Hi Guys, I have a gluster volume with the following configuration. ~~~~~~~~~~~~~~~~~~~~~ Number of Bricks: 9 Transport-type: tcp
Hot Tier : Hot Tier Type : Replicate Number of Bricks: 1 x 3 = 3 Cold Tier: Cold Tier Type : Distributed-Replicate Number of Bricks: 2 x 3 = 6 performance.flush-behind: on performance.cache-max-file-size: 128MB performance.cache-size: 25GB diagnostics.count-fop-hits: off diagnostics.latency-measurement: off cluster.tier-mode: cache features.ctr-enabled: on transport.address-family: inet nfs.disable: on performance.client-io-threads: off ~~~~~~~~~~~~~~~~~~~~~ Without write cache, bricks in hot tier got around 1.5 GB/s write speed and bricks in cold tier got 700 MB/s. However, I am getting only around 35 MB/s write speed in gluster volume mounted in glusterfs. I checked and confirmed that I can get network throughput as much as 1.4 Gbits/sec. The volume had around 175 MB/s write speed initially, however, speed reduced as more data stored in the volume. I also implemented a second volume with similar configuration, and I am getting write speed around 175 MB/s again. Could someone please advise on what could be done to improve write speed. Is NFS Ganesha a solution to improve write speed? Thanks in advance. -- Kind Regards, Sherin
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