request the change for Linux to be reverted. Done. Let me test BSD/OS now that you mention it. :-) -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup.| Newtown Square, Pennsylvania 19073 ---(end of broadcast)--- TIP 8: explain analyze is your friend
Re: [HACKERS] [PORTS] [COMMITTERS] pgsql-server/src/template bsdi freebsd
Bruce Momjian writes: > > Well, why do we have it enabled at all? If it's to speed compilation, we > > may as well enable it on other platforms where -pipe works, of which > > Linux is one. On my (Linux) system, no -pipe is always faster than -pipe. > so it looks like we can't use it on all platforms without testing. I > will enable it for linux. Do people want to test other platforms? I request the change for Linux to be reverted. -- Peter Eisentraut [EMAIL PROTECTED] ---(end of broadcast)--- TIP 8: explain analyze is your friend
