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1answer
516 views

Limit CPU usage by Apache processes

I know there is a nice mod called mod_loadavg, but it seems it doesn't work with Apache 2.2.22. Can you tell me what else should I use ?
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0answers
394 views

CPU load 1 because of init (PID 1) process?

On a new VPS, I upgraded Ubuntu 10.10 to Oneiric. I now have an init process (PID 1) which has CPU load 1. This is the same, even if I reboot. Why?
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0answers
29 views

Directing local and remote traffic

I have a server (mostly but not only serving a web application) for whom some 80%+ of all traffic comes from inside the same LAN as the server (the LAN covers the downtown area of a small town). Of ...
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2answers
206 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 ...
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1answer
202 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 ...
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1answer
123 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 ...
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1answer
625 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. ...
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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 ...
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2answers
825 views

raid 1 and high load average

i have a server with high load average, I think the problem is the raid 1. Server is in one or two points of load average, and in seconds jumps to 10 points (md4_raid1 process), this happens once or ...
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5answers
3k views

Load average is high but resources are not fully used

As far as I can tell, the load average on my server (Ubuntu Linux 8.04.1) is way too high, and in practice I see it slows down or stops serving during peak hours. It's a fairly stock LAMP powering a ...
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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, ...
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2answers
126 views

Should I be worried about server load peaks?

I have a server that runs several PHP scripts during the night to keep in sync with an other server. The load systematically reaches over 3.5 but then comes back to more reasonable values after the ...
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6answers
583 views

DNS server load

We are trying to determine what we will need in terms of hardware and bandwidth to run a DNS server which will be an authority for say 5,000 domains. The web servers get a few hits per second. (These ...
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2answers
374 views

du, find and load average

I have a complex directory structure with lot of small files in it. like: /opt/data/1000/45/32/2009/10/15/76543.zip When I launch a "du" or "find" on this directory (/opt/data/) my server load ...
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4answers
51 views

Proper way of interpreting system load on a 4 core 8 thread processor

As we all know, load of 1.00 on a single processor means that there is a load of 100%. Analogically a 4.00 load on a quad core would be 100%. How should I interpret load on a 4 core 8 thread ...
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2answers
250 views

File does not exist: /home/mysite/public_html/A2EB891D63C8

In my apache error_logs I am getting this error repeatedly. [Tue Jul 26 16:45:07 2011] [error] [client xxx.xxx.xxx.xxx] File does not exist: /home/mysite/public_html/A2EB891D63C8 I think it might ...
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2answers
106 views

Apache takes 5% of my RAM Memory

I have an apache on my server (512mb ram). The problem is that each prefork process (there are about 12 of those) takes about 3%-5% of the memory when it's waiting (I mean the httpd2-prefork processes ...
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2answers
412 views

Keeping F5 (refresh button) pressed leads to high apache server load

We are running a forum software (Woltlab Burning Board) on our server and found out that if at least two users keep reloading the website very quick (keeping F5 button pressed), the server load goes ...
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2answers
229 views

Lots of Apache processes but low pageviews

I have a question that maybe you can help me to answer. When I execute ps -aux from 00:00 to 00:03 I get about 30-40 apache processes but visits in such period of time are only 2 (Google Analytics). ...
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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"
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2answers
42 views

Apache Causing High Load on Server

Whenever Apache kills child process to create new ones after the MaxRequestPerChild is satisfied, I see Defunct Apache processes in the ps output. There defunct processes clear by themselves in a ...
0
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1answer
60 views

Force Server to Change Load Average

Recently we got a server with Limestone Networks to operate as a worker in our web-cluster. The main infrastructure behind the cluster (being the database and load balancer) are located in Phoenix ...
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2answers
519 views

How do I properly implement Apache Solr in a clustered Magento environment?

I'm currently working with a Magento Enterprise 1.12 installation running on a pair of clustered Apache web servers. Both of my web servers draw from their own databases on separate servers which are ...
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2answers
8k views

Why MySQL doesn't use settings specified in my.cnf?

I've installed MySQL 5.5.15 on debian-lenny server. I used default instruction & settings to install it. Now, my server starts successfully, but seem non of my specified settings in /etc/my.cnf ...
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3answers
597 views

How does Load Balancing Work? [closed]

I can't figure out how a load balancer works. Say for example on Rackspace cloud servers. You have one instance with all your stuff Do you clone that instance, so there are really two identical ...
0
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1answer
321 views

MySQL database server on a VPS: can it handle the spike in traffic I'm anticipating?

I have VPS service with Hostican.com. 2.7GHz CPU, 2GB RAM (level 5, if you look at the site). I have a smartphone app that makes requests to PHP forms, which query the MySQL DB. I'm anticipating a ...
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3answers
220 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 ...
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2answers
783 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 ...
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3answers
958 views

Good idea to use NLB for DNS servers?

