It ran fine when we were only throwing a few dozen qps at it... when we tried to throw about 350qps its way, it was much much slower... slower than our existing server with significantly fewer resources available.

I never could figure out what the issue was... tried recompiling with different options, allocating more and less memory to mysql (really to innodb as all our tables are innodb), and a number of system tweaks to no avail.

Are you running it on an opteron, or on a xeon? I have heard things go much smoother on AMD hardware.

Anyways.. the damage is done. We are back on i386 and I just need to make it go! Right now i am just running with the stable non-PAE kernel that limits access to 4G of memory while i work this out.

-m

On Jan 17, 2006, at 7:04 PM, Kris Kennaway wrote:

On Tue, Jan 17, 2006 at 01:47:30PM -0600, Michael Barnett wrote:
I have 3 dell machines with 2x xeon procs, 8G of ram, and a half
terabyte raid 5.  I attempted to run the AMD64 distribution on these
boxes which was fine for everything except mysql, (which is all these
boxes are going to do) so I reinstalled 5.4 i386.

AFAIK mysql runs fine on amd64, so what was your problem with it?

Kris

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