200 posts categorized "Application Performance" Feed

Wireshark Week - Troubleshooting Performance in the Cloud (by Paul Offord)

While the decision to move to the cloud rarely involves them, supporting end-user issues often falls to the network team. Migrating an application to a Virtual Private Cloud (VPC) could leave engineers in the dark, lacking visibility and insight to diagnose and resolve user issues. The good news is that with a bit of planning and some lateral thinking, we can still use packets to see into the cloud.



There are two main factors affecting our ability to analyse network traffic in a cloud environment.  The first is component location:

  • Single Cloud - all components are hosted in a single VPC
  • Multicloud - where application components are hosted by more than one cloud provider
  • Hybrid - where some application components are retained onsite

The second complicating factor is the type of hosting or platform service used.  These service types become progressively more abstract.  Using Amazon Web Service (AWS) offerings as an illustration:

  • EC2 i3.metal - a bare metal server offering for customers with particular needs
  • EC2 - a virtual machine running Linux or Windows
  • Fargate - a managed Docker container service
  • Elastic Beanstalk - a managed application server
  • Lambda - serverless code execution

As we progress down the list we get further away from the underlying infrastructure.  The situation is further complicated because as we move down this list there is a big increase in the dynamic nature of the application execution.  Docker containers will start …

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Which is Better for Troubleshooting SaaS Performance Issues: Packet or Number Crunching? (by Will Moonen)

  • Which is Better for Troubleshooting SaaS Performance Issues: Packet or Number Crunching?

 Most enterprise IT professionals and network performance management (NPM) tool vendors consider it mandatory to have the original packets for analysis when solving difficult network and application degradation issues. That’s because visibility into network, TCP transport, and application performance is essential, especially when web, SaaS applications, and hybrid cloud infrastructure are involved.

While there are certainly cases where you need the original packets,  there may be cases where sifting through large volumes of packets would impair rapid problem isolation and resolution time.

That is why it is our contention, and based on real customer scenarios, that insights offered by automated “number crunching” wire-data analytics trumps terabytes of stored packets.

Let’s examine further. Figure 1: FastestMTTR-01
Achieving fast MTTR in complex IT environments: Number vs. packet crunching?

 Handling slow cloud applications - 

Here’s a situation we encountered at one client that had a large number of branch offices.  Users at many branch offices reported slow application performance, mostly around three cloud applications.  From initial analysis, we discovered that the performance degradations occurred between 7 and 11 AM  and every three to five working days.


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LMTV LIVE | Guarantee Application Performance with Network Emulation (with Joe Zeto)

EVENT START TIME: 9:30 AM - Wednesday, June 20th, 2018

This week we will be talking with Joe Zeto, VP of Product Management from Apposite Technologies, about the importance of network emulation in guaranteeing application performance.

We all know that networks are imperfect—so the question is how will a specific application perform in the real world over various network types with varying degrees network of quality? Or how do you get the most realistic understanding of your app’s quality in a geographically distributed environment?

We’ll touch upon a spectrum of different landscapes, cloud object storage, cloud migration, video streaming services, devops, the internet of things, and even satellite communications.

Some key thoughts we will discuss during the event:

  • How network performance impacts application quality
  • Why it’s critical to evaluate performance in development, QA, and system test before going live
  • Easy steps you can take to bring the wide area network to your local lab

Troubleshooting a Cloud Problem with Wireshark (by Paul Offord)

The slowly growing interest in Cloud Computing that started ten or so years ago is turning into a stampede.  Most of our customers at Advance7 have strategic plans to migrate many systems to a cloud platform, and many have already started the journey.

Cloud application topology

In fact, we too have migrated all of our systems into AWS and Azure, containerising many of them in the process. But here's a concern we shared with our customers:

"Will we have enough visibility to troubleshoot performance and stability problems once we have migrated our systems?"

It's a good question.  We don't want to discover that the whole environment is opaque, just when we need to troubleshoot a serious problem.  We satisfied ourselves that we could get the data we needed to maintain our systems.  We found that we could get a lot of information from the Application Load Balancers, and we configured continuous packet captures to record traffic between the tiers of our systems.  Just as well as a couple of months ago we hit a performance problem with the TribeLab Community website.

I managed to record the actions of our Performance & Stability Engineers as they used AWS CloudWatch and Wireshark to investigate the problem.  I pulled together screenshots, video clips and other information to produce a short video case study …

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LMTV LIVE | How To Diffuse The IT Blame Game (with Keith Bromley and Scott Peerbolte)



LIVE EVENT START TIME : 9:30 AM PST, Wednesday, June 27th, 2018

6a00e008d95770883401b8d2e041f0970c-800wiThis week we will be talking with Keith Bromley (from Keysight Technologies, formerly Ixia) and Scott Peerbolte (of Corvil) about how you can help break down silos and reduce the blame game that are common for most IT departments. 

For instance, how well do your IT departments communicate with each other?  

Enterprises typically contain four or more IT sub-departments (Security, Network Operations, Virtual DC, Capacity Planning, Service Desk, Compliance, etc.) and it’s quite common for them to be at odds with each other, even in good times. For instance, there’s often contention over capital budgets, sharing resources, and headcount. But let’s be generous. Let’s say that in normal operations things are usually good between departments. What happens if there’s a breach though, even a minor one? Then things can change quickly. Especially if there are problems with acquiring accurate monitoring data for security and troubleshooting areas. Finger pointing can quickly result. 

So, what can you do? One answer is to create complete network visibility (at a moment’s notice) for network security and network monitoring/troubleshooting activities. Join us on this podcast to learn how.

Some key thoughts we will discuss during the event:


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