Re: Benchmarking: How to identify bottleneck (limiting factor) and achieve "linear scalability"?

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Le 28/01/2019 à 15:03, Saurabh Nanda a écrit :
An update. It seems (to my untrained eye) that something is wrong with the second SSD in the RAID configuration. Here's my question on serverfault related to what I saw with iostat - https://serverfault.com/questions/951096/difference-in-utilisation-reported-by-iostat-for-two-identical-disks-in-raid1

I've disabled RAID and rebooted the server to run the benchmarks with client=1,4,8,12 with shared_buffers=8MB (default) vs shared_buffers=2GB (optimised?) and will report back.


You should probably include the detailed hardware you are working on - especially for the SSD, the model can have a big impact, as well as its wear.


Nicolas






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