In a previous post, I explained that we observe rich and complex streams of events, something like the following multiplied by a million: And our goal is to choose a…
Probabilistic Sampling With A Sketch
4 Steps to Create a Wireless Heat Map
Wireless heat maps have gotten a lot of press lately, from SolarWinds and the industry at large. There’s a good reason for this. As wireless devices become faster and gain more users, the completely wireless office space becomes a reality for larger and larger organizations.
Bandwidth Problems? 3 Steps to Diagnose Bandwidth Issues
We’ve all been there. You place a lunch order at a restaurant, speak for a while with your dining companions, then someone at the table realizes it’s been a while since you…
Selecting Representative Samples From A Stream Of Queries
Sampling is hard. This is the title of a talk I gave at a meetup in Boston a few weeks back. But what’s so hard about sampling anyway? To begin…
How To Fix Network Experience Problems
If you run a network, you know how complaints start. Lowly users or high-placed executives come to you complaining of lousy bandwidth, applications that freeze mid-transaction, phone calls breaking up, video scrambled, etc. It seems that whatever the cause, it’s your fault. Often, even the most non-technical people have their own ideas about what’s wrong with the health of your network and how to fix it, which might involve switching telecom companies, buying more bandwidth, or swapping out hardware.
SolarWinds® Database Performance Monitor Now Supports Heroku
In November, Database Performance Monitor introduced support for databases hosted on Amazon RDS. In the spirit of monitoring all of the databases on all of the platforms, we are excited…
The Strategic Importance of Database Administration
If you draw a diagram of information flow and interaction amongst teams and processes in IT, you’ll probably find that although some parts of the organization are “leaf” or “edge”…
Nothing Is Free, Including Buffer Space
Let’s talk a bit about free space in buffer, what SQL Sentry Performance Advisor is showing you, and what it means.
Improved User Parsing From The MySQL Protocol
This isn’t really a feature we should brag about, because it’s a bug that took us a while to figure out, but we believe in sharing the bad as well…
Parsing the Redis TCP Protocol
When we decided to go beyond just MySQL monitoring, we had a couple of natural next choices. The decision involved engineering effort, the likelihood we’d find MySQL-specific things in our…