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0
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2answers
798 views

Debian, 2 NICs load-balancing or agregating with one same gateway

I have one server, with double NICs connected to one switch with the same gateway. Behind the switch we have internet. |Debian| -> eth0 -> switch -> internet -> eth1 -> same I don't understand how ...
6
votes
6answers
848 views

Site Goes Offline Every Day At Midnight - No One Knows Why

Seems every day a website I manage has been going online and offline between 12a and 12:25a. I have no idea what is causing the issue so I am seeking guidance on where to start. It is a Wordpress ...
0
votes
1answer
145 views

server busy - cannot execute new command

I want to understand this scenario: My server suddenly became busy and stopped doing anything new that I tell it to do: ls, vi, nothing works, its frozen. But I can browse through already open vim ...
2
votes
2answers
2k views

apache spawning too many processes despite maxclient and other constraints

Here are my MPM constraints: <IfModule mpm_prefork_module> StartServers 10 MinSpareServers 10 MaxSpareServers 10 MaxClients 10 ...
1
vote
2answers
268 views

Layer 4 Load balancing - TCP Handshake

I am newbie to load balancing concepts. This is regarding a Layer 4 Load Balancer. I would like to know if the packets intercepted at IP layer by the Load Balancer would read the TCP header ...
1
vote
1answer
69 views

Simulating load from GroupWise clients (MUA) on GroupWise POAs

We are looking to simulate the load of many clients sending mail, and we want it to be scriptable. The part that we are unsure about is if our possible message submission methods (SMTP and SOAP) are ...
0
votes
3answers
293 views

Problem with load Apache + MySQL

I have tried configuring both Apache and MySQL but I still get very high peaks in load: http://d.pr/aD9L I'm pretty sure these peaks are not caused by increase in traffic, because no peaks can be ...
3
votes
2answers
920 views

apache process count spike bringing vm to its knees

we have a few virtual machines we're using as a plesk hosting servers. one of them exhibits the following bad behaviour: apache process count goes sky-high (ive limited MaxClients to 80 to try to ...
1
vote
2answers
166 views

Test load on Web Server [duplicate]

I want to benchmark my server to the best configuration for Apache and MySql. I want you to ask if do you know any script that simulates various users browsing on the website? PD: I'm using ...
0
votes
3answers
86 views

Server impact of common shared files across hundreds of sites

I am working for a client running a HostGator Dedicated Server with hundreds of sites on it. Since there will be some common files between them I am contemplating doing the following: creating a ...
1
vote
5answers
123 views

Migrated to Dedicated Host. Site loads extremely slowly.

We have migrated to new Dedicated Host (iweb.com). We are using Drupal as a CMS. When I load a site from browser, the site loads in 40-50 seconds. We have no load on server (the site not yet ...
0
votes
5answers
221 views

new instances of java are created

I ssh into a server in my office, its running Lucid Lynx 10.04. I dont know why its running so many instances of java. Thanks This is the the console barf of $ top Tasks: 134 total, 2 running, ...
1
vote
2answers
2k views

How to determine approximate maximum number of requests?

I'm building a quite simple web application, and need to get some rough understanding of how much load my server can take. Of course, this depends on a whole lot of factors, but I just need a rough ...
1
vote
1answer
404 views

How to determine maximum server load?

How, I've got a Windows 2008 IIS 7 server using Quad-core processor (XEON) with 8GB RAM - I'd like to check what maximum load it could withstand? Is there any good way doing this? From your ...
1
vote
2answers
208 views

Geographic web+pgsql load balancing

My goal is (don't know if this is possible, that's why I'm asking): have two separate geographic locations. At each location, a web server and a postgres database run. The application is the same at ...
0
votes
3answers
1k views

How do I invoke a Perl CGI script when the user requests an HTML page?

Is there anyway to invoke a Perl CGI script when an HTML page is requested to server? Just like a script can be tied to an action, is there anyway to tie a script to "Request for page"
1
vote
1answer
203 views

Server load effect upon Nginx redirects vs. serving of static pages

Based on experience, would someone please tell me how server load affects the ability of Nginx to redirect vs. serve a static page? Also, does this ability vary depending on the cause of the high ...
0
votes
3answers
225 views

Does this top look healthy to you?

