1
vote
1answer
101 views

Will a SSD storage perform like a magnetic for small root volumes in AWS EC2?

I have a t1.micro instance with 8GB of magnetic EBS volume as it's root disk with a LAMP environment on it. I thought that I will upgrade it to t2.micro with 8GB of General Purpose SSD volume. ...
1
vote
1answer
78 views

can Iowait cause significant RAM consumption increase

I have a node.js process running continuously on a linux EC2 instance, it extracts data and stores it in mysql. Some reads are also performed on the database. The process can run well during hours or ...
1
vote
1answer
2k views

How to troubleshoot slow performance on AWS EC2/RDS?

We recently moved our web servers from some 10 year old boxes to AWS EC2. Usage of the site is currently higher now (it's our busy season) and the site has become much slower, which is unexpected ...
0
votes
2answers
964 views

Bad disk performance on m3.medium (SSD) EC2 instance [closed]

May be I'm missing something but at a glance new SSD-based m3.medium EC2 instance doesn't provide any disk performance advantage. I didn't run benchmark tools yet, but directory copying, directory ...
1
vote
0answers
131 views

Why does Process Explorer cause highly targeted failure of some applications / basic UI functions in a high-power EC2 Windows instance?

Update: I have determined that Process Explorer itself - the program I am using to debug a performance issue - seems to be the cause of the issue. See note, with updated question, at end. I am ...
0
votes
1answer
258 views

improving sphinx search performance on an ec2 architecture

I'm working on a m1.large instance in ec2. m1.large 64-bit vCPU -2 ECU-4 Memory -7.5GB DIsks-2 x 420 EBS-Optimized - Yes Network performance: Moderate the index files are on an EBS block with ...
-1
votes
2answers
158 views

Raid0 IOPS poor performance [closed]

I've set up 8x500gb disks in raid0 on an EBS optimized EC2 instance and I ran iops.py to check the speed, but it seems really slow. Does anyone know if this is normal speeds for raid0? I'd think I'd ...
3
votes
1answer
296 views

How to have proper expectations about AWS performance?

I'm in the process of moving a webapp from the local server that's been its development home to somewhere else for eventual deployment. I'm currently evaluating AWS and Rackspace, and am in the ...
1
vote
1answer
158 views

IIS site slows down even though there is lots of CPU and RAM left? speeds up if users are split

I have a .net web application on IIS and the site was running very slow(on AWS EC2 medium server 2012). CPU usage and RAM usage are both down very low. I started up another EC2(medium server 2008) ...
1
vote
1answer
484 views

Amazon EC2 Server running very slow

I have a c1.medium tier server running Ubuntu 12.04 on AWS EC2. We use it as a development server, hosting between 5-8 Drupal 7 sites on it. Recently the server has been performing very slowly and ...
1
vote
6answers
2k views

How to know if my nginx is in good health?

I am running a nginx on EC2 (m1.small) for SSL termination. I am using 2 workers on Ubuntu, with latest nginx (stable), the network throughput is around 2Mbps and system load average is around 2 to ...
0
votes
1answer
308 views

How does AWS Provisioned IOPS EBS volumes compare to dedicated disk [closed]

In the past, no one can answer the performance difference as they are not well documented. Now AWS offer Provisioned IOPS EBS volumes Let say you now you buy 1000 IOPS, how does this value compare ...
0
votes
1answer
616 views

High CPU Steal percentage on Amazon EC2 Instance

I am experiencing high CPU steal percentage in a Amazon EC2 large instance. I know it means that my virtual CPU is waiting on the real CPU of the machine for time. My question is that what can I do to ...
0
votes
1answer
94 views

Looking for the best ec2 setup for 3 sites totaling in 1.5 mil in traffic monthly [closed]

I am looking to consolidate our current aws setup of 2 Large ubuntu ec2 servers and 2 large RDS server for our 3 websites that have a total of about 1.5 million hits a month and increasing every month ...
2
votes
1answer
1k views

Cause of slow download speed on a particular EC2 instance?

I have a networking issue I'm trying to solve. I have two EC2 instances, same zone, same type. On one of the two EC2 instances (the 'bad' instance), the download speed is really poor (200k/s), while ...
0
votes
1answer
249 views

Difference in performance: local machine VS amazon medium instance

I see a drastic difference in performance matrix when i run it with apache benchmark (ab) in my local machine VS production hosted in amazon medium instance. Same concurrent requests (5) and same ...
0
votes
1answer
134 views

loading testing from a one ec2 linux/ubuntu instance to another ec2 linux/ubuntu instance

I wanna run a load/stress testing on ubuntu ec2 small instance. I could have done it using Jmeter from my laptop itself, but that would actually consume lot of bandwidth and also I feel I cant get the ...
4
votes
2answers
4k views

Ec2 micro instance, EBS, I/O and speed. How can I improve performance?

