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From: allenz at mellanox.com
Subject: [SPDK] Re: SPDK socket abstraction layer
Date: Tue, 05 Nov 2019 05:29:25 +0000
Message-ID: <20191105052925.2696.40119@new-ml01.vlan13.01.org>
In-Reply-To: dbadaf3a-376f-4960-9363-e7dc7349fd2f@email.android.com
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To: spdk@lists.01.org

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Hi,

With suggestion of Sasha, we synced the codes to patch (https://review.gerr=
ithub.io/c/spdk/spdk/+/471752). We run tests on two X86-64 servers connecte=
d with Mellanox CX-5 100G.  =


For Perf with 16 QD/4K IO, we found 14% improvement with the zero-copy patc=
h when 1 or 2 cores were used, and 6% improvement when more cores (e.g., 8)=
 were used.

Unfortunately,  when we tried to use queue depth more than 16, and bigger I=
O than 4K, Perf hung or got CQ error. But without the zero-copy patch, 64QD=
 or 64K IO was ok.

Best regards,
Allen
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