Linux Server Optimization
We are using a virtual private server running a couple sites/applications in a LAMP environment.
Occassionally we see errors which state “too many open files in system” when trying to execute shell commands (even simple ones, like ‘ls’). When this happens our website becomes extremely slow and eventually non-responsive. Our system mail file shows the error messages as well. Typically after a while, the errors will subside, and at that point restarting Apache seems to take things back to normal. We’ve monitored system resources using “top -c” from the command line, and nothing there appears out of bounds when this issue occurs.
Research we’ve done makes it sound like this isn’t necessarily an error condition, but simply an indicator that the sytem’s file-max setting needs to be increased. This isn’t something we’re familiar with though, and we want to avoid band-aiding if this is actually an indicator that something isn’t behaving properly. Our system does have 3 db-driven web sites running on it, but traffic to these sites is minimal.
We need someone to diagnose and potentially patch what is causing this.
The person has to be extremely proficient in administering a LAMP environment, have possibly worked with Drupal and familiar with Flash.
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