[Gluster-users] A year's worth of Gluster

[Franco Broi]

Our theoretical peak throughput is about 4Gbytes/sec or 4 x 10Gbits/Sec,
you can see from the graph that the maximum recorded is 3.6GB/Sec. This
was probably during periods of large sequential IO.

We have a small cluster of clients (10) with 10Gbit ethernet but the
majority of our machines (130) have gigabit. The throughput maximum for
the 10Gbit connected machines was just over 3GBytes/Sec with individual
machines recording about 800MB/Sec.

We can easily saturate our 10Gbit links on the servers as each JBOD is
capable of better than 500MB/Sec but with mixed sequential/random access
it seems like a good compromise.

We have another 2 server Gluster system with the same specs and we get
1.8GB/Sec reads and 1.1GB/Sec writes.

What are you using to measure your throughput?

On Sun, 2014-12-07 at 20:52 -0500, Andrew Smith wrote: 
> I have a similar system with 4 nodes and 2 bricks per node, where 
> each brick is a single large filesystem (4TB x 24 RAID 6). The
> computers are all on QDR Infinband with Gluster using IPOIB. I
> have a cluster of Infiniband clients that access the data on the
> servers. I can only get about 1.0 to 1.2 GB/s throughput with my
> system though. Can you tell us the peak throughput that you are
> getting. I just don’t have a sense of what I should expect from 
> my system. A similar Luster setup could achieve 2-3 GB/s, which
> I attributed to the fact that it didn’t use IPOIB, but instead used
> RDMA. I’d really like to know if I am wrong here and there is 
> some configuration I can tweak to make things faster. 
> 
> Andy
> 
> On Dec 7, 2014, at 8:43 PM, Franco Broi <franco.broi at iongeo.com> wrote:
> 
> > On Fri, 2014-12-05 at 14:22 +0000, Kiebzak, Jason M. wrote: 
> >> May I ask why you chose to go with 4 separate bricks per server rather than one large brick per server?
> > 
> > Each brick is a JBOD with 16 disks running RAIDZ2. Just seemed more
> > logical to keep the bricks and ZFS filesystems confined to physical
> > hardware units, ie I could disconnect a brick and move it to another
> > server.
> > 
> >> 
> >> Thanks
> >> Jason
> >> 
> >> -----Original Message-----
> >> From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Franco Broi
> >> Sent: Thursday, December 04, 2014 7:56 PM
> >> To: gluster-users at gluster.org
> >> Subject: [Gluster-users] A year's worth of Gluster
> >> 
> >> 
> >> 1 DHT volume comprising 16 50TB bricks spread across 4 servers. Each server has 10Gbit Ethernet.
> >> 
> >> Each brick is a ZOL RADIZ2 pool with a single filesystem.
> > 
> > 
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