Date: Tue, 30 Dec 2014 14:06:57 +0000 From: Carlos Ferreira <carlosmf.pt@gmail.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Regarding Netmap internal memory allocation. Message-ID: <CAJpYY6XmOnYX4bm=YyXr5hoiFLXhoEFXDa44Z_Fn1fHNj8G5_w@mail.gmail.com>
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To Luigi and to whom may be able to help Hello all. Is it possible to reduce the size of the memory buffer allocated by the netmap module? I'm asking this because I was implementing some testing code, using NICs and a Tap device in an OpenWRT VM with 64MB of RAM. Because of the small RAM amount, the nm_open crashed when the program tried to netmap the tap device, after I previously netmapped one NIC successfully. After the crash, I bumped the VM RAM to 256MB and the test program ran well, but not without me noticing that the VM RAM consumption was increased about 90 MB by netmap. Resuming, I want to know if there is a way to reduce the memory buffer allocation, without recompiling the netmap kernel module. Thank you for the attention. -- Carlos Miguel Ferreira Researcher at Telecommunications Institute Aveiro - Portugal Work E-mail - cmf@av.it.pt Skype & GTalk -> carlosmf.pt@gmail.com LinkedIn -> http://www.linkedin.com/in/carlosmferreira
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