I run a server with the following specs: Intel i7 920 8 GB RAM Linux 2.6.32-25-server #44-Ubuntu 10.04 SMP Fri Sep 17 21:13:39 UTC 2010 x86_64 GNU/Linux 75 Apache processes Low-end hardware RAID-1 ...
3
votes
2answers
3k views

Load Balancing long running TCP connections

I'm trying to research the best way to load balance long running TCP connections for the following scenario: We have multiple servers behind a redundant set of firewalls and clients establish long ...
0
votes
1answer
342 views

High %idle on EC2 instances despite high load

I like to fully-load our compute hardware to reduce wasted CPU time, and on typical in-house hardware this is fairly easy: load the machine with as many runnable threads as there are cores, and idle ...
0
votes
1answer
41 views

Calculating costs for an API on the basis of server load and storage

We're going to release a commercial API product very soon. The API provides the ability to upload, covert and store different media formats. Uploaded files will be converted to open and closed media ...
2
votes
1answer
753 views

command line http load testing tool that supports gzip / deflate

We use apache as our web server and it has mod_deflate enabled. We have been using httperf to test it for load but we've not been able to get it to talk to the webserver with gzip/deflate encoding ...
0
votes
1answer
56 views

Can having native mobile app for your website reduce server load?

Sorry guys, I'm a bit new to this. I'm not sure if I'm asking the right questions here. I'm creating an iPhone app for my website, and most of my users are going to use it through the iPhone rather ...
1
vote
6answers
656 views

How can I figure out which site on my server is getting swamped with traffic?

I'm running a linux server with about 60 websites on it that is crashing under heavy load. Is there an easy way to see which Apache virtual host is getting the most traffic?
1
vote
3answers
224 views

Comment Spam crashing Mediatemple dv Server

I have a dv (Dedicated Virtual) server at Mediatemple where I am hosting over 700 Wordpress blogs. Lately I have been facing a problem with comment spam wherein my the server memory utilization shoots ...
0
votes
3answers
224 views

load balancer for web page

Which load balancer is the best for fail over server. If first server is down then ip is changed to second one. If first goes back ip for domain is changed back to first server. For WIN os, or some ...
1
vote
1answer
125 views

What does Citrix's definition of Load Bias mean?

I'm having trouble understanding the definition. It can be found here. Small section: The Load Bias also called the Protocol Mask, is retained in the memory resident database referred to as the ...
1
vote
1answer
825 views

MySQL failed to start after killed a long running “LOAD DATA INFILE” process

I killed a MySQL process which is running a LOAD DATA INFILE command to load a 9GB .csv file into a table in a InnoDB database. Now, when I run mysql DATABASE, it just stopped and showed Reading ...
5
votes
2answers
364 views

Is this a reasonable architecture for a newspaper site?

We run a newspaper-style site and are consolidating our architecture from one that grew amorphously into a more scalable, resiliant solution. I was thinking of the following: internet | h/w ...
0
votes
2answers
120 views

Setting a maximum server load for apache2

Is there a way to configure apache2 to stop serving requests if a specific value of server load (like the value that you see when using htop) is reached? Ideally a predefined static page should be ...
1
vote
2answers
1k views

How to calculate server bandwidth / load estimates?

What's either a good rule of thumb or a method to estimate load on a Windows server for a php application? How do I estimate bandwidth required for 1000 users on the site, or 10,000?
1
vote
2answers
114 views

Getting Long-term load statistics from RHEL Cluster?

Is there any straightforward record/poll of long term load record instead of the usual 1,5,15 minute load values? Background: Trying to convince faculty that current cluster solution is underutilized ...
2
votes
2answers
489 views

Animated HTTP request visualisation on Apache

This is more a question to appease my memory in trying to remember what it was I saw a while ago. I remember being introduced to a realtime server visualisation tool that showed the current requests ...
1
vote
1answer
643 views

Uneven load with Microsoft Network Load Balancing (Server 2003)

I am a network administrator at a small company that uses Network Load Balancing (NLB) to cluster our terminal servers together. Recently, we changed our network setup due to PCI-DSS compliance. ...
1
vote
1answer
772 views

Can I use only 2 servers for nginx load balancing?

