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Server Specs and Advice please :)

Discussion in 'Server Configuration and Hosting' started by Paul, Aug 4, 2011.

  1. Paul

    Paul Well-Known Member

    Hi guys,

    Well after issues with my current host, i'm wondering if what i have is man enough to do what i want it to....

    I currently have a forum with a 3gig db (most of it archive posts and threads just to make it searchable).

    Discussions:
    306,683​

    Messages:
    1,661,434​

    Members:
    105​

    However i only have maybe 10-20 concurrent users at any one time, therefore meaning that in theory the db shouldnt be hammered.

    Specs of current server :
    - 45 GB SA-SCSI Disk Space
    - 2000 GB bandwidth
    - 1024 MB SLM RAM
    - Cpanel
    - Managed server

    MySql settings:

    Code:
    
    # Example MySQL config file for very large systems.
    #
    # This is for a large system with memory of 1G-2G where the system runs mainly
    # MySQL.
    #
    # You can copy this file to
    # /etc/my.cnf to set global options,
    # mysql-data-dir/my.cnf to set server-specific options (in this
    # installation this directory is /var/lib/mysql) or
    # ~/.my.cnf to set user-specific options.
    #
    # In this file, you can use all long options that a program supports.
    # If you want to know which options a program supports, run the program
    # with the "--help" option.
    
    # The following options will be passed to all MySQL clients
    [client]
    #password= your_password
    port= 3306
    socket= /var/lib/mysql/mysql.sock
    
    # Here follows entries for some specific programs
    
    # The MySQL server
    [mysqld]
    port= 3306
    socket= /var/lib/mysql/mysql.sock
    skip-locking
    key_buffer = 384M
    max_allowed_packet = 16M
    table_cache = 512
    sort_buffer_size = 2M
    read_buffer_size = 2M
    read_rnd_buffer_size = 8M
    myisam_sort_buffer_size = 64M
    thread_cache_size = 8
    query_cache_size = 64M
    max_connections=500
    # Try number of CPU's*2 for thread_concurrency
    thread_concurrency = 8
    
    # Don't listen on a TCP/IP port at all. This can be a security enhancement,
    # if all processes that need to connect to mysqld run on the same host.
    # All interaction with mysqld must be made via Unix sockets or named pipes.
    # Note that using this option without enabling named pipes on Windows
    # (via the "enable-named-pipe" option) will render mysqld useless!
    #
    #skip-networking
    
    # Disable Federated by default
    skip-federated
    
    # Replication Master Server (default)
    # binary logging is required for replication
    log-bin=mysql-bin
    
    # required unique id between 1 and 2^32 - 1
    # defaults to 1 if master-host is not set
    # but will not function as a master if omitted
    server-id= 1
    
    # Replication Slave (comment out master section to use this)
    #
    # To configure this host as a replication slave, you can choose between
    # two methods :
    #
    # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
    #    the syntax is:
    #
    #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
    #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
    #
    #    where you replace <host>, <user>, <password> by quoted strings and
    #    <port> by the master's port number (3306 by default).
    #
    #    Example:
    #
    #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
    #    MASTER_USER='joe', MASTER_PASSWORD='secret';
    #
    # OR
    #
    # 2) Set the variables below. However, in case you choose this method, then
    #    start replication for the first time (even unsuccessfully, for example
    #    if you mistyped the password in master-password and the slave fails to
    #    connect), the slave will create a master.info file, and any later
    #    change in this file to the variables' values below will be ignored and
    #    overridden by the content of the master.info file, unless you shutdown
    #    the slave server, delete master.info and restart the slaver server.
    #    For that reason, you may want to leave the lines below untouched
    #    (commented) and instead use CHANGE MASTER TO (see above)
    #
    # required unique id between 2 and 2^32 - 1
    # (and different from the master)
    # defaults to 2 if master-host is set
    # but will not function as a slave if omitted
    #server-id       = 2
    #
    # The replication master for this slave - required
    #master-host     =   <hostname>
    #
    # The username the slave will use for authentication when connecting
    # to the master - required
    #master-user     =   <username>
    #
    # The password the slave will authenticate with when connecting to
    # the master - required
    #master-password =   <password>
    #
    # The port the master is listening on.
    # optional - defaults to 3306
    #master-port     =  <port>
    #
    # binary logging - not required for slaves, but recommended
    #log-bin=mysql-bin
    
