Hi gluster users, I've spent several months trying to get any kind of high performance out of gluster. The current XFS/samba array is used for video editing and 300-400MB/s for at least 4 clients is minimum (currently a single windows client gets at least 700/700 for a single client over samba, peaking to 950 at times using blackmagic speed test). Gluster has been getting me as low as 200MB/s when the server can do well over 1000MB/s. I have really been counting on / touting Gluster as being the way of the future for us. However I can't justify cutting our performance to a mere 13% of non-gluster speeds. I've started to reach a give up point and really need some help/hope otherwise I'll just have to migrate the data from server 1 to server 2 just like I've been doing for the last decade. :( If anyone can please help me understand where I might be going wrong it would be absolutely wonderful! Server 1: Single E5-1620 v2 Ubuntu 14.04 glusterfs 3.10.5 16GB Ram 24 drive array on LSI raid Sustained >1.5GB/s to XFS (77TB) Server 2: Single E5-2620 v3 Ubuntu 16.04 glusterfs 3.10.5 32GB Ram 36 drive array on LSI raid Sustained >2.5GB/s to XFS (164TB) Speed tests are done with local with single thread (dd) or 4 threads (iozone) using my standard 64k io size to 20G or 5G files (20G for local drives, 5G for gluster) files. Servers have Intel X520-DA2 dual port 10Gbit NICS bonded together with 802.11ad LAG to a Quanta LB6-M switch. Iperf throughput numbers are single stream >9000Mbit/s Here is my current gluster performance: Single brick on server 1 (server 2 was similar): Fuse mount: 1000MB/s write 325MB/s read Distributed only servers 1+2: Fuse mount on server 1: 900MB/s write iozone 4 streams 320MB/s read iozone 4 streams single stream read 91MB/s @64K, 141MB/s @1M simultaneous iozone 4 stream 5G files Server 1: 1200MB/s write, 200MB/s read Server 2: 950MB/s write, 310MB/s read I did some earlier single brick tests with samba VFS and 3 workstations and got up to 750MB/s write and 800MB/s read aggregate but that's still not good. These are the only volume settings tweaks I have made (after much single box testing to find what actually made a difference): performance.cache-size 1GB (Default 23MB) performance.client-io-threads on performance.io-thread-count 64 performance.read-ahead-page-count 16 performance.stat-prefetch on server.event-threads 8 (default?) client.event-threads 8 Any help given is appreciated!
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