Performance Tuning Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $150 - Posted
We're looking for someone to investigate the reason of our current performance problems within our Ceph cluster. At the moment, the setup is the following: - 3 hosts with 4 OSDs each (4TB SAS 12Gbps drives): total of 12 OSDs - S3710 200GB SSD for Journal on each host - 10GB for public network, 10GB for private replication network We are seeing very low performance numbers in "rados bench". The w_await inside KVM nodes connected to it is extremely high (spikes up to 1500ms), however, the journals still work really fast (0.0x ms write) according to iostat. We are looking to move towards an all SSD cluster eventually however if we cannot resolve those writes problems, we will struggle to deal with an SSD cluster. We need an expert who can trace down the problem and resolve it. We're very technical in KVM and server administration but not in Ceph.
Skills: Performance Tuning Linux System Administration Ubuntu
Hourly - Entry Level ($) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
I am looking for an experienced Devops freelancer who can conduct training sessions on the questions asked in interview. The trainer must be able to 1. Give a clear picture on the interview questions asked for experienced candidate 2. How to provide appropriate answers 3. Project based questions 4. Maintain confidentiality of the candidate's details Knowledge on Chef and Linux Administration is desirable. Price Negotiable
Skills: Performance Tuning Amazon Web Services Automated Testing DevOps
Hourly - Intermediate ($$) - Est. Time: 1 to 3 months, 10-30 hrs/week - Posted
Web and mobile app server running Django (Python 2.7) with Apache/WSGI web server and Mongo/PostGIS databases requires system admin to optimize and troubleshoot responsiveness of the app. Currently one of the Django app runs without issue most of the time while another Django app on the same server with a different port runs without issue for 5-10 minutes after which a server and database restart is required as clicking on links causes the web browser to remain loading for an extended period of time. Sometimes clicking on a link multiple times is required to load a page. Server and database logs do not show any activity when clicking on links. Connections are less than 10. This is an initial job after which the freelancer can continue working on other servers as needed on an hourly basis for a longer period of time.
Skills: Performance Tuning Apache administration Application Server CentOS
Fixed Price Budget - Intermediate ($$) - $1,500 to $2,000 - Posted
Payara Ltd. is building a location-based service for users. The selected developers will build mobile apps for iOS, Android and Windows Phone platforms. They can reuse the existing code base used in an Android proof-of-concept (POC) app. The existing code and UI design will be provided to the development team. In addition to front-end development, there will also be some backend development tasks. These tasks include optimizing the performance of the relational database backend hosted on AWS, and writing server-side scripts. Project is intended to be expand beyond the MVP. Much of the ground work is already available and will be provided to the developer as a starting point. Price of the project is open to discussion.
Skills: Performance Tuning Amazon Relational Database Service Relational Databases SQL Server Integration Services (SSIS)
Fixed-Price - Intermediate ($$) - Est. Budget: $120 - Posted
The job is to find and fix Druapl website performance issues. I've got a simple website running Drupal 7 as Azure Web Role with Azure SQL connected as database. Every page on the website is generated slowly > 3 seconds which is annoying. The work is to find the cause of the performance issues, report it, and fix it. Providing a sample of such a technical report and\or your approach to troubleshoot the issue would be a plus. Notes: Database queries last around 100-500 ms. Local DB caches are already set. As the site runs on Azure there is no direct access to operating system behind the web server (which is IIS), FTP access only available. Basic profiling shows Drupal takes less than 50% of available RAM and less than 10% CPU. The load is lite - site is to handle around 500-1500 users per day. It seems like a module misconfiguration or something alike that stumbles the performance.
Skills: Performance Tuning Drupal Software Debugging SQL
Hourly - Expert ($$$) - Est. Time: More than 6 months, 30+ hrs/week - Posted
The primary of expertise of our company is Machine Learning. We have a highly successful desktop software offering and working hard to provide a Cloud-scale end-to-end system to benefit our existing clients and expand to new markets. Web Frontend plays two very important roles * Serves as the default portal to Cloud Machine Learning resources we provide. * Facilitates rapid development cycle. Our desktop offerings are going to talk to Machine Learning backend too, using the stable version of RESTful APIs. Web Frontend is expected to be agile enough to make newly developed functionality available for testing. Requirements * Comprehensive knowledge of JavaScript ES6 on Node.JS (with babel) * Advanced experience in Isomorphic JavaScript Application development * Advanced experience with the cutting edge technologies ** ReactJS ** Redux (or alternatives) ** Immutable.JS * Experience with RESTful API (OpenAPI Specification) * Working experience with HTML & CSS Desired Skills * Basic Linux shell experience * Software Architecture. Design Patterns. * Software Performance optimization. * Test-driven development. * Agile software development. * Data Visualization. * Contribution to Open Source projects.
  • Number of freelancers needed: 2
Skills: Performance Tuning CSS CSS3 Data Visualization
Fixed-Price - Expert ($$$) - Est. Budget: $50 - Posted
We have 2 dedicated servers. One server contains a VM in which nginx is running. Another server contains a VM in which a database mysql is running. We have configured nginx and connected to mysql. The setup is fine and working correctly. However what we have noticed an issue with performance of page loading. There is no issue with the application code, because same code and database is running on another server already. Its a live site and we had to migrate to our servers. And on live site, we are not facing this issue. So there is no need of doing any application level optimizations. However what is required to be done is debug the setup and check why the page loading is taking time whenever any node save happens and fix it. Skills required 1. Experience with performance tuning 2. Nginx 3. Drupal and mysql 2. Load testing 3. Drupal setup 4. Experience with Nginx and mysql
Skills: Performance Tuning Apache administration Drupal Linux System Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
Need a Vocal Tuning specialist, a melodyne GURU , to tune up vocals for me! I am a producer in Miami, FL... tonysuccar.com , please check my website so you can see the quality of work I do. I tune vocals all the time, but right now i have a project where I don't have the time to tune all the vocals for. Please send me links to your best work... and send me a price for 4 songs, just ONE track of LEAD vocals. This is to start ASAP! It needs to be done to perfection. Let me know how familiar you are with melodyne, how long you've been doing this... as all of us producers know, this step is perhaps one of the most critical.. i am SUPER anal with my lead vocals, and the tuning.. that it has to be pin perfect, but not sound at all as if its auto-tuned. This job is for just this project, however, if we work well and i like you a lot, i definetely will throw a lot more work at you. I have massive projects lined up in the pipeline and i need post production guys now that can help me out because of time. thanks! Again, only PROS please.
Skills: Performance Tuning Celemony Melodyne Music Music Producing