2014-10-06 08:42
浏览 47


I am on a VPS server (Quad core with 768MB of RAM. I am running Apache and using APC as my default caching engine) . I get around 2000 visitors per day with a maximum of 100 concurrent visitors. According to CakePHP DebugKit, my most memory intensive pages use around 16MB and the other pages average at around 10MB.

  • Is this memory usage normal?
  • Is it normal for my memory to bottleneck at 2000 visitors per page?
  • Should I consider upgrading my plan to 2GB RAM?

I also noticed that the View rendering is taking up most of the memory, around 70% on most pages.

I am monitoring my resource usage, when I have around 50 or more concurrent users, I am getting 0 free MB left.

Thank you

图片转代码服务由CSDN问答提供 功能建议

我在VPS服务器上(四核,内存为768MB。我正在运行Apache并使用APC作为我的默认值 缓存引擎)。 我每天约有2000名访客,最多可同时访问100名访问者。 根据CakePHP DebugKit,我的大多数内存密集型页面使用大约16MB,其他页面平均大约10MB。

  • 此内存使用是否正常? \ n
  • 我的记忆每页吸引2000个访问者是否正常?
  • 我应该考虑将我的计划升级到2GB内存吗? \ n


    我正在监视我的资源使用情况,当我有大约50或者 更多并发用户,我剩下0 MB免费MB。


  • 写回答
  • 好问题 提建议
  • 关注问题
  • 收藏
  • 邀请回答

2条回答 默认 最新

  • donglu9978 2014-10-06 23:40

    You should also check your other processes. From my experience, MySQL takes up more memory than anything else on any stack that I run. You should also implement better page caching so that PHP doesn't need to be touched when it isn't absolutely necessary. But Apache is also a memory hog that needs to be fine tuned. If you want to stick with Apache, then run Varnish in front of it.

    Also, keep APC, but also add Memcached. It's much faster.

    If your site has a spike-load that brings it to zero memory, then, if you can, consider launching extra instances of the server and doing a sort of round-robin (if the VPS is cloud-hosted and this is possible). If the load is constant, then definitely upgrade.

    @burzum is completely right, however, that you should just switch to nginx. It's far, far better than Apache at this point. But, just to put you on the right track, quite a few people run nginx as a reverse proxy in front of Apache, and while that does speed up the server, it's entirely unnecessary because nginx can do pretty much anything you need it to do without Apache. Don't bother using Varnish in front of nginx either because nginx can act as its own reverse proxy.

    Your best bet is to implement nginx with apcu (upgrade php to 5.5 if possible for better performance) and use memcached, and implement nginx's native microcaching abilities. If your site is heavy on read and light on write, then you might notice that everything is taken care of by nginx just retrieving a cached copy from memcache. While this helps with memory, it also helps with processing. My servers' CPUs usually have a 3-5% usage during peaks.

    解决 无用
    打赏 举报
  • dpd3447 2014-10-06 11:32

    Is this memory usage normal?

    Yes, it doesn't seem to be high for a normal CakePHP application.

    Is it normal for my memory to bottleneck at 2000 visitors per page?

    I guess yes, I'm not a "server guy".

    Should I consider upgrading my plan to 2GB RAM?

    I would try switching to Nginx first. Apache is a memory eating monster compared to Nginx, just search for a few banchmarks, a random one I've picked by a quick search is from this page.

    enter image description here

    Overall Nginx should provide you a much better performance. At some stage I would consider updating the memory but try Nginx first.

    解决 无用
    打赏 举报

相关推荐 更多相似问题