The high-load tag has no wiki summary.
1
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1answer
64 views
KVM IO leads to high system load, WD Caviar Green (EACS)
I have Ubuntu 12.04 host running Linux 3.2.0-24-generic, libvirt 0.9.8-2ubuntu17, qemu-kvm 1.0+noroms-0ubuntu13. Host uses elevator=deadline, guests use elevator=noop. All KVM guests use virtio, no ...
1
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2answers
49 views
Debug sudden load peaks
I need to debug sudden load peaks automatically. We already monitor with nagios like check scripts, but the load peaks are seldom and short.
I search for a daemon which checks the load every N ...
0
votes
1answer
84 views
On Multiple Processors sytem, System load is high while most of CPUS are idle
See the following output of "top". Any idea?
top - 17:33:25 up 7 days, 28 min, 4 users, load average: 12.04, 8.35, 6.30
Tasks: 477 total, 2 running, 474 sleeping, 0 stopped, 1 zombie
Cpu0 ...
1
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2answers
59 views
rsync ionice destination
To avoid rsync to starve the system and network we use ionice when starting rsync and set the --bwlimit parameter. For example:
ionice -c2 -n7 rsync -aH --bwlimit=30000 /foo root@dest.com:/
This ...
0
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0answers
40 views
rails + memcache + passenger strange issue with centralized memcache servers
We are facing strange memcache issue in production.
We have 10 rails application servers(passenger) load balanced by nginx.
We have 4 different(ip address) memcached servers.
We are using ruby ...
-1
votes
1answer
67 views
How to detect if a server is overloaded on Linux [closed]
I would like to develop a "simple" script which should be automatically detect (every 5 minutes let say) if a server (in this case the same host on which it is running) is overloaded or not.
The ...
0
votes
3answers
126 views
Should I add more RAM or CPU on my server? How do I figure this?
I host a PHP/MySQL application with Smarty caching on my server. It routinely gets short traffic spikes via tweets to thousands of followers. The traffic spike goes up to 6 hits /sec for upto 20-30 ...
4
votes
1answer
109 views
High load on Xen guests
We're facing a weird issue with a freshly installed Xen (4.2) system.
The server is an Intel SR1690WB equipped with 4x1Tb HDD and with a RS2BL040 RAID card which configured to use RAID10.
The ...
2
votes
2answers
111 views
Linux load averages and possible danger?
I have an box I built out of some parts I have around my office.
I used an old Intel Core CPU (not core2) @2.0ghz with 2 cores.
The box is running Ubuntu 11.10 64-bit server edition, it serves as my ...
0
votes
1answer
756 views
Optimize php-fpm and varnish for a powerfull server
My setup is:
Intel® Core™ i7-2600 and RAM 16 GB DDR3 RAM
varnish+nginx+php-fpm+apc for a not very heavy WordPress blog with W3 Total Cache and CDN
My problem is that after 55 hits per second ...
3
votes
3answers
259 views
Explain load averages on Solaris 10
I understand load averages on Linux, but am a bit mystified by the load averages on a legacy Solaris 10 machine my app runs on. The load averages seem impossibly high. Here's the output.
[netcool1 ...
0
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0answers
65 views
Apache hung connections on traffic spikes due to MinSpareThread
I'm trying to solve this issue on my company high traffic sport website: on particular sport events a lot of people open the website at the same time, causing a big requests spike. Five Apache load ...
2
votes
2answers
172 views
Real CPU load with multiple cores
My machine has 4 cores. And my load average is about 1.2 Does with means that all cores are more than busy? Or is the real load of my machine? 1.2 / 4 = 0.3 In other words is this machine overloaded ...
0
votes
2answers
111 views
Postfix has high load with smtp connections
I have a client who has been allocated 20 ip's specifically for mailing newsletters, alerts, etc. Typically, the amount of mail sent per day to users is around 1 million although it can peak at around ...
2
votes
4answers
147 views
Server not coping, cpu load averages spike to 33.0
Basically I have a server failing under load. Its a editorial news site that see irregular traffic spikes. I'm tearing my hair out trying to stabilise the LAMP configuration.
