[Gluster-users] Gluster samba vfs read performance slow

[Anand Avati]

How are you testing this? What tool are you using?

Avati


On Tue, Sep 17, 2013 at 9:02 PM, kane <stef_9k at 163.com> wrote:

> Hi Vijay
>
>         I used the code in https://github.com/gluster/glusterfs.git with
> the lasted commit:
> commit de2a8d303311bd600cb93a775bc79a0edea1ee1a
> Author: Anand Avati <avati at redhat.com>
> Date:   Tue Sep 17 16:45:03 2013 -0700
>
>     Revert "cluster/distribute: Rebalance should also verify free inodes"
>
>     This reverts commit 215fea41a96479312a5ab8783c13b30ab9fe00fa
>
>     Realized soon after merging, ….
>
> which include the patch you mentioned last time improve read perf, written
> by Anand.
>
> but the read perf was still slow:
> write: 500MB/s
> read: 77MB/s
>
> while via fuse :
> write 800MB/s
> read 600MB/s
>
> any advises?
>
>
> Thank you.
> -Kane
>
> 在 2013-9-13，下午10:37，kane <stef_9k at 163.com> 写道：
>
> > Hi Vijay，
> >
> >       thank you for post this message, i will try it soon
> >
> > -kane
> >
> >
> >
> > 在 2013-9-13，下午9:21，Vijay Bellur <vbellur at redhat.com> 写道：
> >
> >> On 09/13/2013 06:10 PM, kane wrote:
> >>> Hi
> >>>
> >>> We use gluster samba vfs test io,but the read performance via vfs is
> >>> half of write perfomance,
> >>> but via fuse the read and write performance is almost the same.
> >>>
> >>> this is our smb.conf:
> >>> [global]
> >>>        workgroup = MYGROUP
> >>>        server string = DCS Samba Server
> >>>        log file = /var/log/samba/log.vfs
> >>>        max log size = 500000
> >>> #       use sendfile = true
> >>>        aio read size = 262144
> >>>        aio write size = 262144
> >>>        aio write behind = true
> >>>        min receivefile size = 262144
> >>>        write cache size = 268435456
> >>>        security = user
> >>>        passdb backend = tdbsam
> >>>        load printers = yes
> >>>        cups options = raw
> >>>        read raw = yes
> >>>        write raw = yes
> >>>        max xmit = 262144
> >>>        socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=262144
> >>> SO_SNDBUF=262144
> >>>        kernel oplocks = no
> >>>        stat cache = no
> >>>
> >>> any advises helpful?
> >>>
> >>
> >> This patch has shown improvement in read performance with libgfapi:
> >>
> >> http://review.gluster.org/#/c/5897/
> >>
> >> Would it be possible for you to try this patch and check if it improves
> performance in your case?
> >>
> >> -Vijay
> >>
> >
>
>
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