Re: [Gluster-users] Unreasonably poor performance of replicated volumes

2018-04-14 Thread Joe Julian
A jumbo ethernet frame can be 9000 bytes. The ethernet frame header is at least 38 bytes, and the minimum TCP/IP header size is 40 bytes or 0.78% of the jumbo frame combined. Gluster's RPC also adds a few bytes (not sure how many and don't have time to test at the moment but for the sake of arg

Re: [Gluster-users] Unreasonably poor performance of replicated volumes

2018-04-13 Thread Anastasia Belyaeva
Thanks a lot for your reply! You guessed it right though - mailing lists, various blogs, documentation, videos and even source code at this point. Changing some off the options does make performance slightly better, but nothing particularly groundbreaking. So, if I understand you correctly, no o

Re: [Gluster-users] Unreasonably poor performance of replicated volumes

2018-04-12 Thread Vlad Kopylov
Guess you went through user lists and tried something like this already http://lists.gluster.org/pipermail/gluster-users/2018-April/033811.html I have a same exact setup and below is as far as it went after months of trail and error. We all have somewhat same setup and same issue with this - you ca

[Gluster-users] Unreasonably poor performance of replicated volumes

2018-04-11 Thread Anastasia Belyaeva
Hello everybody! I have 3 gluster servers (*gluster 3.12.6, Centos 7.2*; those are actually virtual machines located on 3 separate physical XenServer7.1 servers) They are all connected via infiniband network. Iperf3 shows around *23 Gbit/s network bandwidth *between each 2 of them. Each server h