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0
votes
1answer
352 views

What is system load? [duplicate]

Possible Duplicate: How to understand the memory usage and load average in linux server I was reading this question, and it left me wondering what system load is. What does it actually ...
8
votes
6answers
2k views

How high can system load go?

Every time I login to my servers via SSH it flashes me a bit of server info. IE IP Address, Swap Usage, Memory Usage, etc. One of the other things it flashes me is System Load. Now most of the time ...
1
vote
4answers
866 views

Server load spikes several times a day, load average for the past month is 5 times the load average all year

My Munin notifications set up for our (Debian) LAMP cluster have been notifying me continuously that our load on our production machine has been at dangerous levels. While the average load all year ...
0
votes
1answer
209 views

Using cisco router as HTTP load balancer

I know this question is quite unusual, router doesn't design to do load balancing, but Is it possible to use cisco router as a simple HTTP Load balancer ? by creating nat pool and using ip nat ...
1
vote
1answer
372 views

Load on linux system is High but CPU is idle

On one of CentOS server i found that load is around 10 , vmstat output says a large number of process are in blocking state. In top command output, cpu is almost 70% idel. What i conclude from my ...
2
votes
3answers
202 views

Load balancing - Multiple servers, different locations

I've been scaling out a service very rapidly, and have found a problem in the way I've been balancing the load. My servers do not need a perfectly even distribution, so I was simply using a round ...
1
vote
2answers
93 views

Degenerating services on high load

If you want to provide a service but switch off some functions in high load... How Would you do that? Example would Be twitter switching off customer related feeds during high Server load
0
votes
1answer
98 views

Incremental load using SSIS?

I have a table in SQL say 'X'(i primary key int,j int, dt datetime) and it contains some data. The initial load of data is fine but I am confused about how to handle the incremental data. i.e. suppose ...
1
vote
2answers
900 views

Unexplained High Load Averages

I am getting rather strange high load averages on one of my VPS', I am not a server admin by nature, rather a website developer that has learnt the basics over the years. I am however very experienced ...
0
votes
1answer
711 views

HAProxy Multiple Domains

We currently have a HAProxy set up that splits the load over two backend servers and it reads/sets a cookie accordingly so you stay on the same server throughout the process. However, we now have a ...
5
votes
7answers
4k views

High CPU load but top processes in top all around 0%

We have a server with unusual high load and cpu util, but we can't figure out why. When we run top all the procs seem to be very low cpu. http://cl.ly/2d1g0K3q261r0R0K3e35 Is there a better way to ...
0
votes
1answer
372 views

High traffic, slow response: where is the bottleneck?

I have a site which is receiving relatively high traffic of around 250.000 pageviews a day. The PHP code is usually executing in under 0.02 seconds, but the actual response time can go up during peak ...
1
vote
2answers
603 views

load balancing using dhcpd

i'm just wondering if it's possible. i don't want to hear about other solutions, since i know them. I just want to know if ISC dhcpd (or any other open source dhcp server) implement it. Imagine that ...
0
votes
1answer
34 views

What's the load like for a non-transparent proxy that would process about 300 requests a second?

Would this require a rather expensive proxy server to efficiently and quickly service all requests? Or could we pull this off with a server with about a gigabyte of memory? Thanks.
1
vote
1answer
489 views

How do I make Amazon EC2's load balancer round-robin?

When a user comes to my site, I want him to hit one server during his browsing period. I don't want him to jump from server to server as he pages through my site. I want his "session" to be kept to ...
2
votes
2answers
217 views

Load testing tool for HTTP and JMS

I am looking for a load testing tool / load generator for HTTP (Web Services) and JMS calls. What would be a state of the art tools? a) a free product b) a commercial product
2
votes
3answers
234 views

Internet load balancing [closed]

I have 2 internet lines from 2 different ISPs. 1 ISP needs to use manual proxy configuration and the other do not need ( no proxy ). I need to combine these two lines ( load balance or failover ...
2
votes
2answers
307 views

LAMP stack on 64bit, 16 core box chews up 100% CPU

===SOLVED=== This issue was solved. Turns out that ImageMagick has trouble with multiple CPUs. Compiling ImageMagick to use one CPU solved the problem. ================ I added a new web server as ...
0
votes
2answers
82 views

load on php mysql linux performance

I have multiple scripts under PHP execution on linux server, which do constant operations on MySQL residing on the same server. I observed that many 'deadlocks' and 'longer wait timeout exceeded' ...
2
votes
3answers
276 views

mysql having loads

My website and server both are huge and heavy, my server is having 8GB RAM and 6 cores of processor. I got a mail from my hosting team, regarding the load of mysql database, Now-a-days my site is ...
0
votes
1answer
1k 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
votes
1answer
51 views

Logging in to a bogged down server

Been trying to login to my server for about an hour. ssh is timing out and webmin's not helping either. I know I've been having some issue with one program that occasionally spikes the load. Short ...
1
vote
2answers
389 views

Load high with very little CPU usage?

The load has been sitting at around 6 but there is very little running on the box. Any ideas what's causing this? It's a large AWS instance. http://grab.by/9VZk procs -----------memory---------- ...
0
votes
1answer
396 views

How to interpret these munin stats of nginx?