If I have only 2 servers, can I make each as a backend and also front end? Server 1: master load balancer / backend server1 Server 2: slave load balancer / backend server2 is it possible?
0
votes
2answers
802 views

Load Balancing two Apache Tomcat WebServices

I am using two apache tomcat servers on two windows 7 machines and want to load balance the requests for those servers through a load balancer. I am not that experienced in building up such networks ...
0
votes
1answer
318 views

Ubuntu 10, tomcat, Apache, concurrent user load

I have a question regarding the web server that I am setting up. It is a dual core 2.67 G AMD 64 bit X2 based machine with 2GB of ram (667MHZ). I am setting it up with tomcat, apache2 and MySql(all ...
2
votes
1answer
1k views

Loading large CSV into Postgres

I'm trying to load a CSV of about 100M records (around 8GB on disk) into Postgres via the copy command: copy mytable from 'path/to/myfile.csv' with CSV; I have been monitoring the progress by checking ...
2
votes
2answers
144 views

How can I best offload part of a domain's URIs from one server to another?

Sorry, I am very new to this whole concept. Basically, I have a Django site. One of the view does a lot of work and leads to the server hanging up due to lack of memory. I want to take the ...
0
votes
1answer
211 views

load balancing with two servers

I would like to configure two servers to achieve load balancing (maybe using mod_proxy_balancer). The problem is not the number of requests, but the load associated with each request (which I want to ...
3
votes
2answers
258 views

How would I show a static “over capacity” page in IIS?

I'm launching a new site soon and I expect it to make it into mainstream media. At this point, I'm not sure our server will be able to handle all of the requests. Is there a way that I can detect the ...
6
votes
6answers
225 views

solution to a too much traffic problem

My company has a web service api which is starting to get a lot of use. Recently we had some issues with running out of memory. We optimized some inefficient code and solved the problem. We know we ...
2
votes
1answer
978 views

What method of MySQL mirroring should I use for this?

I'm running an web application hosting service (basically hosting forums for free), and I have two remote servers at my disposal. The code for the application is stored on both servers and isn't a ...
0
votes
3answers
226 views

vps like [load] graphs

I investigated a couple of tools but they were really annoying and not polished. kSar for exampe is supposed to graph sar output, but it doesn't work. There's a perl script around (sar2rrd) that's ...
2
votes
3answers
206 views

What's the best way to work out if a virtual server is overloaded?

I have a series of virtual servers. I'm running a command to login to each one and take a look at the load averages using uptime. What's the best way to work out if load values represent overloading? ...
5
votes
2answers
1k views

Has anyone used uwsgi nginx and django for a high-load environment?

I was wondering if anyone has used uwsgi with nginx to serve a high-load django site before. If so, did they have any problems?
1
vote
1answer
1k views

Configuration of Sonicwall Load Balancing

We installed a Sonicwall NSA 240 appliance and have configured it up for our SSL VPN connection and for load balancing with 2 ADSL lines. Over the past week, I have been testing the load balancing ...
1
vote
2answers
623 views

High apache load but little traffic logged

I recently installed Varnish to sit in front of Apache on a dedicated server running a single site. It appears to be working well, but the load on Apache is still very high. What doesn't make sense is ...
1
vote
3answers
304 views

Troubleshooting web page load issues

I having an odd issue where a particular page doesn't finish loading... all the time. Intermittenly, this page doesn't finish loading - in particluar, it seems maybe the JS file isn't downloaded or ...
2
votes
4answers
2k views

High load without explanation

I have a very high load on my machine and don't know what is responsible or how to find out. On the machine runs a jboss appserver and mysql. Here is a top from the user at peak time: top - 16:23:01 ...