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  • PHP | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    a non Drupal backend server The site runs on a Debian Squeeze Xen VPS For most of the site s pages the client was seeing high memory usage as follows Problem high memory usage Tags Drupal Planet PHP memcache APC memcached Contents Articles Read more about Drupal site excessive memory usage traced to APC and php5 memcached 12 comments Add new comment Drupal not saving admin pages with large number of input fields Do you have a problem with some Drupal admin pages with a large number of input fields not saving Does the page just returns back with no message confirming that changes have been saved Well this happened recently on a site that we were troubleshooting for a client The symptoms were trying to save has lots of input fields a comes back with no message about saving changes and b the values changed were not saved The site had 210 enabled modules 14 user roles defined and 84 content types with 76 content fields Tags Drupal Planet PHP Drupal FastCGI fcgid Input Variables Suhosin Contents Articles Read more about Drupal not saving admin pages with large number of input fields 7 comments Add new comment Various ways of running PHP 5 2 on Ubuntu 10 04 Lucid Lynx The latest Long Term Support LTS release from Ubuntu has been with us for a bit over a month now and I love it so far on my laptop This is Lucid Lynx 10 04 and will be supported until 2013 on the desktop and more importantly until 2015 on the server My servers are still on 8 04 though the previous LTS for good reason 10 04 has PHP 5 3 While this is generally a better PHP it has some compatibility issues with many Drupal mainly for

    Original URL path: http://2bits.com/tags/php (2016-05-02)
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  • Drupal Performance | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    you all there Tags Drupal Planet Drupal Performance DrupalCamp Toronto Contents News Read more about 2bits com Presenting on Drupal Performance at DrupalCamp Toronto Add new comment Another botnet spamming Drupal web sites causing performance issues We previously wrote in detail about how botnets hammering a web site can cause outages Here is another case that emerged in the past month or so Again it is a distributed attempt from many IP addresses all over the world most probably from PCs infected with malware Their main goal seems to be to add content to a Drupal web site and trying to register a new user when that attempt is denied because of site permissions The pattern is like the following excerpt from the web server s access log Tags Drupal Planet Drupal Drupal Performance Botnet Spam Contents Articles Read more about Another botnet spamming Drupal web sites causing performance issues 20 comments Add new comment Node creation and editing slow in Internet Explorer Here is a solution A client recently asked us for help with a very specific issue The node edit page was hanging up but only in Internet Explorer 10 and not in Firefox or Chrome The client had WYSIWYG editor enabled This automatically pointed to a front end issue not a server issue So we investigated more and found that the underlying issue is between Internet Explorer and JQuery with a large number of items to be parsed Tags Drupal Planet Drupal Performance Internet Explorer Node edit Javascript JQuery Contents Articles Read more about Node creation and editing slow in Internet Explorer Here is a solution Add new comment High server load because of repeating queries too many times One of the suboptimal techniques that developers often use is a query that retrieves the entire content of a table without any conditions or filters For example SELECT FROM table name ORDER BY column name This is acceptable if there are not too many rows in the table and there is only one call per page view to that function However things start to get out of control when developers do not take into account the frequency of these calls Here is an example to illustrate the problem Tags Drupal Planet Drupal Performance MySQL Contents Articles Read more about High server load because of repeating queries too many times 1 comment Add new comment Common Issues and Solutions for Dealing with Cloud Computing and VPS performance issues for Drupal The bulk of Drupal hosting for clients that we deal with is on virtual servers whether they are marketed as cloud or not Many eventually have to move to dedicated servers because increased traffic or continually adding features that increase complexity and bloat But there are often common issues that we see repeatedly that have solutions which can prolong the life of your current site s infrastructure We assume that your staff or your hosting provider have full access to the virtual servers as well as the physical servers

    Original URL path: http://2bits.com/tags/drupal-performance (2016-05-02)
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  • Apache | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    and other Content Management Systems One inconvenient aspect of this is that your web server no longer gets the correct IP address and neither does your application The IP address is that of the machine that the reverse proxy is running on In Drupal there is code in core that tries to work around this by looking up the IP address in the HTTP header HTTP X FORWARDED FOR or a custom header that you can set Tags Drupal Planet Apache Varnish Reverse Proxy CDN CloudFlare Contents Articles Read more about Correct Client IP Address with a Reverse Proxy or Content Delivery Network CDN Add new comment Memory usage revisited when the Open Buffet is not to blame rather Views We have written before about Drupal Memory usage by modules and the Open Buffet binge syndrome But this time it was different Modules were not to blame While inspecting a site that had several performance problems for a client we noticed is that memory usage was very high From the top command the RES resident set field was 159 MB far more than what it should be We narrowed down the problem to a view that is in a block that is visible on most pages of the site Tags Drupal Planet Apache Views Open Buffet APC Memory Contents Articles Read more about Memory usage revisited when the Open Buffet is not to blame rather Views 2 comments Add new comment Identifying aggressive crawlers using Go Access Aggressive crawlers that hit your web site a lot can cause performance problems There are many ways to identify aggressive crawlers including writing custom scripts that analyze your web server logs One tool that we found to be useful in analyzing which crawlers hit the site the most today or yesterday is Go

    Original URL path: http://2bits.com/tags/apache (2016-05-02)
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  • FPM | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    that APC opcache cache is not shared and each process has to have its own copy Tags Drupal Planet PHP Drupal Performance Apache FPM Threaded Worker Contents Articles Read more about High Performance Drupal with Apache MPM Worker Threaded Server and PHP FPM 13 comments Add new comment Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal

