[Gluster-users] Slow performance on samba with small files

Дмитрий Глушенок glush at jet.msk.su
Wed Feb 8 10:05:40 UTC 2017


There is a number of tweaks/hacks to make it better, but IMHO overall performance with small files is still unacceptable for such folders with thousands of entries.

If your shares are not too large to be placed on single filesystem and you still want to use Gluster - it is possible to run VM on top of Gluster. Inside that VM you can create ZFS/NTFS to be shared.

> 8 февр. 2017 г., в 12:10, Gary Lloyd <g.lloyd at keele.ac.uk> написал(а):
> Hi
> I am currently testing gluster 3.9 replicated/distrbuted on centos 7.3 with samba/ctdb.
> I have been able to get it all up and running, but writing small files is really slow. 
> If I copy large files from gluster backed samba I get almost wire speed (We only have 1Gb at the moment). I get around half that speed if I copy large files to the gluster backed samba system, which I am guessing is due to it being replicated (This is acceptable).
> Small file write performance seems really poor for us though:
> As an example I have an eclipse IDE workspace folder that is 6MB in size that has around 6000 files in it. A lot of these files are <1k in size.
> If I copy this up to gluster backed samba it takes almost one hour to get there.
> With our basic samba deployment it only takes about 5 minutes.
> Both systems reside on the same disks/SAN.
> I was hoping that we would be able to move away from using a proprietary SAN to house our network shares and use gluster instead.
> Does anyone have any suggestions of anything I could tweak to make it better ?
> Many Thanks
> Gary Lloyd
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Dmitry Glushenok
Jet Infosystems

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