Right now I am rsync'ing data from my laptop at home to an EBS volume attached to a m5.large. The write latencies I am seeing are ridiculously high (>15s).
My EC2 instance is EBS-optimized and read latencies look normal. The EBS volume is 300 GB and a gp2 (SSD) volume. My baseline IOPS for this configuration should be 900 IOPS and I am nowhere near that number right now. On top of that my burst credit balance is close to 100%.
Can anyone give insight on why I would see such bad performance?