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Troubleshooting with Wireshark: Locate the Source of Performance Problems Laura Chappell
Publisher: Protocol Analysis Institute, Inc.

What looks good about the above output? Good thing I did, too, as I got a friendly reminder about TCP, and how latency drives throughput. This part of the job require, among other abilities, to be able to sniff and analyze your network, collect packet capture and deep inspect the content in order to find out what is unusual or clearly symptom of a breach. So I've been trying to figure out Google searches didn't really turn up anything related; I did find an old Python bug report about httplib using unbuffered socket I/O. Mar 25, 2008 - But when I went on to run the performance tests on this server (a Debian 4 install with Python 2.4.4, running on a Xen-powered Linode), I was seeing the very same problem. Mar 14, 2011 - Greg Ferro was quick to point out that it doesn't make sense to assume the network is the problem and work through the whole chain slowly eliminating every potential networking device as the source of the problem when you might be facing an and local processing time (between ServerDoneResponse and ClientDoneResponse), yet again giving you the data you need to decide whether to go into network, server or application performance troubleshooting. Dec 15, 2012 - When a small business experiences network bottlenecks, the best troubleshooting tool for the job is Wireshark, according to Jack Wallen. This is also why it is so helpful that there are builds of Wireshark available for the proprietary operating systems: when chasing down a performance problem, you may need to collect data from every source. May 1, 2014 - I recently spent an unhealthy amount of days troubleshooting performance issues between remote Data Centers. As well as live “warm” data. What about the above makes you wonder if some detail is missing? Mar 3, 2010 - How would you troubleshoot this performance problem? You will find the above SQL statement in this waits on SQL*Net type wait events, check the network with a packet sniffer (Wireshark, for example) and check the client-side activity to make certain that it is not the client application that is the source of the slow performance. But monkey patching some buffering into httplib did not change the results I was seeing in any way.