1
vote
1answer
44 views

Advice on web server performance troubleshooting is needed

I'm renting a virtual CentOS based server where I have about 5 active sites running. Several months ago I noticed a significant performance degradation in how my sites are running. First symptom was ...
2
votes
1answer
204 views

Measure Upload Speed between a client and our server

We host a SAAS application specially customized for multiple clients. For one customer in particular -- they are reporting sporadic performance issues from various locations on their network, in ...
7
votes
2answers
2k views

Troubleshooting strategy for very poor iSCSI/NFS performance

We have a new Synology RS3412RPxs that offers iSCSI targets to three Windows 2008 R2 boxes and NFS to one OpenBSD 5.0 box. Logging into the RS3412 with ssh and reading/writing both small files and ...
0
votes
2answers
192 views

How to troubleshoot many failed pageloads?

I've had a few cases in which the homepage of one of my sites wouldn't load in the browser. The site is running on django/fastcgi/nginx. It was difficult to reproduce so, in an attempt to understand ...
10
votes
7answers
9k views

Troubleshooting a “slow” network

We've all had a complaint that the "network" is "slow" at some point: might be localized to one room (switch) or one computer, might just be Internet (DNS? Browser issue?), might be just one ...
0
votes
7answers
711 views

Good tools and approaches for diagnosing poor performance

My company is developing a web-based data viewer application which requires a fairly decent amount of bandwidth to function well. However recently we have been changing a lot of things. For example, ...
1
vote
3answers
611 views

Server Performance Issue - Server 2008, SQL 2008 and Hyper-V [screenshots]

Im getting nasty performance on my server. It happens radmonly while accessing a website, but more often, right on the first time I load it. The server/webapp are still in dev, so I'm the only one ...
2
votes
1answer
2k views

High Hardware Interrupt level on Windows Server 2003 (VM)

I have a rather loaded Windows 2003 server. It's mainly loaded with IIS instances (about 6 or 7 w3wp processes) and some sharepoint stuff. The machine was P2V-ed from a real host and now resides on a ...
1
vote
7answers
2k views

how do you troubleshoot network performance of a web application

This is a pretty naive question, I guess. I frequently need to figure out what if the problem with a web app or is it simply a networking issue - lost packets or a slow connection in any point ...
2
votes
5answers
133 views

Is there any way to tell what is causing an application to lock up?

This happens on a number of PCs (WinXP SP3), where an application will simply lock up. It may be the browser (usually Firefox in our case) or it may be Visual Studio, or something else, but every ...
5
votes
6answers
822 views

How to do periodic Sql Server performance monitoring and troubleshooting?

What are the best tools and processes for periodically monitoring and troubleshooting sql server performance issues?