mysql scaling questions

[Gary Stanley]

At 06:00 AM 1/2/2008, Kris Kennaway wrote:

>Per later discussion you will also need to either comment out the 
>syscalls that are (might be) being cached by glibc to artificially 
>inflate its reported rate, or verify that it is not doing so.
>
>Kris

IIRC linux uses vsyscalls on x86_64, and calling things like 
gettimeofday() isn't as expensive as it normally should be.. 
vsyscalls are similar to darwins' commpage.

-G