Why is MySQL nearly twice as fast on Linux/AMD64 Vs. FreeBSD/AMD64?

Brooks Davis brooks at one-eyed-alien.net
Tue May 18 17:16:44 PDT 2004

On Tue, May 18, 2004 at 05:02:51PM -0700, JG wrote:
> At 06:28 PM 5/18/2004 -0500, you wrote:
> >JG wrote:
> >
> >>
> >>Dual AMD Opteron 240's (1.4ghz)
> >>Tyan S2882UGNR server-class motherboard w/LSI Zero channel Raid card.
> >>2 gigs PC-2700 registered ECC memory
> >>Seagate barracuda ATA 100 system drive
> >>RAID-0 Mysql drive composed of 2 15k RPM U160 SCSI Fujistu drives.
> >
> >
> >How is the memory laid out?  How many DIMMs, and are they evenly spread 
> >between the CPUs?
> There are only (2) 1GB modules. They are laid out as the motherboard 
> suggests for this
> configuration - both modules on the CPU0 bank.  

I'd recommend replacing those 1GB modules with 4 512MB modules.  That
should yeild improved performance across the board by giving both CPUs
their own RAM.

-- Brooks

Any statement of the form "X is the one, true Y" is FALSE.
PGP fingerprint 655D 519C 26A7 82E7 2529  9BF0 5D8E 8BE9 F238 1AD4
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-amd64/attachments/20040518/51941311/attachment.bin

More information about the freebsd-amd64 mailing list