    # Point the following paths to different dedicated disks
    #tmpdir= /tmp/
    #log-update= /path-to-dedicated-directory/hostname
    
    # Uncomment the following if you are using BDB tables
    #bdb_cache_size = 384M
    #bdb_max_lock = 100000
    
    # Uncomment the following if you are using InnoDB tables
    #innodb_data_home_dir = /var/lib/mysql/
    #innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
    #innodb_log_group_home_dir = /var/lib/mysql/
    #innodb_log_arch_dir = /var/lib/mysql/
    # You can set .._buffer_pool_size up to 50 - 80 %
    # of RAM but beware of setting memory usage too high
    #innodb_buffer_pool_size = 384M
    #innodb_additional_mem_pool_size = 20M
    # Set .._log_file_size to 25 % of buffer pool size
    #innodb_log_file_size = 100M
    #innodb_log_buffer_size = 8M
    #innodb_flush_log_at_trx_commit = 1
    #innodb_lock_wait_timeout = 50
    
    [mysqldump]
    quick
    max_allowed_packet = 16M
    
    [mysql]
    no-auto-rehash
    # Remove the next comment character if you are not familiar with SQL
    #safe-updates
    
    [isamchk]
    key_buffer = 256M
    sort_buffer_size = 256M
    read_buffer = 2M
    write_buffer = 2M
    
    [myisamchk]
    key_buffer = 256M
    sort_buffer_size = 256M
    read_buffer = 2M
    write_buffer = 2M
    
    [mysqlhotcopy]
    interactive-timeout
    
    Any advice on anything that can be "tweaked" to improve performance?? As far as i can see this is pretty much Stock...

    Many thanks in advance
    Paul
     
  2. Slavik

    Slavik XenForo Moderator Staff Member

    Few small ones from the top of my head that may help.

    thread_cache_size = 128
    key_buffer = 256M
    max_allowed_packet = 8M
    read_rnd_buffer_size = 512M

    [myisamchk]
    key_buffer = 256M
    sort_buffer_size = 256M
    read_buffer = 16M
    write_buffer = 16M

    You have 8 threads listed? is it a quad core machine?
    thread_concurrency = 8

    If anything i would suggest bump up your ram on the package to 2gb, that should hopefully give you some more wiggle room to play with.
     
  3. Paul

    Paul Well-Known Member

    Thanks Slavik for the info - will give that a go, and maybe upgrade for the extra Memory if it's gonna help :)

    the reply i got re: threads/cores was....

    "There are 16 processors in the hardware node, it is equally shared to all VPSs. Equal share means we don't set a percentage hard limit on the CPU usage from the virtualization technology. It allows you to burst as needed, however, if you continuously burst or cause the node to have performance issues, that's when we have an issue."

    ....so as clear as mud then!!

    Paul
     
  4. Slavik

    Slavik XenForo Moderator Staff Member

    Ok cool,

    Give those changes a shot, there are some more advanced testing you can do, but if you are unsure of how to use the tools you can do some damage to your databases. also with only 1gb of ram theres not much you can do as your simply limited by that.

    When you upgrade to 2gb I can have a look at putting together a more comprehensive my.cnf for you ;)
     
    Paul likes this.
  5. Paul

    Paul Well-Known Member

    May well upgrade to a hybrid VPS with a single dedicated core.... Will see tomorrow :)

    Many thanks for your help... Will be in touch ;)

    Paul
     
  6. Deebs

    Deebs Well-Known Member

    Just a heads up but read_rnd_buffer_size is allocated per connection so you definately don't want it that high!

    This is the entry from my server (16gig RAM): read_rnd_buffer_size = 1M
     
    Slavik likes this.
  7. Slavik

    Slavik XenForo Moderator Staff Member

    Opps, I meant to put 512K not M :) good spot.
     
    Deebs likes this.
  8. Paul

    Paul Well-Known Member

    Lol thanks guys :)
     
  9. Paul

    Paul Well-Known Member

    Ok - new server with 1and1 - Thanks Slavik :)

    Strangely enough you don't seem to get much of a default config in my.cnf . Cant get in via SSH at the moment since I'm in work and our wonderful IT department like blocking such things as ports, however when i looked last night my default my.cnf was only around 20 lines long, and deffo not looking like it would normally do!

    Will post it tonight, however it's possible Slavik might know what i'm on about here... ;)

    Cheers
    Paul
     

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