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The ServInt Source

Why is My VPS Slow?

277945267_23c08b55b9Does your website load slowly?

Have you upgraded into a “professional” hosting package only to find that your new VPS lacks the performance you were promised?

Lackluster server performance has been a thorn in the side of VPS hosting customers for some time. Many buyers have learned to pay attention to server specs — getting as much RAM, as many CPU cores and as much disk space as possible for their money. But others have realized that spec shopping alone won’t guarantee performance.

But why not? Why can’t VPS customers simply buy a server with more RAM, CPU and disk and trust that they will get the boost in server performance they require?

The problem most often comes down to something called the “noisy neighbor.”

The noisy neighbor explained

The noisy neighbor is the customer on a server who uses more than his or her fair share of server resources. Over the years, cloud/communal hosting services, including those that use VPS, have succeeded in building systems that eliminate the noisy neighbor problem for RAM, CPU, network throughput and disk space — basically every critical, performance-related server resource except one: IOPS.

Disk IOPS (or Input/Output operations Per Second) have traditionally remained one of the last truly shared resources in VPS and cloud environments. All VPS hosting service providers face the same problem: if one user slams the disk of a VPS or cloud environment with a lot of read/write requests, all the customers on that hardware suffer a slowdown. And with few ways for customers or hosting providers to measure customer IOPS usage, noisy neighbors can operate in the background, untraceable — with only the resulting slow server performance or their neighbors as evidence. It’s a little-known fact, but IOPS hogging is the number one cause of “mystery” site slowdowns in the VPS industry.

This lack of guaranteed IOPS performance and protection from noisy neighbors is what has continued to drive some customers — who can use the extra power and afford the price tag — to invest in dedicated servers, even as the benefits of virtualization grow everyday.

Now, however, you have another choice. For the first time, VPS and cloud hosting customers can purchase a server with guaranteed IOPS without investing in a dedicated server. ServInt’s SolidFire SSD VPS combines a super-fast, all-flash storage architecture that delivers the performance and predictability of dedicated storage at the price point of a public cloud.

How do we guarantee IOPS and prevent noisy neighbors from slowing down your VPS? First, we removed the disks from our VPS host machines and replacing them with a vast SSD cloud storage array. Then, using ServInt’s SimpleScale and SolidFire technologies, we were able to set the number of IOPS each customer has access to in the storage cloud. The service tier you choose has a certain number of IOPS, and you know that no one else has access to those IOPS. They are 100% guaranteed, as is every other critical server resource you purchase.

If you are considering upgrading into a VPS to secure the performance you need for your growing website and applications, make sure you invest in a hosting package that can guarantee all your server resources for the speed you require. With ServInt’s SolidFire SSD VPS, you now have the storage technology to ensure that your applications won’t be affected by that annoying noisy neighbor.

Photo by Ed Costello.

About Andrew Loschert

Andrew Loschert is the editor of the ServInt Source and the Marketing Manager for ServInt.

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