Tag: performance

Zabbix – The Enterprise-class Monitoring Solution

Zabbix – The Enterprise-class Monitoring Solution

Zabbix is the ultimate open source availability and performance monitoring solution. Zabbix offers advanced monitoring, alerting, and visualization features today which are missing in other monitoring systems, even some of the best commercial ones. Below is a short list of features available in Zabbix:

  • auto-discovery of servers and network devices
  • low-level discovery
  • distributed monitoring with centralized web administration
  • support for both polling and trapping mechanisms
  • server software for Linux, Solaris, HP-UX, AIX, FreeBSD, OpenBSD, OS X
  • native high performance agents (client software for Linux, Solaris, HP-UX, AIX, FreeBSD, OpenBSD, OS X, Tru64/OSF1, Windows NT4.0, Windows 2000, Windows 2003, Windows XP, Windows Vista)
  • agent-less monitoring
  • secure user authentication
  • flexible user permissions
  • web-based interface
  • flexible e-mail notification of predefined events
  • high-level (business) view of monitored resources
  • audit log

Solution to WordPress with WP Super Cache blank pages problem

This took me a while to figure out, so I’ll post it here in case someone else ever gets into this problem.  After enabling WP Super Cache for a project at work, we’ve started seeing really weird and really random white page issues.  WordPress would show a blank page and then a few minutes later it would start working again.  But then it would disappear and so on and so forth.

Tracking the issue down, I’ve tweaked the WP Super Cache configuration quite a bit, but that didn’t help.  And I was sure that it was related to WP Super Cache, since periods of appearing and disappearing were consistent with cache timeout settings.  Browsing through WordPress support forums (threads one, two, and three) game an idea that it wasn’t just WP Super Cache on its own, but a combination of WP Super Cache plugin with something else on the system.

After a lengthy troubleshooting process, I think I nailed it.  APC – an alternative PHP cache module – wasn’t friendly with WP Super Cache.  So, as a short-term solution to the problem, I’ve disabled the APC and now everything seems to work well.  I’m a bit busy now to troubleshoot the problem further, but if you have any idea of why that could be happening, please share.

WordPress Plugin : P3 – Plugin Performance Profiler

WordPress Plugin : P3 – Plugin Performance Profiler

See which plugins are slowing down your site. This plugin creates a performance report for your site.

I’ve noticed that the site got a bit slower in the…

I’ve noticed that the site got a bit slower in the last few month.  That’s probably because more and more is thrown onto the poor server. Anyways, I’ve just installed WP Super Cache plugin, which should make things a bit faster again.  As always, please, let me know if you notice anything out of the ordinary.