On Fri, 2004-02-06 at 02:43, Hannu Krosing wrote: > Orion Henry kirjutas N, 05.02.2004 kell 07:16: > > I've done some testing of 7.3.4 vs 7.4.1 and found 7.4.1 to be 20%-30% > > slower than 7.3.4. Is this common knowledge or am I just unlucky with > > my query/data selection? > > > > Things of note that might matter: the machine is a dual Opteron 1.4GHz > > running Fedora Core 1 Test 1 for X86_64. The 7.3.4 was from the Fedora > > distro and the 7.4.1 was the PGDG package. > > Are you sure that it is not the case that it is not tha case that 7.3.4 > is 64 bit and the PGDG package is 32 ?
Yes sure... I don't know if they were compiled with differing optimizations or compilers though... > > The database is 3.5 Gigs with 10 millions rows and the machine had 1 Gig or ram. > > > > Oh... as a side note I'm happy to announce that the 2.6 Linux kernel has > > more than DOUBLED the speed of all my Postgres queries over the 2.4. =) > > Is this on this same hardware ? No. I havent gotten the 2.6 kernel working on the Opteron yet. The 2x speedup was on a dual Athlon 2GHz.
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