Is it a good idea to use NLB to load balance DNS requests to primary and secondary dns servers on port 53?
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1answer
60 views

How Can I Check EngineX load?

How can I check the current load on my nginx server?
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3answers
763 views

What could be causing 30+ Apache processes consuming all memory?

I have a VPS which hosts a site (http://www.tanguay.info/web) which gets about 1800 unique visitors per day. The site ran fine getting 3-second response times for weeks. All of a sudden on Friday ...
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1answer
33 views

When server is booting high load?

From CSF statistic my server load in 30 days is never higher than 3, I have 8 core cpu and 3 sites with 10 000 unique visits per day. When I reboot my server, and I log in into console, when he is ...
0
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1answer
215 views

monitor load average every 1 or 5 seconds and do some actions if it's higher than ex. 5

How it can be done without writing additional daemon? P.S. I can't use cron because I need lesser time intervals. P.P.S. Debian 6 x64
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2answers
627 views

Current Load is WARNING - why?

On a VPS with 1 CPU core and 2GB RAM, I run a mysql+apache2 for a low traffic website. Sometimes the machine slows down or stops delivering through apache or mysql. That's why i set up nagios which ...
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1answer
116 views

Kill or revive a process based on system memory usage

Consider a system with limited memory, like a smallish VPS. Suppose there are a handful of processes that need to stay alive, and one process "P" that would be nice to have around, but is not ...
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2answers
315 views

Load Average cpu linux server

i have a problem with the load average on server, I'm using on server When I check the processor - with "top" command I see that : top - 04:27:37 up 39 min, 1 user, load average: 0.78, 0.77, 0.77 ...
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2answers
59 views

Server configuration - dealing with 350 similtaneous use

I am under the impression that configuring a server to serve 350 simultaneous users with pages that are plain HTML (plus an image or two, no AJAX or similar) with some simple database connectivity ...
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2answers
107 views

What is a rule of thumb for the max average load for a single UNIX-based server before scaling? [closed]

What is a rule of thumb for the average load for a single UNIX-based server before optimizing performance or scaling? For example, my server is running as shown: load average: 0.44, 0.44, 0.43
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1answer
971 views

HIGH CPU on my Apache server (Windows)

I have a big problem, My Apache server use 50% of CPU when I have many visits, my website have only 30 000 pages viewed/day and many static content, but the server load is between 10% and 50%, I am on ...
0
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1answer
6k views

Haproxy ACL for balance on URL request

I'm usung Ubuntu with haproxy 1.4.13 version. Its load balancing two subdomains: app1.domain.com app2.domain.com now i want to be able to use ACL to send based on url request to the right ...
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2answers
363 views

Is my server under a DDOS attack? [duplicate]

I'm getting repeat requests for resources on my server and this is increasing the load greatly. Currently my load is at 2.5ish. I block individual IP addresses causing the problem but eventually the ...
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2answers
399 views

How to interpret Rackspace server diagnostics?

We've been having some trouble lately with our site timing out during times of high traffic. We're working on a number of things to resolve it. During this process I came across our server ...
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2answers
776 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 ...
0
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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 ...
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2answers
95 views

Prevent malicious vulnerability scan increasing load on a server

this week we have been suffering some malicious vulnerability scans to our servers, increasing the load on them, making them nearly unusable. The attack is easy to defend, just blocking the ...
0
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1answer
270 views

Postfix mail server (outbound) strategy

I am about to setup a web application that consists of 2 app servers (running php/apache) and 2 db servers (ubuntu slices on slicehost). The application will be sending approximately 5000 emails a ...
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1answer
11 views

How to interpret system load on a virtual server?

I understand that system load as reported by linux 'top' is the avg number of processes waiting for CPU time and you should thus take the number of CPU cores into account when interpreting the load. ...
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1answer
32 views

How to disable search body in dovecot?

We run mail server of 30k e-mail accounts (Maildir) with dovecot imap server. We suffer from high IO load, especially when a user starts to search large imap folders. Is any way of preventing search ...
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4answers
826 views

CentOS 6.4 running Asterisk 11.5 with high load, low CPU/memory/disk IO

I have an Asterisk server doing automated calls and I'm noticing an unexplained high load in it. The server is only running Asterisk. Database and other support applications run in a different ...
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1answer
147 views

Munin load from several servers in same graph

I'm attempting to compare load averages from several severs using using Munin 1.4.6-3ubuntu3 by combining multiple hosts in a single graph. My attempt: [domain.com;Totals] load.graph_title Load ...