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Sebastian Kruk

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Top Stories by Sebastian Kruk

When the operations team gets an alert about potential performance problems that users might be experiencing, it is usually either the infrastructure or the actual application that is causing those problems. Things get interesting when neither the ISP nor the application provider is willing to admit fault. Can we tell who is to blame? Could it be that it is neither the ISP nor the application provider? The IT department of our customer, SerciaFood, a food production company from Sercia (names changed for commercial reasons), received complaints about the performance of one of its applications. The IT department suspected network problems while the local ISP stood firmly behind its infrastructure and blamed the solution provider. It Is Not Our Infrastructure The SerciaFood IT team recently tested a new application before rolling it into production. During the tests t... (more)

Can You See the Storm Coming?

As much as we try to avoid performance problems, they do happen. It is inevitable. But it is possible to learn to react fast, and in some occasions fast enough that the impact on the end users is negligible. Despite operators' best efforts, 73% of performance issues are reported by users, according to "APM: Getting IT on the C-Level's agenda" report by Aberdeen Group. This number is quite large considering that less than 5% of all users typically bother to complain at all. User Experience has a significant impact on business success. According to the Aberdeen report, poor perform... (more)

Five Steps to Improve E-Commerce Performance for Increased Sales

The saying "if it doesn't exist on the Internet, it doesn't exist"[1] is ringing truer every day. Nowadays, it is hard to imagine most businesses without an e-commerce platform, let alone without a web presence at all. Since e-commerce is becoming the new standard, e-commerce performance needs to be at its best. In this blog series, I have come up with several ways to ensure your company's e-commerce performance success, including: avoiding unnecessary network load,reducing number of (internal) HTTP errors, improving backend performance,understanding your clients, ensuring scal... (more)

Filling the Citrix Visibility Gap with an Application-Aware Network

Citrix XenApp or XenDesktop is a perfect fit for lowering the costs of desktop management and simplifying access to the hosted applications from any device. Last week we discussed some challenges to application performance monitoring (APM) introduced by Citrix. Apart from getting yet another component in the data center to take care of, the virtualized application delivery becomes "black boxed" from the APM perspective. It gets harder to isolate the fault domain to the network, the infrastructure, or the applications themselves. In the previous post we presented the case of The ... (more)

Application Performance Problems? When to Blame the Untrained End User

In my previous posts I wrote about how important it is to have end-to-end visibility into SAP in order to avoid serious problems in our delivery chain or to discover that application performance degradation was caused by malfunctioning hardware. One of our New Zealand customers, Fonterra, who is the world's largest exporter of dairy products, uses SAP to support its delivery chain of dairy products made from 22 billion liters of milk collected each year. In this article we show how Fonterra uses a new generation of APM tools that provide both user and transactional insight, as we... (more)