Xen and NFS performance

When I just started to read planet.debian.org today, I realized that Russel Coker was speaking of an unknown tool to print the UUID, but that Debian version doesn’t seem to do that.

broken font rendering

It’s called fle apparently.
Sadly, an apt-cache showed that there’s no package named fle. Then I realized that he was actually speaking of the good old tool called file – with an I between F and L!
Really, I wish the font rendering will improve in Lenny as this was on Etch… *sigh*

Uncategorized

4 thoughts on “Xen and NFS performance

  1. I've seen similar problems with CIFS/SMB over UDP. Once I tried using a Xen host to copy from an NFS NAS to a samba share — I started to see NFS timeouts!

  2. these are my nfs otions client side
    hard,intr,rw,rsize=8192,wsize=8192,nolock,bg

    and these server side:
    rw,async,no_subtree_check

    I'm not sure this is the best you can do, but it seems working fine.
    do you mind to share your settings ?

    ps: I trust you with my email address … ­čÖé

  3. My settings are:

    Client:
    rw,tcp,async

    Server:
    rw,sync,no_root_squash,no_all_squash,subtree_check

  4. did you check if it possible to use jumbo frames with xen ?
    basically the idea is to have a mtu of 9000 . This works well
    with gigabit networks, but I'm wondering if it is possible to do the
    same with xen…

    Reg the nfs options, I suspect that most of the options we specify are
    already the default. I've noticed that using async (even if may lead to problems in some case) speeds up things considerably.

    Consider also a bigger rsize then the default one.

Comments are closed.