It is possible your 503 error is caused by too many processes in your website. Generally, this is a temporary state.
HostMop has implemented a kernel level technology to ensure no single web site can bring down our web server because excessive resource usage.
Today, a single site can consume all CPU resources, IO resources or apache processes -- and bring the server to the halt.
This technology prevent that!
What do I need to do to prevent this issue?
Excessive resource usage usually happen because there is a unfinished-loop process which cause the script to run again and again without end. Accumulatively, it will cause excessive resource usage. You can prevent this by doing:
- Check and modify your script to optimise loading process.
- If not, your site is already too big to handle in a shared hosting account. You might want expand by using VPS hosting or dedicated server.
Remember, a good PHP script can loads in less than 3 seconds. If it loads more than that, then there is something wrong with your scripting.