Hello!

On Mon, Sep 11, 2017 at 04:47:34PM +0200, Grzegorz Kulewski wrote:

> In my company we often want to monitor transfer speeds. To do
> that we upload 1M-10G zero/random file to a web server and then
> we set up some monitoring to time the download. Or we do the
> download by hand during troubleshooting sessions.
>
> The downside of this is that we need to upload and keep those
> files on disk and sometimes disk is a very limited resource.

Just a side note: on most operating systems you can create sparse
files, which do not occupy disk space. For example:

$ truncate -s 10g foo
$ ls -lah foo
-rw-r--r-- 1 mdounin mdounin 10G Sep 11 18:08 foo
$ du -sh foo
96K foo

This allows to create huge zero-filled files even in very
constrained environments.

--
Maxim Dounin
http://nginx.org/
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