[Gluster-users] Very slow ls

[Mathieu Chateau]

Hello,

As you are in replicate mode, all write will be send synchronously to all
bricks, and in your case to a single hdd.

Writes: you are going to have same perf as 1 single hdd (best case
possible, you will have less)
read: all brick will be queried for metadata, one will send the file (if I
am correct)

For sure I wouldn't go for 60+ users with this setup, maybe except if these
hdd are ssd

just my 2 cents

Cordialement,
Mathieu CHATEAU
http://www.lotp.fr

2015-08-03 23:29 GMT+02:00 Florian Oppermann <gluster-users at flopwelt.de>:

> > If starting setup right now, you should start with current version
> (3.7.X)
>
> Is 3.7 stable? I have 60+ potential users and dont want to risk too
> much. ;-)
>
> > Filesystem
>
> XFS partitions on all bricks
>
> > network type (lan, VM...)
>
> Gigabit LAN
>
> > where is client (same lan?)
>
> Yep
>
> > MTU
>
> 1500
>
> > storage (raid, # of disks...)
>
> The bricks are all on separate servers. On each is a XFS partition on a
> single HDD (together with other partitions for system etc.). All in all
> there are currently seven machines involved.
>
> I just noticed that on all servers the
> /var/log/glusterfs/etc-glusterfs-glusterd.vol.log is full of messages like
>
> > [2015-08-03 21:24:59.879820] W [socket.c:620:__socket_rwv] 0-management:
> readv on /var/run/a91fc43b47272ffaace2a6989e7b5e85.socket failed (Invalid
> argument)
>
> I assume this to be part of the problem…
>
> Regards :-)
> Florian
>
> On 03.08.2015 22:41, Mathieu Chateau wrote:
> > Hello,
> >
> > If starting setup right now, you should start with current version
> (3.7.X)
> >
> > We need more data/context as you were able to feed 150GB before having
> > issue.
> >
> > Info:
> > Filesystem
> > network type (lan, VM...)
> > where is client (same lan?)
> > MTU
> > storage (raid, # of disks...)
> >
> > Cordialement,
> > Mathieu CHATEAU
> > http://www.lotp.fr
> >
> > 2015-08-03 21:44 GMT+02:00 Florian Oppermann <gluster-users at flopwelt.de
> > <mailto:gluster-users at flopwelt.de>>:
> >
> >     Dear Gluster users,
> >
> >     after setting up a distributed replicated volume (3x2 bricks) on
> gluster
> >     3.6.4 on Ubuntu systems and populating it with some data (about 150
> GB
> >     in 20k files) I experience extreme delay when navigating through
> >     directories or trying to ls the contents (actually the process seems
> to
> >     hang completely now until I kill the /usr/sbin/glusterfs process on
> the
> >     mounting machine).
> >
> >     Is there some common misconfiguration or any performance tuning
> option
> >     that I could try?
> >
> >     I mount via automount with fstype=glusterfs option (using the native
> >     fuse mount).
> >
> >     Any tips?
> >
> >     Best regards,
> >     Florian Oppermann
> >     _______________________________________________
> >     Gluster-users mailing list
> >     Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
> >     http://www.gluster.org/mailman/listinfo/gluster-users
> >
> >
>
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