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server optimization

Discussion in 'Workarounds and Optimization' started by nabeelium, Jan 17, 2010.

  1. nabeelium

    nabeelium Registered

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    hello ,

    I have a big problem in my servers I hope to get help :

    I want to adjust apache configuration to serv high traffic .

    my server at busy times serv about 5000 connection per second

    the problem that server can't serv more than 1500 or 2000 connection then sites become very slow

    INFO :

    root@bird2 [~]# free -m
    total used free shared buffers cached
    Mem: 24098 20717 3380 0 238 3536
    -/+ buffers/cache: 16942 7156
    Swap: 26105 2116 23989

    16 processor :

    Intel(R) Xeon(R) CPU E5520 @ 2.27GHz

    cache 8192 KB

    root@bird2 [~]# httpd status

    Apache Server Status for localhost

    Server Version: Apache/2.2.14 (Unix) mod_ssl/2.2.14
    OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4 PHP/5.2.12

    Server Built: Jan 17 2010 00:48:44
    _________________________________________________________________

    Current Time: Sunday, 17-Jan-2010 21:25:56 AST
    Restart Time: Sunday, 17-Jan-2010 19:57:12 AST
    Parent Server Generation: 9
    Server uptime: 1 hour 28 minutes 44 seconds
    Total accesses: 346959 - Total Traffic: 1.4 GB
    CPU Usage: u2246.74 s253.32 cu0 cs0 - 47% CPU load
    65.2 requests/sec - 279.4 kB/second - 4390 B/request
    1122 requests currently being processed, 350 idle workers

    also Iam working on dso php handler

    fcgid conflictes with some scripts so I can't use any mpm

    please I hope to get help .

    many thanks .
     
  2. ModServ

    ModServ Well-Known Member

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    Did yoy try switching to suPHP, I think that may help you somehow.
    Also make an optimiztion you your MySQL from /etc/my.cnf.
    Mine is:
    PHP:
    # 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
    max_connections
    =500
    max_user_connections
    =500
    key_buffer 
    512M
    max_allowed_packet 
    128M
    table_cache 
    32768
    sort_buffer_size 
    8M
    read_buffer_size 
    8M
    read_rnd_buffer_size  
    8M
    myisam_sort_buffer_size 
    128M
    thread_cache_size 
    128
    query_cache_size 
    256M
    # Try number of CPU's*2 for thread_concurrency
    thread_concurrency 16
    log_slow_queries
    =/var/log/mysqld.slow.log
    long_query_time 
    60
    log
    -long-format
    expire_logs_days 
    1
    concurrent_insert 
    2

    # 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

    # 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
    local-infile=0

    [mysqldump]
    quick
    max_allowed_packet 
    128M

    [mysql]
    no-auto-rehash
    # Remove the next comment character if you are not familiar with SQL
    #safe-updates

    [isamchk]
    key_buffer 512M
    sort_buffer_size 
    8M
    read_buffer 
    2M
    write_buffer 
    2M

    [myisamchk]
    key_buffer 512M
    sort_buffer_size 
    8M
    read_buffer 
    2M
    write_buffer 
    2M

    [mysqlhotcopy]
    interactive-timeout
    Working good on 8 Processors of E5430 and 8GB of RAM.

    Also from Daily Process Logs in WHM check who make this high load. And also check View Bandwidth Usage about the high usages. Those who make the problems.

    Hope that help.
     
  3. madaboutlinux

    madaboutlinux Well-Known Member

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    You really seem to be having a high resource hog websites/processes on your server. I would have asked someone to look into the server especially hosting company to see what is causing the issues and whether any steps can be taken to avoid it. If your websites really requires such a high resources, I would recommend a Load Balancer.
     
  4. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
    Staff Member

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    Friendly Moderator Note

    To better organize discussion and increase relevant attention of the topic this thread has been relocated into the cPanel and WHM Optimization forums: cPanel and WHM Optimization - cPanel Forums
     
  5. anushkumar

    anushkumar Well-Known Member

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    I can have a look at it if you want. You can PM me or email at granush @ gmail.com
     
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