Re: [CentOS] mysql 5 for centos 5.2
Mark Quitoriano wrote: oh ok got it. But as i can see that with my database server it only eats up 1 core of my core2quad processor. how can i optimize mysql to use all 4 core of my processor? you said you had 50-100 simultaneous connections to mysql? these are presumably issuing various queries at overlapping times? I find it pretty hard to believe its only using one processor unless all these queries are updates to the same table, using full table locking (myISAM for instance) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
On Tue, Oct 14, 2008 at 12:29 PM, John R Pierce <[EMAIL PROTECTED]> wrote: > Mark Quitoriano wrote: >> >> What do you recommend me to do so i can optimize my database on a >> multi-core processor? and i haven't got an answer for the mysql >> package for centos 5 is the multi-threading supported? >> > > each connection to mysql spawns a thread, however under various conditions > the threads can block each other, including if they are stacking up on table > locks to update the same table. > > otherwise, yes, mysql is fully multithreaded, as long as you're making > multiple queries concurrently via different connections oh ok got it. But as i can see that with my database server it only eats up 1 core of my core2quad processor. how can i optimize mysql to use all 4 core of my processor? thanks again for the answers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
Mark Quitoriano wrote: What do you recommend me to do so i can optimize my database on a multi-core processor? and i haven't got an answer for the mysql package for centos 5 is the multi-threading supported? each connection to mysql spawns a thread, however under various conditions the threads can block each other, including if they are stacking up on table locks to update the same table. otherwise, yes, mysql is fully multithreaded, as long as you're making multiple queries concurrently via different connections ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
On Sat, Oct 11, 2008 at 12:56 AM, Filipe Brandenburger <[EMAIL PROTECTED]> wrote: > On Fri, Oct 10, 2008 at 11:50, Mark Quitoriano <[EMAIL PROTECTED]> wrote: >> Does the mysql in centos compiled with multi processor support? i have >> a mysql in centos 5 running in a core2duo processor and it seems that >> it only uses 1 processor. > > How many tables are you querying in MySQL? > > If you use MyISAM tables (still the default), only one thread can > access a table at a time, so you won't get more performance out of SMP > to accesses to the same table. > Hi, What do you recommend me to do so i can optimize my database on a multi-core processor? and i haven't got an answer for the mysql package for centos 5 is the multi-threading supported? Thanks! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
On Sat, Oct 11, 2008 at 12:03 AM, John R Pierce <[EMAIL PROTECTED]> wrote: > Mark Quitoriano wrote: >> >> HI, >> >> Does the mysql in centos compiled with multi processor support? i have >> a mysql in centos 5 running in a core2duo processor and it seems that >> it only uses 1 processor. >> > > how many connections are you making to mysql? > around 50-100 connection ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
On Fri, Oct 10, 2008 at 11:50, Mark Quitoriano <[EMAIL PROTECTED]> wrote: > Does the mysql in centos compiled with multi processor support? i have > a mysql in centos 5 running in a core2duo processor and it seems that > it only uses 1 processor. How many tables are you querying in MySQL? If you use MyISAM tables (still the default), only one thread can access a table at a time, so you won't get more performance out of SMP to accesses to the same table. HTH, Filipe ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 5 for centos 5.2
Mark Quitoriano wrote: HI, Does the mysql in centos compiled with multi processor support? i have a mysql in centos 5 running in a core2duo processor and it seems that it only uses 1 processor. how many connections are you making to mysql? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] mysql 5 for centos 5.2
HI, Does the mysql in centos compiled with multi processor support? i have a mysql in centos 5 running in a core2duo processor and it seems that it only uses 1 processor. -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
