you can reduce the amount of ram (buffers, mostly) by
tweaking the values in netmap_mem2.c ::
struct netmap_obj_params netmap_params[NETMAP_POOLS_NR] = {
...
}or you can simply modify the constant netmap_mem2.h:#define NETMAP_BUF_MAX_NUM 20*4096*2 to something smaller that suits an openwrt box (in which i am very interested, as I'd like to deploy one of these soon) cheers luigi On Tue, Dec 30, 2014 at 4:12 PM, Carlos Ferreira <carlosmf...@gmail.com> wrote: > Update: > > I noticed that the netmap module was still crashing, after changing the > OpenWRT VM ram to 256MB. I now raised to 1GB and it no longer crashed. The > netmap module is now consuming about 350MB of Ram, which for my objectives > is just too much... > > On 30 December 2014 at 14:06, Carlos Ferreira <carlosmf...@gmail.com> wrote: > >> 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 - c...@av.it.pt >> Skype & GTalk -> carlosmf...@gmail.com >> LinkedIn -> http://www.linkedin.com/in/carlosmferreira >> > > > > -- > > Carlos Miguel Ferreira > Researcher at Telecommunications Institute > Aveiro - Portugal > Work E-mail - c...@av.it.pt > Skype & GTalk -> carlosmf...@gmail.com > LinkedIn -> http://www.linkedin.com/in/carlosmferreira > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" -- -----------------------------------------+------------------------------- Prof. Luigi RIZZO, ri...@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL +39-050-2211611 . via Diotisalvi 2 Mobile +39-338-6809875 . 56122 PISA (Italy) -----------------------------------------+------------------------------- _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
