freebsd vs linux: performance problem

Ivan Voras ivoras at
Thu Dec 13 09:55:10 PST 2007

Shantanu Ghosh wrote:
> Hi,
> I am running FreeBSD 7.0 Beta1 and Linux FC6 on two identical pieces of
> hardware - Dell poweredge with intel core2 duo. Each system has 4 CPUs.
> Now, in simple memory access operations, I see the freebsd system being
> noticably slower than the linux system. A simple C program that copies
> from one memory buffer to another, when executed in a loop executes
> between 10-30% slower on freebsd, as compared to linux. The assembly
> code of the program used for testing is identical in both the cases.

AMD64 or i386 mode?

Do they also have the same amount of memory? How much?

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