Sven Petai wrote:
On Wednesday 10 May 2006 04:38, Scott Long wrote:
Were you testing on SMP, and if so, was Hyperthreading enabled?
I tested it on 3 amd64 machines, so no hyperthreading possible.
The library preload hack was tested on:
1 * dualcore amd X2
4 * dualcore opteron
Hacked mys
On Wed, 2006-May-10 10:42:39 +0200, Suleiman Souhlal wrote:
>That's not enough. On some CPUs (like the current Opterons), the TSC
>slows down when the CPU executes a HLT instruction, so if you want good
>accuracy, you'll need to take that into account too.
The CPU can't be executing any instruct
Paul Allen wrote:
From Julian Elischer <[EMAIL PROTECTED]>, Tue, May 09, 2006 at 10:35:06AM -0700:
Sven Petai wrote:
are there any patches that take the gettimeofday() calls and replace
them with something that is cheap
such as only doing every 10th one and just returning the last value ++ 1
On Wednesday 10 May 2006 04:38, Scott Long wrote:
>
> Were you testing on SMP, and if so, was Hyperthreading enabled?
>
I tested it on 3 amd64 machines, so no hyperthreading possible.
The library preload hack was tested on:
1 * dualcore amd X2
4 * dualcore opteron
Hacked mysqld that used TSC w
Peter Jeremy wrote:
On Wed, 2006-May-10 10:42:39 +0200, Suleiman Souhlal wrote:
That's not enough. On some CPUs (like the current Opterons), the TSC
slows down when the CPU executes a HLT instruction, so if you want good
accuracy, you'll need to take that into account too.
The CPU can't be