I have a micro instance mounted with an EBS volume. I have to pay per million read/writes to the EBS volume. But by the very nature of EBS I/O is very slow and consequently services like MySql is ...
0
votes
3answers
821 views

RMagick on EC2/Nginx/Passenger performance is horrible

I have a small RoR app that generates images using RMagick and the performance is not anywhere near where I thought it would be. The server configuration is a 64-bit Ubuntu 11.04 image on EC2 running ...
0
votes
4answers
418 views

Increase application performance on Amazon AWS

I've got a client with an MVC v1 (.NET) application running on a micro instance. On this instance, I've got .NET, IIS 7.5, and MS SQL Server 2008 running to handle the application. The client has ...
0
votes
1answer
297 views

Figuring out memory hogging process in a Linux centos machine

I have a micro instance of Centos AMI from EC2 to run my dev instances. Applications keep on blowing off due to memory issues. How can I find out process that are taking memory and take decisions ...
2
votes
1answer
853 views

AWS Free Usage Tier + Cloudflare… possible?

If I throw my MySQL/PHP app up on a Amazon EC2 instance (using their AWS Free Usage Tier program) and couple it with CloudFlare (the free plan of course) roughly how many daily visitors can I ...
3
votes
1answer
395 views

Choosing between Windows Server 2008 R2 and Windows Server 2008?

Can you help me to decide which version of windows to use? Any actual performance comparisons? I am going to setup number of servers (2-10) to host asp.net mvc application in Amazon EC2 with Load ...
74
votes
4answers
12k views

Why is TCP accept() performance so bad under Xen?

The rate at which my server can accept() new incoming TCP connections is really bad under Xen. The same test on bare metal hardware shows 3-5x speed ups. How come this is so bad under Xen? Can you ...
13
votes
3answers
2k views

Some Linux systems become very slow when Redis is loading a big dataset

I received a report from a Redis user, and I'm not sure what to reply as I'm not an expert in the area of Linux and its scheduler, however we (as the Redis project) need to figure this kind of issues ...
1
vote
4answers
762 views

Tunning Apache and server for massive photo uploads

I got an Apache webserver running in a EC2 platform. It's receiving a lot of uploads from users (big pictures files). The problem is that immediately after upload I have to convert images to other ...
0
votes
1answer
55 views

Optimal hosting of website and platform api on EC2

We intend to deploy a web site (based on Drupal) and the associated platform api on Amazon EC2. Would like to know what would be a better way to architect this solution w.r.t to instances (meaning ...
0
votes
1answer
302 views

Running game server and webserver on EC2

Hey guys, I have a webhost, and an EC2 server (to run a game server on). The problem is that I want to access/modify the EC2's files with php admin programs. I looked into a lot of options to just ...
0
votes
2answers
402 views

Amazon EC2 performance vs desktop

I'm wondering how to compare performance of EC2 instances with standard dedicated servers and desktop. I've found only comparance of defferent clouds. I need to find a solution to perform some ...
4
votes
3answers
903 views

EC2: Regular performance issues without obvious resource contention

We are running LAMP+memcached on an Ubuntu 9.10 x64 xlarge Amazon EC2 instance. This server handles a few hundred requests per second, of which about 60% are static and the remainder all interact with ...
1
vote
4answers
764 views

Fast and secure download from Amazon EC2/RDS/S3?

I'm downloading periodically gzipped database dumps from my AWS setup (roughly 150MB). Although normal http/https download speeds (via Apache file serving) are >>300kb/sec, when I use scp for ...
1
vote
2answers
1k views

MySQL: Load database to memory

Is there a way to load an entire MySQL database to the RAM, especially on en EC2 server? The database is quite small (~500 MegaBytes) I have enough memory Speed issues are crucial - the resulted ...
1
vote
1answer
791 views

Very Slow Sequential Reads over NFS from an XFS disk in Amazon EC2

I am using tiobench to test performance of an NFS mounted volume, and notice that Sequential Reads are much slower than Random Reads. This isn't the behavior when I run the same test on the disk ...
8
votes
5answers
4k views

Which is faster for read access on EC2; local drive or EBS?

Which is faster for read access on an EC2 instance; the "local" drive or an attached EBS volume? I have some data that needs to be persisted so have placed this on an EBS volume. I'm using ...