Articles tagged with performance

  1. Demystifying Throughput: A Deep Dive into TTCP on Cisco Platforms

    Posted on in networking

    In the labyrinthine world of network troubleshooting, pinpointing performance bottlenecks can feel like navigating a maze blindfolded. While various tools exist, the Cisco Test TCP (TTCP) utility often emerges as a hidden gem for gauging real-world throughput on network paths. This article embarks on a comprehensive exploration of TTCP, uncovering …

  2. SNMP Traps into MySQL is Sublime

    Posted on in System Administration

    I use snmptrapd to catch SNMP traps and then put them into a MySQL database using a pretty generic trap handler. This gives me the opportunity to generate such useful information as:

    > SELECT HOUR(time) AS "hour", COUNT(*) AS "bounces" FROM snmptraps
        WHERE hostname = 'XXX' AND time > '2011-07-25'
            AND trap_oid …
  3. Does load-interval Affect Performance?

    Posted on in Networking

    I was recently part of a discussion regarding whether or not lowering the load-interval on a Cisco router or switch interface from the default of 300 seconds had an impact on performance. Both sides made good points, but both were based on assumption and conjecture.

    5 minute input rate 213000 …
  4. ab Results Before and After Server Move

    Posted on in System Administration

    Electronic Eye

    Behold, the benefits of virtualization!

    I spent most of the evening preparing to move a few websites. I decided to do some benchmarking just to see what sort of improvement I was getting from the new server setup. Although the old server didn't feel slow when browsing sites, the results …

  5. Show Cisco Interface Status and Traffic Rates Only

    Posted on in Networking

    I would hope there is a better way to do this. The other day, I had a need to see all the interfaces on a router and how much input and output traffic they were passing. This just seems like something that should be built in, but I've not seen …

  6. Cisco Input and Output Queue Drops

    Posted on in Networking

    This seems to be a pretty common problem for Cisco users. Not that Cisco devices have more queue drop problems, just that more Cisco users are a little confused by the information generated in the show interface command.

    Specifically, we're talking about the lines that look something like this:

    Input …

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