[Gluster-users] New cluster - first experience

Pranith Kumar Karampuri
Wed, 13 Jul 2016 12:16:04 -0000

On Wed, Jul 13, 2016 at 4:47 PM, Gandalf Corvotempesta <
gandalf.corvotempesta at gmail.com> wrote:

> 2016-07-13 10:24 GMT+02:00 Pranith Kumar Karampuri <pkarampu at
redhat.com>:
> > We are in the process of making shard available for general purpose
> > usecases.
>
> Any ETA?
>

Design hasn't finalized so hard to tell.


>
> Anyway, i did another test. This time the "client" has 4 bonded
> gigabit nic (balance-rr) and each server has 2 bonded gigabit nic
> (balance-rr). (previously i had an issue with bonding on our switch)
>
> With sharding (64MB):
> # echo 3 > /proc/sys/vm/drop_caches; dd if=/dev/zero of=test bs=1M
> count=1000 conv=fsync
> 1000+0 record dentro
> 1000+0 record fuori
> 1048576000 byte (1,0 GB) copiati, 89,2066 s, 11,8 MB/s
>
>
> Without sharding:
> # echo 3 > /proc/sys/vm/drop_caches; dd if=/dev/zero of=test bs=1M
> count=1000 conv=fsync
> 1000+0 record dentro
> 1000+0 record fuori
> 1048576000 byte (1,0 GB) copiati, 17,759 s, 59,0 MB/s
>
> WOW! But still far away from HDD speed (about 120MB/s)
>
>
> With 4 bonded nic, I have 4000gbit of bandwidth.
> 4000/8 = 500MB/s
> With this configuration gluster should be able to write at full speed
> on 3 nodes at once.
> Each node has 2000/8 = 250MB/s of bandwidth, twice the hdd speed.
>
If you do a plain nfs mount of the brick without any gluster in picture
what is the speed you get?


--
Pranith
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://www.gluster.org/pipermail/gluster-users/attachments/20160713/d1b70433/attachment.html>