Faster file writing on sshfs mounted directory

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http://serverfault.com – Here is the following scenario: I have server1 and server2 and using sshfs I mount a directory from server2 on server1, let's say /mnt. Now, if I try to unpack a 50K files archive on server1:/mnt it takes 13 mins to complete while doing the same on server1:/local_dir will only take some 5 seconds. I was wondering if there is any way/configuration that could speed up the things. (HowTos)