This page provides troubleshooting information to help address latency issues you might encounter while using Filestore.
Latency when mounting and unmounting a file share
When mounting a file share using the default mount options, the mount command attempts to discover the supported transport method of the Filestore instance, which introduces a three-second latency.
The mountd daemon first tries to use UDP, which Filestore doesn't
support. Once the initial try times out, it falls back to TCP. To bypass this
discovery process and eliminate the added latency, you can specify the tcp
mount option, for example:
sudo mount -o tcp 10.0.0.2:/vol1 /mnt/nfs
This mount option is especially important if you're
automounting with autofs.