> > On 3/22/06 5:56 AM, "Spiegelberg, Greg" <[EMAIL PROTECTED]> wrote: > > > > > Has anyone tested PostgreSQL 8.1.x compiled with Intel's Linux C/C++ > > > compiler? > > > > We used to compile 8.0 with icc and 7.x before that. We found very good > > performance gains for Intel P4 architecture processors and some gains for > > AMD Athlon. > > > > Lately, the gcc compilers have caught up with icc on pipelining > > optimizations and they generate better code for Opteron than icc, so we > > found that icc was significantly slower than gcc on Opteron and no > > different > > on P4/Xeon. > > > > Maybe things have changed in newer versions of icc, the last tests I did > > were about 1 year ago.
EnterpriseDB is seeing the same thing, that gcc4 now has the same performance as icc, and is more flexible. -- Bruce Momjian http://candle.pha.pa.us + If your life is a hard drive, Christ can be your backup. + ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
