Ron Johnson wrote:
The readahead on the Woody box is 8, it is 256 on the sarge box.
That's one difference.
Are both boxes only MySQL servers, and are you *sure* that the
Sarge box is quiescent when you run the test?
The sarge box is a production box, which runs the standard LAMP setup.
So it might not be quiescent (nice word BTW).
Both my.cnf files are pretty much the same>
How different are they?
Config files (sorry for the large post):
Woody (Dev box that is running fine):
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
err-log = /var/log/mysql/mysql.err
socket = /var/run/mysqld/mysqld.sock
[mysqld]
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
log = /var/log/mysql/mysql.log
basedir = /usr
datadir = /mnt/raid/mysql
#datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-locking
#skip-networking
key_buffer = 16M
max_allowed_packet = 1M
thread_stack = 128K
query_cache_limit = 1048576
query_cache_size = 26214400
query_cache_type = 1
skip-innodb
mysqldump]
quick
max_allowed_packet = 1M
[mysql]
#no-auto-rehash
[isamchk]
key_buffer = 16M
Sarge (Prod box that runs slow queries):
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = -15
[mysqld]
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
#datadir = /var/lib/mysql
datadir = /mnt/raid/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
bind-address = 127.0.0.1
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 128K
query_cache_limit = 1048576
query_cache_size = 26214400
query_cache_type = 1
skip-bdb
skip-innodb
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#[isamchk]
#key_buffer = 16M
[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
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