[sheepdog-users] How enable Object Cache

[Hitoshi Mitake]

On Wed, Sep 21, 2016 at 8:50 PM, Vasiliy Tolstov <v.tolstov at selfip.ru>
wrote:

> As I know, cache is useful and with it we can avoid complex setup
> involving bcache,enhanceio and other stuff.
> And as I know, Hitoshi says that object cache can be reworked and bring
> back after 1.0 release.
> I have setup with sata HDD and some ssd on server and want to use object
> cache on ssd to speedup writing.
> Maybe this is time to rethink this and bring it back?
>

Did you really observed performance improvement by object cache? We tried
the feature in the past but it  degraded performance and often caused
segfault of sheep. Could you provide performance numbers and detailed
workload parameters?

Thanks,
Hitoshi


>
> 21 Сен 2016 г. 12:57 пользователь "Takashi Menjo" <
> menjo.takashi at lab.ntt.co.jp> написал:
>
> Hi Cristian,
>
> Object cache feature is removed from v1.0.
> If you want it, please use v0.9.x or earlier.
>
> Regards,
> Takashi
>
>
> > -----Original Message-----
> > From: sheepdog-users [mailto:sheepdog-users-bounces at lists.wpkg.org] On
> > Behalf Of Cristian Del Carlo
> > Sent: Wednesday, September 21, 2016 6:35 PM
> > To: sheepdog-users at lists.wpkg.org
> > Subject: [sheepdog-users] How enable Object Cache
> >
> > Hi list,
> >
> >
> > i have installed sheepdog on two server with Centos 7.2.
> >
> > # sheep -v
> > Sheepdog daemon version 1.0_41_gb5a7613
> >
> >
> > I am tring to enable object cache to test i/o write of vm but the
> following
> > options seem to be for me incorrect:
> >
> > sheep -w size=200G # enable object cache with 200G space
> > sheep -w size=50G,directio # enable object cache with 50G space with
> O_DIRECT
> > for cached objects
> > On man page of "sheep" i see that:
> >
> >        -w, --wq-threads
> >               specify a number of threads for workqueue
> >
> >
> > How can i enable Object Cache?
> >
> >
> > Best regards,
> >
> >
> >
> >
> >
> > Cristian Del Carlo
> >
>
>
>
>
> --
> sheepdog-users mailing lists
> sheepdog-users at lists.wpkg.org
> https://lists.wpkg.org/mailman/listinfo/sheepdog-users
>
>
>
> --
> sheepdog-users mailing lists
> sheepdog-users at lists.wpkg.org
> https://lists.wpkg.org/mailman/listinfo/sheepdog-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.wpkg.org/pipermail/sheepdog-users/attachments/20160928/c5af7f94/attachment.html>