Hello, I did simple tryout for GLFS 2.0rc8 on CentOS Linux with 2x Dual Core Xeon 4GB RAM. My benchmarks, it is high load single stream access on loopback glfs mount on a single server with high performance FC RAID. Target volume is XFS formatted. Local benchmark results are as follows.(benchmark command is XDD command) Buf I/O READ = about 660MB/s WRITE = about 480MB/s Direct I/O 4MB block read = about 540MB/s 4MB block write = about 350MB/s The results for GLFS loopback mount volume are as follows. Buf I/O READ = about 460MB/s WRITE = about 330MB/s Direct I/O 4MB block read = about 160MB/s 4MB block write = about 100MB/s Buf I/O with GLFS is good results with small block size. But The large block size access is slows down. Direct I/O is poor performance without follow the block size. Attached please find a detailed information text. I want to use glfs with professional video applications on IB networks. Video applications are using storages with large uncompress image sequences and/or uncompress large movie files.(up to 2K/4K) The block size control and direct I/O performance are important for them. Please advise me about options/configurations for improve the performance, and theory for improve performance by block size on GLFS. My best regards, hideo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://zresearch.com/pipermail/gluster-users/attachments/20090423/9941faae/attachment.htm> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: xddbench.rc8.log URL: <http://zresearch.com/pipermail/gluster-users/attachments/20090423/9941faae/attachment.txt>
