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Zim3r
Asked: 2012-07-17 11:27:10 +0800 CST

Too many instances of httpd and mysqld

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I have a VPS with 4 GB of ram and 8 cores and about 200K Visits per day. I have DirectAdmin Installed and I always see a huge number of PIDs for httpd and mysqld in DirectAdmin Service Monitor.

e.g. about 40 number of PIDs for mysqld and it increases in a while. I have CSF installed and configured httpd.conf/my.cnf sometimes this load prevents the server from responding and it freezes.

Administrators installed 32bit Centos and defined only 512 MB for SWAP

Swap:       524280          4     524276

any ideas to fix this ?

Thanks

linux centos mysql apache-2.2 httpd

1 Answers

  1. Best Answer

    If you want to add swap space, I'd suggest reading CentOS.org's documentation on the subject.

    You may also find this guide from Techotopia helpful.

    CentOS recommends your swap being at 6GB for your particular build.

    For swap file size, refer to this documentation from CentOS.org.

    Swap should equal 2x physical RAM for up to 2 GB of physical RAM, and then an additional 1x physical RAM for any amount above 2 GB, but never less than 32 MB.

    So, if:

    M = Amount of RAM in GB, and S = Amount of swap in GB, then

    If M < 2
    S = M *2
Else

S = M + 2
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