The following stats are from a site where nginx was placed in front of a webserver to deliver static files and let the CMS application on the legacy webserver focus on the dynamic work. This is done ...
0
votes
1answer
337 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 ...
4
votes
2answers
2k views

haproxy httpchk multiple check on backend

is it possible to check two conditions on one backend? example backend web-static option httpchk GET /path/alive.php HTTP/1.1\r\nHost:\ www1.domain.com option httpchk GET ...
0
votes
1answer
7k 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 ...
0
votes
2answers
365 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 ...
4
votes
2answers
5k views

What does load average mean? [duplicate]

Possible Duplicate: How to understand the memory usage and load average in linux server I have ready many articles that try to explain load average. To date none have ever explained it well ...
3
votes
1answer
1k views

How can I find the source of my high load issues on Ubuntu server?

We have an Ubuntu 10.4 VPS serving a Rails site which often shows pretty high load, but doesn't have high CPU or memory numbers. Reading a lot of other questions here on Server Fault suggests to me ...
2
votes
1answer
216 views

EC2 instance CPU in thousands

I started a new instance (c1.medium) and top show some crazy cpu usage PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 9561 ubuntu 20 0 84888 ...
3
votes
1answer
497 views

Which PHP script is overloading my VPS?

Is there a way to get the PHP script filename that is currently hammering my VPS? For example, when I view "top", I see: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7622 itil ...
3
votes
3answers
125 views

We are moving to two servers from one server due to performance issues. How do we monitor the value of this change?

We are moving to two servers from one server due to performance issues. We are moving our MySQL DB to its own dedicated server and will keep the original machine as the front end machine running ...
3
votes
5answers
7k views

How to Best Manage High PostgreSQL CPU Use?

I am trying to fix a high PostgreSQL CPU use problem. We are using PostgreSQL 8.0.9 and when our JEE web application (in JBoss) is used in certain load increase conditions, top shows a slow increase ...
2
votes
5answers
1k views

How to diagnose a webserver locking on high load

I have troubles understanding what problems may cause the occasional hangs that the server gets due to sudden high load spikes. I am not a system administrator (I'm a PHP programmer) but since the ...
2
votes
1answer
39 views

Application Power

I need to run an application that would consume a lot of power on a laptop. Basically the app must be very power hungry. I know that running a real time games with heavy graphics would consume lot of ...
0
votes
2answers
455 views

Mysql: less than half of memory used. High load

I have an Ubuntu 8.04 LTS, with 8Gb memory, with dual E3110@3.00GHz, software raid on sata II. For a couple of monts now I try to tune the server and it seems that I'm still far from being done. ...
4
votes
1answer
531 views

How is load average related to CPU utilization?

I am facing a load average of > 3 since past 2 days. The CPU utilization is never above 40 % in all cases. Here are some screenshots of Server Density monitoring tool that I use. The process ...
3
votes
3answers
2k views

High Load - Low IO - Low CPU usage

I have a system whose load is rather high. As you can see from the top output below, CPU usage and I/O is negligible: top - 17:31:59 up 4 days, 2:34, 2 users, load average: 1.00, 0.99, 1.00 ...
2
votes
2answers
205 views

Server statistics (processor usage and bandwidth usage)

How can I find out how much of a load my webserver is under? I tried top but I don't know how to interpret the information it's showing me for CPU. While top may give me the CPU usage I also need to ...
1
vote
5answers
2k views

High server load

A Hudson server used by developers is having some timeout issues. Whenever Java is compiling (git is checking the modules, java classes are compiled, tested and copied to Nexus), something goes wrong ...
1
vote
2answers
147 views

How can a blade server best handle a large number of users downloading a static binary file?

I have a single blade server to work with (8 CPUs, decent bandwidth, running apache). Users will be connecting to the server to download a single file (either the 5mb or the 70mb version). What can ...
0
votes
1answer
178 views

slow server on ssh output of top

top - 21:15:43 up 2:28, 1 user, load average: 0.54, 0.50, 0.52 Tasks: 225 total, 1 running, 223 sleeping, 0 stopped, 1 zombie Cpu(s): 0.4%us, 2.9%sy, 0.0%ni, 96.5%id, 0.2%wa, 0.0%hi, ...
10
votes
4answers
5k views

Load Balancing a UDP server

I have a udp server, it is a central part in my business process. in order to handle the loads I'm expecting in the production environment I'll probably need 2 or 3 instances of the server. The server ...
0
votes
5answers
2k views

Server high CPU load issue! ( Cpanel + CentOS 5)

Our server cpu load is high todays sometimes reaches to 560! .. We have the lastest Cpanel/whm and the kernel is update!while the load average is : Load Averages: 39.05 75.01 45.33 the apache log ...
1
vote
2answers
365 views

PostgreSQL Left join select VS Normal select

I was wondering which is faster - joining several selects into one join select or actually doing the separate selects is faster ? I'm doing a task which has many tables(currently 4 but it'll increase ...
5
votes
2answers
343 views

explain server load

I have got a managed server with a AMD Phenom QuadCore 3000 + 8 GB RAM I heard that s.th beetween 1-2 server load is 100% workload. My current results there are: 1.27 | 0.8 | 0.78 and in the overal ...
2
votes
1answer
3k views

Disk IO causing high load on Xen/CentOS guest

Background I'm having serious issues with a xen based server, this is on the guest partition. It's a paravirtualized CentOS 5.5. I'm not sure if it's hardware or software related, or in between ...
0
votes
1answer
78 views

Load Sharing Regarding Large Websites

I have a question regarding Load Sharing for large websites. My Understanding: So if you have a website that has millions of fits a day you will need to have an architecture that can support this ...
0
votes
2answers
401 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 ...