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Jasmine Lognnes
Asked: 2016-12-02 08:41:56 +0800 CST

Why very slow / no directory caching with SSHFS?

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I have the below in /etc/fstab and when I cd ~/dat0 and then do anything in there e.g. tab complete, it takes 10 seconds every time. I.e. it doesn't cache anything.

Is there something that can be done to speed this up?

ss@dat0: /home/ss/dat0 fuse.sshfs defaults,_netdev,identityfile=/home/ss/.ssh/id_rsa,uid=1000,gid=1000,allow_other 0  0
linux mount bash fstab sshfs

1 Answers

  1. What system are you on? What versions of sshfs and fuse are you running? I'm on ubuntu server 18.04 and using authorized keys for auth.

    This my fstab:

    sshfs#user@server:/var/path/  /home/user/path  fuse defaults,allow_other,uid=111,gid=115,noauto 0   0

    and versions:

    fuse             2.9.7-1ubuntu1  amd64    
libfuse2:amd64   2.9.7-1ubuntu1  amd64
sshfs            2.8-1           amd64

    Here's some output from timing ls -l

    $ time ls -l | wc -l
1259

real    0m0.160s
user    0m0.010s
sys     0m0.012s

    A remote directory with 1259 files or folders listed pretty quickly.

    I don't know if it may make a difference or not but I also have:

    UseDNS no

    In my /etc/ssh/sshd_config file. It speeds up initial logins

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