From mboxrd@z Thu Jan  1 00:00:00 1970
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From: sejun.kwon at samsung.com
Subject: [SPDK] 128k sequential read / write (fio) performance with spdk+vpp
 is not as good as the one with "kernel TCP"
Date: Fri, 14 Feb 2020 04:00:30 +0000
Message-ID: <20200214040030.2820.84204@ml01.vlan13.01.org>
List-ID: <spdk@lists.01.org>
To: spdk@lists.01.org

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Hello, =

I'm working on SPDK library + VPP, because some report said that VPP reduce=
s the overhead of network. =

When I test with VPP (with mlx5 poll mode driver) and null device with spdk=
, 4k performance with VPP is much better than the default(kTCP).
But, 128k write performance with VPP is 30 percent lower than the one with =
kTCP. =

The configuration when VPP starts is as below.
Is there anyone why 128k write performance with VPP is not good as kernel ? =


I increase num-rx-desc and there is improvment, but it still lower than ker=
nel. =

Thanks in advance. =


unix {
        nodaemon
        cli-listen /run/vpp/cli.sock

        # cli-listen localhost:5002

          full-coredump


}
session {
        evt_qs_memfd_seg
}
dpdk {
        dev 0000:03:00.0
        {
        }

}
socksvr {
#       socket-name /tmp/vpp-api.sock
        socket-name /run/vpp-api.sock
}
plugins {
        plugin default { disable }
        plugin dpdk_plugin.so { enable }
}
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