Testing compression

After the changes, restart the web server (Apache, Nginx, or lighttpd) and check the logs for errors.

In a basic test with compression modules, we're able to identify that we have a considerable gain in file size. The following table shows the level of compression and page load times (tr_staus.php is the page that shows the status of the triggers) on a virtual server with 500 active triggers:

Compression modules	Apache without mod_deflate	Nginx without gzip	lighttpd without mod_compress	Apache with mod_deflate	Nginx with gzip	lighttpd with mod_compress
Size	1.2 MB	1.2 MB	1.2 MB	51.5 KB	51.5 KB	51.5 KB
Time	~5 sec	~6 sec	~6 sec	~5 sec	~3 sec	~4 sec

Of course, the tests may have different results with different hardware. The focus is on exemplifying how compression impacts the visualization of Zabbix screens.

If you don't have access to the web server settings (to enable the modules), you can add a small piece of PHP code in each .php file in Zabbix, and...