Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #199232

Re: Slow XFS write

From Michael Stone <mstone@debian.org>
Newsgroups linux.debian.user
Subject Re: Slow XFS write
Date 2018-08-22 15:20 +0200
Message-ID <wpBdf-7ZL-3@gated-at.bofh.it> (permalink)
References <wpy5I-606-7@gated-at.bofh.it> <wpzl8-6TX-5@gated-at.bofh.it> <wpAqR-7up-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Wed, Aug 22, 2018 at 02:25:51PM +0200, Martin LEUSCH wrote:
>I tested write speed with dd command like "dd if=/dev/zero of=/var/srv/nfs/
>testfile bs=1G count=1 oflag=direct".
>The 10 MB/s for the data partition also correspond to the behavior I get in
>real situation, when I copy a big file on NFS, 12GB are copied quickly then
>hang for 15 or 20 minutes. When I copy big file with scp, It copy quickly the
>at the beginning then decrease to 10 MB/s till the end.

what happens with
dd if=/dev/zero of=/var/srv/nfs/testfile bs=64k count=16k conv=fsync

And this is direct on the server, not via NFS, right?

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Slow XFS write Martin LEUSCH <sce.tech@imereos.fr> - 2018-08-22 12:00 +0200
  Re: Slow XFS write Michael Stone <mstone@debian.org> - 2018-08-22 13:20 +0200
    Re: Slow XFS write Martin LEUSCH <sce.tech@imereos.fr> - 2018-08-22 14:30 +0200
      Re: Slow XFS write Michael Stone <mstone@debian.org> - 2018-08-22 15:20 +0200
        Re: Slow XFS write Martin LEUSCH <sce.tech@imereos.fr> - 2018-08-22 16:10 +0200
          Re: Slow XFS write Michael Stone <mstone@debian.org> - 2018-08-22 18:00 +0200
            Re: Slow XFS write Michael Stone <mstone@debian.org> - 2018-08-22 18:00 +0200
  Re: Slow XFS write Martin LEUSCH <sce.tech@imereos.fr> - 2018-08-22 16:20 +0200
    Re: Slow XFS write Reco <recoverym4n@gmail.com> - 2018-08-22 19:40 +0200
  Re: Slow XFS write Stefan K <shadow_7@gmx.net> - 2018-08-23 09:10 +0200
    Re: Slow XFS write Martin LEUSCH <sce.tech@imereos.fr> - 2018-08-23 11:20 +0200

csiph-web