Current Time: Wednesday, ...
2
votes
1answer
248 views
250k connections for comet with node.js
How to implement node.js to be able to handle 250k connections as comet server (client side we use socket.io)?
Would the use of nginx as proxy/loadbalancer be the right solution? Or will HA-Proxy be ...
-1
votes
2answers
35 views
Which server OS to use for intensive computations and high incoming HTTP traffic on desktop PC?
I'm writing a highly computationally-intensive system that crawls Web-pages, processes them and dumps results into MongoDB. I'd like to pick OS that will use as little resources for itself as possible ...
0
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2answers
294 views
Is a 'high' IO rate healthy?
I do a lot of work with my Linode that currently hosts a site, but every now and then (usually once every two months or so) - I'll get a warning about my IO rate being too high (Usually just higher ...
5
votes
2answers
99 views
Insufficient channel capacity of 1GBit
There is a Caching Server (Varnish): it receives data from Amazon S3 on request, saves it for some time and gives it to the client. We have encountered the problem of insufficient channel capacity of ...
0
votes
2answers
98 views
Is there a service that simulates high traffic using data from log files?
I need to test a saas service load by sending 1000s requests/sec from multiple remote sources. The urls need to be from my access log. Is there a service that does that?
0
votes
1answer
82 views
mysql and phpthumb killing the server
I installed GD and ImageMagick the other day and since that day phpthumb() which it is installed on my wordpress killing the processor.
I've transfered my website from an old server to this new one ...
0
votes
1answer
80 views
Anything I can do? High CPU load on server and not able to login
I just purchased a dedi server (Atom dual core)
After I resynced and transferred the whole website, I have one of the scripts that required GD module to be installed , I didn't know that so it made a ...
2
votes
3answers
451 views
100% CPU load on Ubuntu 10.04.3 LTS 64bit
I have 2 days since I am trying to fix this issue, with no success.
The server is a mysql database server.
Hardware:
DELL Poweredge 1950, 2x Intel Xeon Quad Core E5345 @ 2.33GHz, 16 Gb mem, 2x 146Gb ...
1
vote
1answer
85 views
Scaling Amazon EC2 instanced when traffic to my app rises
I need your help about scalability on Amazon EC2 instanced. I have developed a web application using asp.net. I have decided that for start, I want to deploy it on a Medium High-CPU Windows Server ...
1
vote
2answers
253 views
How to detect the process (and mysql query) that makes high load on server?
From time to time load on my server (centos 4)jumps to 15 or more. I need to discover what process causes this high load on server.
It there any script which can handle this for me ?
I think its ...
1
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0answers
132 views
nginx does not close loopback connections
I'm using nginx in reverse-proxy mode. Here's relevant part of config file:
server {
listen 80;
server_name ~^web.redhelper\.ru$ ;
access_log off;
location /http-bind {
...
1
vote
2answers
231 views
store high amount of photos (150 million) and make available for web [closed]
For a actual project I must setup a high-available storage server who can store and publish (http) 150 million photos in 7 sizes means total 1050 million files. For every photo we need total 200 KB ...
1
vote
0answers
24 views
Grab process information about high process usage
I'm looking to grab process information about processes that are using over a certain CPU limit.
Ex:
#!/usr/bin/env python
def get_processes_over_usage(cpu_usage):
#Find the processes.
...
4
votes
2answers
309 views
Filesystem performance tuning options for ext3
I have a brand new server w/48G RAM which I am going to use as a DB server. I don't expect problems with disk reads, but I definitely would like to optimize for write intensive load patterns.
The ...
0
votes
1answer
130 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
5answers
305 views
High load on server
I have a cpanel LAMP dedicated server and I've been having load problems the last 2 days.
This is what my top looks like (sorted by M):
top - 14:26:04 up 1 day, 1:08, 2 users, load average: ...
0
votes
1answer
377 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
4answers
160 views
Advantages of MySQL Server Enterprise
We build for a customer a social network site, where we will have on beginning 1 Master and 2 Slave MySQL Server.
I'm not sure if we need to go with the Enterprise or use the GA Version. The only ...
