Re: Ceph RGW Performance [EXT]

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Hi,

On 25/09/2020 20:39, Dylan Griff wrote:

We have 10Gb network to our two RGW nodes behind a single ip on
haproxy, and some iperf testing shows I can push that much; latencies
look okay. However, when using a small cosbench cluster I am unable to
get more than ~250Mb of read speed total.

A few thoughts:

i) have you benchmarked your ceph itself (i.e. with rados bench - you'll want to parameter-sweep with how many clients you run (and/or threads/client))? That gives you a more useful baseline

ii) what does your RGW node load look like? On our RGW nodes we can eventually use up all the available CPU, but that required tuning both cosbench (which you look to have tried) and civetweb - rgw num rados handles and num_threads in rgw frontends

iii) is haproxy your rate-limiter? We had to significantly increase nbthread on our haproxy

HTH,

Matthew



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