haoyuan.ge
2017-Jan-17 04:28 UTC
[Gluster-users] How to achieve linear performance as adding nodes to gluster cluster (distributed replica volume)?
Hi, I have tested 3 kinds of distributed replica volume: 4 * 2, 3* 2 and 2*2. I suppose 4 * 2 should achieve the best IOPS, however, their performance seems similar. I have tested with "dd if=/dev/zero of=/mnt/glusterfs/block8 bs=128M count=1" and "dd if=/dev/zero of=/mnt/glusterfs/block8 bs=32M count=8". All bricks are on virtual machines, with same hardware: 2 cores cpu, 8G memory. The following is my volume configuration: Volume Name: rep4 Type: Distributed-Replicate Volume ID: b2ad2871-cfad-4f2c-afdb-38c2c4d6239c Status: Started Number of Bricks: 2 x 2 = 4 Transport-type: tcp Bricks: Brick1: 192.168.16.145:/home/vagrant/rep4 Brick2: 192.168.16.146:/home/vagrant/rep4 Brick3: 192.168.16.82:/home/vagrant/rep4 Brick4: 192.168.16.114:/home/vagrant/rep4 Volume Name: rep6 Type: Distributed-Replicate Volume ID: 2cbcefce-da7a-4823-aee7-432c40f3ae55 Status: Started Number of Bricks: 3 x 2 = 6 Transport-type: tcp Bricks: Brick1: 192.168.16.49:/home/vagrant/rep6 Brick2: 192.168.16.114:/home/vagrant/rep6 Brick3: 192.168.16.141:/home/vagrant/rep6 Brick4: 192.168.16.145:/home/vagrant/rep6 Brick5: 192.168.16.146:/home/vagrant/rep6 Brick6: 192.168.16.82:/home/vagrant/rep6 Volume Name: rep8 Type: Distributed-Replicate Volume ID: ea77934c-bd5d-4578-8b39-c02402d00739 Status: Started Number of Bricks: 4 x 2 = 8 Transport-type: tcp Bricks: Brick1: 192.168.16.145:/home/vagrant/rep8 Brick2: 192.168.16.146:/home/vagrant/rep8 Brick3: 192.168.16.114:/home/vagrant/rep8 Brick4: 192.168.16.82:/home/vagrant/rep8 Brick5: 192.168.16.141:/home/vagrant/rep8 Brick6: 192.168.16.49:/home/vagrant/rep8 Brick7: 192.168.16.144:/home/vagrant/rep8 Brick8: 192.168.16.112:/home/vagrant/rep8 According to "http://moo.nac.uci.edu/~hjm/Performance_in_a_Gluster_Systemv6F.pdf",> To scale out performance, enterprises need simply add additional storage server nodes, and will generally see linear performance improvements.I wonder how can I achieve linear performance improvements? Have I tested in the wrong way? ------------------ Regards, Haoyuan Ge -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170117/ee09c554/attachment.html>