6
votes
2answers
2k views
Ubuntu load average spikes but CPUs are idle
We have a server on a cloud network, provided by a third party. We are running Ubuntu 10.04 Server Edition.
The problem happens at seemingly random times, around one to three times a day. The load ...
0
votes
2answers
326 views
Squeeze Server freezing under heavy cpu / disk / network load
i would like to ask for help since i am feeling a bit clueless here.
I recently bought a low end dedicated machine that was supposed to host
some services: squid, proftpd and rtorrent.
I installed ...
6
votes
5answers
5k views
High Linux loads on low CPU/memory usage
I have quite strange situation, where my CentOS 5.5 box loads are high, but the CPU and memory used are pretty low:
top - 20:41:38 up 42 days, 6:14, 2 users, load average: 19.79, 21.25, 18.87
...
2
votes
4answers
1k views
High CPU from httpd process
I am currently getting high CPU on a server that is just running a couple of sites with very low traffic. One of the sites is in still development going live soon. However, this site is very very ...
3
votes
6answers
1k views
Scalable WordPress Host for High-Volume Site?
I need recommendations for a scalable web host for a high volume WordPress web site. For my purposes, high-volume might be 100K-500K visitors/hour. Might think towards a 1M/hour burst rate as a "high ...
scalability
1
vote
2answers
327 views
How do I optimize a high traffic Wordpress website?
I am running a wordpress based site which is now hosted on (mt) under DV-Extreme package 2GB+256MB addon RAM. It a muti author site where people are engaged in writing posts, comments, updating status ...
5
votes
1answer
3k views
How to reduce number of sockets in TIME_WAIT?
Ubuntu Server 10.04.1 x86
I've got a machine with a FCGI HTTP service behind nginx, that serves a lot of small HTTP requests to a lot of different clients. (About 230 requests per second in the peak ...
0
votes
1answer
148 views
erratic response times with Apache 2.0.52 on redhat 4
Under load, we've noticed response times from Apache vary greatly for the same 7k image. It can range anywhere from .01 seconds to 25 seconds or greater. Unfortunately, due to corporate policy ...
10
votes
3answers
857 views
The downsides of using nginx as a primary web server?
I've seen millions of websites using nginx as a proxifying webserver working together with Apache. But I've seen very few servers running nginx only as their default webserver. What are the main ...
2
votes
8answers
479 views
Suggestions for programming language and database for a high end database querying system (>50 million queries a day)?
These requirements are sketchy at the moment, but will appreciate any insights. We are exploring what would be required to build a system that can handle 50 database million queries a day - ...
8
votes
4answers
4k views
High load on a nagios server — How many service checks for a nagios server is too many?
I have a nagios server running Ubuntu with a 2.0 GHz Intel Processor, a RAID10 array, and 400 MB of RAM. It monitors a total of 42 services across 8 hosts, most of which are checked using the ...
1
vote
4answers
4k views
What is the recommended glusterFS configuration for a growing website?
I have a website that is tracking towards 50 million hits per day average, and within the next 3 months should be over 100 million hits per day. We are trying to use GlusterFS v 3.0.0 (with latest ...
3
votes
2answers
515 views
Inexplicably high total CPU usage when itemized view shows less
I'm having issues with CPU usage on a WinServ08 machine: Effectively, the CPU usage (and more noticeably on core 0 out of 3) is higher than I'd think, and task manager (when sorted by CPU %) shows ...
1
vote
5answers
321 views
What are the tradeoffs between a VMware VM and a local machine for scientific CPU intensive computing?
I have a computing task that will probably run non-stop for several weeks with occasional restarts. My IT folks seem to feel a VMware machine set up on our corporate servers would be a better solution ...
3
votes
7answers
2k views
Expecting High traffic on website..How to manage
I am expecting high traffic on a corporate website i am managing.At present the website is hosted on godaddy shared hosting.
As it will be an IPO for my clients company so i don't have any idea what ...
0
votes
3answers
184 views
hosting country for a global site
For a high traffic global web site is it efficient to change the hosting country to out of US ?
I have to make a decision between colocating our own servers nears us vs dedicated server solution at ...
