Hi,
You need to increase the value of some netmap module parameter. At least
ring_size, maybe also buf_num. Then restart your netmap applications.
Keep in mind that performance could worsen with more slots, because of
increased cache thrashing.
Cheers,
Vincenzo
On Wed, Mar 28, 2018, 3:50 PM
Hi,
I was trying netmap on a Linux box with 128G of ram (64G per numa node). If I
set ixgbe interface to 4096 ring size, the nm_open will fail with error "Cannot
allocate memory". What can I tweak to make the card use larger ring size? The
following test was run after fresh reboot.
$ ethtool -
