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Discussion on: The anatomy of a linux read call

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Frits Hoogland

Hi Kevin! Good to 'see' you!

There is not too much to explain here. For the sake of convenience I am doing these kinds of tests on a small virtual machine on my laptop, so the virtual machine is bound to the resources on the host. This indeed means that latencies in that scale might be different from running on an enterprise configuration.

The intention of this article is to show that there is an option to look into the kernel activity of doing a read call. Next week I'll be showing an actual physical read (for which I put the trace at the end of the blog, it's too long to have it in the text :-)), and explain the steps it's going through.