Questions tagged [optimization]

Optimization is the process of modifying a system to make some aspect of it work more efficiently or use fewer resources.

A system may be optimized so that it executes more rapidly, or is capable of operating with less memory storage or other resources, or draw less power. The optimized system will typically only be optimal in one application or for one audience. For example, one might reduce the amount of time a task takes to perform at the price of making it consume more memory.

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Config NGINX to GZip Font Files? ( Different gzip_types for different directories)

SOLUTION: It turns out it is not my config / NGINX faults - my DNS provider, cloudflare, is preventing the fonts from being GZipped for some reason I'm using NGINX with GZIP_Static module installed. I'm trying to get my .SVG/.TTF @FONT-FACE font…
Professor Frink
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How to troubleshoot a big memory issue with Apache and mySQL

I've read a lot of this website to optimize my server but nothing has really helped me :( Im having a memory trouble I think , I have just one website (Drupal) with 860K page views month but when the traffic increase, the load average goes up over…
atom
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Apache Server status, is this a bad sign?

I've been monitoring my Apache Status lately, and a lot of my users are saying how slow the site is to respond. Here is the Apache Status: Current Time: Tuesday, 21-Jun-2011 20:58:45 EDT Restart Time: Sunday, 19-Jun-2011 13:06:38 EDT Parent Server…
Moe
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Memcached - one large instance vs many smaller

I will be adding a memcached server to my web app to offload lots of db requests. I'll be mostly caching different small id-name pairs (memberid-membername, blogid-blogname, etc) and expect total number of cached items to be in hundreds of millions.…
Andrey
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optimize nginx for large file downloading

Hey, I'm wondering what are some general options I should look into for optimizing an nginx server for large file downloading (typically 100mb to 6gb). I just migrated from lighttpd and I'm noticing that during downloads, speeds fluctuate a lot very…
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The cost of MySQL filesort and what's the solution?

I'm new to optimizing MySQL (cheers for having a high traffic site!) and I'm a little confused by filesort. I stumbled onto this article: http://www.mysqlperformanceblog.com/2009/03/05/what-does-using-filesort-mean-in-mysql/ with some quick google…
Ben
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XDEBUG/PHP doesn't dump profile even when set up properly?

I installed xdebug from source, but also tried my package manager (separately) and they both are loaded correctly (verified by restarting Apache and seeing the xdebug copyright info in phpinfo()) but they do not dump profiling information. Out of…
John D.
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How to get the best LINPACK result and conquer the Top500?

Given a large Linux HPC cluster with hundreds/thousands of nodes. What are your best practices to get the best possible LINPACK benchmark (HPL) result to submit for the Top500 supercomputer list? To give you an idea what kind of answers I would…
knweiss
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Snow Leopard: Optimization

I have bunch of questions: I have a Mac network, which has five Mac's. Right now, they are individually getting software updates. Is there a way to download the patches/security updates in a single place (repository) and point all machines to this…
Shyam
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winbind authentication through apache slow

I have a linux machine setup to authenticate users using Active Directory with samba/winbind. Apache is then setup to use that to authenticate the users. This is done using: AddExternalAuth pwauth…
Zitrax
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Speed up backup of just ACLs on large file systems

I'm trying to make quick backups of just the ACLs on large GNU/Linux file systems. Extended permissions are not really necessary. I run 4 little benchmarks on a small partition just to make an estimation of the elapsed time (seconds) and produced…
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Minimal upgrade from one minor CentOS version to the next

I would like to update our remote systems from CentOS 7.2 to 7.3. Is there an option that would only install the minimum number of packages required? The standard upgrade would involve downloading almost 800MB of packages.
user2066671
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Tune when sssd goes into offline mode

I have a linux server with sssd using an ldap server for the auth backend. The connection to the ldap server is flakey, so I get authentications which are fine and then suddenly one will take forever and timeout, only to be fine the next time it…
Dylan Martin
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Move htaccess rules to apache configuration files

I'm running a website with Joomla on a dedicated server (Debian), and i've read that moving .htaccess rules to apache2 configuration files may result in a good performance improvement (Apache HTTP Server Tutorial: .htaccess files). Main…
Zikyi
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RAID 10 Stripe Size for XenServer

Below is our current server configuration. In a few weeks I will be simulating a disaster recovery by installing 5 new disks (1 hot spare) and restoring all VMs from the backups. Will I gain anything by changing the RAID stripe size to something…
Reado
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