I am running a raw block copy of one ec2 instance to another ec2 instance over a local ssh connection using a large block size of 16MB.
ssh -i ~/.ssh/id_rsa [email protected] 'sudo dd if=/dev/xvda1 bs=16M' | dd of=./monolithic.image.raw
When it starts, I am getting over 700 Mbit/s... Very good, but suddenly about 30 seconds into the copy, it slows down dramatically and reduces to little blurbs/blocks of data:
Any ideas why? Any ideas how to improve network throughput and keep it consistent?