Uhd::device::send while linux disk cache is full

I have sent this to [email protected] but somehow it doesn’t
work. Anyway here the email.

Hi all,
after a week of tests I can conclude that (streaming a big file for
example) if the server has the disk cache full then the
uhd::device::send
method last longer than expected (see picture attached where it’s
reported the send execution time), I have changed my application
so the kernel is not caching my streamed file anymore but I think
it would be better understanding why this is happening.

Has anyone experienced this on their own systems?

Regards