Month: June 2017

sar Results Explained

Howdy! I won’t be going into a whole lot of detail about sar as this has been documented elsewhere multiple times but basically, SAR stands for System Activity Report and as its name suggests, the sar command is used to collect,report & save CPU, Memory, I/O usage in Unix like operating systems. The SAR command…


What is the Apache Scoreboard?

As a request comes in, it is denoted in the scoreboard. The scoreboard itself is basically a way to keep track of each incoming, waiting, and completing connections. These connections are broken down into the following types: “_” Waiting for Connection “S” Starting up “R” Reading Request “W” Sending Reply “K” Keepalive (read) “D” DNS…