Help with improving mysql performance on 6.2PRE
xdivac02 at stud.fit.vutbr.cz
Fri Oct 6 00:57:42 PDT 2006
On Wed, Oct 04, 2006 at 08:52:51PM -0400, Jerry Bell wrote:
> I have a Dell PE2950 with 2 dual core 3.73Ghz processors and 4G of ram.
> I've looked through some of the lists here and have seen super-smack
> results in the 42k qps range on a 2 dual core opteron system. I'm able to
> get up to about 34k with the wide at the back of my server whilest rubbing
> the side of it.
> Here's what I've done:
> built both mysql 5.0 and 5.1 from ports with build_static and
> optimazations on.
> changed the clock to TSC
> added the following to my /etc/libmap.conf file:
> libc_r.so.5 libthr.so.2
> libc_r.so.6 libthr.so.2
> libthr.so.2 libthr.so.2
> libpthread.so.1 libthr.so.2
> libpthread.so.2 libthr.so.2
> And this is about the best result I get:
> 2950# super-smack -d mysql select-key-mysql.smack 10 10000
> Query Barrel Report for client smacker1
> connect: max=200ms min=0ms avg= 20ms from 10 clients
> Query_type num_queries max_time min_time q_per_s
> select_index 200000 0 0 34440.88
> Are there any other optimizations I need to do to mysql or freebsd? I'm
> still not 100% convinced that I've done everything I need to use libthr
> instead of libpthread.
on UP people recomend to use TSC instead of acpi timer
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