[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Really big items, best practices?
From: |
Josh Blum |
Subject: |
Re: [Discuss-gnuradio] Really big items, best practices? |
Date: |
Tue, 17 Jan 2012 10:19:21 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111124 Thunderbird/8.0 |
> With GNU Radio, very large item sizes do not work that well since the
> inter-block buffers are shared between threads and therefore, max size
> is limited by the OS. I'm sure you know what I mean :)
>
So your machine has enough memory, but the special "shared-memory/
doubly-mapped" buffers used by gnuradio cannot be allocated large
enough? Another downside of the doubly-mapped buffers is that we waste
half of the physical memory reserved.
I have been giving some thought into supporting "linear" buffers. The
downside is that you have to consider special edge conditions. It may be
that the issue you are having is a motivating reason to implement this. :-)
-Josh