There are times when you may have a need to test server performance when investigating an issue or doing a predictive analysis. I learned an easy way to do this on Linux using the built-in ‘yes’ command. From the man page for the ‘yes’ command: NAME yes - output a string repeatedly until killed This does exactly as it says and will consume the CPU unless it is controlled or killed.

Continue reading

Using file sets in Wireshark is a great feature. It allows for quickly navigating between smaller files instead of experiencing sluggish performance when analyzing one large file. However, there are times when packet captures were taken using a system other than Wireshark (such as TCPDump or Dumpcap). Other times someone else performs the captures and uses a different naming convention. Either way, there are times when it would be nice to convert these names into Wireshark’s file set naming convention.

Continue reading

Author's picture

Chris Sereno

For 11 years networking was my profession with a specialized focus on proactive and reactive performance analysis. More recently I have embraced the AWS platform. This blog reflects my experience both past and present.

AWS Architect at Caterpillar, Inc.

US