For more information, see NFS support.Protiviti’s Jim DeLoach discusses one of the more pervasive issues falling within senior management’s and the board’s purview. The kernel for these operating systems received backported versions of the fixes and enhancements applied to NFS v4.1. Analyzing various metrics on your application architecture and resource requirements helps you determine whether you should reconfigure your application or instance according to your requirements.įor optimal performance and to avoid a variety of known NFS client bugs, it's a best practice to use an AMI that has a Linux kernel version 4.0 or newer.Īn exception to this rule is RHEL and CentOS 7.3 and newer. To check if EC2 is under-provisioned for your application requirements, monitor Amazon EC2 CloudWatch metrics, such as CPU, Amazon Elastic Block Store (Amazon EBS), and so on. A resource crunch on the EC2 instance might affect your application's ability to use EFS effectively. Also, benchmark the host or service that your application is hosted on, such as Amazon EC2, AWS Lambda, and so on. If your application using the file system isn't driving the expected performance from EFS, optimize the application. Metering: How Amazon EFS reports file system and object sizes. Any operation that requires the system to fetch for the address of a specific block is considered to be a metadata-intensive workload. Metadata I/O occurs if your application performs metadata-intensive, operations such as, "ls," "rm," "mkdir," "rmdir," "lookup," "getattr," or "setattr", and so on.This causes the overhead of each operation to increase. Performance on shared file systems suffers if a workload or operation generates many small files serially.Due to this per-operation latency, overall throughput generally increases as the average I/O size increases because the overhead is amortized over a larger amount of data. This distributed architecture results in a small latency overhead for each file operation. When the file sizes are small because it's a distributed system.For more information on throughput modes, see How do Amazon EFS burst credits work? Types of operations performed on the EC2 instanceĮFS performance suffers in the following situations: For provisioned mode, a throughput for your file system is set in MB/s, independent of the amount of data. In bursting mode, the greater the size of the EFS file system, the higher the throughput scaling. To analyze the throughput and IOPS that's consumed by your file system, see Using metric math with Amazon EFS.Īmazon EFS also scales up to petabytes of storage volume and has two modes of throughput: bursting and provisioned. In the case of bursting throughput mode, you can increase the size of Amazon EFS using dummy files to increase the baseline throughput. When you select provisioned throughput, select the values that accommodate your workload requirements properly. It's a best practice to benchmark your workload requirements to help you select the appropriate throughput and performance modes. The configured throughput and IOPS affects the performance of Amazon EFS. Amazon EFS is designed to burst to high throughput levels for periods of time. To determine what performance mode to use, see What are differences between General Purpose and Max I/O performance modes in Amazon EFS?įile-based workloads are typically spiky, driving high levels of throughput for short periods, but driving lower levels of throughput for longer periods. Applications can scale their IOPS elastically up to the limit associated with the performance mode. Amazon EFS offers two performance modes, General Purpose and Max I/O.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |