[pulseaudio-discuss] shm size

Lennart Poettering lennart at poettering.net
Tue Sep 30 14:22:48 PDT 2008

On Tue, 30.09.08 13:37, Nick Thompson (rextanka at comcast.net) wrote:

> On Sep 30, 2008, at 1:00 PM, Lennart Poettering wrote:
> > Does have in impact? In which way?
> On a 4Gb device it would consume around 1.6% of available flash.  Like  
> I said, not a show stopper.

No, it normally wouldn't consume anything.

Firstly, /dev/shm is a tmpfs, i.e. a RAM file system, so no Flash
space should be allocated for it ever (unless you swap to Flash).

Now, it usually doesn't even consume much RAM, because as I said
multiple times already: the size of this shm file does NOT reflect the
actual use of RAM, it reflect the use of address space. Use "du" to
figure out the use RAM.


The file size reflects the amount of reserved address space.

The disk usage ("du") reflect the amount of used RAM.


Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
http://0pointer.net/lennart/           GnuPG 0x1A015CC4

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