To test, do we need to change anything else with our setup, like remove 80-vpp.conf?
If I have HugePages_Total set to 8192 via grub, and 80-vpp.conf is set to the default of 1024, my system should stay at 8192 (provided there is enough free hugepages), correct? Thanks, Billy On Thu, Sep 7, 2017 at 6:30 AM, Damjan Marion (damarion) <damar...@cisco.com > wrote: > > Dear vpp-devers, > > As I mentioned on the last community call, there is patch which > significantly changes > the way how VPP is allocating wired memory, including the dpdk hugepages. > > Patch is available here and it is passing verify jobs: > > https://gerrit.fd.io/r/#/c/7701/ > > With this change, VPP is able dynamically pre-allocate hugepages, if they > are not already available. > > This change is affecting DPDK buffer mempools, as now they are allocated > by VPP, and not directly by DPDK. > I use dpdk rte_mempool_xmem_create (...) to pass allocated wired memory > region to dpdk. > > Result is smaller memory footprint, mainly thanks to the better control of > memory allocation we have. > DPDK is still allocating 64M/socket for it’s internal data structures and > VPP allocates 40MB/socket for > our default number of buffers (16K). In case people want more buffers, it > is enough to increase num_mbufs parameter > and VPP will increase size of mempool automatically, which is significant > improvement as currently people need to play > with socket-mem parameter. > > In total, footprint is reduced from 256M/socket to 104M/socket. > > At the moment, code only deals with 2M pages, support for 1G pages for > extreme VPP consumers will be added in the separate patch. > > I will really appreciate if people can try this patch and report > success/failure. It important that we test it in different > configurations before it is merged. > > Thanks, > > Damjan > > > > > > _______________________________________________ > vpp-dev mailing list > vpp-dev@lists.fd.io > https://lists.fd.io/mailman/listinfo/vpp-dev -- *Billy McFall* SDN Group Office of Technology *Red Hat*
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