Fine-grained locking for POSIX local sockets (UNIX domain sockets)

[Attila Nagy]

Hello,

On 2006. 05. 06. 16:16, Robert Watson wrote:
> In local measurements, I have observed a 0% change in MySQL performance 
> on uniprocessor systems, and on a dual-processor system I have observed 
> a 4%-5% performance improvement with two client MySQL threads.
Just a quick, nowhere correct test:
http://people.fsn.hu/~bra/freebsd/20060506a-uds-fine-grain.diff/domsock.png

The machine is a quad core Xeon LV server, the client side is sysbench, 
accessing mysql 4.1.8 on a socket. Heap table, simple test.

-- 
Attila Nagy                                   e-mail: Attila.Nagy at fsn.hu
Free Software Network (FSN.HU)                 phone: +3630 306 6758
http://www.fsn.hu/