    Original URL path: http://2bits.com/tags/fpm (2016-05-02)
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  • Threaded | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    that APC opcache cache is not shared and each process has to have its own copy Tags Drupal Planet PHP Drupal Performance Apache FPM Threaded Worker Contents Articles Read more about High Performance Drupal with Apache MPM Worker Threaded Server and PHP FPM 13 comments Add new comment Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal

    Original URL path: http://2bits.com/tags/threaded (2016-05-02)
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  • Worker | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    that APC opcache cache is not shared and each process has to have its own copy Tags Drupal Planet PHP Drupal Performance Apache FPM Threaded Worker Contents Articles Read more about High Performance Drupal with Apache MPM Worker Threaded Server and PHP FPM 13 comments Add new comment Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal

    Original URL path: http://2bits.com/tags/worker (2016-05-02)
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  • Improve Your Drupal Site Performance While Reducing Your Hosting Costs | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    or down And this is a Drupal 6 site and performed poorly on shared hosting reply Nice work Submitted by Bob not verified on Sat 2014 10 18 19 04 At least with Linode they can easily add more resources if necessary I m curious why the page caching needed to be disabled reply Can t remember Submitted by Khalid on Sat 2014 10 18 19 13 I can t remember why specifically was the page cache disabled But the point is even with that performance was great reply About adding APC at the top Submitted by daganmd not verified on Fri 2015 02 27 08 18 Excellent answer but one things that strongly stands out to me is that you don t have APC at the top APC is trivially easy to get into place there are no down sides and the gains can be really large I think it should go to the top reply Is your Drupal or WordPress site slow Is it suffering from server resources shortages Is it experiencing outages Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting Contents Services Clients Testimonials News FAQ Payments Site Map Navigation Payment Recent content Do you use any of our Drupal modules Did you find our Drupal WordPress and LAMP performance articles informative Follow us on Twitter 2bits for tips and tricks on Drupal and WordPress Performance Contact us for Drupal and WordPress Performance Optimization and Tuning Consulting In Depth Articles Client Testimonials Developing tracing and debugging Drupal Drupal Performance Tuning and Optimization for large web sites PHP op code caches accelerators Drupal large site case study Abuse Drupal Best Practices at your own peril Poor Performance Admin Menu module Popular yet occasionally problematic Another botnet spamming Drupal web sites causing performance issues Apache 2 and PHP5 on Ubuntu Feisty bloated Apache with fcgid acceptable performance and better resource utilization Avoid excessive disk writes by avoiding PHP errors in your code Benchmarking APC vs eAccelerator using Drupal Benchmarking Drupal 5 x vs 6 x which one is faster Benchmarking Drupal from the shell command line Benchmarking Drupal with PHP op code caches APC eAccelerator and XCache compared Benchmarking PostgreSQL vs MySQL performance using Drupal 5 x Benchmarking Zend Server Community Edition with Drupal Benchmarking strings overrides vs locale module Beware of Drupal modules that disable the page cache Beware when Drupal Pressflow displays messages for anonymous users Botnet hammering web site causing outages Bottleneck Replacing taxonomy term count nodes in taxonomy dhtml Bypassing Drupal core Node Access table joins to avoid outage caused by slow queries Can a Drupal web site handle a million page views a day Case study Views Quicktabs and template php Common Issues and Solutions for Dealing with Cloud Computing and VPS performance issues for Drupal Configuring Apache Solr 3 6 for Drupal on Ubuntu 14 04 with password authentication Configuring Apache Solr 4 x for Drupal with password authentication Configuring Drupal with multiple bins for memcached Correct Client IP Address

    Original URL path: http://2bits.com/articles/improve-your-drupal-site-performance-while-reducing-your-hosting-costs.html (2016-05-02)
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  • Performance | 2bits.com, Inc. - Drupal Performance Tuning and Optimization, Managed Hosting and Consulting
    We have assisted many large clients with their web site bottlenecks solving performance issues with sites running on Virtual Private servers to multiple dedicated servers Tags Performance Tuning Optimization Wordpress Wordpress Performance Contents Services Read more about Wordpress Performance Assessment Tuning and Optimization Add new comment Botnet hammering web site causing outages We had a site for a client that was stable for close to two years then suddenly started to experience switches from the master to the geographically separate slave server as frequently as twice a week The site is an entertainment news site and its articles get to Google News on occasions The symptoms was increased load on the server a sudden influx of traffic causing over 800 simultaneous connections all in the ESTABLISHED state Tags Drupal Planet Performance Drupal Performance Botnet Browser Signature Contents Articles Read more about Botnet hammering web site causing outages 7 comments Add new comment Reducing server resource utilization for busy sites by implementing fast 404s in Drupal One of the things that a default Drupal installation does is that it handles 404s for static files within Drupal itself In other words a 404 for a css or jpg file causes a full Drupal bootstrap This is not necessary and wastes resources on a site that gets lots of 404s lots of code is executed many database queries are performed only to return a 404 for a static file Tags Drupal Planet 404 Drupal Performance Drupal Performance Server Resources Contents Articles Read more about Reducing server resource utilization for busy sites by implementing fast 404s in Drupal 12 comments Add new comment Drupal Performance Assessment Tuning and Optimization As your Drupal site grows more visitors and more page views are served This puts more load on your server and often bottlenecks cause the

    Original URL path: http://2bits.com/tags/performance (2016-05-02)
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