I wrote a Python program that acts on a large input file to create a few million objects representing triangles. The algorithm is: read an input file process the file and create a list of triangles, represented by their vertices output the vertices in the OFF format: a list of vertices followed by a list … Read more
This question may sound fairly elementary, but this is a debate I had with another developer I work with. I was taking care to stack allocate things where I could, instead of heap allocating them. He was talking to me and watching over my shoulder and commented that it wasn’t necessary because they are the … Read more
I have a VPS with 30 WordPress sites. I am running nginx & APC and notice it eats up my RAM up to 1GB and it increases each time I add another site. I notice APC is the one that’s causing the increasing of ram usage. Is there a way to optimize this? 2 s … Read more
We’re on v4.4.10 and keep having to restart the web server due to this issue. I’ve read various other posts and increased the wp-config.php memory, but still get this error. [23-May-2017 11:39:43 UTC] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 7146491840906359738 bytes) in D:\htdocs\wordpress\wp-includes\functions.php on line 4886 Line 4886 … Read more
I installed docker on a Debian 7 machine in the following way $ echo deb http://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list $ sudo apt-get update $ curl -sSL https://get.docker.com/ubuntu/ | sudo sh After that when I first tried creating an Image it failed with the following error time=”2015-06-02T14:26:37-04:00″ level=info msg=”[8] System error: write /sys/fs/cgroup/docker/01f5670fbee1f6687f58f3a943b1e1bdaec2630197fa4da1b19cc3db7e3d3883/cgroup.procs: no space … Read more
When checking get_defined_vars() on an empty template file my theme loads over 70000 lines of output. Before even including elements on a page all of this is loaded. Is this correct? Is there any way to reduce it or remove unnecessary variables? Do all wp_rewrite rules have to be available for every page load? 2 … Read more
I was running into memory issues with this: get_posts( array( ‘posts_per_page’ => ‘-1’, ‘post_type’ => array( ‘product’, ‘product_variation’ ) ) (there are thousands of results) just trying to get a list of all post IDs. The below code grabs 10 products at a time, to hopefully avoid any memory limits. It seems to work OK … Read more
I have an application that reads a CSV file with piles of data rows. I give the user a summary of the number of rows based on types of data, but I want to make sure that I don’t read in too many rows of data and cause OutOfMemoryErrors. Each row translates into an object. … Read more
I once had the task of determining the following performance parameters from inside a running application: Total virtual memory available Virtual memory currently used Virtual memory currently used by my process Total RAM available RAM currently used RAM currently used by my process % CPU currently used % CPU currently used by my process The … Read more
I have a bunch of client point of sale (POS) systems that periodically send new sales data to one centralized database, which stores the data into one big database for report generation. The client POS is based on PHPPOS, and I have implemented a module that uses the standard XML-RPC library to send sales data … Read more
