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Subject: [dpdk-dev] [Bug 186] Huge testpmd startup time without --legacy-mem
	option
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https://bugs.dpdk.org/show_bug.cgi?id=3D186

            Bug ID: 186
           Summary: Huge testpmd startup time without --legacy-mem option
           Product: DPDK
           Version: 18.05
          Hardware: All
                OS: All
            Status: CONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev@dpdk.org
          Reporter: maxime.coquelin@redhat.com
  Target Milestone: ---

Doing PVP testing, we noticed that testpmd startup time
is noticeably increased when not passing --legacy-mem option.

With 1G hugepages and below command lines, we measure ~2 seconds
with --legacy-mem option, and 13 seconds without:

testpmd -c 7 -n 4 --socket-mem 2048 0 -w 0000:00:02.0 --legacy-mem -- --bur=
st
64 -i --rxq=3D2 --txq=3D2 --rxd=3D4096 --txd=3D1024 --coremask=3D6 --auto-s=
tart
--port-topology=3Dchained --forward-mode=3Dmacswap

testpmd -c 7 -n 4 --socket-mem 2048 0 -w 0000:00:02.0 -- --burst 64 -i --rx=
q=3D2
--txq=3D2 --rxd=3D4096 --txd=3D1024 --coremask=3D6 --auto-start --port-topo=
logy=3Dchained
--forward-mode=3Dmacswap

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