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<div>Hi Guys,<br>
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<div>I have a gluster volume with the following configuration.</div>
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<div>~~~~~~~~~~~~~~~~~~~~~</div>
<div>Number of Bricks: 9</div>
<div>Transport-type: tcp<br>
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<div>Hot Tier :</div>
<div>Hot Tier Type : Replicate</div>
<div>Number of Bricks: 1 x 3 = 3<br>
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<div>Cold Tier:</div>
<div>Cold Tier Type : Distributed-Replicate</div>
<div>Number of Bricks: 2 x 3 = 6<br>
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<div>performance.flush-behind: on</div>
<div>performance.cache-max-file-size: 128MB</div>
<div>performance.cache-size: 25GB<br>
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<div>diagnostics.count-fop-hits: off</div>
<div>diagnostics.latency-measurement: off</div>
<div>cluster.tier-mode: cache</div>
<div>features.ctr-enabled: on</div>
<div>transport.address-family: inet</div>
<div>nfs.disable: on</div>
<div>performance.client-io-threads: off</div>
<div>~~~~~~~~~~~~~~~~~~~~~<br>
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<div>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.<br>
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<div>I checked and confirmed that I can get network throughput as much as 1.4 Gbits/sec.<br>
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<div>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.<br>
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<div>Could someone please advise on what could be done to improve write speed.<br>
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<div>Is NFS Ganesha a solution to improve write speed?<br>
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<div>Thanks in advance.</div>
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<div>--</div>
<div>Kind Regards,</div>
<div>Sherin<br>
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