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Re: NFS writing poor performance

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  • vasanag
    I tried them but the behavior was the same. I am afraid that somewhere else is the problem. I mounted also to my NSLU2, a FAT32 formatted flash disk and I
    Message 1 of 6 , Dec 1, 2009
      I tried them but the behavior was the same.

      I am afraid that somewhere else is the problem. I mounted also to my
      NSLU2, a FAT32 formatted flash disk and I shared it through SAMBA and
      again I had similar writing speed problems. (more than 6 min for a 60
      MB file)

      As I noticed on a previous email, sometimes the writing speed becomes
      zero for more than a minute. It's like the NSLU2 is struggling to write
      to the flash disk!!!

      Do you have any ideas?



      stanley_p_miller_qaz wrote:
      > Try this set of options in your Ubuntu /etc/fstab file.
      >
      > noatime,rsize=8192,wsize=8192
      >
      >
      > --- In nslu2-linux@yahoogroups.com, vasanag <vasanag@...> wrote:
      >> Gurus,
      >>
      >> I am experiencing very slow writing speed on my NFS share on my UNSLUNG.
      >>
      >> To write a file of 40 MB from my UBUNTU machine to the NSLU2 I need 3
      >> min 15 sec.
      >>
      >> To read back the same file to UBUNTU, I need only 15 secs!!!!!!
      >>
      >> What is going on here? Am I missing something?
      >>
      >>
      >> ************
      >>
      >> On my NSLU2 running UNSLUNG 6.10
      >>
      >> # mount
      >> ......
      >> /dev/sdb1 on /share/hdd/data/USB_D1 type ext3 (rw,noatime)
      >>
      >>
      >> # cat /etc/exports
      >> /share/hdd/data/USB_D1 192.168.2.*(rw,sync,no_root_squash)
      >>
      >>
      >> ***********
      >>
      >> On UBUNTU
      >>
      >> To mount the share
      >>
      >> sudo mount 192.168.2.2:/share/hdd/data/USB_D1 /home/anagnost/mnt/nfs_nslu
      >>
      >>
      >> TIA
      >> vasanag
      >>
      >
      >
      >
      >
      > ------------------------------------
      >
    • vasanag
      Finally, I found out that the problem persists only with USB flash disks!!! When I connect an ext3 USB hard disk everything is working fine. Strange, isn t
      Message 2 of 6 , Dec 3, 2009
        Finally, I found out that the problem persists only with USB flash
        disks!!! When I connect an ext3 USB hard disk everything is working fine.

        Strange, isn't it?

        Thanks, anyway.



        vasanag wrote:
        > Gurus,
        >
        > I am experiencing very slow writing speed on my NFS share on my UNSLUNG.
        >
        > To write a file of 40 MB from my UBUNTU machine to the NSLU2 I need 3
        > min 15 sec.
        >
        > To read back the same file to UBUNTU, I need only 15 secs!!!!!!
        >
        > What is going on here? Am I missing something?
        >
        >
        > ************
        >
        > On my NSLU2 running UNSLUNG 6.10
        >
        > # mount
        > ......
        > /dev/sdb1 on /share/hdd/data/USB_D1 type ext3 (rw,noatime)
        >
        >
        > # cat /etc/exports
        > /share/hdd/data/USB_D1 192.168.2.*(rw,sync,no_root_squash)
        >
        >
        > ***********
        >
        > On UBUNTU
        >
        > To mount the share
        >
        > sudo mount 192.168.2.2:/share/hdd/data/USB_D1 /home/anagnost/mnt/nfs_nslu
        >
        >
        > TIA
        > vasanag
        >
        >
        >
        > ------------------------------------
        >
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