On Mon, 13 May 2019 21:52:22 -0700 Stephen Hemminger <step...@networkplumber.org> wrote:
> On Mon, 1 Apr 2019 14:17:56 -0700 > Yongseok Koh <ys...@mellanox.com> wrote: > > > +- ``mr_ext_memseg_en`` parameter [int] > > + > > + A nonzero value enables extending memseg when registering DMA memory. If > > + enabled, the number of entries in MR (Memory Region) lookup table on > > datapath > > + is minimized and it benefits performance. On the other hand, it worsens > > memory > > + utilization because registered memory is pinned by kernel driver. Even > > if a > > + page in the extended chunk is freed, that doesn't become reusable until > > the > > + entire memory is freed. > > + > > + Enabled by default. > > + > > This module parameter does not appear in the upstream Linux kernel drivers > (even 5.2). > What code are you referring to? Nevermind, it is a DPDK not kernel parameter.
