Performance of Sockets vs. TCP/IP connections on localhost?

2005-02-09 Thread Lasse Laursen
Hi all!
Simple question: What is fastest when doing a connection to a local machine? 
TCP/IP or connecting via the socket? the application is a ACL helper program 
under Squid which makes a persistent connection to the database (100 
parallel programs runs on the machine each connecting to the MySQL database)

Regards
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Lasse Laursen · VP, Hosting Technology
NetGroup Processing Aps
Phone: +45 3370 1526 · Fax: +45 3313 0066 

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MySQL and FreeBSD 5.x - Using LinuxThreads or not?

2004-03-07 Thread Lasse Laursen
Hi all,

We are about to upgrade one of our database servers to a Dual Xeon machine
with HT. We have been testing FreeBSD 5.x for 6-7 months on a Uniprocessor
box and we haven't had any problems with the platform.

We would like to use FreeBSD 5 on our new database server since the SMP
support is superior in the new release compared to the 4.x branch.

I did some reading on the topic at Jeremy Zawodny's website:

http://jeremy.zawodny.com/blog/archives/000697.html

and he suggests that the best solution is to use LinuxThreads when compiling
MySQL under FreeBSD.

His initial article covered FreeBSD 4.x -
http://jeremy.zawodny.com/blog/archives/000203.html

Have any of you had any experience with stability/performance under FreeBSD
5.x and MySQL 4.0.x? Should the LinuxThread library still be used when
compiling for maximum performance or has the problems been solved in

Regards
--
Lasse Laursen · VP, Hosting Technology · NetGroup A/S
St. Kongensgade 40H · DK-1264 Copenhagen K, Denmark
Phone: +45 3370 1526 · Fax: +45 3313 0066

- Don't be fooled by cheap finnish imitations - BSD is the One True Code



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Performance / Stresstest of MySQL

2002-07-19 Thread Lasse Laursen

Hi,

We are doing some optimization of our MySQL databases (tweaking the my.cnf
file) to try to get better performance.

We run MySQL 3.23.49 on a FreeBSD 4.5 machine and we are looking for some
programs that can stresstest the servers. I have had a look at
http://osdb.sourceforge.net/ but it doesn't seem to compile under FreeBSD.

What kind of tests do you guys/girls perform to find the best configuration
of your systems?


Yours
--
Lasse Laursen <[EMAIL PROTECTED]> - Systems Developer
NetGroup A/S, St. Kongensgade 40H, DK-1264 København K, Denmark
Phone: +45 3370 1526 - Fax: +45 3313 0066 - Web: www.netgroup.dk

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Performance Monitoring/Counters

2002-07-16 Thread Lasse Laursen

Hi all,

Which tools would you recommend to performance monitoring of a MySQL
database server?

I'm thinking of the following:

System: CPU utilization, disk I/O.

RDBMS: buffer cache hit ratio, transactions/sec, connections.

 Yours
--
Lasse Laursen <[EMAIL PROTECTED]> - Systems Developer
NetGroup A/S, St. Kongensgade 40H, DK-1264 København K, Denmark
Phone: +45 3370 1526 - Fax: +45 3313 0066 - Web: www.netgroup.dk

 - We don't surf the net, we make the waves.




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