Gr_vmcircbuf_createfilemapping not available?

GNU Radio
1

[root@aurora rng2]# usrp_rx_cfile.py -R A:0 -d 4 -g 18 -f 8M -N 1.5M -s
/tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37
Using RX d’board A: Basic Rx
USB sample rate 16M
gr_vmcircbuf_createfilemapping: createfilemapping is not available

[root@aurora rng2]# ls -lh
/tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37
-rw-r–r-- 1 root root 5.8M Jun 26 13:22
/tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37

It appears I’ve got data, but what is the vmcircbuf error?

[root@aurora rng2]# uname -a
Linux aurora 2.6.18-194.3.1.el5 #1 SMP Sun May 2 04:17:42 EDT 2010
x86_64 x86_64 x86_64 GNU/Linux

[root@aurora rng2]# cat /etc/redhat-release
Red Hat Enterprise Linux Client release 5.5 (Tikanga)

2

On Sat, Jun 26, 2010 at 01:25:10PM -0500, Brett L. Trotter wrote:

It appears I’ve got data, but what is the vmcircbuf error?

This isn’t an error, and you should see this only the first time you
attempt to run any GR application as a particular user on a given
machine. (Unless for some reason, you can’t write into
~/.gnuradio/prefs/gr_vmcircbuf_default_factory.)
gr_vmcircbuf_createfilemapping is only available under Windows.

FWIW, on most Linux systems, it ends up getting set to
gr_vmcircbuf_sysv_shm_factory

Eric